Early heading 7 interacts with DTH8, and regulates flowering time in rice

文献类型： 外文期刊

第一作者： Cai, Maohong

作者： Cai, Maohong;Chen, Saihua;Wu, Mingming;Zheng, Tianhui;Zhou, Liang;Zhang, Huan;Wang, Jiachang;Xu, Xinyang;Chai, Juntao;Jiang, Ling;Wan, Jianmin;Li, Chaonan;Ren, Yulong;Guo, Xiuping;Zhang, Xin;Lei, Cailin;Cheng, Zhijun;Wang, Jie;Zhai, Huqu;Wang, Haiyang;Zhu, Shanshan;Wan, Jianmin

作者机构：

关键词： EH7; Ghd7; DTH8; Flowering time; Oryza sativa

期刊名称：PLANT CELL REPORTS （ 影响因子：4.57； 五年影响因子：4.463 ）

ISSN： 0721-7714

年卷期： 2019 年 38 卷 5 期

页码：

收录情况： SCI

摘要： Key messageEH7/Ghd7 interacts with DTH8, and regulates heading date by controlling the expression of Ehd1 in rice.AbstractHeading date, or flowering time, an important agronomic trait, influences regional adaptability and yield of crops. Many genes related to heading date in rice have been identified, and a preliminary regulatory network has been established, but the relationships between proteins involved are poorly understood. We identified a flowering suppressor EH7 (Early heading 7) that represses flowering under long-day (LD) conditions. The eh7 allele caused earlier heading, shorter plant height and less grain per main panicle than did the wild type (WT), but the tiller number and 1000-grain weight were not significantly affected under natural long-day conditions. Biochemical assays showed that EH7 interacts with DTH8. Quantitative PCR showed that EH7 inhibited heading date by downregulating the expression of Ehd1, Hd3a and RFT1. We propose that EH7 interacts with DTH8 to control flowering time by regulating the expression of Ehd1, Hd3a and RFT1.

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