Transcriptome analysis provides new insights into the resistance of pepper to Phytophthora capsici infection.

IF 3.5 2区 生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Fengyan Shi, Xiuxue Wang, Meijun Wei, Xi Zhang, Zhidan Wang, Xiaochun Lu, Chunlei Zou
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Abstract

Background: Phytophthora blight is a highly destructive soil-borne disease caused by Phytophthora capsici Leonian, which threatens pepper production. The molecular mechanism of pepper resistance to phytophthora blight is unclear, and the excavation and functional analysis of resistant genes are the bases and prerequisites for phytophthora blight-resistant breeding. We aimed to analyze the expression patterns of key genes in the plant-pathogen interaction metabolic pathway and propose a working model of the pepper defense signal network against Phytophthora capsici infection.

Results: The 'ZCM334' pepper material used in this study is a high-generation inbred line that is immune to Phytophthora capsici and shows no signs of infection after inoculation. Comparative transcriptome analysis of the roots of 'ZCM334' and the susceptible material 'Early Calwonder' revealed significant differences in their gene expression profiles at different stages after inoculation. Most differentially expressed genes were significantly enriched in the biosynthesis of secondary metabolites, phenylpropanoid biosynthesis, plant-pathogen interaction, and fatty acid degradation metabolic pathways. Some defense genes and transcription factors significant in pepper resistance to phytophthora blight were identified, including PR1, RPP13, FLS2, CDPK, CML, MAPK, RLP, RLK, WRYK, ERF, MYB, and bHLH, most of which were regulated after inoculation. A working model was constructed for the defense signal network of pepper against Phytophthora capsici.

Conclusions: These data provide a valuable source of information for improving our understanding of the potential molecular mechanisms by which pepper plants resist infection by Phytophthora capsici. The identification of key genes and metabolic pathways provides avenues for further exploring the immune mechanism of 'ZCM334' resistance to phytophthora blight.

转录组分析为辣椒对辣椒疫霉的抗性研究提供了新的思路。
背景:疫霉疫病是由辣椒疫霉引起的一种极具破坏性的土传病害,严重威胁辣椒生产。辣椒抗疫的分子机制尚不清楚,抗病基因的挖掘和功能分析是进行辣椒抗疫育种的基础和前提。本研究旨在分析植物与病原菌互作代谢途径中关键基因的表达模式,提出辣椒防御辣椒疫霉感染信号网络的工作模型。结果:本研究辣椒材料ZCM334为高代自交系,对辣椒疫霉免疫,接种后无侵染迹象。对ZCM334根和易感材料Early Calwonder根进行转录组比较分析发现,接种后不同时期,ZCM334根和易感材料Early Calwonder根的基因表达谱存在显著差异。大多数差异表达基因在次生代谢物生物合成、苯丙素生物合成、植物-病原体相互作用和脂肪酸降解代谢途径中显著富集。在辣椒抗疫过程中发现了PR1、RPP13、FLS2、CDPK、CML、MAPK、RLP、RLK、WRYK、ERF、MYB和bHLH等防御基因和转录因子,其中大部分在接种后受到调控。建立了辣椒对辣椒疫霉防御信号网络的工作模型。结论:这些数据为进一步了解辣椒植株抵抗辣椒疫霉感染的潜在分子机制提供了有价值的信息来源。关键基因和代谢途径的鉴定为进一步探索‘ZCM334’抗疫疫病的免疫机制提供了途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
BMC Genomics
BMC Genomics 生物-生物工程与应用微生物
CiteScore
7.40
自引率
4.50%
发文量
769
审稿时长
6.4 months
期刊介绍: BMC Genomics is an open access, peer-reviewed journal that considers articles on all aspects of genome-scale analysis, functional genomics, and proteomics. BMC Genomics is part of the BMC series which publishes subject-specific journals focused on the needs of individual research communities across all areas of biology and medicine. We offer an efficient, fair and friendly peer review service, and are committed to publishing all sound science, provided that there is some advance in knowledge presented by the work.
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