Titre
Higher plants use LOV to perceive blue light.
Type
synthèse (review)
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Demarsy, E.
Auteure/Auteur
Fankhauser, C.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1879-0356[electronic], 1369-5266[linking]
Statut éditorial
Publié
Date de publication
2009
Volume
12
Numéro
1
Première page
69
Dernière page/numéro d’article
74
Peer-reviewed
Oui
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.
PID Serval
serval:BIB_D9AB07A52F0D
PMID
Open Access
Oui
Date de création
2009-06-18T13:31:11.246Z
Date de création dans IRIS
2025-05-20T22:49:03Z
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Nom
BIB_D9AB07A52F0D.P001.pdf
Version du manuscrit
postprint
Taille
557.78 KB
Format
Adobe PDF
PID Serval
serval:BIB_D9AB07A52F0D.P001
URN
urn:nbn:ch:serval-BIB_D9AB07A52F0D7
Somme de contrôle
(MD5):37676de27f556352b659f5b26ef062d5