Genetic variations in ARE1 mediate grain yield by modulating nitrogen utilization in rice

文献类型： 外文期刊

第一作者： Wang, Qing

作者： Wang, Qing;Nian, Jinqiang;Yu, Hong;Zhang, Jian;Bai, Jiaoteng;Chen, Lichao;Xie, Qingjun;Feng, Jian;Yang, Xiaolu;Peng, Juli;Li, Jiayang;Zuo, Jianru;Wang, Qing;Nian, Jinqiang;Yu, Hong;Zhang, Jian;Bai, Jiaoteng;Chen, Lichao;Xie, Qingjun;Feng, Jian;Yang, Xiaolu;Peng, Juli;Li, Jiayang;Zuo, Jianru;Wang, Qing;Bai, Jiaoteng;Chen, Lichao;Xie, Qingjun;Feng, Jian;Yang, Xiaolu;Chen, Fan;Li, Jiayang;Zuo, Jianru;Xie, Xianzhi;Bai, Bo;Dong, Guojun;Hu, Jiang;Qian, Qian;Chen, Fan;Zuo, Jianru

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2018 年 9 卷

页码：

收录情况： SCI

摘要： In crops, nitrogen directly determines productivity and biomass. However, the improvement of nitrogen utilization efficiency (NUE) is still a major challenge in modern agriculture. Here, we report the characterization of are1, a genetic suppressor of a rice fd-gogat mutant defective in nitrogen assimilation. ARE1 is a highly conserved gene, encoding a chloroplast-localized protein. Loss-of-function mutations in ARE1 cause delayed senescence and result in 10-20% grain yield increases, hence enhance NUE under nitrogen-limiting conditions. Analysis of a panel of 2155 rice varieties reveals that 18% indica and 48% aus accessions carry small insertions in the ARE1 promoter, which result in a reduction in ARE1 expression and an increase in grain yield under nitrogen-limiting conditions. We propose that ARE1 is a key mediator of NUE and represents a promising target for breeding high-yield cultivars under nitrogen-limiting condition.

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