Natural variation in GS5 plays an important role in regulating grain size and yield in rice

被引：822

作者：

Li, Yibo ^{[1
,2
]}

Fan, Chuchuan ^{[1
,2
]}

Xing, Yongzhong ^{[1
,2
]}

Jiang, Yunhe ^{[1
,2
]}

Luo, Lijun ^{[1
,2
]}

Sun, Liang ^{[1
,2
]}

Shao, Di ^{[1
,2
]}

Xu, Chunjue ^{[1
,2
]}

Li, Xianghua ^{[1
,2
]}

Xiao, Jinghua ^{[1
,2
]}

He, Yuqing ^{[1
,2
]}

Zhang, Qifa ^{[1
,2
]}

机构：

[1] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China

[2] Huazhong Agr Univ, Natl Ctr Plant Gene Res Wuhan, Wuhan, Peoples R China

来源：

NATURE GENETICS | 2011年 / 43卷 / 12期

基金：

中国国家自然科学基金;

关键词：

PLANT-CELL CYCLE; TOMATO FRUIT SIZE; JAPONICA RICE; GENETIC-BASIS; MAJOR QTL; T-DNA; ENCODES; WEIGHT; HYBRID; WIDTH;

D O I：

10.1038/ng.977

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Increasing crop yield is one of the most important goals of plant science research. Grain size is a major determinant of grain yield in cereals and is a target trait for both domestication and artificial breeding(1). We showed that the quantitative trait locus (QTL) GS5 in rice controls grain size by regulating grain width, filling and weight. GS5 encodes a putative serine carboxypeptidase and functions as a positive regulator of grain size, such that higher expression of GS5 is correlated with larger grain size. Sequencing of the promoter region in 51 rice accessions from a wide geographic range identified three haplotypes that seem to be associated with grain width. The results suggest that natural variation in GS5 contributes to grain size diversity in rice and may be useful in improving yield in rice and, potentially, other crops(2).

引用

页码：1266 / +

页数：5

共 36 条

[1] Cytokinin oxidase regulates rice grain production [J].