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<p>In this investigation, we identified a novel mitovirus from the phytopathogenic fungus <i>Colletotrichum camelliae</i> strain HNCS-Cc7 and named it “Colletotrichum camelliae mitovirus 1” (CcMV1). Whole-genome sequencing revealed that CcMV1 has 2,650 nucleotides with an A + U content of 62%. The CcMV1 genome contains a single open reading frame (ORF) that encodes an RNA-dependent RNA polymerase (RdRP) of 756 amino acids with a molecular mass of 84.67 kDa. Using a BLASTp search, the CcMV1-RdRp demonstrated the closest sequence similarity to Sclerotinia nivalis mitovirus 2 (61.55%), Sclerotinia sclerotiorum mitovirus 3 (62.03%), and Botrytis cinerea mitovirus 7 (61.60%). Phylogenetic analysis suggested that CcMV1 is a new member of the genus <i>Duamitovirus</i> of the family <i>Mitoviridae</i>. To our knowledge, this is the first report of a mitovirus infecting <i>C. camelliae.</i></p>

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Molecular characterization of a novel mitovirus infecting the phytopathogenic fungus Colletotrichum camelliae

  • 期刊论文

  • 发表日期：

    2025年7月11日

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  • Hao Zeng,
  • Bin Tian,
  • Liangxuan Qu,
  • Fuyin He,
  • Wei Huang,
  • Shuanglong Wang,
  • Hong Liu,
  • Lihong Cui

摘要

In this investigation, we identified a novel mitovirus from the phytopathogenic fungus Colletotrichum camelliae strain HNCS-Cc7 and named it “Colletotrichum camelliae mitovirus 1” (CcMV1). Whole-genome sequencing revealed that CcMV1 has 2,650 nucleotides with an A + U content of 62%. The CcMV1 genome contains a single open reading frame (ORF) that encodes an RNA-dependent RNA polymerase (RdRP) of 756 amino acids with a molecular mass of 84.67 kDa. Using a BLASTp search, the CcMV1-RdRp demonstrated the closest sequence similarity to Sclerotinia nivalis mitovirus 2 (61.55%), Sclerotinia sclerotiorum mitovirus 3 (62.03%), and Botrytis cinerea mitovirus 7 (61.60%). Phylogenetic analysis suggested that CcMV1 is a new member of the genus Duamitovirus of the family Mitoviridae. To our knowledge, this is the first report of a mitovirus infecting C. camelliae.