Plant Water Relations

  • Rainer Lösch
Part of the Progress in Botany book series (BOTANY, volume 60)

Abstract

Since the last general overview on plant water relations in Prog Bot 56 (Losch 1995), another nearly 4000 publications on this topic have appeared. Only a small fraction of them can be mentioned in the following. The present report does not cover aspects of water relations of poikilohydric plants and of stomatal patchiness (Prog Bot 59: Hartung et al. 1997; Beyschlag and Eckstein 1997), habitat water relations, and aspects of water relations during germination and growth. A new textbook in German on plant-water relations gives a comprehensive overview of the whole topic (Losch 1998).

Keywords

Sucrose Hydration Chlorophyll Glutathione Polysaccharide 

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References

  1. Agrama HAS, Moussa ME (1996) Mapping QTLs in breeding for drought tolerance in maize (Zea mays L.). Euphytica 91:89–97Google Scholar
  2. Alder NN, Sperry JS, Pockman WT (1996) Root and stem xylem embolism, stomatal conductance, and leaf turgor in Acer grandidentatum populations along a soil moisture gradient. Oecologia 105:293–301Google Scholar
  3. Alia P, Saradhi P, Mohanty P (1993) Proline in relation to free radical production in seedlings of Brassica juncea raised under sodium chloride stress. Plant Soil 155/156:497–500Google Scholar
  4. Allakhverdiev SI, Feyziev YM, Ahmed A, Hayashi H, Aliev JA, Klimov W, Murata N, Carpentier R (1996) Stabilization of oxygen evolution and primary electron transport reactions in photosystem II against heat stress with glycinebetaine and sucrose. J Photochem Photobiol B 34:149–157Google Scholar
  5. Allen GJ, Sanders D (1994) Two voltage-gated, calcium release channels coreside in the vacuolar membrane of broad bean guard cells. Plant Cell 6:685–694PubMedGoogle Scholar
  6. Allen GJ, Sanders D (1995) Calcineurin, a type 2B protein phosphatase, modulates the Ca2+-permeable slow vacuolar ion channel of stomatal guard cells. Plant Cell 7:1473–1483PubMedGoogle Scholar
  7. Allen GJ, Sanders D (1996) Control of ionic currents in guard cell vacuoles by cytosolic and luminal calcium. Plant J 10:1055–1069PubMedGoogle Scholar
  8. Ameglio T, Cruiziat P, Beraud S (1995) Tension/pressure alternation in walnut xylem sap during winter: effect on hydraulic conductivity of twigs. CR Acad Sci [III] 318:351–357Google Scholar
  9. Ammann C, Meixner FX, Busch J, Lösch R (1996) CO2 and H2O gas exchange of a triticale field. II. Micrometeorological flux studies and comparison with upscaling from porometry. Phys Chem Earth 21:151–155Google Scholar
  10. Amodeo G, Escobar A, Zeiger E (1994) A cationic channel in the guard cell tonoplast of Allium cepa. Plant Physiol 105:999–1006PubMedGoogle Scholar
  11. Andersen PC, Brodbeck BV, Mizell RF (1993) Diurnal variation of amino acids and organic acids in xylem fluid from Lagerstroemia indica: an endogenous circadian rhythm. Physiol Plant 89:783–790Google Scholar
  12. Andersen PC, Brodbeck BV, Mizell RF (1995a) Water stress- and nutrient solutionmediated changes in water relations and amino acids, organic acids and sugars in xylem fluid of Prunus salicina and Lagerstroemia indica. J Am Soc Hortic Sci 120:36–42Google Scholar
  13. Andersen PC, Brodbeck BV, Mizell RF (1995b) Diurnal variation in tension, osmolarity, and the composition of nitrogen and carbon assimilates in xylem fluid of Prunus persica, Vitis hybrid, and Pyrus communis. J Am Soc Hortic Sci 120:600–606Google Scholar
  14. Anderson BE, Ward JM (1994) Evidence for an extracellular reception site for abscisic acid in Commelina guard cells. Plant Physiol 104:1177–1183PubMedGoogle Scholar
  15. Anfodillo T, Sigalotti GB, Tomasi M, Semenzato P, Valentini R (1993) Applications of a thermal imaging technique in the study of the ascent of sap in woody species. Plant Cell Environ 16:997–1001Google Scholar
  16. Aphalo PJ, Jarvis PG (1993) The boundary layer and the apparent responses of stomatal conductance to wind speed and to the mole fractions of CO2 and water vapour in the air. Plant Cell Environ 16:771–783Google Scholar
  17. Armstrong J, Armstrong W, Armstrong IB, Pittaway GR (1996) Senescence, and phytotoxin, insects, fungal and mechanical damage: factors reducing convective gas-flows in Phragmites australis. Aquat Bot 54:211–226Google Scholar
  18. Aschan G, Lösch R, Jiménez MS, Morales D (1997) Energiebilanz von Waldbeständen in nicht-idealem Gelände - Abschätzungen auf der Grundlage von standörtlicher Klimaerfassung und flankierenden Gaswechselmessungen am Beispiel eines Lorbeerwaldbestandes auf Teneriffa. EcoSys (Kiel) Suppl 20:145–160Google Scholar
  19. Assmann SM, Gershenson A (1991) The kinetics of stomatal responses to VPD in Vicia faba: electrophysical and water relations models. Plant Cell Environ 14:455–466Google Scholar
  20. Auge RM, Duan X, Ebel RC, Stodola AJW (1994) Nonhydraulic signalling of soil drying in mycorrhizal maize. Planta 193:74–82Google Scholar
  21. Baas P, Wheeler EA (1996) Parallelism and reversibility in xylem evolution: a review. Int Assoc Wood Anat J 17:351–364Google Scholar
  22. Bailie M, Romero-Aranda R, Bailie A (1996) Stomatal conductance of rose whole plants in greenhouse conditons: Analysis and modelling. J Hortic Sci 71:957–970Google Scholar
  23. Barradas VL, Jones HG, Clark JA (1994) Stomatal responses to changing irradiance in Phaseolus vulgaris L. J Exp Bot 45:931–936Google Scholar
  24. Barrett DJ, Hatton TJ, Ash JE, Ball MC (1995) Evaluation of the heat pulse velocity technique for measurement of sap flow in rainforest and eucalypt forest species of southeastern Australia. Plant Cell Environ 18:463–469Google Scholar
  25. Bartels D, Furini A, Ingram J, Salamini F (1996) Responses of plants to dehydration stress: a molecular analysis. Plant Growth Regul 20:111–118Google Scholar
  26. Basnayake J, Cooper M, Ludlow MM, Henzell RG, Snell PJ (1995) Inheritance of osmotic adjustment to water stress in three grain sorghum crosses. Theor Appl Genet 90:675–682Google Scholar
  27. Basnayake J, Cooper M, Henzell RG, Ludlow MM (1996) Influence of rate of development of water deficit on the expression of maximum osmotic adjustment and desiccation tolerance in three grain sorghum lines. Field Crops Res 49:65–76Google Scholar
  28. Bastide B, Sipes D, Hann J, Ting IP (1993) Effect of severe water stress on aspects of crassulacean acid metabolism in Xerosicyos. Plant Physiol 103:1089–1096PubMedGoogle Scholar
  29. Bauer D, Biehler K, Fock H, Carrayol E, Hirel B, Migge A, Becker TW (1997) A role for cytosolic glutamine synthetase in the remobilization of leaf nitrogen during water stress in tomato. Physiol Plant 99:241–248Google Scholar
  30. Beck E, Wagner BM (1994) Quantification of the daily cytokinin transport from the root to the shoot of Urtica dioica L. Bot Acta 107:342–348Google Scholar
  31. Belhassen E, This D, Monneveux P (1995) Adaptation gdnetique a secheresse. Cah Agric 4:251–261Google Scholar
  32. Berbigier P, Bonnefond JM, Loustau D, Ferreira MI, Davis JS, Pereira JS (1996) Transpiration of a 64-year-old maritime pine stand in Portugal. II. Evapotranspiration and canopy stomatal conductance measured by an eddy covariance technique. Oecologia 107:43–52Google Scholar
  33. Bernsdorff C, Wolf A, Winter R, Gratton E (1997) Effect of hydrostatic pressure on water penetration and rotational dynamics in phospholipid-cholesterol bilayers. Biophys J 72:1264–1277PubMedGoogle Scholar
  34. Beyschlag W, Eckstein J (1997) Stomatal patchiness. Prog Bot 59:283–298Google Scholar
  35. Bishop K, Dambrine E (1995) Localization of tree water uptake in Scots pine and Norway spruce with hydrological tracers. Can J For Res 25:286–297Google Scholar
  36. Blatt MR, Thiel G (1994) K+ channels of stomatal guard cells: bimodal control of the K+ inward-rectifier evoked by auxin. Plant J 5:55–68PubMedGoogle Scholar
  37. Blom-Zandstra M, Pot CS, Maas FM, Schapendonk AHCM (1995) Effects of different light treatments on the nocturnal transpiration and dynamics of stomatal closure of two rose cultivars. Sci Hortic 61:252–262Google Scholar
  38. Blum A (1996) Crop responses to drought and the interpretation of adaptation. Plant Growth Regul 20:135–148Google Scholar
  39. Borchert R (1994) Electric resistance as a measure of tree water status during seasonal drought in a tropical dry forest in Costa Rica. Tree Physiol 14:299–312PubMedGoogle Scholar
  40. Borghetti M, Leonardi S, Raschi A, Snyderman D, Tognetti R (1993) Ecotypic variation of xylem embolism, phenological traits, growth parameters and allozyme characteristics in Vagus sylvatica. Funct Ecol 7:713–720Google Scholar
  41. Boyer JS (1993) Temperature and growth-induced water potential. Plant Cell Environ 16:1099–1106Google Scholar
  42. Bret-Harte MS, Silk WK (1994) Nonvascular, symplasmic diffusion of sucrose cannot satisfy the carbon demands of growth in the primary root tip of Zea mays L. Plant Physiol 105:19–33PubMedGoogle Scholar
  43. Brodribb T (1996) Dynamics of changing intercellular CO2 concentration (c.) during drought and determination of minimum functional c.. Plant Physiol 111:179–185PubMedGoogle Scholar
  44. Bunce JA (1996) Does transpiration control stomatal responses to water vapour pressure deficit? Plant Cell Environ 20:131–135Google Scholar
  45. Burdon RH (1993) Stress proteins in plants. Bot J Scotl 46:463–475Google Scholar
  46. Busch J, Lösch R, Meixner FX, Ammann C (1996) CO2 and H2O2 gas exchange of a tricicale field. I. Leaf level porometry and upscaling to canopy level. Phys Chem Earth 21:143–149Google Scholar
  47. Bussotti F, Bottacci A, Bartolesi A, Grossoni P, Tani C (1995) Morpho-anatomical alterations in leaves collected from beech trees Vagus sylvatica L. in conditions of natural water stress. Environ Exp Bot 35:201–213Google Scholar
