Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice
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 affect...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:fab178e376154ea4839ffe30f8169d352021-12-01T01:16:27ZNatural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice1664-462X10.3389/fpls.2021.784037https://doaj.org/article/fab178e376154ea4839ffe30f8169d352021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpls.2021.784037/fullhttps://doaj.org/toc/1664-462XRice (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.Yinghua PanLei ChenYan ZhaoHaifeng GuoJingcheng LiMuhammad Abdul Rehman RashidChunju LuWeiyong ZhouXingka YangYuntao LiangHao WuDongjing QingLijun GaoGaoxing DaiDanting LiGuofu DengFrontiers Media S.A.articleOsMKK3grain sizerice domesticationhaplotypeartificial selectiongenetic interactionPlant cultureSB1-1110ENFrontiers in Plant Science, Vol 12 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
OsMKK3 grain size rice domestication haplotype artificial selection genetic interaction Plant culture SB1-1110 |
| spellingShingle |
OsMKK3 grain size rice domestication haplotype artificial selection genetic interaction Plant culture SB1-1110 Yinghua Pan Lei Chen Yan Zhao Haifeng Guo Jingcheng Li Muhammad Abdul Rehman Rashid Chunju Lu Weiyong Zhou Xingka Yang Yuntao Liang Hao Wu Dongjing Qing Lijun Gao Gaoxing Dai Danting Li Guofu Deng Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice |
| description |
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. |
| format |
article |
| author |
Yinghua Pan Lei Chen Yan Zhao Haifeng Guo Jingcheng Li Muhammad Abdul Rehman Rashid Chunju Lu Weiyong Zhou Xingka Yang Yuntao Liang Hao Wu Dongjing Qing Lijun Gao Gaoxing Dai Danting Li Guofu Deng |
| author_facet |
Yinghua Pan Lei Chen Yan Zhao Haifeng Guo Jingcheng Li Muhammad Abdul Rehman Rashid Chunju Lu Weiyong Zhou Xingka Yang Yuntao Liang Hao Wu Dongjing Qing Lijun Gao Gaoxing Dai Danting Li Guofu Deng |
| author_sort |
Yinghua Pan |
| title |
Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice |
| title_short |
Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice |
| title_full |
Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice |
| title_fullStr |
Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice |
| title_full_unstemmed |
Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice |
| title_sort |
natural variation in osmkk3 contributes to grain size and chalkiness in rice |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/fab178e376154ea4839ffe30f8169d35 |
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