The shade avoidance syndrome: multiple responses mediated by multiple phytochromes
نویسندگان
چکیده
منابع مشابه
BOTANICAL BRIEFING Phytochromes and Shade-avoidance Responses in Plants
Background and Aims The ability to detect and respond to the impending threat of shade can confer significant selective advantage to plants growing in natural communities. This Botanical Briefing highlights (a) the regulation of shade-avoidance responses by endogenous and exogenous factors and (b) current understanding of the molecular components involved in red to far-red ratio signal transduc...
متن کاملThe shade-avoidance syndrome: multiple signals and ecological consequences.
Plants use photoreceptor proteins to detect the proximity of other plants and to activate adaptive responses. Of these photoreceptors, phytochrome B (phyB), which is sensitive to changes in the red (R) to far-red (FR) ratio of sunlight, is the one that has been studied in greatest detail. The molecular connections between the proximity signal (low R:FR) and a model physiological response (incre...
متن کاملThe adaptive evolution of plasticity: phytochrome-mediated shade avoidance responses.
Many plants display a characteristic suite of developmental "shade avoidance" responses, such as stem elongation and accelerated reproduction, to the low ratio of red to far-red wavelengths (R:FR) reflected or transmitted from green vegetation. This R:FR cue of crowding and vegetation shade is perceived by the phytochrome family of photoreceptors. Phytochrome-mediated responses provide an ideal...
متن کاملThe Adaptive Evolution of Plasticity: Phytochrome-Mediated Shade Avoidance Responses1
SYNOPSIS. Many plants display a characteristic suite of developmental ‘‘shade avoidance’’ responses, such as stem elongation and accelerated reproduction, to the low ratio of red to far-red wavelengths (R:FR) reflected or transmitted from green vegetation. This R:FR cue of crowding and vegetation shade is perceived by the phytochrome family of photoreceptors. Phytochrome-mediated responses prov...
متن کاملThe shade avoidance syndrome: a non-Markovian stochastic growth model.
Plants at high population density compete for light, showing a series of physiological responses known as the shade avoidance syndrome. These responses are controlled by the synthesis of the hormone auxin, which is regulated by two signals, an environmental one and an internal one. Considering that the auxin signal induces plant growth after a time lag, this work shows that plant growth can be ...
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ژورنال
عنوان ژورنال: Plant, Cell and Environment
سال: 1997
ISSN: 0140-7791,1365-3040
DOI: 10.1046/j.1365-3040.1997.d01-104.x