  48. Canny MJ (1995) A new theory for the ascent of sap-cohesion supported by tissue pressure. Ann Bot 75:343–357Google Scholar
  49. Carvajal M, Cooke DT, Clarkson DT (1996) Plasma membrane fluidity and hydraulic conductance in wheat roots: interactions between root temperature and nitrate or phosphate deprivation. Plant Cell Environ 19:1110–1174Google Scholar
  50. Castillo FJ (1996) Antioxidative protection in the inducible CAM plant Sedum album L. following the imposition of severe water stress and recovery. Oecologia 107:469–477Google Scholar
  51. Castrillo M, Trujillo I (1994) Ribulose-l,5-bisphosphate carboxylase activity and chlorophyll and protein contents in two cultivars of French bean plants under water stress and rewatering. Photosynthetica 30:175–181Google Scholar
  52. Cerovic ZG, Goulas Y, Gorbunov M, Briantais J-M, Camenen L, Moya I (1996) Fluorosensing of water stress in plants: diurnal changes of the mean lifetime and yield of chlorophyll fluorescence, measured simultaneously and at a distance with a t - LID AR and a modified PAM-fluorimeter, in maize, sugar beet, and kalanchoe. Remote Sens Environ 58:311–321Google Scholar
  53. Chandra S, Lindsey PA, Bassuk NL (1994) A gauge to measure the mass flow rate of water in trees. Plant Cell Environ 17:867–874Google Scholar
  54. Chapman D (1994) The role of water in biomembrane structures. J Food Eng 22:367–380Google Scholar
  55. Chazen O, Neumann PM (1994) Hydraulic signals from the roots and rapid cell-wall hardening in growing maize (Zea mays L.) leaves are primary responses to polyethylene glycol-induced water deficits. Plant Physiol 104:1385–1392PubMedGoogle Scholar
  56. Chen XM, Begonia GB, Hesketh JD (1995) Soybean stomatal acclimation to long-term exposure to C02-enriched atmospheres. Photosynthetica 31:51–57Google Scholar
  57. Cheng Y, Weng J, Joshi CP, Nguyen HT (1993) Dehydration stress-induced changes in translatable RNAs in sorghum. Crop Sci 33:1397–1400Google Scholar
  58. Chimenti CA, Hall AJ (1994) Responses to water stress of apoplastic water fraction and bulk modulus of elasticity in sunflower (Helianthus annuus L.) genotypes of contrasting capacity for osmotic adjustment. Plant Soil 166:101–107Google Scholar
  59. Cho H-T, Kende H (1997) Expansins in deep-water rice internodes. Plant Physiol 113:1137–1143PubMedGoogle Scholar
  60. Cienciala E, Lindroth A (1995) Gas-exchange and sap flow measurements of Salix viminalis trees in short-rotation forest. I. Transpiration and sap flow. Trees 9:289–294Google Scholar
  61. Close TJ (1996) Dehydrins: emergence of a biochemical role of a family of plant dehydration proteins. Physiol Plant 97:795–803Google Scholar
  62. Cochard H, Ewers FW, Tyree MT (1994) Water relations of a tropical vine-like bamboo (Rhipidocladum racemiflorum): root pressures, vulnerability to cavitation and seasonal changes in embolism. J Exp Bot 45:1085–1089Google Scholar
  63. Cochard H, Breda N, Granier A (1996) Whole tree hydraulic conductance and water loss regulation in Quercus during drought: evidence for stomatal control of embolism? Ann Sci For 53:197–206Google Scholar
  64. Cochrane TT (1994) A new equation for calculating osmotic potential. Plant Cell Environ 17:427–433Google Scholar
  65. Cohen Y, Li Y (1996) Validating sap flow measurement in field-grown sunflower and corn. J Exp Bot 47:1699–1707Google Scholar
  66. Collier DE, Cummins WR (1993) Effect of osmotic stress on the respiratory properties of shoots and roots of Arnica alpina. Can J Bot 71:1102–1108Google Scholar
  67. Collier DE, Cummins WR (1996) The rate of development of water deficits affects Saxifraga cernua leaf respiration. Physiol Plant 96:291–297Google Scholar
  68. Comper WD (1994) The thermodynamic and hydrodynamic properties of macromolecules that influence the hydrodynamics of porous systems. J Theor Biol 168:421–427PubMedGoogle Scholar
  69. Comstock J, Ehleringer J (1993) Stomatal response to humidity in common bean (Phaseolus vulgaris): implications for maximum transpiration rate, water-use efficiency and productivity. Aust J Plant Physiol 20:669–691Google Scholar
  70. Conti S, Smirnoff N (1994) Rapid triggering of malate accumulation in the C3/CAM intermediate plant Sedum telephium: relationship with water status and phosphoenolpyruvate carboxylase. J Exp Bot 45:1613–1621Google Scholar
  71. Correia MJ, Pereira JS (1994) Abscisic aid in apoplastic sap can account for the restriction in leaf conductance of white lupins during moderate soil drying and after rewatering. Plant Cell Environ 17:845–852Google Scholar
  72. Correia MJ, Pereira JS (1995) The control of leaf conductance of white lupin by xylem ABA concentration decreases with the severity of water deficits. J Exp Bot 46:101–110Google Scholar
  73. Cotelle V, Forestier C, Vavasseur A (1996) A reassessment of the intervention of calmodulin in the regulation of stomatal movement. Physiol Plant 98:619–628Google Scholar
  74. Cousson A, Cotelle V, Vavasseur A (1996) Induction of stomatal closure by vanadate or a light/dark transition involves Ca2+-calmodulin-dependent protein phosphorylation. Plant Physiol 109:491–497Google Scholar
  75. Cui M, Nobel PS (1994) Water budgets and root hydraulic conductivity of opuntias shifted to low temperatures. Int J Plant Sci 155:167–172Google Scholar
  76. Dambrine E, Martin F, Carisey N, Grainer A, Hallgren J-E, Bishop K (1995) Xylem sap composition: a tool for investigating mineral uptake and cycling in adult spruce. Plant Soil 168/169:233–241Google Scholar
  77. Daniels MJ, Chaumont F, Mirkov TE, Chrispeels MJ (1996) Characterization of a new vacuolar membrane aquaporin sensitive to mercury at a unique site. Plant Cell 8:587–599PubMedGoogle Scholar
  78. Darjania L, Curvetto N, Delmastro S (1994) Cytokinins can elicit cytosolic calcium concentration changes in guard cell protoplasts of Vicia faba: presumable linking with cAMP. Biocell 18:59–75Google Scholar
  79. David TS, Ferreira MI, David JS, Pereira JS (1997) Transpiration from a mature Eucalyptus globulus plantation in Portugal during a spring-summer period of progressively higher water deficit. Oecologia 110:153–159Google Scholar
  80. Dawson TE, Pate JS (1996) Seasonal water uptake and movement in root systems of Australian phreatophytic plants of dimorphic root morphology: a stable isotope investigation. Oecologia 107:13–20Google Scholar
  81. DeKock M, Theron KI, Swart P, Weiler EW, Bellstedt DU (1994) Cytokinins in the xylem sap of the dioecious fynbos shrub, Leucadendron rubrum Burm. f.: Seasonal fluctuations and their possible interaction with morphological characteristics as expressed in the two sexes. New Phytol 127:749–759Google Scholar
  82. DeSilva DLR, Mansfield TA (1994) The stomatal physiology of calcium delivered in the xylem sap. Proc R Soc Lond [Biol] 257:81–85Google Scholar
  83. DeSilva DLR, Honour SJ, Mansfield TA (1996) Estimations of apoplastic concentrations of K+ and Ca2+ in the vicinity of stomatal guard cells. New Phytol 134:463–469Google Scholar
  84. DelCordoba-Pedregosa C, Gonzalez-Reyes JA, DelSagrario Canadillas M, Navas P, Cordoba F (1996) Role of apoplastic and cell-wall peroxidases on the stimulation of root elongation by ascorbate. Plant Physiol 112:1119–1125PubMedGoogle Scholar
  85. Dietrich P, Hedrich R (1994) Interconversion of fast and slow gating modes of GCAC1, a guard cell anion channel. Planta 195:301–304Google Scholar
  86. Dolan L (1996) Pattern in the root epidermis: an interplay of diffusible signals and cellular geometry. Ann Bot 77:547–553Google Scholar
  87. Dreesmann DC, Harn C, Daie J (1994) Expression of genes encoding Rubsico in sugarbeet (Beta vulgaris L.) plants subjected to gradual desiccation. Plant Cell Physiol 35:645–653Google Scholar
  88. Dunleavy PJ, Ladley PD (1995) Stomatal responses of Vicia faba L. to indole acetic acid and abscisic acid. J Exp Bot 46:95–100Google Scholar
  89. Dye PJ, Soko S, Poulter AG (1996) Evaluation of the heat pulse velocity method for measuring sap flow in Pinus patula. J Exp Bot 47:975–981Google Scholar
  90. Ebel RC, Stodola AJW, Duan X, Auge RM (1994) Non-hydraulic root-to-shoot signalling in mycorrhizal and non-mycorrhizal sorghum exposed to partial soil drying or root severing. New Phytol 127:495–505Google Scholar
  91. Edelmann HG, Kohler K (1995) Auxin increases elastic wall-properties in rye coleoptiles: implications for the mechanism of wall loosening. Physiol Plant 93:85–92Google Scholar
  92. Edelmann HG, Kutschera U (1993) Tissue pressure and cell-wall metabolism in auxinmediated growth of sunflower hypocotyls. J Plant Physiol 142:467–473Google Scholar
  93. Edwards DR, Dixon MA (1995) Mechanisms of drought response in Thuja occidentalis L.I. Water stress conditioning and osmotic adjustment. Tree Physiol 15:121–127PubMedGoogle Scholar
  94. Edwards WRN, Jarvis PG, Grace J, Moncrieff JB (1994) Reversing cavitation in tracheids of Pinus sylvestris L. under negative water potentials. Plant Cell Environ 17:389–397Google Scholar
  95. Edwards WRN, Becker P, Cermak J (1997) A unified nomenclature for sap flow measurements. Tree Physiol 17:65–67PubMedGoogle Scholar
  96. Eller BM, Ferrari S (1997) Water use efficiency of two succulents with contrasting CO2 fixation pathways. Plant Cell Environ 20:93–100Google Scholar
  97. Else MA, Davies WJ, Whitford PN, Hall KC, Jackson MB (1994) Concentrations of abscisic acid and other solutes in xylem sap from root systems of tomato and castor-oil plants are distorted by wounding and variable sap flow rates. J Exp Bot 45:317–323Google Scholar
