A C2H2 zinc finger protein, OsZOS2-19, modulates ABA sensitivity and cold response in rice

文献类型： 外文期刊

第一作者： Zhang, Di

作者： Zhang, Di;Ding, Xiaoping;Wang, Zhijun;Li, Wenyu;Li, Lingling;Liu, Ling;Zhou, Huang;Yu, Jianghui;Zheng, Cheng;Wu, Houxiong;Duan, Meijuan;Liu, Citao;Yuan, Dingyang;Duan, Meijuan

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关键词： OsZOS2-19; Cold stress; ABA sensitivity; Rice (Oryza sativa L.); ROS regulation

期刊名称：PLANT AND CELL PHYSIOLOGY （ 影响因子：4.0； 五年影响因子：4.7 ）

ISSN： 0032-0781

年卷期： 2025 年 66 卷 5 期

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收录情况： SCI

摘要： Cold stress is a major factor limiting rice (Oryza sativa L.) productivity, making it crucial to understand the molecular mechanisms underlying stress responses to develop resilient crops. In this study, we characterized OsZOS2-19, a cold- and abscisic acid (ABA)-responsive C2H2 zinc finger protein, which functions as a transcriptional repressor. Overexpression of OsZOS2-19 in rice lines increases sensitivity to both cold and ABA, reducing cold tolerance, disrupting osmotic balance, and impairing reactive oxygen species (ROS) scavenging. RNA sequencing revealed that OsZOS2-19 overexpression interfered with key stress-response pathways, including those associated with sugar metabolism and glutathione biosynthesis. These findings suggest that OsZOS2-19 negatively regulates cold tolerance and ABA sensitivity by modulating ROS accumulation and osmotic balance, offering new insights into cold adaptation in rice.

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