A repressor complex governs the integration of flowering signals in Arabidopsis

被引：480

作者：

Li, Dan ^{[1
]}

Liu, Chang ^{[1
]}

Shen, Lisha ^{[1
]}

Wu, Yang ^{[1
]}

Chen, Hongyan ^{[1
]}

Robertson, Masurni ^{[2
]}

Helliwell, Chris A. ^{[2
]}

Ito, Toshiro ^{[1
]}

Meyerowitz, Elliot ^{[3
]}

Yu, Hao ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Biol Sci, Singapore 117543, Singapore

[2] CSIRO Plant Ind, Canberra, ACT 2601, Australia

[3] CALTECH, Div Biol 156 29, Pasadena, CA 91125 USA

来源：

DEVELOPMENTAL CELL | 2008年 / 15卷 / 01期

关键词：

D O I：

10.1016/j.devcel.2008.05.002

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Multiple genetic pathways act in response to developmental cues and environmental signals to promote the floral transition, by regulating several floral pathway integrators. These include FLOWERING LOCUS T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1). We show that the flowering repressor SHORT VEGETATIVE PHASE (SVP) is controlled by the autonomous, thermo-sensory, and gibberellin pathways, and directly represses SOC1 transcription in the shoot apex and leaf. Moreover, FT expression in the leaf is also modulated by SVP. SVP protein associates with the promoter regions of SOC1 and FT, where another potent repressor FLOWERING LOCUS C (FLC) binds. SVP consistently interacts with FLC in vivo during vegetative growth and their function is mutually dependent. Our findings suggest that SVP is another central regulator of the flowering regulatory network, and that the interaction between SVP and FLC mediated by various flowering genetic pathways governs the integration of flowering signals.

引用

页码：110 / 120

页数：11

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