SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice

被引：183

作者：

Liao, Zhigang ^{[1
,2
,3
]}

Yu, Hong ^{[1
,2
]}

Duan, Jingbo ^{[1
,2
]}

Yuan, Kun ^{[1
,2
,3
]}

Yu, Chaoji ^{[1
,2
,3
]}

Meng, Xiangbing ^{[1
,2
]}

Kou, Liquan ^{[1
,2
]}

Chen, Mingjiang ^{[1
,2
]}

Jing, Yanhui ^{[1
,2
]}

Liu, Guifu ^{[1
,2
]}

Smith, Steven M. ^{[1
,2
,4
]}

Li, Jiayang ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Innovat Acad Seed Design, State Key Lab Plant Genom, Beijing 100101, Peoples R China

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

[3] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

[4] Univ Tasmania, Sch Nat Sci, Hobart, Tas 7001, Australia

来源：

NATURE COMMUNICATIONS | 2019年 / 10卷 / 1期

基金：

中国国家自然科学基金;

关键词：

AXILLARY MERISTEM FORMATION; F-BOX SUBUNIT; BUD OUTGROWTH; GIBBERELLIN RESPONSE; GRAS FAMILY; ENCODES; PROTEIN; GENE; ORTHOLOG; MUTANT;

D O I：

10.1038/s41467-019-10667-2

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：

The breeding of cereals with altered gibberellin (GA) signaling propelled the 'Green Revolution' by generating semidwarf plants with increased tiller number. The mechanism by which GAs promote shoot height has been studied extensively, but it is not known what causes the inverse relationship between plant height and tiller number. Here we show that rice tiller number regulator MONOCULM 1 (MOC1) is protected from degradation by binding to the DELLA protein SLENDER RICE 1 (SLR1). GAs trigger the degradation of SLR1, leading to stem elongation and also to the degradation of MOC1, and hence a decrease in tiller number. This discovery provides a molecular explanation for the coordinated control of plant height and tiller number in rice by GAs, SLR1 and MOC1.

引用

页数：9

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