数字农科院2.0

Ethylene Regulates Combined Drought and Low Nitrogen Tolerance in Wheat: Proteomic Analysis

文献类型： 外文期刊

作者： Yan, Jiji;Wang, Daoping;Kang, Shuyu;He, Zhang;Li, Xin;Tang, Wensi;Chen, Kai;Pan, Yinghong;Zhou, Yongbin;Xu, Zhaoshi;Chen, Jun;Ma, Youzhi;Chen, Ming;Pang, Chunhua

作者机构：

关键词： combined drought and low nitrogen stress;ethylene synthesis;ethylene signal transduction;proteomic analysis;wheat

期刊名称： AGRONOMY-BASEL

ISSN：

年卷期： 2023 年 13 卷 7 期

页码：

收录情况： SCIE（2023版）

摘要： Wheat is a staple crop in China's arid and semi-arid regions. Drought and low nitrogen (LN) are two major constraints to wheat growth and production. However, the molecular mechanism underlying wheat response to both drought and LN stress remains unknown. Accordingly, we conducted a proteomic study on the roots of two wheat varieties, Chang6878 (drought tolerant) and Shi4185 (drought sensitive) and compared the differences between drought and combined drought and LN stress treatments. In total, 5143 proteins were identified, of which 163 differentially abundant proteins (DAPs) were uniquely upregulated under drought and LN stress in Chang6878. Enrichment analysis showed that DAPs were mainly involved in mitogen-activated protein kinase signaling, phenylpropanoid biosynthesis, glutathione metabolism, ethylene biosynthesis, ethylene signal transduction, and oxidation-reduction reactions. These DAPs were verified via parallel reaction monitoring and quantitative real-time polymerase chain reaction. Chang6878 was treated with the ethylene synthesis precursor 1-aminocyclopropanecarboxylic acid, and its resistance to drought and LN stress improved. After treatment with the ethylene synthesis inhibitor silver nitrate and ethylene signal transduction inhibitor 1-methylcyclopropene, drought and LN stress resistance reduced. These results provide novel insights into the tolerance mechanisms of Chang6878 to drought and LN stress by altering ethylene synthesis and signal transduction. This study provides a reference for breeding drought- and low-nitrogen-tolerant wheat germplasm resources and a theoretical basis for maintaining food security in arid, barren areas.

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