ArticleVirology journal2025
Molecular characterization of four novel mycoviruses in entomopathogenic and nematophagous fungi.
Article in Virology journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- The origins and evolution of the RNA virome in land flora.Molecular plant · 2026Article
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7 authors.
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Abstract
backgroundResearch on fungal viruses has predominantly focused on phytopathogenic fungi, with some studies elucidating their roles in modulating fungal virulence and influencing plant-fungus interactions. In contrast, mycoviruses harbored by entomopathogenic and nematophagous fungi have received significantly less attention.
methodsEleven transcriptome datasets were de novo assembled and annotated using Diamond against the NCBI non-redundant protein database. Viral sequences, potential open reading frames (ORFs), and deduced amino acid sequences were analyzed using DNAMAN. Phylogenetic analysis was conducted based on the amino acid sequences.
resultsThis study characterized four mycoviruses from Hirsutella satumaensis, Ophiocordyceps sinensis, and Orbilia oligospora. Based on BLASTp analysis, the amino acid sequences of these viral genomes showed 50% to 98% identity to those of known viruses. Detailed sequence analysis revealed that Hirsutella satumaensis botourmiavirus 1 (HsBV1), Ophiocordyceps sinensis mitovirus 4 (OsMV4), Orbilia oligospora negative-strand RNA virus 1 (OoNSV1), and Orbilia oligospora narnavirus 1 (OoNV1) contained nearly complete genomes. Each virus featured a single open reading frame (ORF) encoding a putative RNA-dependent RNA polymerase (RdRp) with a conserved GDD motif. Additionally, their variable 3' untranslated regions (3'-UTRs) and 5'-UTRs were predicted to form stable stem-loop secondary structures, which may play roles in viral replication or stability. Phylogenetic analysis indicated that these mycoviruses belong to the families Aspiviridae, Botourmiaviridae, Mitoviridae, and Narnaviridae.
conclusionsThese findings expand our understanding of mycoviral diversity in nematophagous and entomopathogenic fungi. Further research is needed to explore whether these mycoviruses influence fungal interactions with insects or nematodes, which may uncover novel ecological and functional roles.
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