  98. Elstner EF, Osswald W (1993) Mechanisms of oxygen activation during plant stress. Proc R Soc Edinb [B] 102:131–154Google Scholar
  99. Engels C, Marschner H (1993) Influence of the form of nitrogen supply on root uptake and translocation of cations in the xylem exudate of maize (Zea mays L.). J Exp Bot 44:1695–1701Google Scholar
  100. Fan S, Blake TJ, Blumwald E (1994) The relative contribution of elastic and osmotic adjustment to turgor maintenance of woody species. Physiol Plant 90:408–413Google Scholar
  101. Farrington P, Turner JV, Gailitis V (1996) Tracing water uptake by jarrah (Eucalyptus marginata) trees using natural abundances of deuterium. Trees 11:9–15Google Scholar
  102. Ferris R, Taylor G (1994) Increased root growth in elevated CO2: a biophysical analysis of root cell elongation. J Exp Bot 45:1603–1612Google Scholar
  103. Finch-Savage WE, Pramanik SK, Bewley JD (1994) The expression of dehydrin proteins in desiccation-sensitive (recalcitrant) seeds of temperate trees. Planta 193:478–485Google Scholar
  104. Franks PJ, Cowan IR, Farquhar GD (1997) The apparent feedforward response of stomata to air vapour pressure deficit: Information revealed by different experimental procedures with two rainforest trees. Plant Cell Environ 20:142–145Google Scholar
  105. Fredericksen TS, Hedden RL, Williams SA (1994) Effect of stem bending on hydraulic conductivity and wood strength of loblolly pine. Can J For Res 24:442–446Google Scholar
  106. Fricke W (1997) Cell turgor, osmotic pressure and water potential in the upper epidermis of barley leaves in relation to cell location and in response to NaCl and air humidity. J Exp Bot 48:45–58Google Scholar
  107. Fricke W, Leigh RA, Tomos AD (1994) Epidermal solute concentrations and osmolality in barley leaves studied at the single-cell level: changes along the leaf blade, during leaf ageing and NaCl stress. Planta 192:317–323Google Scholar
  108. Fricke W, Hinde PS, Leigh RA, Tomos AD (1995) Vacuolar solutes in the upper epidermis of barley leaves: intercellular differences follow patterns. Planta 196:40–49Google Scholar
  109. Fuchs EE, Livingston NJ (1996) Hydraulic control of stomatal conductance in Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] and alder [Alnus rubra (Bong)] seedlings. Plant Cell Environ 19:1091–1098Google Scholar
  110. Gallardo M, Eastham J, Gregory PJ, Turner NC (1996) A comparison of plant hydraulic conductances in wheat and lupins. J Exp Bot 47:233–239Google Scholar
  111. Gallego HA, Rico M, Moreno G, Santa Regina I (1994) Leaf water potential and stomatal conductance in Quercus pyrenaica Willd. forests: vertical gradients and response to environmental factors. Tree Physiol 14:1039–1047PubMedGoogle Scholar
  112. Gibon Y, Bessieres MA, Larher F (1997) Is glycine betaine a non-compatible solute in higher plants that do not accumulate it? Plant Cell Environ 20:329–340Google Scholar
  113. Giraudat J, Parcy F, Bertauche N, Gosti F, Leung J, Morris P-C, Bouvier-Durand M, Vartanian N (1994) Current advances in abscisic acid action and signalling. Plant Mol Biol 26:1557–1577PubMedGoogle Scholar
  114. Gleeson JT, Erramilli S, Gruner SM (1994) Freezing and melting water in lamellar structures. Biophys J 67:706–712PubMedGoogle Scholar
  115. Goh C-H, Kinoshita T, Oku T, Shimazaki K-I (1996) Inhibition of blue light-dependent H+ pumping by abscisic acid in Vicia guard cell protoplasts. Plant Physiol 111:433–440PubMedGoogle Scholar
  116. Grabov A, Blatt MR (1997) Parallel control of the inward-rectifier K+ channel by cytosolic free Ca2+ and pH in Vicia guard cells. Planta 201:84–95Google Scholar
  117. Granier A, Breda N (1996) Modelling canopy conductance and stand transpiration of an oak forest from sap flow measurements. Ann Sci For 53:537–546Google Scholar
  118. Granier A, Anfodillo T, Sabatti M, Chochard H, Dreyer E, Tomasi M, Valentini R, Breda N (1994) Axial and radial water flow in the trunks of oak trees: a quantitative and qualitative analysis. Tree Physiol 14:1383–1396PubMedGoogle Scholar
  119. Griffiths A, Bray EA (1996) Shoot induction of ABA-requiring genes in response to soil drying. J Exp Bot 47:1525–1531Google Scholar
  120. Griffiths A, Parry AD, Jones HG, Tomos AD (1996) Abscisic acid and tugor pressure regulation in tomato roots. J Plant Physiol 149:372–376Google Scholar
  121. Grose MJ, Gilligan CA, Spencer D, Goddard BVD (1996) Spatial heterogeneity of soil water around single roots: use of CT-scanning to predict fungal growth in the rhizosphere. New Phytol 133:261–272Google Scholar
  122. Gucci R, Massai R, Xiloyannis C, Flore JA (1996) The effect of drought and vapour pressure deficit on gas exchange of young kiwifruit (Actinidia deliciosa var. deliciosa) vines. Ann Bot 77:605–613Google Scholar
  123. Guei RG, Wassom CE (1993) Genetics of osmotic adjustment in breeding maize for drought tolerance. Heredity 71:436–441Google Scholar
  124. Guerere I, Tezara W, Herrera C, Fernandez MD, Herrera A (1996) Recycling of C02 during induction of CAM by drought in Talinum paniculatum (Portulacaceae). Physiol Plant 98:471–476Google Scholar
  125. Gunasekera D, Berkowitz GA (1993) Use of transgenic plants with ribulose-l,5-bisphosphate carboxylase/oxygenase antisense DNA to evaluate the rate limitation of photosynthesis underwater stress. Plant Physiol 103:629–635PubMedGoogle Scholar
  126. Gutierrez MV, Harrington RA, Meinzer FC, Fownes JH (1994a) The effect of environmentally induced stem temperature gradients on transpiration estimates from the heat balance method in two tropical woody species. Tree Physiol 14:179–190PubMedGoogle Scholar
  127. Gutierrez MV, Meinzer FC, Grantz DA (1994b) Regulation of transpiration in coffee hedgerows: covariation of environmental variables and apparent responses of stomata to wind and humidity. Plant Cell Environ 17:1305–1313Google Scholar
  128. Hacke U, Sauter JJ (1996a) Drought-induced xylem dysfunction in petioles, branches, and roots of Populus balsamifera L. and Alnus glutinosa (L.) Gaertn. Plant Physiol 111:413–417PubMedGoogle Scholar
  129. Hacke U, Sauter JJ (1996b) Xylem dysfunction during winter and recovery of hydraulic conductivity in diffuse-porous and ring-porous trees. Oecologia 105:435–439Google Scholar
  130. Haines TH (1994) Water transport across biological membranes. FEBS Lett 346:115–122PubMedGoogle Scholar
  131. Hallgren SW, Ruedinger M, Steudle E (1994) Root hydraulic properties of spruce measured with the pressure probe. Plant Soil 167:91–98Google Scholar
  132. Han BD, Kermode AR (1996) Dehydrin-like proteins in castor bean seeds and seedlings are differentially produced in response to ABA and water-deficit-related stresses. J Exp Bot 47:933–939Google Scholar
  133. Han BD, Hughes W, Galau GA, Bewley JD, Kermode AR (1997) Changes in lateembryogenesis- abundant (LEA) messenger RNAs and dehydrins during maturation and premature drying of Ricinus communis L. seeds. Planta 201:27–35PubMedGoogle Scholar
  134. Hao L-M, Wang H-L, Wen J-Q, Liang H-G (1996) Effects of water stress on lightharvesting complex II (LHCII) and expression of a gene encoding LHCII in Zea mays: J Plant Physiol 149:30–34Google Scholar
  135. Hargrave KR, Kolb KJ, Ewers FW, Davis SD (1994) Conduit diameter and droughtinduced embolism in Salvia mellifera Greene (Labiatae). New Phytol 126:695–705Google Scholar
  136. Hartung W, Schiller P, Dietz K-J (1997) Physiology of poikilohydric plants. Prog Bot 59:299–327Google Scholar
  137. Hatton TJ, Moore SJ, Reece PH (1995) Estimating stand transpiration in a Eucalyptus populnea woodland with the heat pulse method: measurement errors and sampling strategies. Tree Physiol 15:219–227PubMedGoogle Scholar
  138. Hedrich R, Dietrich P (1996) Plant K+ channels: similarity and diversity. Bot Acta 109:94–101Google Scholar
  139. Hedrich R, Marten I, Lohse G, Dietrich P, Winter H, Lohaus G, Heldt H-W (1994) Malatesensitive anion channels enable guard cells to sense changes in the ambient C02 concentration. Plant J 6:741–748Google Scholar
  140. Henzler T, Steudle E (1995) Reversible closing of water channels in Char a internodes provides evidence for a composite transport model of the plasma membrane. J Exp Bot 46:199–209Google Scholar
  141. Herbst M, Kappen L, Thamm F, Vanselow R (1996) Simultaneous measurements of transpiration, soil evaporation and total evaporation in a maize field in northern Germany. J Exp Bot 47:1957–1962Google Scholar
  142. Herppich WB (1997) Stomatal responses to changes in air humidity are not necessarily linked to nocturnal C02 uptake in the CAM plant Plectranthus marrubioid. es Benth. (Lamiaceae). Plant Cell Environ 20:393–399Google Scholar
  143. Herzog KM, Thum R, Zweifel R, Hasler R (1997) Heat balance measurements: to quantify sap flow in thin stems only? Agric For Meteorol 83:75–94Google Scholar
  144. Higgs KH, Wood V (1995) Drought susceptibility and xylem dysfunction in seedlings of four European oak species. Ann Sci For 52:507–513Google Scholar
  145. Hirasawa T, Wakabayashi K, Touya S, Ishihara K (1995) Stomatal responses to water deficits and abscisic acid in leaves of sunflower plants (Helianthus annuus L.) grown under different conditions. Plant Cell Physiol 36:955–964Google Scholar
  146. Hoekstra FA, Wolkers WF, Buitink J, Goloyina EA, Crowe JH, Crouwe LM (1997) Membrane stabilization in the dry state. Comp Biochem Physiol [A] 117:335–341Google Scholar
  147. Hohl M, Schopfer P (1995) Rheological analysis of viscoelastic cell wall changes in maize coleoptiles as affected by auxin and osmotic stress. Physiol Plant 94:499–505Google Scholar
  148. Holbrook NM, Burns MJ, Field CB (1995) Negative xylem pressures in plants: a test of the balancing pressure technique. Science 270:1193–1194Google Scholar
