数字农科院2.0

OsDA1 positively regulates grain width in rice

文献类型： 外文期刊

作者： Li, Cong;Liu, Jun;Zhang, Liya;Li, Tao;Li, Hongyu;Liu, Bin;Zhao, Tao

作者机构：

关键词： Rice;Osda1;Grain size;Grain shape;Grain length/width ratio;TCP

期刊名称： CROP JOURNAL

ISSN： 2095-5421

年卷期： 2024 年 12 卷 1 期

页码：

收录情况： SCIE（2024版） ; ; CSCD（2023-2024年度） ; ; 科技核心（2024版） ; ; 农林核心（2020版）

摘要： The size and shape of rice grains influence their yield and commercial value. We investigated the role of OsDA1, a rice homolog of the Arabidopsis DA1 gene, in regulating grain size and shape. OsDA1 was highly expressed in young spikelets and glumes. Its overexpression led to enlarged seeds with increased width and decreased length/width ratio (LWR) and knocking out OsDA1 reduced grain width and increased grain length and LWR. A R310K point mutation in the DA1-like domain is a potential target for breeding for increased grain width and length. OsDA1 interacted with TCP gene-family proteins to regulate grain size and shape. Our findings deepen our understanding of the molecular mechanisms underlying grain size regulation and provide useful information for improving grain yield. (c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NCND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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