Abstract
The influence of gravitropic stimulation upon blue-light-induced first positive phototropism for stimulations in the same (light source and center of gravity opposite to each other) and in opposing directions was investigated in maize cole-optiles by measuring fluence-response patterns. As a result of gravitropic counterstimulation, phototropic bending was transient with maximum curvature occurring 100 min after stimulation. On a horizontal clinostat, however, the seedlings curved for 20 h. Gravistimulation in the opposite direction acted additively upon blue-light curvature. Gravistimulation in the same direction as phototropic stimulation produced a complex behaviour deviating from simple additivity. This pattern can be explained by a gravitropically mediated sensitization of the phototropic reaction, an optimal dependence of differential growth on the sum of photo-and gravistimulation, and blue-light-induced inhibition of gravitropic curvature at high fluences. These findings indicate that several steps of photo-and gravitransduction are separate. Preirradiation with red light desensitized the system independently of applied gravity-treatment, indicating that the site of red-light interaction is common to both transduction chains.
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Abbreviations
- BL:
-
blue light
- G+ :
-
stimulation by light and gravity in the same direction (i.e. light source and center of gravity opposite to each other)
- G- :
-
stimulation by light and gravity in opposing directions
References
Blaauw, O.H. (1961) The influence of blue, red and far red light on geotropism and growth of the Avena coleoptile. Acta Bot. Neerl. 10, 397–450
Blaauw, O.H., Blaauw-Jansen, G. (1970) Third positive (c-type) phototropism in the Avena coleoptile. Acta Bot. Neerl. 19, 764–776
Buder, J. (1920) Neue phototropische Fundamentalversuche. Ber. Dtsch. Bot. Ges. 38, 10–19
Curry, G.M. (1969) Phototropism. In: Physiology of plant growth and development, pp. 253–254, Wilkins, M.B., ed., McGraw-Hill, London
Dennison, D.S. (1979) Phototropism. In: Encyclopedia of plant physiology, N.S., vol. 7: Physiology of movements, pp. 506–566, Haupt, W., Feinleib, M.E., eds. Springer, Berlin Heidelberg New York
Firn, R.D. (1986) Phototropism. In: Photomorphogenesis in plants, pp. 367–389, Kendrick, R.E., Kronenberg, H.M., eds. Martinus Nijhoff, Dordrecht Boston-Lancaster
Galland, P. (1983) Action spectra of photogeotropic equilibrium in Phycomyces wild type and three behavioural mutants. Photochem. Photobiol. 37, 221–228
Hart, J., MacDonald, I.R. (1981) Phototropism and geotropism in hypocotyls of cress (Lepidium sativum L.). Plant Cell Environ. 4, 197–201
Hild, V. (1977) Wirkung von Vorbestrahlung mit Rot- oder Blaulicht auf die geotropische Empfindlichkeit von Maiskoleoptilen. Planta 133, 309–314
Hild, V., Hertel, R. (1972) Initial phases of gravity-induced lateral auxin transport and geotropic curvature in corn cole-optiles. Planta 108, 245–258
Lino, M., Briggs, W.R. (1984) Growth distribution during first positive phototropic curvature of maize coleoptiles. Plant Cell Environ. 7, 97–104
Kunzelmann, P. (1986) Analyse von Photonenflußgradienten in biologischen Geweben — Die Beziehung des Lichtgradienten zum Phototropismus. Doctoral Thesis, University of Freiburg, FRG
Kunzelmann, P., Schäfer, E. (1985) Phytochrome-mediated phototropism in maize mesocotyls. Relation between light and Pfr gradients, light growth response and phototropism. Planta 165, 424–429
Löser, G., Schäfer, E. (1986) Are there several photoreceptors involved in phototropism of Phycomyces blakesleeanus? Kinetic studies of dichromatic irradiation. Photochem. Photobiol. 43, 195–204
Mohr, H., Meyer, U., Hartmann, K. (1964) Die Beeinflussung der Farnsporenkeimung (Osmunda cinnamomea (L.) und O. claytoniana (L.) über das Phytochromsystem und die Photosynthese. Planta 60, 483–496
Pekelharing, C.J. (1909) Onderzoekingen over de perceptie van den zwaartekrachtprikkel door planten. J.van Boekhoven, Utrecht
Pickard, B.G. (1972) Geotropic response patterns of the Avena coleoptile. I. Dependence on angle and duration of stimulation. Can. J. Bot. 51, 1003–1021
Pohl, U., Russo, V.E.A. (1984) Phototropism. In: Membranes and sensory transduction, pp. 231–329, Colombetti, G., Lenci, F., eds. Plenum, New York London
Rawitscher, F. (1932) Der Geotropismus der Pflanzen, p. 251. Gustav Fischer, Jena
Rothert, W. (1894) Über Heliotropismus, pp. 43–45, Kern, J.U., ed. Breslau
Ullrich, C.H. (1976) Kontinuierlich registrierende Messung der Krümmungsbewegung von Maiskoleoptilen: schnelle Effekte von Auxinapplikation, Schwerkraft und Blaulicht, pp. 78–81. Doctoral Thesis, University of Freiburg, FRG
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Nick, P., Schäfer, E. Interaction of gravi- and phototropic stimulation in the response of maize (Zea mays L.) coleoptiles. Planta 173, 213–220 (1988). https://doi.org/10.1007/BF00403013
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DOI: https://doi.org/10.1007/BF00403013