Transcriptional Comparison Reveals Differential Resistance Mechanisms between CMV-Resistant PBC688 and CMV-Susceptible G29

文献类型： 外文期刊

第一作者： Guo, Guangjun

作者： Guo, Guangjun;Pan, Baogui;Gong, Chengsheng;Wang, Shubin;Liu, Jinbing;Gao, Changzhou;Diao, Weiping

作者机构：

关键词： pepper; Cucumber mosaic virus; transcriptome analysis; resistance mechanisms

期刊名称：GENES （ 影响因子：2.8； 五年影响因子：3.3 ）

ISSN：

年卷期： 2024 年 15 卷 6 期

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收录情况： SCI

摘要： The Cucumber mosaic virus (CMV) presents a significant threat to pepper cultivation worldwide, leading to substantial yield losses. We conducted a transcriptional comparative study between CMV-resistant (PBC688) and -susceptible (G29) pepper accessions to understand the mechanisms of CMV resistance. PBC688 effectively suppressed CMV proliferation and spread, while G29 exhibited higher viral accumulation. A transcriptome analysis revealed substantial differences in gene expressions between the two genotypes, particularly in pathways related to plant-pathogen interactions, MAP kinase, ribosomes, and photosynthesis. In G29, the resistance to CMV involved key genes associated with calcium-binding proteins, pathogenesis-related proteins, and disease resistance. However, in PBC688, the crucial genes contributing to CMV resistance were ribosomal and chlorophyll a-b binding proteins. Hormone signal transduction pathways, such as ethylene (ET) and abscisic acid (ABA), displayed distinct expression patterns, suggesting that CMV resistance in peppers is associated with ET and ABA. These findings deepen our understanding of CMV resistance in peppers, facilitating future research and variety improvement.

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