<i>Arabidopsis</i> RUP2 represses UVR8-mediated flowering in noninductive photoperiods.

Details

Ressource 1Download: Genes Dev.-2018-Arongaus-1332-43.pdf (2995.27 [Ko])
State: Public
Version: Final published version
Serval ID
serval:BIB_00F3008B007B
Type
Article: article from journal or magazin.
Collection
Publications
Title
<i>Arabidopsis</i> RUP2 represses UVR8-mediated flowering in noninductive photoperiods.
Journal
Genes & development
Author(s)
Arongaus A.B., Chen S., Pireyre M., Glöckner N., Galvão V.C., Albert A., Winkler J.B., Fankhauser C., Harter K., Ulm R.
ISSN
1549-5477 (Electronic)
ISSN-L
0890-9369
Publication state
Published
Issued date
01/10/2018
Peer-reviewed
Oui
Volume
32
Number
19-20
Pages
1332-1343
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Plants have evolved complex photoreceptor-controlled mechanisms to sense and respond to seasonal changes in day length. This ability allows plants to optimally time the transition from vegetative growth to flowering. UV-B is an important part intrinsic to sunlight; however, whether and how it affects photoperiodic flowering has remained elusive. Here, we report that, in the presence of UV-B, genetic mutation of <i>REPRESSOR OF UV-B PHOTOMORPHOGENESIS 2</i> ( <i>RUP2</i> ) renders the facultative long day plant <i>Arabidopsis thaliana</i> a day-neutral plant and that this phenotype is dependent on the UV RESISTANCE LOCUS 8 (UVR8) UV-B photoreceptor. We provide evidence that the floral repression activity of RUP2 involves direct interaction with CONSTANS, repression of this key activator of flowering, and suppression of <i>FLOWERING LOCUS T</i> transcription. RUP2 therefore functions as an essential repressor of UVR8-mediated induction of flowering under noninductive short day conditions and thus provides a crucial mechanism of photoperiodic flowering control.
Keywords
Arabidopsis/genetics, Arabidopsis/growth & development, Arabidopsis/metabolism, Arabidopsis Proteins/genetics, Arabidopsis Proteins/metabolism, Arabidopsis Proteins/physiology, Chromosomal Proteins, Non-Histone/metabolism, DNA-Binding Proteins/metabolism, Flowers/growth & development, Photoperiod, Promoter Regions, Genetic, Transcription Factors/metabolism, Ultraviolet Rays, Arabidopsis, UV-B photoreceptor, UVR8, flowering, photoperiodism, plant–environment interaction, sun simulator
Pubmed
Web of science
Open Access
Yes
Create date
29/10/2018 10:21
Last modification date
20/08/2019 13:23
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