天然产物研究与开发 ›› 2024, Vol. 36 ›› Issue (10): 1679-1691.doi: 10.16333/j.1001-6880.2024.10.004

• 研究论文 • 上一篇    下一篇

基于广泛靶向代谢组学分析香樟不同部位挥发性次生代谢产物差异

雷金梅1,2,江冰冰1,2,杨   芳1,2,郭存武3,夏宇薪4,邓秀娟1,2,刘晓慧1,2,王白娟1,2*   

  1. 1云南农业大学茶学院 云南省高校智能有机茶园建设重点实验室;2云南农业大学云南有机茶产业智能工程研究中心;3云南农业大学植物保护学院 农业生物多样性应用技术国家工程研究中心;4云南农业大学机电工程学院,昆明650201
  • 出版日期:2024-10-28 发布日期:2024-10-28
  • 基金资助:
    云南省勐海县智慧茶产业科技特派团(202304BI090013);云南省茶产业人工智能及大数据应用创新团队(202405AS350025);云南省教育厅科学研究基金项目青年人才基础研究(2024J0406);云南农业大学科研启动项目(2023-09-2022081)

Differential analysis of volatile metabolites in different parts of Cinnamomum camphor by widely-targeted volatilomics method

LEI Jin-mei1,2,JIANG Bing-bing1,2,YANG Fang1,2,GUO Cun-wu3,XIA Yu-xin4,DENG Xiu-juan1,2,LIU Xiao-hui1,2,WANG Bai-juan1,2﹡   

  1. 1Key Laboratory of Intelligent Organic Tea Garden Construction in Universities of Yunnan Province,College of Tea Science,Yunnan Agricultural University;2Yunnan Organic Tea Industry Intelligent Engineering Research Center,Yunnan Agricultural University;3National Engineering Research Center for Applied Technology of Agricultural Biodiversity,College of Plant Protection,Yunnan Agricultural University;4College of Mechanical and Electrical Engineering,Yunnan Agricultural University,Kunming 650201,China
  • Online:2024-10-28 Published:2024-10-28

摘要: 香樟是宝贵的芳香植物资源,研究香樟不同部位的挥发性成分可为进一步提取和筛选香樟天然活性物质提供依据。本研究以香樟的鲜叶和鲜果为材料,利用顶空固相微萃取-气质联用技术(HS-SPME-GC-MS)进行广泛靶向代谢组学分析。叶片和果实共检测出1 158种次生代谢产物,包括萜类、酯、杂环化合物、烃类、酮、醛等16类,其中萜类、酯和杂环化合物三类次生代谢产物占比最高。通过PCA和聚类分析发现,叶片与果实相比,存在141种差异代谢产物上调和417种下调。KEGG富集分析发现,叶片与果实的差异代谢物主要涉及倍半萜类和三萜类生物合成、单萜类生物合成、苯丙烷类生物合成等途径。萜类在叶片的相对含量占比达到92.33%,果实中的相对含量占比达到82.73%,是香樟中主要的挥发性成分,也是重要的药理活性物质。研究结果表明香樟叶片和果实挥发性次生代谢物的种类和含量差异较大,本研究可为香樟叶片和果实资源的精细开发和利用提供理论依据。

关键词: 香樟, 挥发性成分, 代谢组学, 活性物质

Abstract:

Cinnamomum camphor is a valuable aromatic plant resource.Studying the volatile components of different parts of C. camphor can provide a basis for further extraction and screening of natural active substances.In this study,fresh leaves and fruits of C. camphor were used as materials,and the headspace solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) was used for broad targeted metabolomics analysis.A total of 1 158 secondary metabolites were detected in leaves and fruits,including 16 categories,such as terpenes,esters,heterocyclic compounds,hydrocarbons,ketones and aldehydes,among which terpenes,esters and heterocyclic compounds accounted for the highest proportion of secondary metabolites.PCA and cluster analysis showed that compared with the fruits,there were 141 up-regulated metabolites and 417 down-regulated metabolites.KEGG enrichment analysis showed that the differential metabolites of leaves and fruits mainly involved in the biosynthesis of sesquiterpene and triterpenes,monoterpenes,phenylpropanoids and other pathways.The terpenes were the main volatile components in C. camphor while the relative contents of terpenes in leaves and in fruits accounted for 92.33% and 82.73%,respectively.The results revealed the categories and relative content of secondary metabolites in leaves and fruits of C. camphor were quite different.This study provided a theoretical guidance for the fine exploitation and utilization of leaves and fruits of C. camphor.

Key words: Cinnamomum camphora, volatile component, metabolomics, active substances

中图分类号:  S792.23