Unlocking ABA's role in rice cold tolerance: insights from Zhonghua 11 and Kasalath

文献类型： 外文期刊

第一作者： Li, Wenyu

作者： Li, Wenyu;Lou, Xin;Wang, Zhijun;Zhang, Di;Li, Lingling;Ding, Xiaoping;Cheng, Gongye;Nie, Weiying;Li, Zhilin;Yu, Jianghui;He, Jiwai;Ye, Nenghui;Duan, Meijuan;Liu, Citao;Duan, Meijuan;Yuan, Dingyang

作者机构：

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：4.2； 五年影响因子：4.9 ）

ISSN： 0040-5752

年卷期： 2025 年 138 卷 1 期

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收录情况： SCI

摘要： Key messageUnraveling key ABA pathways, including OsWRKY71-OsABA8ox1 and OsbZIP73-OsNCED5, provides valuable insights for improving cold tolerance in rice breeding for cold-prone regions.AbstractCold stress limits rice (Oryza sativa L.) production in cooler climates. This study uncovers how abscisic acid (ABA) signaling enhances cold tolerance in the rice variety Zhonghua 11 (ZH11) compared to the cold-sensitive Kasalath. Under cold stress, ZH11 rapidly accumulates ABA through efficient regulation of key genes. The transcription factor OsWRKY71ZH11 represses the ABA catabolism gene OsABA8ox1 during early stress, enabling quick ABA accumulation. Additionally, OsbZIP73 regulates the ABA synthesis gene OsNCED5 to maintain ABA balance during prolonged stress. Transgenic ZH11 plants overexpressing OsWRKY71ZH11 exhibited enhanced cold tolerance, while overexpression of OsWRKY71Ka did not confer benefits. Haplotype analysis linked allelic variations in OsWRKY71 and OsNCED5 to differences in cold tolerance. Our findings highlight critical ABA signaling pathways that enhance cold tolerance in rice. Targeting these pathways offers promising strategies for breeding cold-resistant rice varieties, improving resilience in cold-prone regions.

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