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Transcriptomic Insights into the Dual-Modulatory Role of EGCG in Alleviating Glyphosate-Induced Oxidative Stress in Cucumis melo

文献类型： 外文期刊

作者： Lu, Qiuying;Zhai, Dongmiao;Wu, Yaxian;Mao, Yihu;Ahammed, Golam Jalal;Zhang, Xinzhong;Yu, Jingbo;Li, Xin

作者机构：

关键词： EGCG;glyphosate;Cucumis melo;detoxification;flavonoid biosynthesis;RNA-Seq;antioxidant defense

期刊名称： INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

ISSN： 1661-6596

年卷期： 2025 年 26 卷 20 期

页码：

收录情况： SCIE（2025版）

摘要： Glyphosate is one of the most widely used herbicides in agricultural, horticultural, and urban environments. However, its residue accumulation and oxidative damage pose serious threats to crop health and food safety. In this study, we evaluated the potential of epigallocatechin gallate, a natural polyphenol derived from tea, to alleviate glyphosate-induced stress in melon (Cucumis melo L.). LC-MS/MS analysis revealed that EGCG significantly reduced glyphosate residues in plant tissues. Transcriptome analysis indicated that glyphosate induced extensive transcriptional reprogramming, activating genes involved in detoxification and antioxidant defense. Co-treatment with glyphosate and EGCG partially mitigated this stress response and redirected gene expression toward secondary metabolic pathways, particularly flavonoid and phenylalanine biosynthesis. Under herbicide stress, EGCG restored the transcription of key flavonoid biosynthetic genes, including PAL, C4H, CHI, and OMT. Meanwhile, EGCG also modulated the expression of APX, SOD, and GST, suggesting a selective effect on antioxidant systems. Co-expression network analysis identified key hub genes associated with oxidative stress and flavonoid metabolism. These findings demonstrate the dual regulatory role of EGCG in suppressing acute oxidative stress while enhancing metabolic adaptability, highlighting its potential as a natural additive for reducing herbicide residues in fruit crops.

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