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宿主特异性适应驱动了黄条纹病毒和Allium植物的共同进化

Shusuke Kawakubo¹, Hangil Kim¹, Minoru Takeshita²

¹Research Faculty of Agriculture, Hokkaido University , Sapporo, Japan.

Microbiology spectrum

|September 14, 2023

概括

黄条纹病毒 (LYSV) 在Allium植物中显示宿主特异性进化,通过RNA沉默抑制剂 (RSS) 活动适应. 这种病毒宿主适应是由与Allium物种共同进化的驱动.

科学领域:

病毒学病毒学
植物病理学植物病理学
进化生物学进化生物学

背景情况:

宿主适应是病毒进化的关键,涉及宿主RNA沉默和病毒RNA沉默抑制剂 (RSS) 之间的持续战斗.
黄条纹病毒 (LYSV) 是一种病毒,感染了包括大在内的各种Allium物种,造成了显著的产量损失.

研究的目的:

研究LYSV在对其Allium宿主反应中的宿主适应性进化.
了解病毒RSS活动在LYSV主机特定适应中的作用.

主要方法:

贝叶斯族遗传学比较方法被用来分析LYSV进化.
使用功能性测试来评估LYSV蛋白质 (P1和HC-Pro) 的RNA沉默抑制剂 (RSS) 活性.
病毒积累水平在不同的Allium物种中进行了比较.

主要成果:

遗传学分析揭示了一个与分离物分开的,适应Allium ampeloprasum复合体 (AAC) 的独特LYSV类.
在中LYSV的积累水平很低,表明了适应,而在其他Allium物种如大中则很丰富.
在中观察到LYSV的P1和HC-Pro蛋白之间的协同RSS活性,这表明它在宿主特定适应中的作用.

结论:

LYSV已经经历了宿主特定的进化,特别是在中,由与其Allium宿主共同进化的驱动.
病毒RSS活动,特别是P1和HC-Pro之间的协同作用,对于LYSV的宿主特定适应至关重要.
LYSV作为研究宿主适应性进化和病毒宿主共同进化的模型.

关键词:

贝叶斯学派 (Bayesian phylogeny) 是一个贝叶斯学派.抑制RNA沉默抑制剂的RNA沉默抑制剂宿主适应宿主适应黄黄色条纹病毒病毒病毒与宿主共同进化

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