Melatonin-Mediated Enhancement of Photosynthetic Capacity and Photoprotection Improves Salt Tolerance in Wheat

文献类型： 外文期刊

第一作者： Yan, Di

作者： Yan, Di;Wang, Jiajie;Lu, Zhenzong;Liu, Rui;Hong, Yue;Su, Baocai;Wang, Ye;Peng, Zhen;Yu, Chunxin;Gao, Yuerong;Liu, Ziyan;Duan, Liusheng;Li, Runzhi;Wang, Ye;Peng, Zhen;Yu, Chunxin;Gao, Yuerong;Liu, Ziyan;Duan, Liusheng;Li, Runzhi;Xu, Zhaoshi;Duan, Liusheng

作者机构：

关键词： wheat (Triticum aestivum L); salt stress; melatonin; RNA-seq; photosynthesis

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 23 期

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收录情况： SCI

摘要： The role of melatonin in plant growth and response to environmental stress has been widely demonstrated. However, the physiological and molecular regulation of salt tolerance in wheat seedlings by melatonin remains unclear. In this study, we investigated changes in phenotype, physiology, photosynthetic parameters, and transcript levels in wheat seedlings to reveal the role of melatonin in the regulation of salt tolerance in wheat. The results indicate that the application of exogenous melatonin significantly alleviates growth inhibition, reactive oxygen species accumulation, and membrane oxidative damage induced by salt stress in wheat. Additionally, exogenous melatonin increased antioxidant enzyme activity and regulated photosynthetic gas exchange. Transcriptomic data showed a significant up-regulation of genes encoding light-harvesting chlorophyll protein complex proteins in photosynthesis and genes related to chlorophyll and carotenoid biosynthesis under the influence of melatonin. These results suggest that exogenous melatonin improves salt tolerance in wheat seedlings by enhancing the antioxidant, photoprotective, and photosynthesis activities.

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