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Grain Shape Genes: Shaping the Future of Rice Breeding

文献类型： 外文期刊

作者： Lu, Xuedan 1 ; Li, Fan 1 ; Xiao, Yunhua 1 ; Wang, Feng 1 ; Zhang, Guilian 1 ; Deng, Huabing 1 ; Tang, Wenbang 3 ;

作者机构： 1.Hunan Agr Univ, Coll Agron, Changsha 410128, Peoples R China

2.Hunan Prov Key Lab Rice & Rapeseed Breeding Dis Re, Changsha 410128, Peoples R China

3.State Key Lab Hybrid Rice, Changsha 410125, Peoples R China

4.Hunan Acad Agr Sci, Hunan Hybrid Rice Res Ctr, Changsha 410125, Peoples R China

关键词： grain shape; grain quality; yield; mechanization of seed sorting; hybrid rice; molecular; function; regulatory pathway

期刊名称：RICE SCIENCE （ 影响因子：4.8； 五年影响因子：5.5 ）

ISSN： 1672-6308

年卷期： 2023 年 30 卷 5 期

页码：

收录情况： SCI

摘要： The main goals of rice breeding nowadays include increasing yield, improving grain quality, and promoting complete mechanized production to save labor costs. Rice grain shape, specified by three dimensions, including grain length, width and thickness, has a more precise meaning than grain size, contributing to grain appearance quality as well as grain weight and thus yield. Furthermore, the divergence of grain shape characters could be utilized in mechanical seed sorting in hybrid rice breeding systems, which has been succeeded in utilizing heterosis to achieve substantial increase in rice yield in the past decades. Several signaling pathways that regulate rice grain shape have been elucidated, including G protein signaling, ubiquitination-related pathway, mitogen-activated protein kinase signaling, phytohormone biosynthesis and signaling, microRNA process, and some other transcriptional regulatory pathways and regulators. This review summarized the recent progress on molecular mechanisms underlying rice grain shape determination and the potential of major genes in future breeding applications.

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