Integrative Biology Journals
JIPB

J Integr Plant Biol. ›› 2025, Vol. 67 ›› Issue (6): 1551-1567.DOI: 10.1111/jipb.13889

• Molecular Physiology • Previous Articles     Next Articles

The LUX-SWI3C module regulates photoperiod sensitivity in Arabidopsis thaliana

Jianhao Wang1,2,†, Huan Liu1,†, Hong Li1,†, Fan Wang1,†, Songguang Yang2, Lin Yue1, Shuangrong Liu1, Baohui Liu1, Mingkun Huang3,*, Fanjiang Kong1,*, Zhihui Sun1,*   

  1. 1. Guangdong Key Laboratory of Plant Adaptation and Molecular Design, Guangzhou Key Laboratory of Crop Gene Editing, Innovative Center of Molecular Genetic and Evolution, School of Life Science, Guangzhou University, Guangzhou 510006, China;
    2. Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    3. Jiangxi Provincial Key Laboratory of Ex Situ Plant Conservation and Utilization, Lushan Botanical Garden, Chinese Academy of Sciences, Jiangxi 332000, China
  • Received:2024-10-30 Accepted:2025-02-18 Online:2025-03-19 Published:2025-06-01
  • Contact: * Mingkun Huang (huangmk@lsbg.cn); Fanjiang Kong (kongfj@gzhu.edu.cn); and Zhihui Sun (szh@gzhu.edu.cn; Dr. Sun is fully responsible for the distribution of all materials associated with this article)
  • About author:†These authors contributed equally to this work.

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Abstract: In plants, the photoperiod sensitivity directly influences flowering time, which in turn affects latitudinal adaptation and yield. However, research into the mechanisms underlying photoperiod sensitivity, particularly those mediated by epigenetic regulation, is still in its nascent stages. In this study, we analyzed the regulation of photoperiod sensitivity in Arabidopsis thaliana. We demonstrate that the evening complex LUX ARRYTHMO (LUX) and the chromatin remodeling factor SWITCH/SUCROSE NONFERMENTING 3C (SWI3C) regulate GI locus chromatin compaction and H3K4me3 modification levels at the GIGANTEA locus under different photoperiod conditions. This mechanism is one of the key factors that allow plants to distinguish between long-day and short-day photoperiods. Our study provides insight into how the LUX-SWI3C module regulates photoperiod sensitivity at the epigenetic level.

Key words: Sciences, Jiangxi 332000, China

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