文献类型： 外文期刊
作者： Pan, Yinghua 1 ; Chen, Lei 1 ; Zhao, Yan 2 ; Guo, Haifeng 3 ; Li, Jingcheng 1 ; Rashid, Muhammad Abdul Rehman 4 ; Lu, Chunju 1 ; Zhou, Weiyong 1 ; Yang, Xingka 5 ; Liang, Yuntao 1 ; Wu, Hao 6 ; Qing, Dongjing 6 ; Gao, Lijun 6 ; Dai, Gaoxing 1 ; Li, Danting 1 ; Deng, Guofu 6 ;
作者机构： 1.Guangxi Acad Agr Sci, Rice Res Inst, Guangxi Key Lab Rice Genet & Breeding, Nanning, Peoples R China
2.Shandong Agr Univ, Coll Agron, Shandong Key Lab Crop Biol, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China
3.China Agr Univ, Beijing Key Lab Crop Genet Improvement, State Key Lab Agrobiotechnol, Coll Agron & Biotechnol, Beijing, Peoples R China
4.Govt Coll Univ Faisalabad, Dept Bioinformat & Biotechnol, Faisalabad, Pakistan
5.Guangxi Lvhai Seed Co Ltd, Nanning, Peoples R China
6.Guangxi Acad Agr Sci, Guangxi Crop Genet Improvement & Biotechnol Lab, Nanning, Peoples R China
关键词： OsMKK3; grain size; rice domestication; haplotype; artificial selection; genetic interaction
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2021 年 12 卷
页码：
收录情况： SCI
摘要： Rice (Oryza sativa L.) is an important staple food crop for more than half of the world's population. Enhancing the grain quality and yield of rice to meet growing demand remains a major challenge. Here, we show that OsMKK3 encode a MAP kinase kinase that controls grain size and chalkiness by affecting cell proliferation in spikelet hulls. We showed that OsSPL16, GS5, and GIF1 have a substantial effect on the OsMKK3-regulated grain size pathway. OsMKK3 has experienced strong directional selection in indica and japonica. Wild rice accessions contained four OsMKK3 haplotypes, suggesting that the OsMKK3 haplotypes present in cultivated rice likely originated from different wild rice accessions during rice domestication. OsMKK3-Hap1, gs3, and gw8 were polymerized to enhance the grain length. Polymerization of beneficial alleles, such as OsMKK3-Hap1, gs3, gw8, fgr, alk, chalk5, and wx, also improved the quality of hybrid rice. Overall, the results indicated that beneficial OsMKK3 alleles could be used for genomic-assisted breeding for rice cultivar improvement and be polymerized with other beneficial alleles.
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