文献类型： 外文期刊
第一作者： Chai, Juntao
作者： Chai, Juntao;Wang, Chunming;Cai, Maohong;Zhou, Liang;Zhang, Huan;Wu, Mingming;Zhou, Shirong;Wan, Jianmin;Zhu, Shanshan;Li, Chaonan;Zheng, Xiaoming;Sheng, Peike;Jin, Xin;Cheng, Zhijun;Zhang, Xin;Lei, Cailin;Ren, Yulong;Lin, Qibing;Guo, Xiuping;Wang, Jie;Zhao, Zhichao;Wan, Jianmin
作者机构：
关键词： rice (Oryza sativa); Ehd1; heading date; OsRE1; OsRIP1
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：9.803； 五年影响因子：9.555 ）
ISSN： 1467-7644
年卷期：
页码：
收录情况： SCI
摘要： Heading date is a key agronomic trait affecting crop yield. In rice, Early heading date 1 (Ehd1) is an important B-type response regulator in determination of heading date. Although many regulatory factors ofEhd1expression have been functionally characterized, the direct regulators ofEhd1largely remain to be identified. Here, we identified a new regulator ofEhd1, OsRE1, that directly binds to the A-box motif in theEhd1promoter.Osre1confers an early heading phenotype due to elevated expression levels ofEhd1. OsRE1 is a nucleus-localized bZIP transcription factor with a diurnal rhythmic expression pattern. Furthermore, we identified an OsRE1-interacting protein, OsRIP1, and demonstrated that OsRIP1 can repress the transcript expression ofEhd1in an OsRE1-dependent manner. Our genetic data showed that OsRE1 and OsRIP1 may function upstream ofEhd1in regulating heading date. Together, our results suggest that OsRE1 functions cooperatively with OsRIP1 to regulate heading date through finely modulating the expression ofEhd1. In addition, OsRE1 and OsRIP1 are two minor heading date regulators, which are more desirable for fine-tuning heading date to improve rice regional adaptability.
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