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题名

RGB1 Regulates Grain Development and Starch Accumulation Through Its Effect on OsYUC11-Mediated Auxin Biosynthesis in Rice Endosperm Cells

作者
通讯作者Liang,Jiansheng
共同第一作者Zhang,Dongping; Zhang,Minyan
发表日期
2021-03-31
DOI
发表期刊
ISSN
1664-462X
EISSN
1664-462X
卷号12
摘要

RGB1, a subunit of heterotrimeric G protein, plays important roles in regulating grain size and weight of rice. However, the molecular mechanisms underlying controlling grain filling process by G protein are still largely unclear. In the present study, we show that RGB1 controls not only the grain size but also the grain filling process. Knock-down of RGB1 significantly delayed grain development and reduced starch accumulation and grain weight, which was closely related to the delayed and the lower expression of genes encoding sucrose metabolism and starch biosynthesis related enzymes during grain filling stage. Suppression of RGB1 expression also resulted in the lower auxin content in grains, which was correlated with the lower expression of OsNF-YB1 and OsYUC11 during grain filling stage. Further biochemical evidence showed that OsYUC11 expression was under control of OsNF-YB1 by its interaction with promoter of OsYUC11. Taken together, we propose that RGB1 controls rice grain development and grain filling process by changing auxin homeostasis in endosperm cells. OsNF-YB1, which acts as a key downstream effector of RGB1, interacts directly with the promoter of OsYUC11 and stimulates the OsYUC11 expression, thereby regulating auxin biosynthesis and starch accumulation and grain size.

关键词
相关链接[Scopus记录]
收录类别
语种
英语
学校署名
第一 ; 通讯
资助项目
Peacock Science and Technology Innovation Project of Shenzhen[KQJSCX20170328153821275] ; National Science Foundation of China[31601230] ; Key University Science Research Project of Jiangsu Province[17KJA210002]
WOS研究方向
Plant Sciences
WOS类目
Plant Sciences
WOS记录号
WOS:000639976200001
出版者
Scopus记录号
2-s2.0-85104199646
来源库
Scopus
引用统计
被引频次[WOS]:24
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/227762
专题生命科学学院_生物系
生命科学学院
作者单位
1.Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes,Department of Biology,Southern University of Science and Technology,Shenzhen,China
2.Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops,Key Laboratory of Plant Functional Genomics of the Ministry of Education,Yangzhou University,Yangzhou,China
第一作者单位生物系;  生命科学学院
通讯作者单位生物系;  生命科学学院
第一作者的第一单位生物系;  生命科学学院
推荐引用方式
GB/T 7714
Zhang,Dongping,Zhang,Minyan,Liang,Jiansheng. RGB1 Regulates Grain Development and Starch Accumulation Through Its Effect on OsYUC11-Mediated Auxin Biosynthesis in Rice Endosperm Cells[J]. Frontiers in Plant Science,2021,12.
APA
Zhang,Dongping,Zhang,Minyan,&Liang,Jiansheng.(2021).RGB1 Regulates Grain Development and Starch Accumulation Through Its Effect on OsYUC11-Mediated Auxin Biosynthesis in Rice Endosperm Cells.Frontiers in Plant Science,12.
MLA
Zhang,Dongping,et al."RGB1 Regulates Grain Development and Starch Accumulation Through Its Effect on OsYUC11-Mediated Auxin Biosynthesis in Rice Endosperm Cells".Frontiers in Plant Science 12(2021).
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