Phytochrome interacting factors 4 and 5 control seedling growth in changing light conditions by directly controlling auxin signaling.
Details
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State: Public
Version: Author's accepted manuscript
State: Public
Version: Author's accepted manuscript
Serval ID
serval:BIB_0DD28C80F89C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Phytochrome interacting factors 4 and 5 control seedling growth in changing light conditions by directly controlling auxin signaling.
Journal
Plant Journal
ISSN
1365-313X (Electronic)
ISSN-L
0960-7412
Publication state
Published
Issued date
2012
Volume
71
Number
5
Pages
699-711
Language
english
Abstract
Plant growth is strongly influenced by the presence of neighbors that compete for light resources. In response to vegetational shading shade-intolerant plants such as Arabidopsis display a suite of developmental responses known as the shade-avoidance syndrome (SAS). The phytochrome B (phyB) photoreceptor is the major light sensor to mediate this adaptive response. Control of the SAS occurs in part with phyB, which controls protein abundance of phytochrome-interacting factors 4 and 5 (PIF4 and PIF5) directly. The shade-avoidance response also requires rapid biosynthesis of auxin and its transport to promote elongation growth. The identification of genome-wide PIF5-binding sites during shade avoidance revealed that this bHLH transcription factor regulates the expression of a subset of previously identified SAS genes. Moreover our study suggests that PIF4 and PIF5 regulate elongation growth by controlling directly the expression of genes that code for auxin biosynthesis and auxin signaling components.
Keywords
shade avoidance, phytochrome, phytochrome-interacting factor, auxin, ChIP sequencing, Arabidopsis thaliana
Pubmed
Web of science
Open Access
Yes
Create date
11/06/2012 15:10
Last modification date
20/08/2019 13:34