一种与行走虹膜 (Trimezia northiana) 相关的新型线粒病毒的完整基因组序列
Robert Alvarez-Quinto1, Samuel Grinstead2,3, Richard Jones4
1Department of Botany and Plant Pathology, Oregon State University, Cordley Hall, 2701 SW Campus Way, Corvallis, OR, 97333, USA.
Archives of virology
|October 16, 2023
概括
研究人员在行走虹膜植物中发现了一种新病毒,即行走虹膜病毒1 (WIV1). 这标志着在单虫中发现的第一个米托病毒,扩大了我们对植物病毒的理解.
科学领域:
- 植物病毒学 植物病毒学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 米托病毒是属于米托病毒家族的非细分,正义单链RNA病毒.
- 众所周知,这些病毒会感染各种生物,包括真菌和植物,但它们在单植物中的多样性仍未得到充分探索.
研究的目的:
- 在行走的虹膜 (Trimezia northiana) 中发现了一种新型的线粒病毒的特征.
- 确定这种新病毒的基因组特征和遗传学关系.
主要方法:
- 使用高通量测序,从受感染的行走虹膜植物中获得病毒的完整基因组序列.
- 进行了生物信息分析,包括开放阅读框架 (ORF) 预测,蛋白质域识别和家族遗传推断.
主要成果:
- 新型米托病毒的完整基因组,暂时命名为行走虹膜病毒1 (WIV1),被测序. 它的长度为2,858个核酸,并且包含一个单个ORF编码RNA依赖RNA聚合酶 (RdRp).
- WIV1与Beta vulgaris mitovirus 1共享了最高的氨基酸序列相同性 (45%),与Beta vulgaris mitovirus 1相同. 鉴定了米托病毒RdRp特征的保存域和动图.
- 遗传学分析将WIV1置于Duamitovirus属内,与其他植物线粒病毒组成一个单体群.
结论:
- 步行虹膜病毒1 (WIV1) 是第一个在单状植物物种中发现的线粒病毒.
- 基因组和遗传学数据支持将WIV1分类为Duamitovirus (Mitoviridae家族) 属中的新物种.
- 这一发现扩大了植物王国中已知的宿主范围和线粒病毒的遗传多样性.
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