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Transcriptomic Analysis of Salicylic Acid Promoting Seed Germination of Melon under Salt Stress

文献类型： 外文期刊

作者： Yan, Miao 1 ; Mao, Jiancai 1 ; Wu, Ting 1 ; Xiong, Tao 1 ; Huang, Quansheng 2 ; Wu, Haibo 1 ; Hu, Guozhi 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Hami Melon Res Ctr, Urumqi 830091, Peoples R China

2.Xinjiang Acad Agr Sci, Res Inst Nucl Technol & Biotechnol, Urumqi 830091, Peoples R China

关键词： Cucumis melo; salicylic acid; salt stress; transcriptome; differential genes

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）

ISSN：

年卷期： 2023 年 9 卷 3 期

页码：

收录情况： SCI

摘要： This study investigated how salicylic acid (SA) mediates the response of melon (Cucumis melo) seeds to salt stress using physiological and transcriptomic methods. The effects of SA on the antioxidant enzymes, osmoregulatory substances, and transcriptome of melon seeds under salt stress were investigated using sodium chloride (NaCl, 100 mmol center dot L-1) as the stress stimulant and SA + NaCl (0.25 mmol center dot L-1 + 100 mmol center dot L-1) as the alleviation treatment. The results showed that SA positively influences salt tolerance by increasing the activity of superoxide dismutase activity (SOD) and catalase activity (CAT) while decreasing proline content (Pro). Differentially expressed genes (DEGs) were identified by transcriptome data analysis, of which 2958 were up-regulated, and 2157 were down-regulated. These genes were mainly involved in the mitogen-activated protein kinase (MAPK) signaling pathway and plant hormone signal transduction, lipid metabolism (linoleic and alpha-linolenic fatty acid metabolism), biosynthesis of secondary metabolites (phenylpropanoid pathway and flavonoid biosynthesis), and related pathways. Further analysis revealed that SA might alleviate salt stress by initiating a series of signaling pathways under salt stress, participating in lignin biosynthesis to improve cell wall stability, and positively regulating lipoxygenase (LOX) genes. These results provide valuable information and new strategies for future salt resistance cultivation and high melon yield.

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