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<p>Here, we isolated two novel mycoviruses coinfecting the fugus <i>Colletotrichum karstii</i>, which were designated as "Colletotrichum karstii mitovirus 1" (CkMV1) and "Colletotrichum karstii mitovirus 2" (CkMV2). The length of the complete genome of CkMV1 is 2,441 nucleotides, and that of CkMV2 is 2,391 nucleotides. Both contain a single open reading frame (ORF) that encodes an RNA-dependent RNA polymerase (RdRp). BLAST searches showed that the amino acids (aa) sequences of CkMV1 and CkMV2 had the highest amino acid sequence identity of 35.41% and 52.37% to the RdRp of Pleurotus pulmonarius duamitovirus 1 and Fusarium oxysporum f. sp. cubense mitovirus 4, respectively. Phylogenetic analysis based on RdRp sequences revealed that CkMV1 grouped with members of the genus <i>Duamitovirus</i> and that CkMV2 grouped with members of the genus <i>Unuamitovirus</i>, both within the family <i>Mitoviridae</i>.</p>

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Two novel mitoviruses coinfecting the fungus Colletotrichum karstii

  • 期刊论文

  • 发表日期：

    2025年4月11日

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  • Wei Zhang,
  • Jie Zhong,
  • Jun Zi Zhu,
  • Yi Chen,
  • Ya Rong Wang

摘要

Here, we isolated two novel mycoviruses coinfecting the fugus Colletotrichum karstii, which were designated as "Colletotrichum karstii mitovirus 1" (CkMV1) and "Colletotrichum karstii mitovirus 2" (CkMV2). The length of the complete genome of CkMV1 is 2,441 nucleotides, and that of CkMV2 is 2,391 nucleotides. Both contain a single open reading frame (ORF) that encodes an RNA-dependent RNA polymerase (RdRp). BLAST searches showed that the amino acids (aa) sequences of CkMV1 and CkMV2 had the highest amino acid sequence identity of 35.41% and 52.37% to the RdRp of Pleurotus pulmonarius duamitovirus 1 and Fusarium oxysporum f. sp. cubense mitovirus 4, respectively. Phylogenetic analysis based on RdRp sequences revealed that CkMV1 grouped with members of the genus Duamitovirus and that CkMV2 grouped with members of the genus Unuamitovirus, both within the family Mitoviridae.