Transcriptomic and metabolomic analyses reveals keys genes and metabolic pathways in tea (Camellia sinensis) against six-spotted spider mite (Eotetranychus Sexmaculatus)
文献类型： 外文期刊
作者： Wang, Xiaoping 1 ; Xiang, Yunjia 2 ; Sun, Minshan 3 ; Xiong, Yuanyuan 1 ; Li, Chunhua 1 ; Zhang, Ting 1 ; Ma, Weiwei 1 ; Wang, Yun 1 ; Liu, Xiao 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Tea Res Inst, Tea Refining & Innovat Key Lab Sichuan Prov, Chengdu, Peoples R China
2.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu, Peoples R China
3.Henan Assist Res Biotechnol Co Ltd, Zhengzhou, Peoples R China
关键词： Tea plant; Spider mite; Transcriptome; Metabolome; Plant-insect interaction
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： Background Six-spotted spider mite (Eotetranychus sexmaculatus) is one of the most damaging pests of tea (Camellia sinensis). E. sexmaculatus causes great economic loss and affects tea quality adversely. In response to pests, such as spider mites, tea plants have evolved resistance mechanisms, such as expression of defense-related genes and defense-related metabolites.Results To evaluate the biochemical and molecular mechanisms of resistance in C. sinensis against spider mites, "Tianfu-5" (resistant to E. sexmaculatus) and "Fuding Dabai" (susceptible to E. sexmaculatus) were inoculated with spider mites. Transcriptomics and metabolomics based on RNA-Seq and liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) technology were used to analyze changes in gene expression and metabolite content, respectively.RNA-Seq data analysis revealed that 246 to 3,986 differentially expressed genes (DEGs) were identified in multiple compared groups, and these DEGs were significantly enriched in various pathways, such as phenylpropanoid and flavonoid biosynthesis, plant-pathogen interactions, MAPK signaling, and plant hormone signaling. Additionally, the metabolome data detected 2,220 metabolites, with 194 to 260 differentially abundant metabolites (DAMs) identified in multiple compared groups, including phenylalanine, lignin, salicylic acid, and jasmonic acid. The combined analysis of RNA-Seq and metabolomic data indicated that phenylpropanoid and flavonoid biosynthesis, MAPK signaling, and Ca2+-mediated PR-1 signaling pathways may contribute to spider mite resistance.Conclusions Our findings provide insights for identifying insect-induced genes and metabolites and form a basis for studies on mechanisms of host defense against spider mites in C. sinensis. The candidate genes and metabolites identified will be a valuable resource for tea breeding in response to biotic stress.
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