  149. Hook PB, Lauenroth WK (1994) Root system response of a perennial bunchgrass to neighbourhood-scale soil water heterogeneity. Funct Ecol 8:738–745Google Scholar
  150. Hoth S, Dreyer I, Dietrich P, Becker D, Mueller-Roeber B, Hedrich R (1997) Molecular basis of plant specific acid activation of K+ uptake channels. Proc Natl Acad Sci USA 94:4806–4810PubMedGoogle Scholar
  151. Huang B, Nobel PS (1994) Root hydraulic conductivity and its components with emphasis on desert succulents. Agron J 86:767–774Google Scholar
  152. Huang B, North GB, Nobel PS (1993) Soil sheaths, photosynthate distribution to roots, and rhizosphere water relations for Opuntia ficus-indica. Int J Plant Sci 154:425–431Google Scholar
  153. Ikeda T (1996) Xylem dysfunction in Bursaphelenchus xylophilus-infected Pinus thunbergii in relation to xylem cavitation and water status. Ann Phytopathol Soc Jpn 62:554–558Google Scholar
  154. Ilan N, Schwartz A, Moran N (1994) External pH effects on the depolarization-activated K channels in guard cell protoplasts of Vicia faba. J Gen Physiol 103:807–831PubMedGoogle Scholar
  155. Ilan N, Schwartz A, Moran N (1996) External protons enhance the activity of the hyperpolarization- activated K channels in guard cell protoplasts of Vicia faba. J Membr Biol 154:169–181PubMedGoogle Scholar
  156. Jackson GE, Grace J (1996) Field measurements of xylem cavitation: are acoustic emissions useful? J Exp Bot 47:1643–1650Google Scholar
  157. Jackson GE, Irvine J, Grace J, Khalil AAM (1995) Abscisic acid concentration and fluxes in droughted conifer saplings. Plant Cell Environ 18:13–22Google Scholar
  158. Jamai A, Rommasini R, Martinoia E, Delrot S (1996) Characterization of glutathione uptake in broad bean leaf protoplasts. Plant Physiol 111:1145–1152PubMedGoogle Scholar
  159. Jarbeau JA, Ewers FW, Davis SD (1995) The mechanism of water-stress-induced embolism in two species of chaparral shrubs. Plant Cell Environ 18:189–196Google Scholar
  160. Jendrasiak G (1996) The hydration of phospholipids and its biological significance. J Nutr Biochem 7:598–609Google Scholar
  161. Jensen AB, Busk PK, Figueras M, Alba MM, Peracchia G, Messeguer R, Goday A, Pages M (1996) Drought signal transduction in plants. Plant Growth Regul 20:105–110Google Scholar
  162. Jensen CR, Mogensen VO, Mortensen G, Andersen MN, Schjoerring JK, Thage JH, Koribidis J (1996) Leaf photosynthesis and drought adaptation in field-grown oilseed rape. Aust J Plant Physiol 23:631–644Google Scholar
  163. Jia W, Zhang J (1997) Comparison of exportation and metabolism of xylem-delivered ABA in maize leaves at different water status and xylem sap pH. Plant Growth Regul 21:43–49Google Scholar
  164. Jia W, Zhang J, Zhang D-P (1996) Metabolism of xylem-delivered ABA in relation to ABA flux and concentration in leaves of maize and Commelina communis. J Exp Bot 47:1085–1091Google Scholar
  165. Jiménez MS, Cermak J, Kucera J, Morales D (1996) Laurel forests in Tenerife, Canary Islands: the annual course of sap flow in Laurus trees and stand. J Hydrol 183:307–321Google Scholar
  166. Johansson I, Larsson C, Ek B, Kjellbom P (1996) The major integral proteins of spinach leaf plasma membranes are putative aquaporins and are phosphorylated in response to Ca2+ and apoplastic water potential. Plant Cell 8:1181–1191PubMedGoogle Scholar
  167. Jokhan AD, Else MA, Jackson MB (1996) Delivery rates of abscisic acid in xylem sap of Ricinus communis L. plants subjected to part-drying of the soil. J Exp Bot 47:1595–1599Google Scholar
  168. Jonak C, Kiegerl S, Ligterink W, Barker PJ, Huskisson NS, Hirt H (1996) Stress signalling in plants: a mitogen-activated protein kinase pathway is activated by cold and drought. Proc Natl Acad Sci USA 93:11274–11279PubMedGoogle Scholar
  169. Kage H, Ehlers W (1996) Does transport of water to roots limit water uptake of field crops? Z Pflanzenernahr Bodenkd 159:583–590Google Scholar
  170. Kameli A, Losel DM (1994) Contribution of carbohydrates and other solutes to osmotic adjustment in wheat leaves under water stress. J Plant Physiol 145:363–366Google Scholar
  171. Katterer T, Fabiao A, Madeira M, Ribeiro C, Steen E (1995) Fine-root dynamics, soil moisture and soil carbon content in a Eucalyptus globulus plantation under different irrigation and fertilisation regimes. For Ecol Manage 74:1–12Google Scholar
  172. Kelly WB, Esser JE, Schroeder JI (1995) Effects of cytosolic calcium and limited, possible dual, effects of G protein modulators on guard cell inward potassium channels. Plant J 8:479–489Google Scholar
  173. Kenis JD, Rouby MB, Edelman MO, Silvente ST (1994) Inhibition of nitrate reductase by water stress and oxygen in detached oat leaves: a possible mechanism of action. J Plant Physiol 144:735–739Google Scholar
  174. Kerstiens G (1997) In vivo manipulation of cuticular water permeance and its effect on stomatal response to air humidity. New Phytol 137:473–480Google Scholar
  175. Kieliszewski MJ, Lamport DTA (1994) Extensin: repetitive motifs, functional sites, posttranslational codes, and phylogeny. Plant J 5:157–172PubMedGoogle Scholar
  176. Koch GW, Amthor JS, Goulden ML (1994) Diurnal patterns of leaf photosynthesis, conductance and water potential at the top of a lowland rain forest canopy in Cameroon: measurements from the Radeau des Chimes. Tree Physiol 14:347–360PubMedGoogle Scholar
  177. Koch MS, Rawlik PS (1993) Transpiration and stomatal conductance of two wetland macrophytes (Cladium jamaicense and Typha domingensis) in the subtropical Everglades. Am J Bot 80:1146–1154Google Scholar
  178. Koeckenberger W, Pope JM, Xia Y, Jeffrey KR, Komor E, Callaghan PT (1997) A noninvasive measurement of phloem and xylem water flow in castor bean seedlings by nuclear magnetic resonance microimaging. Planta 201:53–63Google Scholar
  179. Köhl KI (1996) Population-specific traits and their implication for the evolution of a drought-adapted ecotype in Armeria maritima. Bot Acta 109:206–215Google Scholar
  180. Köhl KI (1997a) The effect of NaCl on growth, dry matter allocation and ion uptake in salt marsh and inland populations of Armeria maritima. New Phytol 135:213–225Google Scholar
  181. Köhl KI (1997b) NaCl homoeostasis as a factor for the survival of the evergreen halophyte Armeria maritima (Mill.) Willd. under salt stress in winter. Plant Cell Environ 20:1253–1263Google Scholar
  182. Kolb KJ, Davis SD (1994) Drought tolerance and xylem embolism in co-occurring species of coastal sage and chaparral. Ecology 75:648–659Google Scholar
  183. Kolb KJ, Sperry JS, Lamont BB (1996) A method for measuring xylem hydraulic conductance and embolism in entire root and shoot systems. J Exp Bot 47:1805–1810Google Scholar
  184. Koster KL, Webb MS, Bryant G, Lynch DV (1994) Interactions between soluble sugars and POPC (l-palmitoyl-2-oleoylphosphatidylcholine) during dehydration: vitrifica tion of sugars alters the phase behavior of the phospholipid. Biochim Biophys Acta 1193:143–150PubMedGoogle Scholar
  185. Köstner B, Biron P, Siegwolf R, Granier A (1996) Estimates of water flux and canopy conductance of Scots pine at the tree level utilizing different xylem sap flow methods. Theor Appl Climatol 53:105–113Google Scholar
  186. Kowalik P, Borghetti M, Borselli L, Magnani F, Sanesi G, Tognetti R (1997) Diurnal water relations of beech (Vagus sylvatica L.) trees in the mountains of Italy. Agric For Meteorol 84:11–23Google Scholar
  187. Kozlov MM, Leikin S, Rand RP (1994) Bending, hydration and interstitial energies quantitatively account for the hexagonal-lamellar-hexagonal reentrant phase transition in dioleoylphosphatidyle thanolamine. Biophys J 67:1603–1611PubMedGoogle Scholar
  188. Kutschera U (1994) Tansley Review no 66. The current status of the acid-growth hypothesis. New Phytol 126:549–569Google Scholar
  189. Kutschera U (1995) Tissue pressure and cell turgor in axial plant organs: implications for the organismal theory of multicellularity. J Plant Physiol 146:126–132Google Scholar
  190. Kutschera U (1996) Cessation of cell elongation in rye coleoptiles is accompanied by a loss of cell-wall plasticity. J Exp Bot 45:591–595Google Scholar
  191. Kutschera U, Köhler K (1994) Cell elongation, turgor and osmotic pressure in developing sunflower hypocotyls. J Exp Bot 45:591–595Google Scholar
  192. Lal A, Edwards GE (1996) Analysis of inhibition of photosynthesis under water stress in the C4 species Amaranthus cruentus and Zea mays: electron transport, CO2 fixation and carboxylation capacity. Aust J Plant Physiol 23:403–412Google Scholar
  193. Langan SJ, Ewers FW, Davis SD (1997) Xylem dysfunction caused by water stress and freezing in two species of co-occurring chaparral shrubs. Plant Cell Environ 20:425–437Google Scholar
  194. Larson DW, Doubt J, Matthes-Sears U (1994) Radially sectored hydraulic pathways in the xylem of Thuja occidentalis as revealed by the use of dyes. Int J Plant Sci 155:569–582Google Scholar
  195. Lebreton C, Lazic-Jancic V, Steed A, Peekic S, Quarrie SA (1995) Identification of QTL for drought responses in maize and their use in testing causal relationships between traits. J Exp Bot 46:853–865Google Scholar
  196. Lee J, Yi H, Lee S, Lee Y (1994) Involvement of G-protein in signal transduction process of abscisic acid-induced stomatal closure. J Plant Biol 37:429–434Google Scholar
  197. Lee KS, Kim J-H (1994) Changes in crassulacean acid metabolism (CAM) of Sedum plants with special reference to soil moisture conditions. J Plant Biol 37:9–15Google Scholar
  198. Lee Y, Choi YB, Suh S, Lee J, Assmann SM, Joe CO, Kelleher JF, Crain RC (1996) Abscisic acid-induced phosphoinositide turnover in guard cell protoplasts of Vicia faba. Plant Physiol 110:987–996PubMedGoogle Scholar
