Higher plants use LOV to perceive blue light.

Détails

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Etat: Serval
Version: Author's accepted manuscript
ID Serval
serval:BIB_D9AB07A52F0D
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Titre
Higher plants use LOV to perceive blue light.
Périodique
Current Opinion in Plant Biology
Auteur(s)
Demarsy E., Fankhauser C.
ISSN
1879-0356[electronic], 1369-5266[linking]
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
12
Numéro
1
Pages
69-74
Langue
anglais
Résumé
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.
Mots-clé
Cryptochromes, Flavoproteins/chemistry, Light, Oxygen/metabolism, Plant Proteins/metabolism, Plants/metabolism, Plants/radiation effects, Signal Transduction/radiation effects
Pubmed
Web of science
Open Access
Oui
Création de la notice
18/06/2009 15:31
Dernière modification de la notice
09/05/2019 2:01
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