DWARF 53 acts as a repressor of strigolactone signalling in rice

被引：679

作者：

Jiang, Liang ^{[1
,2
]}

Liu, Xue ^{[1
,2
]}

Xiong, Guosheng ^{[1
,2
]}

Liu, Huihui ^{[1
,2
]}

Chen, Fulu ^{[1
,2
]}

Wang, Lei ^{[1
,2
]}

Meng, Xiangbing ^{[1
,2
]}

Liu, Guifu ^{[1
,2
]}

Yu, Hong ^{[1
,2
]}

Yuan, Yundong ^{[1
,2
]}

Yi, Wei ^{[3
]}

Zhao, Lihua ^{[3
]}

Ma, Honglei ^{[3
]}

He, Yuanzheng ^{[4
]}

Wu, Zhongshan ^{[4
]}

Melcher, Karsten ^{[4
]}

Qian, Qian ^{[5
]}

Xu, H. Eric ^{[3
,4
]}

Wang, Yonghong ^{[1
,2
]}

Li, Jiayang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Genom, Beijing 100101, Peoples R China

[2] Chinese Acad Sci, Inst Genet & Dev Biol, Natl Ctr Plant Gene Res Beijing, Beijing 100101, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Mat Med, CAS Key Lab Receptor Res, Ctr Struct & Funct Drug Targets,VARI SIMM Ctr, Shanghai 201203, Peoples R China

[4] Van Andel Res Inst, Lab Struct Sci, Grand Rapids, MI 49503 USA

[5] Chinese Acad Agr Sci, China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China

来源：

NATURE | 2013年 / 504卷 / 7480期

基金：

中国国家自然科学基金;

关键词：

ORYZA-SATIVA-L; CO-REPRESSOR; ARABIDOPSIS; TOPLESS; OUTGROWTH; KARRIKIN; ORTHOLOG; GENES; MAX1; LEAF;

D O I：

10.1038/nature12870

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Strigolactones (SLs) are a group of newly identified plant hormones that control plant shoot branching. SL signalling requires the hormone-dependent interaction of DWARF14 (D14), a probable candidate SL receptor, with DWARF3 (D3), an F-box component of the Skp-Cullin-F-box (SCF) E3 ubiquitin ligase complex. Here we report the characterization of a dominant SL-insensitive rice (Oryza sativa) mutant dwarf 53 (d53) and the cloning of D53, which encodes a substrate of the SCFD3 ubiquitination complex and functions as a repressor of SL signalling. Treatments with GR24, a synthetic SL analogue, cause D53 degradation via the proteasome in a manner that requires D14 and the SCFD3 ubiquitin ligase, whereas the dominant form of D53 is resistant to SL-mediated degradation. Moreover, D53 can interact with transcriptional co-repressors known as TOPLESS-RELATED PROTEINS. Our results suggest a model of SL signalling that involves SL-dependent degradation of the D53 repressor mediated by the D14-D3 complex.

引用

页码：401 / +

页数：17

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