Finnish Forest Research Institute, Vantaa Research Unit, Vantaa, Finland.
Arch Virol. 2013 Jul;158(7):1613-5. doi: 10.1007/s00705-013-1643-5. Epub 2013 Mar 2.
The Heterobasidion annosum (Fr.) Bref. complex includes some of the most destructive conifer pathogenic fungi in the Boreal forest region. H. irregulare, formerly known as the North American pine type of H. annosum, was introduced from North America into Italy during the Second World War and occurs as an invasive pathogen in Pinus pinea stands together with the native European species H. annosum sensu stricto. We describe the complete nucleotide sequence of a new putative partitivirus from an Italian strain of H. irregulare. The bisegmented genome of HetRV8-ir1 encodes an RNA-dependent RNA polymerase of 704 aa and a capsid protein of 638 aa. The polymerase and capsid aa sequences are relatively similar (59-78 %) to those of Fusarium poae virus 1, Pleurotus ostreatus virus 1, and grapevine-associated partitivirus 1. HetRV8-ir1 is the first virus described from H. irregulare, and it is distantly related to previously known partitiviruses of Heterobasidion species.
Heterobasidion annosum (Fr.) Bref. 复合体包含一些在北方森林地区最具破坏性的针叶树病原菌。 Heterobasidion irregulare，以前称为北美松型 H. annosum，于第二次世界大战期间从北美引入意大利，与本地欧洲种 H. annosum sensu stricto 一起成为 Pinus pinea 林分中的入侵病原体。我们描述了一种来自意大利 H. irregulare 菌株的新推定二分体病毒的完整核苷酸序列。HetRV8-ir1 的双节段基因组编码 704 个氨基酸的 RNA 依赖性 RNA 聚合酶和 638 个氨基酸的衣壳蛋白。聚合酶和衣壳 aa 序列与 Fusarium poae virus 1、Pleurotus ostreatus virus 1 和葡萄关联二分体病毒 1 的相对相似（59-78%）。HetRV8-ir1 是从 H. irregulare 中描述的第一个病毒，与先前已知的 Heterobasidion 种的二分体病毒关系较远。
