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热带海洋学报

• • 上一篇    

多激素协同调控在秋茄抵御移植机械损伤中的作用

龚受基1, 谢小魁2, 王日明2, 李秀坚2, 凌龙艳1, 郑坚1   

  1. 1.北部湾大学食品工程学院, 广西 钦州 535011;

    2.北部湾大学广西北部湾海洋环境变化与灾害研究重点实验室/资源与环境学院, 广西 钦州 535011

  • 收稿日期:2025-05-20 修回日期:2025-08-06 接受日期:2025-08-20
  • 通讯作者: 王日明
  • 基金资助:

    国家自然科学基金(42366009); 钦州市本级财政科技开发项目(20223623, 20233204)

The Role of multi-hormone synergistic regulation in Kandelia obovata's sesistance to transplant mechanical damage

GONG Shouji1, XIE Xiaokui2, WANG Riming2, LI Xiujian2, LING Longyan1, ZHENG Jian1   

  1. 1.College of Food Engineering, Beibu Gulf University, Qinzhou 535011, China; 

    2.Guangxi Key Laboratory of Marine Environmental Change and Disaster in Beibu Gulf/School of Resources and Environment,     Beibu Gulf University, Qinzhou 535011, China

  • Received:2025-05-20 Revised:2025-08-06 Accepted:2025-08-20
  • Supported by:
    National Natural Science Foundation of China(42366009); Qinzhou Municipal-Level Fiscal Science and Technology Development Project.(20233204)

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摘要： 本研究探究移栽秋茄根部激素表达，并分析其通过激素调控应对环境胁迫的策略。采用LC-MS/MS代谢组学技术，检测了钦州港自然栖息地（JGJ-C）与人工移栽地（KQW-E）的秋茄根部激素表达，分析其代谢及网络作用特征，并通过KEGG注释确定主要代谢通路。在两种秋茄根部共检测到62种植物激素，其中28种存在显著差异（上调16种，下调12种）。KQW-E组中，脱落酸（ABA）及其葡萄糖酯（ABA-GE）、结合态生长素（IAA-Glc）等胁迫相关激素显著下调，而玉米素（cZR）、茉莉酸前体（H2JA）等生长促进类激素显著上调。KEGG通路富集分析表明，差异激素主要富集于萜类代谢、植物激素信号转导及次生代谢物合成通路。秋茄通过ABA、生长素、茉莉酸与细胞分裂素等多激素协同调控，动态平衡活性激素水平，下调胁迫响应，上调生长相关代谢，从而优化资源分配以增强移植适应性。该研究为红树林人工移栽的激素调控及生态修复提供了理论依据。

关键词: 秋茄, LC-MS/MS, 植物激素, 代谢组学, 胁迫响应, 多激素协同调控

Abstract: To explore phytohormone expression in the roots of transplanted Kandelia obovata and analyze its strategies for coping with environmental stress through hormone regulation. Hormone expression was detected in the roots of Kandelia obovata from both natural habitat JGJ-C and the artificial transplant KQW-E at Qinzhou Port by utilizing LC-MS/MS metabolomics technology. The metabolic characteristics and network interactions were analyzed, and the main metabolic pathways were also determined through KEGG annotation.A total of 62 phytohormones were detected in the roots of the two types of Kandelia obovata, with 28 exhibiting significant differences (16 upregulated and 12 downregulated). In the KQW-E group, stress-related hormones such as abscisic acid (ABA) and its glucose ester (ABA-GE), as well as conjugated auxin (IAA-Glc), were significantly downregulated, while growth-promoting hormones like zeatin (cZR) and jasmonic acid precursor (H2JA) were significantly upregulated. KEGG pathway enrichment analysis revealed that the differential hormones were primarily enriched in terpenoid metabolism, plant hormone signal transduction, and secondary metabolite synthesis pathways. Kandelia obovata dynamically balances active hormone levels through the synergistic regulation of multiple hormones, including ABA, auxin, jasmonic acid, and cytokinin, thereby downregulating stress responses and upregulating growth-related metabolism. This optimization of resource allocation enhances transplant adaptability. This study provides a theoretical basis for hormonal regulation and ecological restoration in the artificial transplantation of mangroves.

Key words: Kandelia obovata, LC-MS/MS, plant hormones, metabolomics, stress response, multi-hormone synergistic regulation