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OsMADS17 simultaneously increases grain number and grain weight in rice

文献类型： 外文期刊

作者： Li, Yuanjie 1 ; Wu, Sheng 1 ; Huang, Yongyu 1 ; Ma, Xin 1 ; Tan, Lubin 1 ; Liu, Fengxia 1 ; Lv, Qiming 2 ; Zhu, Zuofeng 1 ; Hu, Meixia 2 ; Fu, Yongcai 1 ; Zhang, Kun 1 ; Gu, Ping 1 ; Xie, Daoxin 3 ; Sun, Hongying 1 ; Sun, Chuanqing 1 ;

作者机构： 1.China Agr Univ, Dept Plant Genet & Breeding, Beijing 100193, Peoples R China

2.Hunan Acad Agr Sci, Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China

3.Tsinghua Univ, Dept Biol Sci & Biotechnol, MOE Key Lab Bioinformat, Beijing 100084, Peoples R China

期刊名称：NATURE COMMUNICATIONS （ 影响因子：16.6； 五年影响因子：17.0 ）

ISSN：

年卷期： 2023 年 14 卷 1 期

页码：

收录情况： SCI

摘要： During the processes of rice domestication and improvement, a trade-off effect between grain number and grain weight was a major obstacle for increasing yield. Here, we identify a critical gene COG1, encoding the transcription factor OsMADS17, with a 65-bp deletion in the 5 untranslated region (5 ' UTR) presented in cultivated rice increasing grain number and grain weight simultaneously through decreasing mRNA translation efficiency. OsMADS17 controls grain yield by regulating multiple genes and that the interaction with one of them, OsAP2-39, has been characterized. Besides, the expression of OsMADS17 is regulated by OsMADS1 directly. It indicates that OsMADS1-OsMADS17-OsAP2-39 participates in the regulatory network controlling grain yield, and downregulation of OsMADS17 or OsAP2-39 expression can further improve grain yield by simultaneously increasing grain number and grain weight. Our findings provide insights into understanding the molecular basis co-regulating rice yield-related traits, and offer a strategy for breeding higher-yielding rice varieties. The trade-off between grain number and grain weight is a major obstacle for increasing rice yield. Here, the authors show that variation in 5' UTR of OsMADS17 can simultaneously increase grain number and grain weight through decreasing mRNA translation efficiency.

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