OsDA1 positively regulates grain width in rice

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外文摘要：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.

外文关键词：

RiceOsda1Grain sizeGrain shapeGrain length/width ratioTCP

作者：

Cong Li、Jun Liu、Liya Zhang、Tao Li、Hongyu Li、Bin Liu、Tao Zhao

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作者单位：

Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China

Institute of Nanfan &Seed Industry,Guangdong Academy of Sciences,Guangzhou 510316,Guangdong,China

基金：

National Transgenic Science and Technology ProgramNational Natural Science Foundation of ChinaAgricultural Science and Technology Innovation Program of CAAS

项目编号：

2016ZX08010-002157101834

出版年：

2024

DOI：

10.1016/j.cj.2023.10.012

作物学报(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.12(1)

参考文献量36