  199. Lemtiri-Chlieh F (1996) Effects of internal K+ and ABA on the voltage- and timedependence of the outward K+-rectifier in Vicia guard cells. J Membr Biol 153:105–116PubMedGoogle Scholar
  200. Lemtiri-Chlieh F, MacRobbie EAC (1994) Role of calcium in the modulation of Vicia guard cell potassium channels by abscisic acid: a patch-clamp study. J Membr Biol 137:99–107PubMedGoogle Scholar
  201. Leone A, Costa A, Grillo S, Tucci M, Horvath I, Vigh L (1996) Acclimation to low water potential determines changes in membrane fatty acid composition and fluidity in potato cells. Plant Cell Environ 19:1103–1109Google Scholar
  202. Leprince O, Hendry GAF, Atherton NM (1994) Free radical processes induced by desiccation in germinating maize: the relationship with respiration and loss of desiccation tolerance. Proc R Soc Edinb [B] 102:211–218Google Scholar
  203. Li J, Assmann SM (1996) An abscisic acid-activated and calcium-independent protein kinase from guard cells of fava bean. Plant Cell 8:2359–2368PubMedGoogle Scholar
  204. Liang J, Zhang J, Wong MH (1997) How do roots control xylem sap ABA concentration in response to soil drying? Plant Cell Physiol 38:10–16Google Scholar
  205. Lindroth A, Cermak J, Kucera J, Cienciala E, Eckersten H (1995) Sap flow by the heat balance method applied to small size Salix trees in a short-rotation forest. Biomass Bioenergy 8:7–15Google Scholar
  206. Lipiec J, Ishioka T, Hatano R, Sakuma T (1993) Effects of soil structural discontinuity on root and shoot growth and water use of maize. Plant Soil 157:65–74Google Scholar
  207. LoGullo MA, Salleo S, Piaceri EC, Rosso R (1995) Relations between vulnerability to xylem embolism and xylem conduit dimensions in young trees of Quercus cerris. Plant Cell Environ 18:661–669Google Scholar
  208. Lopez F, Vansuyt G, Fourcroy P, Casse-Delbart F (1994) Accumulation of a 22-kDa protein and its mRNA in the leaves of Raphanus sativus in response to salt stress or water deficit. Physiol Plant 91:605–614Google Scholar
  209. Lösch R (1995) Plant water relations. Prog Bot 56:56–96Google Scholar
  210. Lösch R (1998) Wasserhaushalt der Pflanzen. Quelle und Meyer, WiesbadenGoogle Scholar
  211. Loustau D, Berbigier P, Roumagnac P, Arruda-Pacheco C, David JS, Ferreira MI, Pereira JS, Tavares R (1996) Transpiration of a 64-year-old maritime pine stand in Portugal. I. Seasonal course of water flux through maritime pine. Oecologia 107:33–42Google Scholar
  212. Lüttge U (1993) The role of Crassulacean acid metabolism (CAM) in the adaptation of plants to salinity. New Phytol 125:59–71Google Scholar
  213. MacFall JS, Johnson GA (1994) The architecture of plant vasculature and transport as seen with magnetic resonance microscopy. Can J Bot 72:1561–1573Google Scholar
  214. Machado J-L, Tyree MT (1994) Patterns of hydraulic architecture and water relations of two tropical canopy trees with contrasting leaf phenologies: Ochroma pyramidale and Pseudobombax septenatum. Tree Physiol 14:219–240PubMedGoogle Scholar
  215. MacRobbie EAC (1995) ABA-induced ion efflux in stomatal guard cells: multiple actions of ABA inside and outside the cell. Plant J 7:565–576Google Scholar
  216. Magnani F, Borghetti M (1995) Interpretation of seasonal changes of xylem embolism and plant hydraulic resistance in Vagus sylvatica. Plant Cell Environ 18:689–696Google Scholar
  217. Magnani F, Centritto M, Grace J (1996) Measurement of apoplasmic and cell-to-cell components of root hydraulic conductance by a pressure-clamp technique. Planta 199:296–306Google Scholar
  218. Makela P, Peltonen-Sainio P, Jokinen K, Peehu E, Setala H, Hinkhanen R, Somersalo S (1996) Uptake and translocation of foliar-applied glycinebetaine in crop plants. Plant Sci 121:221–230Google Scholar
  219. Mansfield TA, DeSilva DLR (1994) Sensory systems in the roots of plants and their role in controlling stomatal function in the leaves. Physiol Chem Phys Med NMR 26:89–99Google Scholar
  220. Mapfumo E, Aspinall D, Hancock T, Sedgley M (1993) Xylem development in relation to water uptake by roots of grapevine (Vitis vinifera L.) New Phytol 125:93–99Google Scholar
  221. Marur CJ, Mazzafera P, Magalhaes AC (1996) Carbon assimilation and export in leaves of cotton plants under water deficit. Rev Bras Fisiol Veg 8:181–186Google Scholar
  222. Maruyama S, Boyer JS (1994) Auxin action on growth in intact plants: threshold turgor is regulated. Planta 193:44–50Google Scholar
  223. Matzner SL, Richards JH (1996) Sagebrush (Artemisia tridentata Nutt.) roots maintain nutrient uptake capacity under water stress. J Exp Bot 47:1045–1056Google Scholar
  224. Mawson BT (1994) Cyanide-resistant, alternative pathway respiration in guard cell protoplasts of Vicia faba. Can J Bot 72:150–156Google Scholar
  225. Mawson BT, Zaugg MZ (1994) Modulation of light-dependent stomatal opening in isolated epidermis following induction of crassulacean acid metabolism in Mesembryanthemum crystallinum L. J Plant Physiol 144:740–746Google Scholar
  226. McAinsh MR, Clayton H, Mansfield TA, Hetherington AM (1996) Changes in stomatal behavior and guard cell cytosolic free calcium in response to oxidative stress. Plant Physiol 111:1031–1042PubMedGoogle Scholar
  227. McCann MC, Roberts K (1994) Changes in cell wall architecture during cell elongation. J Exp Bot 45:1683–1691Google Scholar
  228. McCully ME (1994) Accumulation of high levels of potassium in the developing xylem elements in roots of soybean and some other dicotyledons. Protoplasma 183:116–125Google Scholar
  229. McCully ME, Boyer JS (1997) The expansion of maize root-cap mucilage during hydration. III. Changes in water potential and water content. Physiol Plant 99:169–177Google Scholar
  230. McCully ME, Sealey LJ (1996) The expansion of maize root-cap mucilage during hydration. II. Observations on soil-grown roots by cryo-scanning electron microscopy. Physiol Plant 97:454–462Google Scholar
  231. Mcqueen-Mason SJ, Cosgrove DJ (1994) Disruption of hydrogen bonding between plant cell wall polymers by proteins that induce wall extension. Proc Natl Acad Sci USA 91:6574–6578PubMedGoogle Scholar
  232. Mcqueen-Mason SJ, Cosgrove DJ (1995) Expansin mode of action on cell walls: analysis of wall hydrolysis, stress relaxation, and binding. Plant Physiol 107:87–100PubMedGoogle Scholar
  233. Meidner H, Edwards M (1996) Osmotic and turgor pressures of guard cells. Plant Cell Environ 19:503Google Scholar
  234. Meinzer FC, Fownes JH, Harrington RA (1996) Growth indices and stomatal control of transpiration in Acacia koa stands planted at different densities. Tree Physiol 16:607–615PubMedGoogle Scholar
  235. Mencuccini M, Grace J (1996) Developmental patterns of above-ground hydraulic conductance in a Scots pine (Pinus slyvestris L.) age sequence. Plant Cell Environ 19:939–948Google Scholar
  236. Methy M, Damesin C, Rambal S (1996) Drought and photosystem II activity in two Mediterranean oaks. Ann Sci For 53:255–262Google Scholar
  237. Mia MAR, Bailey MA, Ashley DA, Wells R, Carter TE Jr, Parrott WA, Boerma HR (1996) Molecular markers associated with water use efficiency and leaf ash in soybean. Crop Sci 36:1252–1257Google Scholar
  238. Michel BE, Radcliffe D (1995) A computer program relating solute potential to solute composition for five solutes. Agron J 87:126–130Google Scholar
  239. Miedema H, Assmann SM (1996) A membrane-delimited effect of internal pH on the K+ outward rectifier of Vicia faba guard cells. J Membr Biol 154:227–237PubMedGoogle Scholar
  240. Milburn JA (1996) Sap ascent in vascular plants: challengers to the cohesion theory ignore the significance of immature xylem and the recycling of Munch water. Ann Bot 78:399–407Google Scholar
  241. Mizuno A, Katou K (1996) Regulation of plant elongation growth by surface and xylem proton pumps. J Plant Res 109:85–91Google Scholar
  242. Monneveux P, Belhassen E (1996) The diversity of drought adaptation in the wide. Plant Growth Regul 20:85–92Google Scholar
  243. Monteith JL (1995) A reinterpretation of stomatal responses to humidity. Plant Cell Environ 18:357–364Google Scholar
  244. Mordelet P, Barot S, Abbadie L (1996) Root foraging strategies and soil patchiness in a humid savanna. Plant Soil 182:171–176Google Scholar
  245. Mori IC, Muto S (1997) Abscisic acid activates a 48-kilodalton protein kinase in guard cell protoplasts. Plant Physiol 113:833–839PubMedGoogle Scholar
  246. Motosugi H, Nishijima T, Hiehata N, Koshioka M, Sugiura A (1996) Endogenous gibberellins in the xylem exudate from apple trees. Biosci Biotechnol Biochem 60:1500–1502Google Scholar
  247. Mulholland BJ, Black CR, Taylor IB, Roberts JA, Lenton JR (1996a) Effect of soil compaction on barley (Hordeum vulgare L.) growth. I. Possible role for ABA as a rootsourced chemical signal. J Exp Bot 47:539–549Google Scholar
  248. Mulholland BJ, Taylor IB, Black CR, Roberts JA (1996b) Effect of soil compaction on barley (Hordeum vulgare L.) growth. II. Are increased xylem sap ABA concentration involved in maintaining leaf expansion in compacted soils? J Exp Bot 47:551–556Google Scholar
  249. Munns R, Sharp RE (1993) Involvement of abscisic acid in controlling plant growth in soils of low water potential. Aust J Plant Physiol 20:425–437Google Scholar
  250. Munns R, Passioura JB, Milborrow BV, James RA, Close TJ (1993) Stored xylem sap from wheat and barley in drying soil contains a transpiration inhibitor with a large molecular size. Plant Cell Environ 16:867–872Google Scholar
  251. Myers BA (1995) The influence of the lignotuber on hydraulic conductance and leaf conductance in Eucalyptus behriana seedlings. Aust J Plant Physiol 22:857–863Google Scholar
  252. Nakamoto T (1995) Gravitropic reaction of primary seminal roots of Zea mays L. influenced by temperature and soil water potential. J Plant Res 108:71–75PubMedGoogle Scholar
