Shade avoidance.

The Arabidopsis Book
Jorge J Casal

Abstract

The presence of neighboring vegetation modifies the light environment experienced by plants, generating signals that are perceived by phytochromes and cryptochromes. These signals cause large changes in plant body form and function, including enhanced growth of the hypocotyl and petioles, a more erect position of the leaves and early flowering in Arabidopsis thaliana. Collectively, these so-called shade-avoidance responses tend to reduce the degree of current or future shade by neighbors. Shade light signals increase the abundance of PHYTOCHROME INTERACTING FACTOR 4 (PIF4) and PIF5 proteins, promote the synthesis and redirection of auxin, favor the degradation of DELLA proteins and increase the expression of auxin, gibberellins and brassinosteroid-promoted genes, among other events downstream the photoreceptors. Selectively disrupting these events by genetic or pharmacological approaches affects shade-avoidance responses with an intensity that depends on the developmental context and the environment. Shade-avoidance responses provide a model to investigate the signaling networks used by plants to take advantage of the cues provided by the environment to adjust to the challenges imposed by the environment itself.

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Citations

Jan 1, 2014·Proceedings of the National Academy of Sciences of the United States of America·Kathryn R FixenCaroline S Harwood
Feb 5, 2013·Annual Review of Plant Biology·Jorge J Casal
Jul 27, 2014·Journal of Chemical Ecology·Javier E Moreno, Carlos L Ballaré
Jan 30, 2014·Annual Review of Plant Biology·Carlos L Ballaré
Dec 24, 2014·Biotechnology Advances·Mayank Anand GururaniPill-Soon Song
Oct 23, 2012·Trends in Plant Science·Charlotte M M GommersRonald Pierik
Mar 15, 2016·Frontiers in Plant Science·Irma Roig-Villanova, Jaime F Martínez-García
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Sep 10, 2013·Physiologia Plantarum·Mieke de WitChristian Fankhauser
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Apr 3, 2014·Plant, Cell & Environment·Ronald PierikMarcel Dicke
Jun 2, 2016·Nature Plants·Zuyu ZhengJoanne Chory
Apr 22, 2016·Planta·Chiara MenonAndreas Hiltbrunner
Feb 26, 2016·Annual Review of Plant Biology·Mieke de WitChristian Fankhauser
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May 14, 2017·Photochemistry and Photobiology·Romina SellaroJorge J Casal
Jan 15, 2013·Journal of Experimental Botany·Honggui WangBin Liu
Dec 11, 2013·Journal of Experimental Botany·Ronald Pierik, Mieke de Wit

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Methods Mentioned

BETA
transgenic

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