胡静脉黄色病毒P0蛋白触发NbHERC3,NbBax和NbCRR介导的过敏反应
Xian OuYang1, Lishuang Wang2, Xiangwen Luo3
1Plant Protection College of Hunan Agricultural University, Changsha, China.
Journal of basic microbiology
|April 1, 2024
概括
胡静脉黄色病毒 (PeVYV) P0蛋白诱导植物细胞死亡. 这项研究揭示了PeVYV P0调节酸 (SA) 和莉酸 (JA) 途径,识别了参与P0驱动性亡的宿主蛋白质.
科学领域:
- 植物病理学 植物病理学
- 分子植物-病毒相互作用
- 宿主-病原体相互作用
背景情况:
- 胡静脉黄色病毒 (PeVYV) P0蛋白质是诱导宿主植物过敏反应 (HR) 的关键毒性因素.
- 引起PeVYV P0的HR和相关宿主基因表达的分子机制在很大程度上仍未被描述.
研究的目的:
- 研究由PeVYV P0蛋白调节的宿主基因表达模式和途径.
- 阐明PeVYV P0介导的致病性和宿主细胞死亡的分子机制.
主要方法:
- 转录组分析以确定对PeVYV P0.0的反应中差异表达的基因 (DEGs).
- 逆转录定量聚合酶链反应 (RT-qPCR) 用于基因表达的验证.
- 超高性能液体色谱-并联质谱 (UHPLC-MS/MS) 用于量化植物激素水平.
- 病毒基因沉默,以表征尼科蒂亚纳塔米亚纳的候选宿主蛋白的功能.
主要成果:
- 确定了12638个DEG,其中6784个是上调的,5854个是下调的.
- PeVYV P0上调酸 (SA) 和酸 (JA) 合成基因,同时降低乙烯合成基因的调节.
- 证实SA和JA生物合成是由P0蛋白诱导的.
- 降低NbHERC3的调节加速了细胞亡,而NbCRR减少了细胞死亡,NbBax诱导了亡和叶子卷曲.
结论:
- PeVYV P0蛋白调节宿主激素通路,特别是SA和JA,有助于其致病性.
- 主体蛋白质NbHERC3,NbCRR和NbBax在P0蛋白诱导的细胞死亡和植物防御反应中起着关键作用.
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