Regulation of OsSPL14 by OsmiR156 defines ideal plant architecture in rice

被引：1264

作者：

Jiao, Yongqing ^{[1
,2
]}

Wang, Yonghong ^{[1
,2
]}

Xue, Dawei ^{[3
]}

Wang, Jing ^{[1
,2
]}

Yan, Meixian ^{[3
]}

Liu, Guifu ^{[1
,2
]}

Dong, Guojun ^{[3
]}

Zeng, Dali ^{[3
]}

Lu, Zefu ^{[1
,2
]}

Zhu, Xudong ^{[3
]}

Qian, Qian ^{[3
]}

Li, Jiayang ^{[1
,2
]}

机构：

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

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

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

来源：

NATURE GENETICS | 2010年 / 42卷 / 06期

基金：

中国国家自然科学基金;

关键词：

SBP-BOX GENE; TRANSLATIONAL INHIBITION; TRANSCRIPTION FACTORS; ARABIDOPSIS; MIR156; SPL8;

D O I：

10.1038/ng.591

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Increasing crop yield is a major challenge for modern agriculture. The development of new plant types, which is known as ideal plant architecture (IPA), has been proposed as a means to enhance rice yield potential over that of existing high-yield varieties(1,2). Here, we report the cloning and characterization of a semidominant quantitative trait locus, IPA1 (Ideal Plant Architecture 1), which profoundly changes rice plant architecture and substantially enhances rice grain yield. The IPA1 quantitative trait locus encodes OsSPL14 (SOUAMOSA PROMOTER BINDING PROTEIN-LIKE 14) and is regulated by microRNA (miRNA) OsmiR156 in vivo. We demonstrate that a point mutation in OsSPL14 perturbs OsmiR156-directed regulation of OsSPL14, generating an 'ideal' rice plant with a reduced tiller number, increased lodging resistance and enhanced grain yield. Our study suggests that OsSPL14 may help improve rice grain yield by facilitating the breeding of new elite rice varieties.

引用

页码：541 / U36

页数：5

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