生物技术通报 ›› 2025, Vol. 41 ›› Issue (8): 311-321.doi: 10.13560/j.cnki.biotech.bull.1985.2024-1281

• 研究报告 • 上一篇    

转录组和代谢组联合分析三株蜡蚧轮枝菌菌株毒力差异

柴军发1(), 洪波2, 贾彦霞2()   

  1. 1.宁夏农林科学院植物保护研究所,银川 750002
    2.宁夏大学农学院,银川 750021
  • 收稿日期:2024-12-31 出版日期:2025-08-26 发布日期:2025-08-14
  • 通讯作者: 贾彦霞,女,教授,研究方向 :昆虫生态学与害虫综合防治;E-mail: helenjia_2006@126.com
  • 作者简介:柴军发,男,硕士研究生,研究方向 :农业昆虫与害虫防治;E-mail: chaijf920@163.com
  • 基金资助:
    宁夏自然科学基金项目(2023AAC03073)

Combined Transcriptomic and Metabolomic Analysis of Virulence Differences among Three Lecanicillium lecanii Strains

CHAI Jun-fa1(), HONG Bo2, JIA Yan-xia2()   

  1. 1.Institute of Plant Protection, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002
    2.School of Agricultural, Ningxia University, Yinchuan 750021
  • Received:2024-12-31 Published:2025-08-26 Online:2025-08-14

摘要:

目的 研究蜡蚧轮枝菌(Lecanicillium lecanii)不同菌株的毒力差异,结合转录组学和代谢组学数据分析,筛选蜡蚧轮枝菌(L. lecanii)菌株毒力的关键性差异表达基因(DEGs)及次级代谢产物(DEMs)。 方法 采用RNA-seq和LC-MS/MS技术,对培养8 d和液体发酵8 d的3株蜡蚧轮枝菌的基因表达和次级代谢产物进行检测,同时对差异基因进行RT-qPCR验证。 结果 室内毒力结果表明,J-1次级代谢产物对桃蚜的毒力最好,与J-2和V-1存在极显著差异。转录组和代谢组结果表明,J-1_vs_J-2获得225个DEGs和59种DEMs,J-1_vs_V-1获得2 464个DEGs和75种DEMs。差异基因与差异代谢物经KEGG富集分析,主要富集在苯丙氨酸代谢、酪氨酸代谢及ABC转运蛋白中,得到79个DEGs和19种DEMs,高毒力菌株与低毒力菌株间,水杨酸、3-羟基苯乙酸、苯乳酸、马尿酸和Methyl beta-D-galactoside显著上调,去甲肾上腺素极显著下调,c75905.graph_c0、c78027.graph_c0、c77968.graph_c0、c78586.graph_c1、c74779.graph_c0和c78871.graph_c0显著上调。RT-qPCR结果表明,关键差异基因与转录组中表达趋势一致。 结论 转录组和代谢组联合分析发现可能参与调控蜡蚧轮枝菌菌株毒力的6个关键基因和6个显著富集差异代谢物,为构建高毒力菌株提供依据。

关键词: 蜡蚧轮枝菌, 转录组, 代谢组, 毒力

Abstract:

Objective To study the virulence differences among various strains of Lecanicillium lecanii, and to identify key differentially expressed genes (DEGs) and differential secondary metabolites (DEMs) associated with strain virulence through integrated transcriptomic and metabolomic data analyses. Method RNA-seq and LC-MS/MS techniques were used to detect the gene expression and secondary metabolites of three L. lecanii strains cultured for 8 d and liquid fermentation for 8 d, and the differential genes were verified by RT-qPCR. Result Indoor virulence results showed that J-1 secondary metabolites were the most virulent against Myzus persicae, with highly significant differences from J-2 and V-1. Transcriptome and metabolome results: 225 DEGs and 59 DEMs were obtained for J-1_vs_J-2, 2464 DEGs and 75 DEMs were obtained for J-1_vs_V-1. Differential genes and differential metabolites were enriched by KEGG analysis, mainly in phenylalanine metabolism, tyrosine metabolism and ABC transporter protein, 79 DEGs and 19 DEMs, salicylic acid, 3-hydroxyphenylacetic acid, phenyllactic acid, hippuric acid, and methyl beta-D-galactoside were significantly up-regulated and norepinephrine was highly significantly down-regulated between high and low virulence strains. c75905.graph_c0,c78027.graph_c0,c77968.graph_c0, c78586.graph_c1, c74779.graph_c0, and c78871.graph_c0 were significantly up-regulated. RT-qPCR results showed that the key differential genes were consistent with the expression trends in the transcriptome. Conclusion Six key genes and six significantly enriched differential metabolites that may be involved in regulating the virulence of L. lecanii strains are found by combined transcriptome and metabolome analysis, which may provide a basis for the construction of highly virulent strains.

Key words: Lecanicillium lecanii, transcriptomic, metabolomic, virulence