Nitrogen enhances post-drought recovery in wheat by modulating TaSnRK2.10-mediated regulation of TaNLP7

文献类型： 外文期刊

第一作者： Mu, Junyi

作者： Mu, Junyi;Wang, Honglei;Yang, Fan;Lyu, Jinyang;Yang, Xin;Sun, Na;Zheng, Guolan;Zhou, Runxiang;Xu, Bo;Xing, Sijie;Han, Chao;Xia, Guang-Min;Fan, Min;Bai, Ming-Yi;Mu, Junyi;Wang, Honglei;Yang, Fan;Lyu, Jinyang;Yang, Xin;Sun, Na;Zheng, Guolan;Zhou, Runxiang;Xu, Bo;Xing, Sijie;Han, Chao;Xia, Guang-Min;Fan, Min;Bai, Ming-Yi;Mu, Junyi;Wang, Honglei;Yang, Fan;Lyu, Jinyang;Yang, Xin;Sun, Na;Zheng, Guolan;Zhou, Runxiang;Xu, Bo;Xing, Sijie;Han, Chao;Xia, Guang-Min;Fan, Min;Bai, Ming-Yi;Wang, Dongzhi;Xiao, Jun;Li, Genying

作者机构：

期刊名称：NATURE PLANTS （ 影响因子：13.6； 五年影响因子：17.0 ）

ISSN： 2055-026X

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Drought stress affects plant growth and agricultural production, especially in the context of global climate change. Post-drought rehydration is crucial for plant recovery and sustained growth, yet the mechanisms underlying this process remain poorly understood. Nitrogen fertilizer plays a role in optimizing plant growth and enhancing stress resistance, but its role in post-drought recovery has not been fully elucidated. Here we demonstrate that nitrogen enhances post-drought recovery in wheat by modulating TaSnRK2.10-mediated regulation of TaNLP7. Transcriptomic analysis revealed that nitrogen supplementation increased the positive effects of rewatering on gene expression. Nitrogen inhibits the activity of TaSnRK2.10, a kinase involved in abscisic acid signalling. TaSnRK2.10 interacts with and phosphorylates TaNLP7-3A, a master regulator of the nitrate signalling pathway, reducing its nuclear localization and stability. This phosphorylation event suppresses genes involved in nitrate response, inhibiting nitrate-induced growth. Analysis of the nitrogen response levels in a wheat natural population revealed that transcriptional levels of the two haplotypes of TaSnRK2.10-4A respond differently to abscisic acid and nitrate, providing insights into the selection of wheat varieties that may be better suited for different environmental conditions to optimize yield.

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