数字农科院2.0

Genome-wide characterization of cucumber methylesterase genes and the phytohormone-mediated response to salt stress

文献类型： 外文期刊

作者： Xuan Zhang;Shaoyun Dong;Diane M. Beckles;Jiantao Guan;Xiaoping Liu;Han Miao;Shengping Zhang;Qunfeng Lou

作者机构：

关键词： Cucumber;Gene expression;MES;Phytohormone;Salt stress

期刊名称： Scientia Horticulturae

ISSN： 0304-4238

年卷期： 2025 年 343 卷

页码：

收录情况： SCIE（2025版）

摘要： Cucumber (Cucumis sativus L.) is an economically important vegetable crop but is susceptible to salinity stress. Methylesterases (MES) hydrolyze the methyl esters of salicylic acid (SA) and jasmonic acid (JA), which play important roles in plant stress response. Currently, the role of MES in salt-stress response has not been systematically studied in cucumber. In this study, we conducted a comprehensive analysis of the MES gene family leveraging the near-complete cucumber reference genome. We identified thirteen CsMES genes which grouped into three clades based on phylogenetic analyses, and examined their gene structure, domains and conserved motifs. We further categorized the cis-acting elements within the promoter regions of the CsMES genes into four functional types: light, environmental stress and hormone response, and plant growth and development. The expression patterns of CsMES genes exhibited notable diversity across various tissues. SA and JA treatments effectively alleviate salt-induced damage in cucumber seedlings. RT-qPCR analysis of CsMES genes expression under salt stress with SA or JA application suggests that these hormones mitigate salinity stress by modulating CsMESs expression. Collectively, these findings enhance our understanding of the structural and functional roles of MES genes in cucumber.

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