OsPRMT6b balances plant growth and high temperature stress by feedback inhibition of abscisic acid signaling

文献类型： 外文期刊

第一作者： Jin, Xin

作者： Jin, Xin;Lin, Qibing;Zhang, Xinyue;Zhang, Shuang;Ma, Weiwei;Sheng, Peike;Zhang, Limin;Wu, Minxi;Zhu, Xudong;Li, Zhiwei;Liu, Bojuan;Wang, Jiachang;Wang, Yupeng;Dong, Kun;Yu, Ming;Ren, Yulong;Cheng, Zhijun;Lei, Cailin;Guo, Xiuping;Wang, Xin;Wang, Haiyang;Wu, Fu-Qing;Zhu, Shanshan;Wan, Jianmin;Wan, Jianmin

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）

ISSN：

年卷期： 2025 年 16 卷 1 期

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收录情况： SCI

摘要： Plants rapidly induce strong abscisic acid (ABA) signaling in response to stress, but how they weaken ABA signaling to resume normal growth after stress is unclear. Here, we find that arginine methyltransferase 6b (OsPRMT6b) methylates three arginine residues (R48, R79, R113) in ABA receptor OsPYL/RCAR10 (OsPYR1-LIKE/REGULATORY COMPONENT OF ABA RECEPTOR, R10), thereby enhancing its interaction with Tiller Enhancer (TE) and promoting its ubiquitination and degradation through the 26S-proteasome pathway. OsPRMT6b is induced by ABA at both transcriptional and translational levels. Further, we find that R10 protein accumulates under high temperature stress but declines as temperature drops, whereas OsPRMT6b protein shows an opposite trend. And WT plants display a better growth recovery than osprmt6b mutants after high temperature. These findings suggest that OsPRMT6b acts as a switch to downregulate ABA signaling for growth recovery after high temperature stress.

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