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： Zhang, Xuan 1 ; Dong, Shaoyun 2 ; Beckles, Diane M. 3 ; Guan, Jiantao 2 ; Liu, Xiaoping 2 ; Miao, Han 2 ; Zhang, Shengping 2 ; Lou, Qunfeng 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement &, Nanjing 210095, Peoples R China
2.Chinese Acad Agr Sci, Inst Vegetables & Flowers, State Key Lab Vegetable Biobreeding, Beijing 100081, Peoples R China
3.Univ Calif Davis, Dept Plant Sci, One Shield Ave, Davis, CA 95616 USA
关键词： Cucumber; Salt stress; Phytohormone; MES; Gene expression
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.2； 五年影响因子：4.6 ）
ISSN： 0304-4238
年卷期： 2025 年 343 卷
页码：
收录情况： SCI
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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