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<p>Here, we report the isolation of a novel mycovirus from <i>Phomopsis asparagi</i> strain XJ5. The viral genome consists of a positive-sense, single-stranded RNA (+ ssRNA) molecule that is 2,657 nucleotides (nt) in length and has a GC content of 42%. It contains a single open reading frame (ORF) encoding a putative protein of 731 amino acids, with a predicted molecular mass of 83.0 kDa. A BLASTp search showed that the putative protein shared the highest sequence similarity with Fusarium pseudograminearum mitovirus 5 (FpgMV5), exhibiting 55.84% sequence identity. Phylogenetic analysis revealed that this mycovirus clusters with members of the genus <i>Unuamitovirus</i>, belonging to the family <i>Mitoviridae</i>. Based on these findings, we propose to designate this virus as "Phomopsis asparagi mitovirus 1" (PhaMV1).</p>

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Complete genome sequence of a novel mitovirus isolated from the fungus Phomopsis asparagi

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Yufang Zhang,
  • Zhibiao Wang,
  • Jinyu Yang,
  • Yinhui Sun,
  • Li Zheng,
  • Daipeng Chen

摘要

Here, we report the isolation of a novel mycovirus from Phomopsis asparagi strain XJ5. The viral genome consists of a positive-sense, single-stranded RNA (+ ssRNA) molecule that is 2,657 nucleotides (nt) in length and has a GC content of 42%. It contains a single open reading frame (ORF) encoding a putative protein of 731 amino acids, with a predicted molecular mass of 83.0 kDa. A BLASTp search showed that the putative protein shared the highest sequence similarity with Fusarium pseudograminearum mitovirus 5 (FpgMV5), exhibiting 55.84% sequence identity. Phylogenetic analysis revealed that this mycovirus clusters with members of the genus Unuamitovirus, belonging to the family Mitoviridae. Based on these findings, we propose to designate this virus as "Phomopsis asparagi mitovirus 1" (PhaMV1).