Transcriptomic analyses reveal the expression and regulation of genes associated with resistance to early leaf spot in peanut

文献类型： 外文期刊

第一作者： Gong, Limin

作者： Gong, Limin;He, Guohao;Han, Suoyi;Yuan, Mei;Ma, Xingli;Hagan, Austin

作者机构：

关键词： Defense response; Differentially expressed gene; Gene regulation; RNA-seq; Transcriptome

期刊名称：BMC RESEARCH NOTES （ 影响因子：1.8； 五年影响因子：4.0 ）

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年卷期： 2020 年 13 卷 1 期

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收录情况： SCI

摘要： Objective Early leaf spot (ELS) caused byCercospora arachidicola(Hori) is a serious foliar disease in peanut worldwide, which causes considerable reduction of yield. Identification of resistance genes is important for both conventional and molecular breeding. Few resistance genes have been identified and the mechanism of defense responses to this pathogen remains unknown. Results We detected several genes involved in disease resistance to ELS through transcriptome analysis. Using RNA-seq technology, one hundred thirty-three differentially expressed genes (DEGs) were identified between resistant and susceptible lines. Among these DEGs, coiled coil-nucleotide binding-leucine rich repeat (NLR) type resistance genes were identified as duplicated R genes on the chromosome B2. Peanut phytoalexin deficient 4 (PAD4) regulator of effector-triggered immunity mediated by NLR resistance proteins and polyphenol oxidase (PPO) genes play important roles in early leaf spot resistance. Our study provides the useful information on plant response toC. arachidicolainfection in peanut. The results suggest that a few major genes and several factors mediate the resistance to ELS disease, showing the characteristics of quantitative trait in defense responses.

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