数字农科院2.0

Decreased grain size1, a C3HC4-type RING protein, influences grain size in rice (Oryza sativa L.)

文献类型： 外文期刊

作者： Xingjie Zhu;Shengzhong Zhang;Yaping Chen;Changlin Mou;Yunshuai Huang;Xi Liu;Jingli Ji;Jiangfeng Yu;Qixian Hao;Chunyan Yang;Mengying Cai;Thanhliem Nguyen;Weihan Song;Ping Wang;Hui Dong;Shijia Liu;Ling Jiang;Jianmin Wan

作者机构：

关键词： DGS1; Grain size; Oryza sativa; OsBZR1

期刊名称： Plant. Mol. Biol.

ISSN： 0167-4412

年卷期： 2021 年 105 卷 2021/4/5 期

页码：

收录情况： JCR（2021版）

摘要： Key message: We reported that DGS1 plays a positive role in regulating grain size in rice andwas regulated by OsBZR1. Abstract: Grain size is an important agronomic trait that contributes to grain yield. However, the underlying molecular mechanisms that determine final grain size are still largely unknown. We isolated a rice mutant showing reduced grain size in a 60Co-irradiated variety Nanjing 35 population. We named the mutant decreased grain size1 (dgs1). Map-based cloning and subsequent transgenic CRISPR and complementation assays indicated that a mutation had occurred in LOC_Os03g49900 and that the DGS1 allele regulated grain size. DGS1 encodes a protein with a 7-transmembrane domain and C3HC4 type RING domain. It was widely expressed, especially in young tissues. DGS1 is a membrane-located protein. OsBZR1 (BRASSINAZOLE-RESISTANT1), a core transcription activator of BR signaling, also plays a positive role in grain size. We provided preliminary evidence that OsBZR1 can bind to the DGS1 promoter to activate expression of DGS1. © 2021, Springer Nature B.V.

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