Shade avoidance in the context of climate change.

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State: Public
Version: author
License: CC BY 4.0
Serval ID
serval:BIB_2DBCEA48BEE3
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Shade avoidance in the context of climate change.
Journal
Plant physiology
Author(s)
Casal J.J., Fankhauser C.
ISSN
1532-2548 (Electronic)
ISSN-L
0032-0889
Publication state
Published
Issued date
17/03/2023
Peer-reviewed
Oui
Volume
191
Number
3
Pages
1475-1491
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
When exposed to changes in the light environment caused by neighboring vegetation, shade-avoiding plants modify their growth and/or developmental patterns to access more sunlight. In Arabidopsis (Arabidopsis thaliana), neighbor cues reduce the activity of the photosensory receptors phytochrome B (phyB) and cryptochrome 1, releasing photoreceptor repression imposed on PHYTOCHROME INTERACTING FACTORs (PIFs) and leading to transcriptional reprogramming. The phyB-PIF hub is at the core of all shade-avoidance responses, whilst other photosensory receptors and transcription factors contribute in a context-specific manner. CONSTITUTIVELY PHOTOMORPHOGENIC1 is a master regulator of this hub, indirectly stabilizing PIFs and targeting negative regulators of shade avoidance for degradation. Warm temperatures reduce the activity of phyB, which operates as a temperature sensor and further increases the activities of PIF4 and PIF7 by independent temperature sensing mechanisms. The signaling network controlling shade avoidance is not buffered against climate change; rather, it integrates information about shade, temperature, salinity, drought, and likely flooding. We, therefore, predict that climate change will exacerbate shade-induced growth responses in some regions of the planet while limiting the growth potential in others.
Pubmed
Web of science
Open Access
Yes
Create date
17/01/2023 8:45
Last modification date
09/09/2023 5:51
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