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Jasmonic Acid-Mediated Antioxidant Defense Confers Chilling Tolerance in Okra (Abelmoschus esculentus L.)

文献类型： 外文期刊

作者： Liu, Weixia 1 ; Wang, Jielin 2 ; Zhu, Dan 1 ; Yin, Xiaomin 1 ; Du, Gongfu 1 ; Qin, Yuling 1 ; Zhang, Zhiyuan 2 ; Liu, Ziji 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Key Lab Crop Gene Resources & Germplasm Enhancemen, Minist Agr & Rual Affairs, Trop Crops Genet Resources Inst,Key Lab Trop Crops, Haikou 571101, Peoples R China

2.Zhejiang Univ, Hainan Inst, Sanya 572025, Peoples R China

关键词： Abelmoschus esculentus L.; chilling stress; JA; transcriptome; metabolome

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 7 期

页码：

收录情况： SCI

摘要： Chilling stress inhibits the growth of okra (Abelmoschus esculentus L.), reduces its overall agricultural yield, and deteriorates fruit quality. Therefore, it is crucial to elucidate the mechanism through which okra plants respond to chilling stress. This study investigates the molecular mechanisms of chilling tolerance by comparing the transcriptome and metabolome of chilling-tolerant (Ae182) and chilling-sensitive (Ae171) okra varieties. We found that Ae182 exhibits higher antioxidant enzyme activities, including SOD, POD, CAT, and APX, suggesting it mitigates oxidative stress more effectively than Ae171. Metabolomics analysis revealed that Ae182 produces higher levels of jasmonic acid (JA) and JA-isoleucine (JA-Ile) under chilling stress, potentially activating genes that alleviate oxidative damage. Additionally, integrated analyses identified key transcription factors, such as AP2, BHLH, and MYB, associated with JA and chilling stress. These findings provide candidate genes for further research on chilling resistance in okra.

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