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首页> 外文期刊>Archives of Virology >Description of a new putative virus infecting the conifer pathogenic fungus Heterobasidion parviporum with resemblance to Heterobasidion annosum P-type partitivirus
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Description of a new putative virus infecting the conifer pathogenic fungus Heterobasidion parviporum with resemblance to Heterobasidion annosum P-type partitivirus

机译：描述一种新的推定病毒，该病毒可感染针叶树病原性真菌细小异花异形小孢子虫，类似于奇异异花异形P型partitivirus

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摘要

The complete sequences of two double-stranded RNA segments from the fungus Heterobasidion parviporum were characterized. The larger segment (2,290 bp) contained an open reading frame encoding a putative RNA-dependent RNA polymerase (RdRp, 722 aa), while the smaller one (2,238 bp) encoded a putative coat protein of 659 aa. Based on phylogenetic analysis, the dsRNA segments constitute the genome of a new virus assigned to the family Partitiviridae and named Heterobasidion RNA virus 2 (HetRV2). The RdRp segment was clearly related to H. annosum P-type partitivirus (aa similarity of 59%) but was only distantly related to previously described viruses of H. parviporum (aa similarity 26–35%). The dsRNA could be experimentally transmitted to all five species of the Heterobasidion annosum sensu lato complex and two species of the H. insulare complex, indicating that horizontal transfer between these intersterile fungal species is possible.
机译：表征了来自真菌小杂种异位孢子的两个双链RNA片段的完整序列。较大的区段（2,290 bp）包含一个开放阅读框，编码一个假定的依赖于RNA的RNA聚合酶（RdRp，722 aa），而较小的区段（2,238 bp）则编码一个659 aa的外壳蛋白。基于系统发育分析，dsRNA片段构成了一种新病毒的基因组，该新病毒被分配给Partitiviridae家族，并命名为异源核糖核酸RNA病毒2（HetRV2）。 RdRp片段与H. annosum P型partitivirus明显相关（aa相似度为59％），但仅与先前描述的H. parviporum病毒（aa相似度为26-35％）远相关。 dsRNA可以通过实验传递给所有5种杂种优势种和ins.H. insulare复合体，表明这些不育真菌物种之间的水平转移是可能的。

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