Abstract
During pollen development, soluble carbohydrates of sporophytic origin may be consumed immediately, polymerized to form starch reserves or intine, or transformed into other molecules. Disregarding intine, in mature pollen there are three different types of carbohydrates: (1) polysaccharides such as starch in amyloplasts or polysaccharides in cytoplasmic vesicles, (2) disaccharides such as sucrose and (3) monosaccharides such as glucose and fructose. At dispersal, pollen may be partly or slightly dehydrated, or not dehydrated at all. Partly dehydrated pollen has the capacity to lose or acquire water within limits without detriment to its viability. Slightly and non-dehydrated pollen is vulnerable to water loss and quickly becomes inviable. In partly dehydrated of pollen the carbohydrates consist of cytoplasmic polysacharides and sucrose; in slightly and non-dehydrated pollen these are absent or in low concentrations but there may be reserves of cytoplasmic callose. Starch, glucose and fructose are found in both types. It is postulated that cytoplasmic carbohydrates and sucrose are involved in protecting pollen viability during exposure and dispersal.
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Baker HG, Baker I (1983), Some evolutionary and taxonomic implications of variation in the chemical composition of pollen. In: Mulcahy DL, Ottaviano E (eds) Pollen biology and implications in plant breeding. Elsevier, New York, pp 43–52
Bassani M, Pacini E, Franchi GG (1994) Humidity stress responses in pollen of anemophilous and entomophilous species. Grana 33:146–150
Brown RC, Lemmon BE (1981) Aperture development in spores of the mossTrematodon longicollis Mx. Protoplasma 106:273–287
Buitink J, Walters-Vertucci C, Hoekstra FA, Leprince O (1996) Calorimetric properties of dehydrating pollen. Plant Physiol 111:235–242
Clement C, Chavant L, Burrus M, Audran JC (1994) Anther starch variations inLilium during pollen development. Sex Plant Reprod 7:347–356.
Cran DR (1979) The ultrastructure of fern gametophyte cells. In: Dyer AF (ed) The experimental biology of ferns. Academic Press, London, pp 171–213
Ducker SC, Pettitt JM, Knox RB (1978) Biology of Australian sea grasses: pollen development and submarine pollination inAmphibolis antarctica andThalassodendron ciliatum (Cymodoceaceae) Aust J Bot 26:265–285
Dumas C, Duplan J-C, Said C, Soulier J-P (1983)1H nuclear magnetic resonance to correlate water content and pollen viability. In: Mulcahy DL, Ottaviano E (eds) Pollen biology and implications in plant breeding. Elsevier, New York, pp 15–20
Franchi GG, Pacini E, Rottoli P (1984) Pollen grain viability inParietaria judaica L. during the long blooming period and correlation with meteorological conditions and allergic diseases. G Bot Ital 118:163–178
Franchi GG, Bellani L, Nepi M, Pacini E (1996) Types of carbohydrate reserves in pollen: localization, systematic distribution and ecophysiological significance. Flora 191:1–17
Heslop-Harrison J (1979) An interpretation of the hydrodynamics of pollen. Am J Bot 66:737–743
Hoekstra FA, Roekel T van 1988) Desiccation tolerance ofPapaver dubium L. pollen during its development in the anther. Plant Physiol 88:626–632
Hoekstra FA, Crowe JH, Crowe LM (1989) Differential desiccation sensitivity of corn andPennisetum pollen linked to their sucrose contents. Plant Cell Environ 12: 83–91
Hoekstra FA, Crowe JH, Crowe LM (1991) Effect of sucrose on phase behaviour of membranes in intact pollen ofTypha latifolia L., as measured with Fourier transform infrared spectroscopy. Plant Physiol 97:1073–1079
Hoekstra FA, Crowe JH, Crowe LM, Roekel T van, Vermeer E (1992) Do phospholipids and sucrose determine membrane phase transitions in dehydrating pollen species? Plant Cell Environ 15:601–606
Keijzer CJ (1987) The process of anther dehiscence and pollen dispersal. I. The opening mechanism of longitudinal dehiscing anthers. New Phytol 105:487–498
Lisci M, Tanda C, Pacini E (1994) Pollination ecophysiology ofMercurialis annua L.(Euphorbiaceae), and anemophilous species flowering all year round. Ann Bot 74:125–135
Lisci M, Cardinali G, Pacini E (in press) Pollen dispersal and role of pollenkitt inMercurialis annua L. (Euphorbiaceae). Flora
Neidhart HV (1979) Comparative studies of sporogenesis in bryophytes. In: Clarke GCS, Duckett JS (eds) Bryophyte systematics. Academic Press, London, pp 251–280
Nepi M, Pacini E (1993) Pollination, pollen viability and pistil receptivity inCucurbita pepo. Ann Bot 72:526–536
Nepi M, Ciampolini F, Pacini E (1995) Development ofCucurbita pepo pollen. Ultrastructure and histochemistry of the sporoderm. Can J Bot 73:1046–1057
Nipi M, Ciampolini F, Pacini E (1996) Plastid differentiation duringCucurbita pepo (Cucurbitaceae) pollen grain development. Sex Plant Reprod 9:17–24
O'Brien TP, McCully ME (1981) The study of plant structure. Principles and selected methods. Thermarcarphi, Melbourne
Pacini E (1990a) Tapetum and microspore function. In: Blackmore S, Knox RB (eds) Microsporogenesis: ontogeny and systematic. Academic Press, London, pp 213–237
Pacini E (1990b) Harmomegathic characters of Pteridophyta spores and Spermatophyta pollen. In: Hesse M, Ehrendorfer F (eds)_Morphology, development and systematic relevance of pollen and spores. Springer, Vienna, pp 53–69
Pacini E (1994) Cell biology of anther and pollen development. In: Williams EG, Knox RB, Clarke AE (eds) Genetic control of self incompatibility and reproductive development in flowering plants. Kluwer, Dordrecht, pp 289–308
Pacini E, Franchi GG (1988) Amylogenesis and amylolysis during pollen grain development. In: Cresti M, Gori P, Pacini E (eds) Sexual reproduction in higher plants Springer, Berlin Heidelberg New York, pp 181–186
Pacini E, Juniper BJ (1984) The ultrastructure of pollen grain development inLycopersicum peruvianon. Caryologia 37:21–50
Pacini E, Viegi L (1995) Total polysaccharide content of developing pollen in two angiosperm species. Grana 34:237–241
Pacini E, Taylor PE, Singh MB, Knox RB (1992a) Plastid developmental pathway in some angiosperm reproductive cells. In: Ottaviano E Mulcahy DL, Sari-Gorla (eds) Angiosperm pollen and ovules. Springer, New York Berlin Heidelberg, pp 36–42
Pacini E, Taylor PE, Singh MB, Knox RB (1992b) Development of plastids, including amyloplasts and starch granules, in pollen and tapetum of rye-grass,Lolium perenne. Ann Bot 70:179–188
Pandolfi T, Pacini E, Calder DM (1993) Ontogenesis of monad pollen inPterostylis plumosa (Orchidaceae Neottioideae). Plant Syst Evol 186:175–185
Stanley RG, Linskens HF (1974) Pollen: biology, biochemistry and management. Springer, Berlin Heidelberg New York
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Pacini, E. Types and meaning of pollen carbohydrate reserves. Sexual Plant Reprod 9, 362–366 (1996). https://doi.org/10.1007/BF02441957
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DOI: https://doi.org/10.1007/BF02441957