您好，欢迎访问江西省农业科学院 机构知识库！

Sorghum qTGW1a encodes a G-protein subunit and acts as a negative regulator of grain size

文献类型： 外文期刊

作者： Zou, Guihua 1 ; Zhai, Guowei 1 ; Yan, Song 2 ; Li, Sujuan 1 ; Zhou, Lengbo 3 ; Ding, Yanqing 3 ; Liu, Heqin 1 ; Zhang, Zh 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Peoples R China

2.Jiangxi Acad Agr Sci, Rice Res Inst, Rice Natl Engn Lab, Nanchang 330200, Jiangxi, Peoples R China

3.Guizhou Acad Agr Sci, Inst Upland Food Crops, Guiyang 550009, Peoples R China

4.Liaoning Acad Agr Sci, Chinese Natl Sorghum Improvement Ctr, Shenyang 110161, Peoples R China

5.USDA ARS, Plant Stress & Germplasm Dev Unit, Cropping Syst Res Lab, Lubbock, TX 79415 USA

关键词： Cloning; fine mapping; grain size; overexpression; qTGW1a; sorghum

期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：6.992； 五年影响因子：7.86 ）

ISSN： 0022-0957

年卷期： 2020 年 71 卷 18 期

页码：

收录情况： SCI

摘要： Grain size is a major determinant of grain yield in sorghum and other cereals. Over 100 quantitative trait loci (QTLs) of grain size have been identified in sorghum. However, no gene underlying any grain size QTL has been cloned. Here, we describe the fine mapping and cloning of one grain size QTL. From an F-8 recombinant inbred line population derived from a cross between inbred lines 654 and LTR108, we identified 44 grain size QTLs. One QTL, qTGW1a, was detected consistently on the long arm of chromosome 1 in the span of 4 years. Using the extreme recombinants from an F-2:3 fine-mapping population, qTGW1a was delimited within a similar to 33 kb region containing three predicted genes. One of them, SORBI_3001G341700, predicted to encode a G-protein gamma subunit and homologous to GS3 in rice, is likely to be the causative gene for qTGW1a. qTGW1a appears to act as a negative regulator of grain size in sorghum. The functional allele of the putatively causative gene of qTGW1a from inbred line 654 decreased grain size, plant height, and grain yield in transgenic rice. Identification of the gene underlying qTGW1a advances our understanding of the regulatory mechanisms of grain size in sorghum and provides a target to manipulate grain size through genome editing.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江西省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台