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Photocontrol of spore germination and elementary processes of development in fern gametophytes

Published online by Cambridge University Press:  05 December 2011

Masaki Furuya
Masaki Furuya
Affiliation:
Department of Botany, Faculty of Science, University of Tokyo, Hongo, Tokyo, Japan 113
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Synopsis

Spore germination and the subsequent processes of development in fern gametophytes such as the induction, swelling and phototropism and protonemal growth and the progression of component phases in the cell cycle are antagonistically regulated by phytochrome and chemically unknown, blue and near-ultraviolet light-absorbing pigment(s). The physiological capacity to adjust these developmental processes to the seasonal and other environmental changes by wavelength, timing and direction of irradiations with near-ultraviolet, visible and far-red lights and also the electric vector of polarised light, is crucial for fern development. The diversity of Pfr requirement and of recovery time from blue light-induced inhibition in a spore population results in variations in the timing of spore germination, so that wild fern species may find a chance for survival under natural conditions. Photocontrolled processes are differentiated temporally and spatially in the course of fern morphogenesis, especially in the haploid generation. Using this material, the premitotic positioning of the nucleus and protein synthesis were studied.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 86: The Biology of Pteridophytes , 1985 , pp. 13 - 19
Copyright
Copyright © Royal Society of Edinburgh 1985

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