  253. Navari-Izzo F, Meneguzzo S, Loggini B, Vazzana C, Sgherri CLM (1997) The role of the gluathione system during dehydration of Boea hygroscopica. Physiol Plant 99:23–30Google Scholar
  254. Nejidat A (1995) Possible involvement of calmodulin in the regulation of ATPase activity in guard cells. Physiol Plant 94:411–414Google Scholar
  255. Neumann PM (1995) The role of cell wall adjustment in plant resistance to water deficits. Crop Sci 35:1258–1266Google Scholar
  256. Niu DK, Wang M, Wang YF (1997) Plant cellular osmotica. Acta Biotheor (Leiden) 45:161–169Google Scholar
  257. North GB, Nobel PS (1994) Changes in root hydraulic conductivity for two tropical epiphytic cacti as soil moisture variees. Am J Bot 81:46–53Google Scholar
  258. North GB, Nobel PS (1996) Radial hydraulic conductivity of individual root tissues of Opuntia ficus-indica (L.) Ann Bot 77:133–142Google Scholar
  259. North GB, Nobel PS (1997) Root-soil contact for the desert succulent Agave deserti in wet and drying soil. New Phytol 135:21–29Google Scholar
  260. Oertli JJ (1993) The ascent of sap in trees. Vierteljahresschr Naturforsch Ges Zürich 138:169–190Google Scholar
  261. Ohtake N, Nishiwaki T, Mizukoshi K, Minagawa R, Takahashi Y, Chinushi T, Ohyama T (1995) Amino acid composition in xylem sap of soybean related to the evaluation of N2 fixation by the relative ureide method. Soil Sci Plant Nutr 41:95–102Google Scholar
  262. Oliver AE, Crowe LM, DeAraujo PS, Fisk E, Crowe JH (1996) Arbutin inhibits PLA2 in partially hydrated model systems. Biochim Biophys Acta 1302:69–78PubMedGoogle Scholar
  263. Olsson M, Nilsson K, Liljenberg C, Hendry GAF (1996) Drought stress in seedlings: lipid metabolism and lipid peroxidation during recovery from drought in Lotus corniculatus and Cerastium fontanum. Physiol Plant 96:577–584Google Scholar
  264. Onwona-Agyeman S, Morioka N, Kondo M, Kitagawa K (1995) Seasonal changes in the modulus of elasticity of living branches of three coniferous species. Ecol Res 10:199–206Google Scholar
  265. Oparka KJ (1994) Plasmolysis: new insights into an old process. New Phytol 126:571–591Google Scholar
  266. Osborne DJ, Boubriak II (1994) DNA and desiccation tolerance. Seed Sci Res 4:175–185Google Scholar
  267. Owens MK (1996) The role of leaf and canopy-level gas exchange in the replacement of Quercus virginiana (Fagaceae) by Juniperus ashei (Cupressaceae) in semiarid savannas. Am J Bot 83:617–623Google Scholar
  268. Papageorgiou GC, Murata N (1995) The unusually strong stabilizing effects of glycine betaine on the structure and function of the oxygen-evolving Photosystem II complex. Photosynth Res 44:243–252Google Scholar
  269. Parvathi K, Raghavendra AS (1995) Bioenergetic processes in guard cells related to stomatal function. Physiol Plant 93:146–154Google Scholar
  270. Passioura JB (1994) The physical chemistry of the primary cell wall: implications for the control of expansion rate. J Exp Bot 45:1675–1682Google Scholar
  271. Pate JS, Jeschke WD, Alyward MJ (1995) Hydraulic architecture and xylem structure of the dimorphic root system of Southwest Australian species of Proteaceae. J Exp Bot 46:907–915Google Scholar
  272. Patino S, Tyree MT, Herre EA (1995) Comparison of hydraulic architecture of woody plants of differing phylogeny and growth form with special reference to free-standing and hemi-epiphytic Ficus species from Panama. New Phytol 129:125–135Google Scholar
  273. Pedersen O (1993) Long-distance water transport in aquatic plants. Plant Physiol 103:1369–1375PubMedGoogle Scholar
  274. Pedersen O (1994) Acropetal water transport in submerged plants. Bot Acta 107:61–65Google Scholar
  275. Pedersen O, Sand-Jensen K (1997) Transpiration does not control growth and nutrient supply in the amphibious plant Mentha aquatica. Plant Cell Environ 20:117–123Google Scholar
  276. Pelah D, Shoseyov O, Altman A (1995) Characterization of BspA, a major boiling-stable, water-stress-responsive protein in aspen (Populus tremula). Tree Physiol 15:673–678PubMedGoogle Scholar
  277. Pelah D, Wang W, Altman A, Shoseyov O, Bartels D (1997) Differential accumulation of water stress-related proteins, sucrose synthase and soluble sugars in Populus species that differ in their water stress response. Physiol Plant 99:153–159Google Scholar
  278. Peltier J-P, Marigo G (1996) Adjustment processes in ash and water stress situation. CR Acad Sci [III] 319:425–429Google Scholar
  279. Peltier J-P, Agasse F, DeBock F, Marigo G (1994) Osmotic adjustment in ash and water stress situation. CR Acad Sci [III] 317:679–684Google Scholar
  280. Peng Z-Y, Weyers JDB (1994) Stomatal sensitivity to abscisic acid following water deficit stress. J Exp Bot 45:835–845Google Scholar
  281. Peressotti A, Ham JM (1996) A dual-heater gauge for measuring sap flow with an improved heat-balance method. Agron J 88:149–155Google Scholar
  282. Peters RL, Farquhar ML (1996) Roots hairs: specialized tubular cells extending root surfaces. Bot Rev 62:1–40Google Scholar
  283. Peters WS, Tomos AD (1996) The history of tissue tension. Ann Bot 77:657–665PubMedGoogle Scholar
  284. Peterson CA, Enstone DE (1996) Functions of passage cells in the endodermis and exodermis of roots. Physiol Plant 97:592–598Google Scholar
  285. Peterson CA, Waite JL (1996) The effect of suberin lamellae on the vitality and symplasmic permeability of the onion root exodermis. Can J Bot 74:1220–1226Google Scholar
  286. Phillips N, Oren N, Zimmermann R (1996) Radial patterns of xylem sap flow in non-, diffuse- and ring-porous tree species. Plant Cell Environ 19:983–990Google Scholar
  287. Pitacco A, Gallinaro N (1996) Micrometeorological assessment of sensitivity of canopy resistance to vapour pressure deficit in a Mediterranean oak forest. Ann Sci For 53:513–520Google Scholar
  288. Pitman JI (1996) Ecophysiology of tropical dry evergreen forest, Thailand: measured and modelled stomatal conductance of Hopeaferrea, a dominant canopy emergent. J Appl Ecol 33:1366–1378Google Scholar
  289. Pockman WT, Sperry JS (1997) Freezing-induced xylem cavitation and the northern limit of Larrea tridentata. Oecologia 109:19–27Google Scholar
  290. Polle A, Glavac V (1993) Seasonal changes in the axial distribution of peroxidase activity in the xylem sap of beech (Vagus sylvatica L.) trees. Tree Physiol 13:409–413PubMedGoogle Scholar
  291. Popova LP, Tsonev TD, Lazova GN, Stoinova ZG (1996) Drought- and ABA-induced changes in photosynthesis of barley plants. Physiol Plant 96:623–629Google Scholar
  292. Prakash KR, Rao VS (1996) The altered activities of carbonic anhydrase, phosphoenolpyruvate carboxylase and ribulose bisphosphate carboxylase due to water stress and after its relief. J Environ Biol 17:39–42Google Scholar
  293. Pregitzer KS, Hendrick RL, Fogel RT (1993) The demography of fine roots in response to patches of water and nitrogen. New Phytol 125:575–580Google Scholar
  294. Pritchard J (1994) The control of cell expansion in roots. New Phytol 127:3–26Google Scholar
  295. Pritchard J (1996) Aphid stylectomy reveals an osmotic step between sieve tube and cortical cells in barley roots. J Exp Bot 47:1519–1524Google Scholar
  296. Quarrie SA (1996) New molecular tools to improve the efficiency of breeding for increased drought resistance. Plant Growth Regul 20:167–178Google Scholar
  297. Rascio A, Platani C, Scalfati G, Tonti A, DiFonzo N (1994) The accumulation of solutes and water binding strength in durum wheat. Physiol Plant 90:715–721Google Scholar
  298. Rascio A, Russo M, DiFonzo N (1997) Simplified procedure for estimating tissue affinity for bound water in durum wheat. Crop Sci 37:275–277Google Scholar
  299. Raven JA (1994) Physiological analysis of aspects of the functioning of vascular tissue in early plants. Bot J Scotl 47:49–64Google Scholar
  300. Reddy AR (1996) Fructose 2,6-bisphosphate-modulated photosynthesis in sorghum leaves grown under low water regimes. Phytochemistry 43:319–322Google Scholar
  301. Rekha G, Sudarshana L, Prasad TG, Kulkarni MJ, Sashidar VR (1996) Slower-chemical or faster-electrical signalling under stress in plants: is it the hare and tortoise story of a slower signal winning the race? Curr Sci 71:284–289Google Scholar
  302. Rennenberg H, Schupp R, Glavac V, Jochheim H (1994) Xylem sap composition for beech (Fagus sylvatica L.) trees: seasonal changes in the axial distribution of sulfur compounds. Tree Physiol 14:541–548PubMedGoogle Scholar
  303. Richter H (1997) Water relations of plants in the field: some comments on the measurement of selected parameters. J Exp Bot 48:1–7Google Scholar
  304. Ridolfi M, Garrec JP, Louguet P, Laffray D (1994) Effects of potassium and calcium deficiencies on stomatal functioning in intact leaves of Vicia faba. Can J Bot 72:1835–1842Google Scholar
  305. Rieger M (1995) Offsetting effects of reduced root hydraulic conductivity and osmotic adjustment following drought. Tree Physiol 15:379–385PubMedGoogle Scholar
  306. Ristic Z, Williams G, Yang G, Martin B, Fullerton S (1996) Dehydration, damage to cellular membranes, and heat-shock proteins in maize hybrids from different climates. J Plant Physiol 149:424–432Google Scholar
  307. Rivoal J, Hanson AD (1994b) Choline-O-sulfate biosynthesis in plants: identification and partial characterization of a salinity-inducible choline sulfotransferase from species of Limonium (Plumbaginaceae). Plant Physiol 106:1187–1193PubMedGoogle Scholar
  308. Roth A (1996) Water transport in xylem conduits with ring thickenings. Plant Cell Environ 19:622–629Google Scholar
  309. Roth A, Mosbrugger B (1996) Numerical studies of water conduction in land plants: evolution of early stele types. Paleobiology 22:411–421Google Scholar
