The OsEBF1-OsEIL5-OsPP91 module regulates rice heat tolerance via ubiquitination and transcriptional activation
文献类型： 外文期刊
作者： Liu, Jianping 1 ; Wang, Ke 2 ; Wang, Guining 1 ; Peng, Zhi 3 ; Wang, Tao 3 ; Meng, Yang 3 ; Huang, Jinli 3 ; Huo, Jiaohan 3 ; Li, Xin 1 ; Zhu, Xiaoqi 1 ; Xu, Feiyun 1 ; Zhang, Qian 3 ; Wang, Zhengrui 3 ; Chen, Hao 4 ; Wang, Ya 5 ; Xu, Weifeng 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Ctr Plant Water use & Nutr Regulat & Coll JunCao S, Joint Int Res Lab Water & Nutrient Crop, Fuzhou 350002, Peoples R China
2.Fujian Acad Agr Sci, Inst Resources Environm & Soil Fertilizer, Fuzhou 350000, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Resources & Environm, Fuzhou 350002, Peoples R China
4.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China
5.Henan Acad Agr Sci, Cereal Crops Res Inst, Zhengzhou 450002, Peoples R China
期刊名称：CELL REPORTS （ 影响因子：6.9； 五年影响因子：8.1 ）
ISSN： 2211-1247
年卷期： 2025 年 44 卷 2 期
页码：
收录情况： SCI
摘要： Understanding the regulatory mechanisms underlying the plant heat stress response is important for developing climate-resilient crops, including rice (Oryza sativa). Here, we report that OsEIL5, one member of the ETHYLENE INSENSITIVE3-LIKE family, positively regulates rice heat tolerance at the seedling and reproductive stages. OsEIL5 directly binds to the promoter of OsPP91 (encoding one type 2C protein phosphatase) and activates its expression. OsPP91 is required for rice thermotolerance, and overexpressing OsPP91 in oseil5-1 partially rescues its heat sensitivity. The F box protein OsEBF1 interacts with OsEIL5 and degrades it through the ubiquitination pathway, resulting in the reduction of OsPP91 expression and ultimately weakening rice heat tolerance. Knocking out OsEIL5 in the EBF1R13 line partially reduces its extremely high heat tolerance. Taken together, our work uncovers a mechanism that finely regulates rice thermotolerance through the OsEBF1-OsEIL5-OsPP91 module at the posttranslational and transcriptional levels.
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