Linking glucose signaling to nitrogen utilization by the OsHXK7-ARE4 complex in rice

文献类型： 外文期刊

第一作者： Ma, Xiaohui

作者： Ma, Xiaohui;Nian, Jinqiang;Yu, Hong;Zhang, Fengxia;Feng, Tianpeng;Kou, Liquan;Zhang, Jian;Wang, Danfeng;Li, Hanwen;Chen, Lichao;Wang, Guodong;Li, Jiayang;Zuo, Jianru;Ma, Xiaohui;Nian, Jinqiang;Feng, Tianpeng;Wang, Danfeng;Li, Hanwen;Chen, Lichao;Wang, Guodong;Li, Jiayang;Zuo, Jianru;Dong, Guojun;Qian, Qian;Xie, Xianzhi;Zuo, Jianru;Zuo, Jianru

作者机构：

期刊名称：DEVELOPMENTAL CELL （ 影响因子：11.8； 五年影响因子：12.4 ）

ISSN： 1534-5807

年卷期： 2023 年 58 卷 16 期

页码：

收录情况： SCI

摘要： How reciprocal regulation of carbon and nitrogen metabolism works is a long-standing question. In plants, glucose and nitrate are proposed to act as signaling molecules, regulating carbon and nitrogen metabolism via largely unknown mechanisms. Here, we show that the MYB-related transcription factor ARE4 coordinates glucose signaling and nitrogen utilization in rice. ARE4 is retained in the cytosol in complexing with the glucose sensor OsHXK7. Upon sensing a glucose signal, ARE4 is released, is translocated into the nucleus, and activates the expression of a subset of high-affinity nitrate transporter genes, thereby boosting nitrate uptake and accumulation. This regulatory scheme displays a diurnal pattern in response to circadian changes of soluble sugars. The are4 mutations compromise in nitrate utilization and plant growth, whereas overexpression of ARE4 increases grain size. We propose that the OsHXK7-ARE4 complex links glucose to the transcriptional regulation of nitrogen utilization, thereby coordinating carbon and nitrogen metabolism.

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