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<p>A novel single-stranded (+ss) RNA mycovirus, designated as "Magnaporthe oryzae narnavirus 2" (MoNV2), was identified in the rice blast fungus <i>Magnaporthe oryzae</i> isolate NJ471. MoNV2 has an RNA genome of 3,086 nucleotides, which contains a single open reading frame (ORF) that is predicted to encode an RNA-dependent RNA polymerase (RdRp). Genome sequence comparisons and phylogenetic analysis suggested that MoNV2 is a new member of the genus <i>Narnavirus</i> of the family <i>Narnaviridae</i>. The 5' and 3' ends of the MoNV2 genomic RNA are complementary to each other, potentially forming a panhandle structure.</p>

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Complete genome sequence of a novel narnavirus with inverted complementary termini from the rice blast fungus Magnaporthe oryzae isolate NJ471

  • 期刊论文

  • 发表日期：

    2025年6月8日

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  • Cong Li,
  • Yuxin Wu,
  • Xinyi Li,
  • Qingchao Deng,
  • Jiatao Xie

摘要

A novel single-stranded (+ss) RNA mycovirus, designated as "Magnaporthe oryzae narnavirus 2" (MoNV2), was identified in the rice blast fungus Magnaporthe oryzae isolate NJ471. MoNV2 has an RNA genome of 3,086 nucleotides, which contains a single open reading frame (ORF) that is predicted to encode an RNA-dependent RNA polymerase (RdRp). Genome sequence comparisons and phylogenetic analysis suggested that MoNV2 is a new member of the genus Narnavirus of the family Narnaviridae. The 5' and 3' ends of the MoNV2 genomic RNA are complementary to each other, potentially forming a panhandle structure.