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The Ghd7 transcription factor represses ARE1 expression to enhance nitrogen utilization and grain yield in rice

文献类型： 外文期刊

作者： Wang, Qing 1 ; Su, Qingmei 3 ; Nian, Jinqiang 1 ; Zhang, Jian 1 ; Guo, Meng 1 ; Dong, Guojun 5 ; Hu, Jiang 5 ; Wang, Rong 1 ;

作者机构： 1.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Genom, Beijing 100101, Peoples R China

2.Chinese Acad Sci, Inst Microbiol, State Key Lab Plant Genom, Beijing 100101, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Mol Dev Biol, Beijing 100101, Peoples R China

5.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Peoples R China

6.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China

7.Shandong Acad Agr Sci, Shandong Rice Res Inst, Jinan 250100, Peoples R China

8.Chinese Acad Sci, Innovat Acad Seed Design, Beijing 100101, Peoples R China

9.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Beijing 100101, Peoples R China

10.Hainan Yazhou Bay Seed Lab, Sanya 572025, Peoples R China

关键词： nitrogen utilization; rice; Ghd7-ARE1; transcriptional repression; molecular breeding

期刊名称：MOLECULAR PLANT （ 影响因子：13.164； 五年影响因子：16.357 ）

ISSN： 1674-2052

年卷期： 2021 年 14 卷 6 期

页码：

收录情况： SCI

摘要： The genetic improvement of nitrogen use efficiency (NUE) of crops is vital for grain productivity and sustainable agriculture. However, the regulatory mechanism of NUE remains largely elusive. Here, we report that the rice Grain number, plant height, and heading date7 (Ghd7) gene genetically acts upstream of ABC1 REPRESSOR1 (ARE1), a negative regulator of NUE, to positively regulate nitrogen utilization. As a transcriptional repressor, Ghd7 directly binds to two Evening Element-like motifs in the promoter and intron 1 of ARE1, likely in a cooperative manner, to repress its expression. Ghd7 and ARE1 display diurnal expression patterns in an inverse oscillation manner, mirroring a regulatory scheme based on these two loci. Analysis of a panel of 2656 rice varieties suggests that the elite alleles of Ghd7 and ARE1 have undergone diversifying selection during breeding. Moreover, the allelic distribution of Ghd7 and ARE1 is associated with the soil nitrogen deposition rate in East Asia and South Asia. Remarkably, the combination of the Ghd7 and ARE1 elite alleles substantially improves NUE and yield performance under nitrogen-limiting conditions. Collectively, these results define a Ghd7-ARE1-based regulatory mechanism of nitrogen utilization, providing useful targets for genetic improvement of rice NUE.

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[1]The Ghd7 transcription factor represses ARE1 expression to enhance nitrogen utilization and grain yield in rice. Wang, Qing,Nian, Jinqiang,Zhang, Jian,Guo, Meng,Wang, Rongsheng,Wei, Changshuo,Wang, Wan,Lin, Shaoyang,Qian, Wenfeng,Zuo, Jianru,Wang, Qing,Guo, Hui-Shan,Wang, Qing,Su, Qingmei,Nian, Jinqiang,Wang, Rongsheng,Wei, Changshuo,Guo, Hui-Shan,Lin, Shaoyang,Qian, Wenfeng,Chen, Fan,Zuo, Jianru,Su, Qingmei,Chen, Fan,Dong, Guojun,Hu, Jiang,Qian, Qian,Li, Guanwen,Xie, Xianzhi,Wang, Qing,Su, Qingmei,Nian, Jinqiang,Guo, Meng,Wei, Changshuo,Wang, Wan,Lin, Shaoyang,Qian, Wenfeng,Chen, Fan,Zuo, Jianru,Zuo, Jianru,Chen, Fan,Zuo, Jianru. 2021

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