Higher plants use LOV to perceive blue light.

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Version: Author's accepted manuscript
Serval ID
serval:BIB_D9AB07A52F0D
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
Higher plants use LOV to perceive blue light.
Journal
Current Opinion in Plant Biology
Author(s)
Demarsy E., Fankhauser C.
ISSN
1879-0356[electronic], 1369-5266[linking]
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
12
Number
1
Pages
69-74
Language
english
Abstract
Higher plants use several classes of blue light receptors to modulate a wide variety of physiological responses. Among them, both the phototropins and members of the Zeitlupe (ZTL) family use light oxygen voltage (LOV) photosensory domains. In Arabidopsis, these families comprise phot1, phot2 and ZTL, LOV Kelch Protein 2 (LKP2), and Flavin-binding Kelch F-box1 (FKF1). It has now been convincingly shown that blue-light-induced autophosphorylation of the phot1 kinase domain is an essential step in signal transduction. Recent experiments also shed light on the partially distinct photosensory specificities of phot1 and phot2. Phototropin signaling branches rapidly following photoreceptor activation to mediate distinct responses such as chloroplast movements or phototropism. Light activation of the LOV domain in ZTL family members modulates their capacity to interact with GIGANTEA (GI) and their ubiquitin E3 ligase activity. A complex between GI and FKF1 is required to trigger the degradation of a repressor of CO (CONSTANS) expression and thus modulates flowering time. In contrast, light-regulated complex formation between ZTL and GI appears to limit the capacity of ZTL to degrade its targets, which are part of the circadian oscillator.
Keywords
Cryptochromes, Flavoproteins/chemistry, Light, Oxygen/metabolism, Plant Proteins/metabolism, Plants/metabolism, Plants/radiation effects, Signal Transduction/radiation effects
Pubmed
Web of science
Open Access
Yes
Create date
18/06/2009 14:31
Last modification date
20/08/2019 15:58
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