  310. Roth A, Mosbrugger V, Neugebauer HJ (1994a) Efficiency and evolution of water transport systems in higher plants: a modelling approach. I. The earliest land plants. Philos Trans R Soc Lond [Biol] 345:137–152Google Scholar
  311. Roth A, Mosbrugger V, Neugebauer HJ (1994b) Efficiency and evolution of water transport systems in higher plants: a modelling approach. II. Stelar evolution. Philos Trans R Soc Lond [Biol] 345:153–162Google Scholar
  312. Rucker KS, Kvien CK, Holbrook CC, Hook JE (1995) Identification of peanut genotypes with improved drought-avoidance traits. Peanut Sci 22:14–18Google Scholar
  313. Sala A, Tenhunen JD (1996) Simulations of canopy net photosynthesis and transpiration in Quercus ilex L. under the influence of seasonal drought. Agric For Meteorol 78:203–222Google Scholar
  314. Santrucek J, Sage RF (1996) Acclimation of stomatal conductance to a CO2-enriched atmosphere and elevated temperature in Chenopodium album. Aust J Plant Physiol 23:467–478Google Scholar
  315. Savoure A, Hua X-J, Bertauche N, VanMontagu M, Verbruggen N (1997) Abscisic acidindependent and abscisic acid-dependent regulation of proline biosynthesis following cold and osmotic stresses in Arabidopsis thaliana. Mol Gen Genet 254:104–109PubMedGoogle Scholar
  316. Schill V, Hartung W, Orthen B, Weisenseel MH (1996) The xylem sap of maple (Acer platanoides) trees - sap obtained by a novel mthod shows changes with season and height. J Exp Bot 47:128–133Google Scholar
  317. Schmidt C, Schroeder JI (1994) Anion selectivity of slow anion channels in the plasma membrane of guard cells: large nitrate permeability. Plant Physiol 106:383–391PubMedGoogle Scholar
  318. Schneider A, Kreuzwieser J, Schupp R, Sauter JJ, Rennenberg H (1994) Thiol and amino acid composition of the xylem sap of poplar trees (Populus x canadensis robusta). Can J Bot 72:347–351Google Scholar
  319. Schulte PJ, Castle AL (1993a) Water flow through vessel perforation plates: the effects of plate angle and thickness for Liriodendron tulipifera. J Exp Bot 44:1143–1148Google Scholar
  320. Schulte PJ, Castle AL (1993b) Water flow through vessel perforation plates: a fluid mechanical approach. J Exp Bot 44:1135–1142Google Scholar
  321. Schulz-Lessdorf B, Lohse G, Hedrich R (1996) GCAC1 recognizes the pH gradient across the plasma membrane: a pH-sensitive and ATP-dependent anion channel links guard cell membrane potential to acid and energy metabolism. Plant J 10:993–1004Google Scholar
  322. Schurr U, Schulze E-D (1995) The concentration of xylem sap constituents in root exudate, and in sap from intact, transpiring castor bean plants (Ricinus communis L.). Plant Cell Environ 18:409–420Google Scholar
  323. Schwartz A, Wu W-H, Tucker EB, Assmann SM (1994) Inhibition of inward K+ channels and stomatal response by abscisic acids: an intracellular locus of phytohormone action. Proc Natl Acad Sci USA 91:4019–4023PubMedGoogle Scholar
  324. Schwartz A, Ilan N, Schwarz M, Scheaffer J, Assmann SM, Schroeder JI (1995) Anion channel blockers inhibit S-type anion channels and abscisic acid responses in guard cells. Plant Physiol 109:651–658PubMedGoogle Scholar
  325. Sealey LJ, McCully ME, Canny MJ (1995) The expansion of maize root-cap mucilage during hydration: I. Kinetics. Physiol Plant 93:38–46Google Scholar
  326. Seifert U, Langer SA (1994) Hydrodynamics of membranes: the bilayer aspect and adhesion. Biophys Chem 49:13–22Google Scholar
  327. Serpe MD, Matthews MA (1994) Changes in cell wall yielding and stored growth in Begonia argenteo-guttata L. leaves during the development of water deficits. Plant Cell Physiol 35:619–626Google Scholar
  328. Sgherri CLM, Navari-Izzo F (1995) Sunflower seedlings subjected to increasing water deficit stress: oxidative stress and defence mechanisms. Physiol Plant 93:25–30Google Scholar
  329. Sharp RE, Wu Y, Voetberg GS, Saab IN, Lenoble ME (1994) Confirmation that abscisic acid accumulation is required for maize primary root elongation at low water potentials. J Exp Bot 45:1743–1751Google Scholar
  330. Smirnoff N (1993) Tansley Review no 52. The role of active oxygen in the response of plants to water deficit and desiccation. New Phytol 125:27–58Google Scholar
  331. Smith A (1994) Xylem transport and the negative pressures sustainable by water. Ann Bot 74:647–651Google Scholar
  332. Smith DM, Allen SJ (1996) Measurement of sap flow in plant stems. J Exp Bot 47:1833–1844Google Scholar
  333. Sobrado MA (1993) Trade-off between water transport efficiency and leaf life-span in a tropical dry forest. Oecologia 96:19–23Google Scholar
  334. Sobrado MA (1996) Embolism vulnerability of an evergreen tree. Biol Plant 38:297–301Google Scholar
  335. Sperry JS, Ikeda T (1997) Xylem cavitation in roots and stems of Douglas-fir and white fir. Tree Physiol 17:275–280PubMedGoogle Scholar
  336. Sperry JS, Saliendra NZ (1994) Intra- and inter-plant variation in xylem cavitation in Betula occidentalis. Plant Cell Environ 17:1233–1241Google Scholar
  337. Sperry JS, Nichols KL, Sullivan JEM, Eastlack SE (1994) Xylem embolism in ring-porous, diffuse-porous, and coniferous tress of northern Utah and interior Alaska. Ecology 75:1736–1752Google Scholar
  338. Sperry JS, Saliendra NZ, Pockman WT, Cockhard H, Cruiziat P, Davis SD, Ewers FW, Tyree MT (1996) New evidence for large negative xylem pressures and their measurement by the pressure chamber method. Plant Cell Environ 19:427–436Google Scholar
  339. Spollen WG, Nelson CJ (1994) Response of fructan to water deficit in growing leaves of tall fescue. Plant Physiol 106:329–336PubMedGoogle Scholar
  340. Stanca AM, Crosatti C, Grossi M, Lacerenza NG, Rizza F, Cattivelli L (1996) Molecular adaptation of barley to cold and drought conditions. Euphytica 92:215–219Google Scholar
  341. Steudle E (1994) Water transport across roots. Plant Soil 167:79–90Google Scholar
  342. Steudle E (1995) Trees under tension. Nature 378:663–664Google Scholar
  343. Steudle E, Frensch J (1996) Water transport in plants: role of the apoplast. Plant Soil 187:67–79Google Scholar
  344. Steudle E, Murrmann M, Peterson CA (1993) Transport of water and solutes across maize roots modified by puncturing the endodermis. Plant Physiol 103:335–349PubMedGoogle Scholar
  345. Svetek J, Schara M, Nemec M, Nothnagel EA (1994) Osmolality effects on membrane transport properties and membrane domain structure measured in maize root tissue in situ by spin probe EPR. Acta Pharm 44:297–307Google Scholar
  346. Sytsma MD, Anderson LWJ (1993) Transpiration by an emergent macrophyte: source of water and implications for nutrient supply. Hydrobiologia 271:97–108Google Scholar
  347. Takahashi H (1994) Hydrotropism and its interaction with gravitropism in roots. Plant Soil 165:301–308Google Scholar
  348. Tallman G, Zhu J, Mawson BT, Amodeo G, Nouhi Z, Levy K, Zeiger E (1997) Induction of CAM in Mesembryanthemum crystallinum abolishes the stomatal response to blue light and light-dependent zeaxanthin formation in guard cell chloroplasts. Plant Cell Physiol 38:236–242Google Scholar
  349. Tardieu F (1996) Drought perception by plants. Do cells of droughted plants experience water stress? Plant Growth Regul 20:93–104Google Scholar
  350. Tazawa M, Asai K, Iwasaki N (1996) Characteristics of Hg- and Zn-sensitive water channels in the plasma membrane of Chara cells. Bot Acta 109:388–396Google Scholar
  351. Tewolde H, Dobrenz AK, Voigt RL (1993) Seasonal trends in leaf photosynthesis and stomatal conductance of drought stressed and nonstressed pearl millet as associated to vapor pressure deficit. Photosynth Res 38:41–49Google Scholar
  352. Thiel G, Blatt MR, Fricker MD, White IR, Millner P (1993) Modulation of K+channels in Vicia stomatal guard cells by peptide homologs to the auxin-binding protein C terminus. Proc Natl Acad Sci USA 90:11493–11497PubMedGoogle Scholar
  353. Thorburn PJ, Ehleringer JR (1995) Root water uptake of field-growing plants indicated by measurements of natural-abundance deuterium. Plant Soil 177:225–233Google Scholar
  354. Thorburn PJ, Walker GR (1994) Variation in stream water uptake by Eucalyptus camaldulensis with differing access to stream water. Oecologia 100:293–301Google Scholar
  355. Tognetti R, Borghetti M (1994) Formation and seasonal occurrence of xylem embolism in Alnus cordata. Tree Physiol 14:241–250PubMedGoogle Scholar
  356. Tognetti R, Johnson JD, Michelozzi M (1995) The response of European beech (Fagus sylvatica L.) seedlings from two Italian populations to drought and recovery. Trees 9:348–354Google Scholar
  357. Tomos D, Pritchard J (1994) Biophysical and biochemical control of cell expansion in roots and leaves. J Exp Bot 45:1721–1731Google Scholar
  358. Triboulot MB, Pritchard J, Tomos D (1995) Stimulation and inhibition of pine root growth by osmotic stress. New Phytol 130:169–175Google Scholar
  359. Triboulot MB, Fauveau ML, Breda N, Label P, Dreyer E (1996) Stomatal conductance and xylem-sap abscisic acid (ABA) in adult oak trees during a gradually imposed drought. Ann Sci For 53:207–220Google Scholar
  360. Tschaplinski TJ, Tuskan GA (1994) Water-stress tolerance of black and eastern cottonwood clones and four hybrid progeny: II Metabolites and inorganic ions that constitute osmotic adjustment. Can J For Res 24:681–687Google Scholar
  361. Tuinstra MR, Grote EM, Goldsbrough PB, Ejeta G (1996) Identification of quantitative trait loci associated with pre-flowering drought tolerance in sorghum. Crop Sci 36:1337–1344Google Scholar
  362. Turner A, Wells B, Roberts K (1994) Plasmodesmata of maize root tips: structure and composition. J Cell Sci 107:3351–33612PubMedGoogle Scholar
