A critical suppression feedback loop determines soybean photoperiod sensitivity

文献类型： 外文期刊

第一作者： Zhao, Xiaohui

作者： Zhao, Xiaohui;Li, Haiyang;Wang, Lingshuang;Wang, Jianhao;Huang, Zerong;Du, Haiping;Li, Yaru;Yang, Jiahui;He, Milan;Cheng, Qun;Lin, Xiaoya;Liu, Baohui;Kong, Fanjiang;Wang, Jianhao

作者机构：

期刊名称：DEVELOPMENTAL CELL （ 影响因子：10.7； 五年影响因子：11.5 ）

ISSN： 1534-5807

年卷期： 2024 年 59 卷 13 期

页码：

收录情况： SCI

摘要： Photoperiod sensitivity is crucial for soybean flowering, adaptation, and yield. In soybean, photoperiod sensitivity centers around the evening complex (EC) that regulates the transcriptional level of the core transcription factor E1, thereby regulating flowering. However, little is known about the regulation of the activity of EC. Our study identifies how E2/GIGANTEA (GI) and its homologs modulate photoperiod sensitivity through interactions with the EC. During long days, E2 interacts with the blue-light receptor flavin-binding, kelch repeat, F box 1 (FKF1), leading to the degradation of J/ELF3, an EC component. EC also suppresses E2 expression by binding to its promoter. This interplay forms a photoperiod regulatory loop, maintaining sensitivity to photoperiod. Disruption of this loop leads to losing sensitivity, affecting soybean's adaptability and yield. Understanding this loop's dynamics is vital for molecular breeding to reduce soybean's photoperiod sensitivity and develop cultivars with better adaptability and higher yields, potentially leading to the creation of photoperiod-insensitive varieties for broader agricultural applications.

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