ORE1 balances leaf senescence against maintenance by antagonizing G2-like-mediated transcription

被引：145

作者：

Rauf, Mamoona ^{[1
,2
]}

Arif, Muhammad ^{[1
,2
]}

Dortay, Hakan ^{[1
]}

Matallana-Ramirez, Lilian P. ^{[1
]}

Waters, Mark T. ^{[3
]}

Nam, Hong Gil ^{[4
]}

Lim, Pyung-Ok ^{[4
]}

Mueller-Roeber, Bernd ^{[1
,2
]}

Balazadeh, Salma ^{[1
,2
]}

机构：

[1] Univ Potsdam, Inst Biochem & Biol, D-14476 Potsdam, Germany

[2] Max Planck Inst Mol Plant Physiol, Plant Signalling Grp, D-14476 Potsdam, Germany

[3] Univ Western Australia, ARC Ctr Excellence Plant Energy Biol, Crawley, WA 6009, Australia

[4] DGIST, Dept New Biol, Taegu 711873, South Korea

来源：

EMBO REPORTS | 2013年 / 14卷 / 04期

关键词：

transcription factor; senescence; chloroplast; protein-protein interaction; ARABIDOPSIS-THALIANA; GENE-EXPRESSION; PROTEIN INTERACTIONS; PATHWAY;

D O I：

10.1038/embor.2013.24

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Leaf senescence is a key physiological process in all plants. Its onset is tightly controlled by transcription factors, of which NAC factor ORE1 (ANAC092) is crucial in Arabidopsis thaliana. Enhanced expression of ORE1 triggers early senescence by controlling a downstream gene network that includes various senescence-associated genes. Here, we report that unexpectedly ORE1 interacts with the G2-like transcription factors GLK1 and GLK2, which are important for chloroplast development and maintenance, and thereby for leaf maintenance. ORE1 antagonizes GLK transcriptional activity, shifting the balance from chloroplast maintenance towards deterioration. Our finding identifies a new mechanism important for the control of senescence by ORE1.

引用

页码：382 / 388

页数：7