  363. Tyree MT, Cochard H (1996) Summer and winter embolism in oak: impact on water relations. Ann Sci For 53:173–180Google Scholar
  364. Tyree MT, Cochard H, Cruiziat P, Sinclair B, Ameglio T (1993) Drought-induced leaf shedding in walnut: evidence for vulnerability segmentation. Plant Cell Environ 16:879–882Google Scholar
  365. Tyree MT, Davis SD, Cochard H (1994a) Biophysical perspectives of xylem evolution: is there a tradeoff of hydraulic efficacy for vulnerability to dysfunction? Int Assoc Wood Anat J 15:335–360Google Scholar
  366. Tyree MT, Kolb KJ, Rood SB, Patino S (1994b) Vulnerability to drought-induced cavitation of riparian cottonwoods in Alberta: a possible factor in the decline of the ecosystem? Tree Physiol 14:455–466PubMedGoogle Scholar
  367. Ulrich AS, Watts A (1994a) Molecular response of the lipid headgroup to bilayer hydration monitored by2H-NMR. Biophys J 66:1441–1449PubMedGoogle Scholar
  368. Ulrich AS, Watts A (1994b) Lipid headgroup hydration studied by 2H-NMR: a link between spectroscopy and thermodynamics. Biophys Chem 49:39–50Google Scholar
  369. Urrestarazu M, Sanchez A, Lorente FA, Guzman M (1996a) Chronophysiologic rhythm model for daily ionic variation of xylematic exudates in tomato plants. Commun Soil Sci Plant Anal 27:1843–1858Google Scholar
  370. Urrestarazu M, Sanchez A, Lorente FA, Guzman M (1996b) A daily rhythmic model for pH and volume from xylem sap of tomato plants. Commun Soil Sci Plant Anal 27:1859–1874Google Scholar
  371. VanAs H, Reinders JEA, DeJager PA, VanDe Sanden PACM, Schaafsma TJ (1994) In situ plant water balance studies using a portable NMR spectrometer. J Exp Bot 45:61–67Google Scholar
  372. VanDoom WG, Jones RB (1994) Ultrasonic acoustic emissions from excised stems of two Thryptomene species. Physiol Plant 92:431–436Google Scholar
  373. VanDoom WG, Suiro V (1996) Relationship between cavitation and water uptake in rose stems. Physiol Plant 96:305–311Google Scholar
  374. VanSplunder I, Voesenek LACJ, Coops H, DeVries XJA, Bloom CWPM (1996) Morphological responses of seedlings of four species of Salicaceae to drought. Can J Bot 74:1988–1995Google Scholar
  375. Varney GT, McCully ME, Canny MJ (1993) Sites of entry of water into the symplast of maize roots. New Phytol 125:733–741Google Scholar
  376. Vartanian N (1996) Mutants as tools to understand cellular and molecular drought tolerance mechanisms. Plant Growth Regul 20:125–134Google Scholar
  377. Vartanian N, Marcotte L, Giraudat J (1994) Drought rhizogenesis in Arabidopsis thaliana. Plant Physiol 104:761–767PubMedGoogle Scholar
  378. Verbruggen N, Villarroel R, VanMontagu M (1993) Osmoregulation of a pyrroline-5- carboxylate reductase gene in Arabidopsis thaliana. Plant Physiol 103:771–781PubMedGoogle Scholar
  379. Vojtechova M, Hanson AD, Munoz-Clares RA (1997) Betaine-aldehyde dehydrogenase from amaranth leaves efficiently catalyzes the NAD-dependent oxidation of dimethylsulfoniopropionaldehyde to dimethylsulfoniopropionate. Arch Biochem Biophys 337:81–88PubMedGoogle Scholar
  380. Wan C, Sosebee RE, McMichael BL (1994) Hydraulic properties of shallow vs. deep lateral roots in a semiarid shrub. Am Midi Nat 131:120–127Google Scholar
  381. Wang XL, McCully ME, Canny MJ (1994) The branch roots of Zea. IV. The maturation and openness of xylem conduits in first-order branches of soil-grown roots. New Phytol 126:21–29Google Scholar
  382. Wang Z, Quebedeaux B, Stutte GW (1995) Osmotic adjustment: effect of water stress on carbohydrates in leaves, stems and roots of apple. Aust J Plant Physiol 22:747–754Google Scholar
  383. Wang Z, Quebedeaux B, Stutte GW (1996) Partitioning of [14C]glucose into sorbitol and other carbohydrates in apple under water stress. Aust J Plant Physiol 23:245–251Google Scholar
  384. Ward JM, Schroeder JI (1994) Calcium-activated K+channels and calcium-induced calcium release by slow vacuolar ion channels in guard cell vacuoles implicated in the control of stomatal closure. Plant Cell 6:669–683PubMedGoogle Scholar
  385. Watt M, VanDer Weele CM, McCully ME, Canny MJ (1996) Effects of local variations in soil moisture and hydrophobic deposits and dye diffusion in corn roots. Bot Acta 109:492–501Google Scholar
  386. Webb AAR, Mcainsh MR, Mansfield TA, Hetherington AM (1996) Carbon dioxide induces increases in guard cell cytosolic free calcium. Plant J 9:297–304Google Scholar
  387. Wegner LH, Raschke K (1994) Ion channels in the xylem parenchyma of barley roots: a procedure to isolate protoplasts from this tissue and a patch-clamp exploration of salt passageways into xylem vessels. Plant Physiol 105:799–813PubMedGoogle Scholar
  388. Weibel FP, DeVos JA (1994) Transpiration measurements on apple trees with an improved stem heat balance method. Plant Soil 166:203–219Google Scholar
  389. Welling DJ, Welling PA, Welling LW (1996) Filled pore approximation: a theoretical framework for solute-solvent coupling in narrow water channels. Am J Physiol 270:C1246–C1254PubMedGoogle Scholar
  390. Westgate ME, Passioura JB, Munns R (1996) Water status and ABA content of floral organs in drought-stressed wheat. Aust Plant Physiol 23:763–772Google Scholar
  391. White G, Pencer J, Nickel BG, Wood JM, Hallen FR (1996) Optical changes in unilamellar vesicles experiencing osmotic stress. Biophys J 71:2701–2715PubMedGoogle Scholar
  392. Wilkinson S, Davies WJ (1997) Xylem sap pH increase: a drought signal received at the apoplastic face of the guard cell that involves the suppression of saturable abscisic acid uptake by the epidermal symplast. Plant Physiol 113:559–573PubMedGoogle Scholar
  393. Willmer CM, Grammatikopoulos G, Lasceve G, Vavasseur A (1995) Characterization of the vacuolar-type H+-ATPase from guard cell protoplasts of Commelina. J Exp Bot 46:383–389Google Scholar
  394. Wilson KB, Bunce JA (1997) Effects of carbon dioxide concentration on the interactive effects of temperature and water vapour on stomatal conductance in soybean. Plant Cell Environ 20:230–238Google Scholar
  395. Wood AJ, Goldsbrough PB (1997) Characterization and expression of dehydrins in water- stressed Sorghum bicolor. Physiol Plant 99:144–152Google Scholar
  396. Wood AJ, Saneoka H, Rhodes D, Joly RJ, Goldsbrough PB (1996) Betaine aldehyde dehydrogenase in sorghum. Molecular cloning and expression of two related genes. Plant Physiol 110:1301–1308PubMedGoogle Scholar
  397. Wraith JM, Baker JM, Blake TK (1995) Water uptake resumption following soil drought: a comparison among four barley genotypes. J Exp Bot 46:873–880Google Scholar
  398. Wu W-H (1995) A novel cation channel in Vicia faba guard-cell plasma membrane. Acta Phytophysiol Sin 21:347–354Google Scholar
  399. Wu W-H, Assmann SM (1994) A membrane-delimited pathway of G-protein regulation of the guard-cell inward K+ channel. Proc Natl Acad Sci USA 91:6310–6314PubMedGoogle Scholar
  400. Wu W-H, Assmann SM (1995) Is ATP required for K+ channel activation in Vicia guard cells? Plant Physiol 107:101–109PubMedGoogle Scholar
  401. Wu Y, Spollen WG, Sharp RE (1994) Root growth maintenance at low water potentials: increased activity of xyloglucan endotransglyosylase and its possible regulation by abscisic acid. Plant Physiol 106:607–615PubMedGoogle Scholar
  402. Wu Y, Sharp RE, Durachko DM, Cosgrove DJ (1996) Growth maintenance of the maize primary root at low water potentials involves increases in cell-wall extension properties, expansion activity, and wall susceptibility to expansions. Plant Physiol 111:765–772PubMedGoogle Scholar
  403. Yamada M, Sato S (1996) Effect of hypoxia on nucleoli in excised root tips of Vicia faba: immunoelectron microscopy using anti-DNA antibodies. Cytologia 61:403–410Google Scholar
  404. Yang S, Grantz DA (1996) Root hydraulic conductance in pima cotton: comparison of reverse flow, transpiration, and root pressurization. Crop Sci 36:1580–1589Google Scholar
  405. Yu G-R, Nakayama K, Lu H-Q (1996) Responses of stomatal conductance in field-grown maize leaves to certain environmental factors over a long term. J Agric Meteorol 52:311–320Google Scholar
  406. Zagdanska B, Kozdoj J (1994) Water stress-induced changes in morphology and anatomy of flag leaf of spring wheat. Acta Soc Bot Pol 63:61–66Google Scholar
  407. Zhang J, Kirkham MB (1996) Antioxidant responses to drought in sunflower and sorghum seedlings. New Physiol 132:361–373Google Scholar
  408. Zhang J, Tardieu F (1996) Relative contribution of apices and mature tissues to ABA synthesis in droughted maize root systems. Plant Cell Physiol 37:598–605Google Scholar
  409. Zhang J, Jia W, Zhang D-P (1997) Effect of leaf water status and xylem pH on metabolism of xylem-transported abscisic acid. Plant Growth Regul 21:51–58Google Scholar
  410. Zhu D, Scandalios JG (1994) Differential accumulation of manganese-superoxide dismutase transcripts in maize in response to abscisic acid and high osmoticum. Plant Physiol 106:173–178PubMedGoogle Scholar
  411. Zimmermann U, Zhu JJ, Meinzer FC, Goldstein G, Schneider H, Zimmermann G, Benkert R, Thuermer F, Melcher P, Webb D, Haase A (1994) High molecular weight organic compounds in the xylem sap of mangroves: Implications for long-distance water transport. Bot Acta 107:218–229Google Scholar
  412. Zotz G, Tyree MT, Cochard H (1994) Hydraulic architecture, water relations and vulnerability to cavitation of Clusia uvitana Pittier: a C3-CAM tropical hemiepiphyte. New Phytol 127:287–295Google Scholar
  413. Zwieniecki MA, Newton M (1995) Roots growing in rock fissures: their morphological adaptation. Plant Soil 172:181–187Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Rainer Lösch
    • 1
  1. 1.Abt. GeobotanikHeinrich-Heine-UniversitätDüsseldorfGermany

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