在宿主真菌群体中,持久RNA病毒的等离子体样动态
Yuto Chiba1,2, Seiyo Watanabe1, Ayano Ikeda1
1Laboratory of Fungal Interaction and Molecular Biology (donated by IFO), Department of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Journal of virology
|July 31, 2025
概括
大多数真菌RNA病毒 (RNA菌病毒) 在宿主中持续存在,没有细胞外感染. 这项研究揭示了它们的传播动态类似于等离子体,影响真菌适应环境变化.
科学领域:
- 菌类学 菌类学是指菌类学.
- 病毒学 病毒学
- 生态生态学 生态生态学
背景情况:
- 大多数真菌RNA病毒 (RNA菌病毒) 具有持久的生命周期,缺乏细胞外感染路径,并与宿主一生共存.
- 这些病毒广泛传播,影响真菌性质,在很大比例的分离物中发现,表明生态系统的持久性很高.
- 宿主群体内的RNA菌病毒的动态和维护机制尚未得到充分理解.
研究的目的:
- 开发一个实验室模型系统来研究在克隆宿主群体内的真菌病毒的动态.
- 为了澄清驱动RNA真菌病毒动态和流行率变化的机制.
- 研究真菌病毒在真菌适应不断变化的环境中的作用.
主要方法:
- 建立了一个实验系统,使用两个感染Aspergillus fumigatus的RNA真菌病毒.
- 在不同的环境条件下监测病毒的流行情况,包括温度和真菌杀菌剂暴露.
- 通过hyphal fusion分析病毒水平传播,病毒损失和宿主生长影响.
主要成果:
- 病毒患病率因温度和真菌杀菌剂暴露等环境条件而显著变化.
- 患病率变化的关键驱动因素包括异构菌株之间的横向传播通过菌融合,病毒损失和对宿主生长的影响.
- 发现RNA菌病毒的动态类似于细菌群体中的等离子体动态.
结论:
- RNA菌病毒的动态受环境因素的影响,类似于细菌中的等离子体遗传.
- 菌类病毒可以作为一个切换因素,使真菌能够适应不断变化的环境.
- 这项研究揭示了非经典的病毒生活方式,强调了超越细胞外感染的传播和维护机制.
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