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中国农学通报 ›› 2025, Vol. 41 ›› Issue (6): 118-125.doi: 10.11924/j.issn.1000-6850.casb2024-0327

所属专题: 生物技术

• 生物科学 • 上一篇    下一篇

基于广泛靶向代谢组学的芋头代谢物和抗氧化酶活性的差异分析

符梅(), 李桂花, 罗文龙, 骆善伟, 郭巨先()   

  1. 广东省农业科学院蔬菜研究所/广东省蔬菜新技术研究重点实验室,广州 510640
  • 收稿日期:2024-05-17 修回日期:2024-08-15 出版日期:2025-02-25 发布日期:2025-02-24
  • 通讯作者:
    郭巨先,女,1970年出生,硕士研究生,硕士研究生,研究方向:特色蔬菜资源利用研究。通信地址:510640 广州市天河区金颖路广东省农业科学院蔬菜研究所,Tel:020-85647264,E-mail:
  • 作者简介:

    符梅,女,1988年出生,海南人,助理研究员,博士,研究方向:蔬菜分子生物学。通信地址:510640 广州市天河区金颖路广东省农业科学院蔬菜研究所,Tel:020-85647264,E-mail:

  • 基金资助:
    广州市重点研发计划“华南特色粮蔬两用香芋育种技术创新与新品种选育研究”(2023B03J1274); 广东省级乡村振兴战略专项种业振兴行动项目“广东省芋属蔬菜种质资源圃运行维护”(2023-NBH-00-018)

Differential Analysis of Taro Metabolites Based on Widely Targeted Metabolomics and Antioxidant Enzyme Activity

FU Mei(), LI Guihua, LUO Wenlong, LUO Shanwei, GUO Juxian()   

  1. Vegetable Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou 510640
  • Received:2024-05-17 Revised:2024-08-15 Published:2025-02-25 Online:2025-02-24

摘要:

芋头作为一种重要的粮菜兼用作物,其地下球茎含有丰富的生物活性物质。本研究旨在探索芋头哪些活性物质参与影响其食用价值,以期为芋头品质改良提供参考。本研究以红芽芋和香芋为试材,利用液质联用方法测定代谢物成分,结合农艺学性状变化,阐明影响其活性物质的关键代谢通路。相对于香芋,红芽芋的Vc含量增加13.0%,SOD和CAT分别增加63.8%和43.2%。通过代谢组学分析鉴定到244种差异代谢物,包括192种上调代谢物和52种下调代谢物。KEGG分析表明,次生代谢产物的生物合成、ABC转运蛋白、氨基酸的生物合成等途径显著富集。其中,丰度上调幅度最大的代谢物包含异鼠李素-3-O-新橙皮糖苷等9种黄酮。本研究强调这9种黄酮物质对于提高红芽芋品质具有重要作用,也为进一步开发芋头产品提供了理论基础。

关键词: 芋, 代谢组学, 营养物质, 差异代谢物, 抗氧化物质, 黄酮

Abstract:

Taro is a dual-purpose crop for food and vegetables. This study aims to explore the active substances in taro affecting its edible value, in order to provide a reference for improving the quality of taro. Red bud taro and fragrant taro were used as test materials in this study. The metabolite components were determined by liquid chromatography-mass spectrometry. Combined with the changes in agronomic traits, the key metabolic pathways affecting their active substances were elucidated. Compared with fragrant taro, the Vc contents of red bud taro were increased by 13%, while activities of SOD and CAT were increased by 63.8% and 43.2%, respectively. 244 differential metabolites were identified by metabolomics analysis, including 192 up-regulated and 52 down-regulated metabolites. KEGG analysis showed that the biosynthesis of secondary metabolites, ABC transporters, and amino acid biosynthesis pathways were significantly enriched. Among them, the metabolites with the largest up-regulated abundance included 9 flavonoids such as isorhamnetin-3-O-neohesperidin. This study emphasizes that these 9 flavonoids play an important role in improving the quality of red bud taro, and also provides a theoretical basis for the further development of taro products.

Key words: taro, metabolomics, nutrients, differential metabolites, antioxidant substances, flavone