GmEID1 modulates light signaling through the Evening Complex to control flowering time and yield in soybean

文献类型： 外文期刊

第一作者： Qin, Chao

作者： Qin, Chao;Zhang, Shengrui;Zhao, Fen;Wei, Xiuzhi;Jiao, Yuanchen;Li, Zhuang;Niu, Zhiyuan;Li, Xiaojiao;Zhao, Tao;Liu, Jun;Liu, Bin;Li, Haiyang;Kong, Fanjiang;Jia, Zhiwei;Li, Xiaojiao;Lu, Yuping;Zhao, Fen;Zhao, Fen;Niu, Zhiyuan;Zhou, Yonggang;Li, Haiyan

作者机构：

关键词： yield; circadian Evening Complex; GmEID1; flowering; phytochrome A

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.1； 五年影响因子：12.0 ）

ISSN： 0027-8424

年卷期： 2023 年 120 卷 15 期

页码：

收录情况： SCI

摘要： Soybean (Glycine max) morphogenesis and flowering time are accurately regulated by photoperiod, which determine the yield potential and limit soybean cultivars to a narrow latitudinal range. The E3 and E4 genes, which encode phytochrome A photoreceptors in soybean, promote the expression of the legume-specific flowering repressor E1 to delay floral transition under long-day (LD) conditions. However, the underlying molec-ular mechanism remains unclear. Here, we show that the diurnal expression pattern of GmEID1 is opposite to that of E1 and targeted mutations in the GmEID1 gene delay soybean flowering regardless of daylength. GmEID1 interacts with J, a key component of circadian Evening Complex (EC), to inhibit E1 transcription. Photoactivated E3/E4 interacts with GmEID1 to inhibit GmEID1-J interaction, promoting J degradation resulting in a negative correlation between daylength and the level of J protein. Notably, targeted mutations in GmEID1 improved soybean adaptability by enhancing yield per plant up to 55.3% compared to WT in field trials performed in a broad latitudinal span of more than 24 & DEG;. Together, this study reveals a unique mechanism in which E3/E4-GmEID1-EC module controls flowering time and provides an effective strategy to improve soybean adaptability and production for molecular breeding.

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