A novel mycovirus isolated from the plant-pathogenic fungus Alternaria dianthicola

Arch Virol. 2020 Sep;165(9):2105-2109. doi: 10.1007/s00705-020-04700-9. Epub 2020 Jun 18.

Abstract

Here, we describe the molecular characterization of a novel mycovirus isolated from a phytopathogenic fungus, Alternaria dianthicola, which we have named "Alternaria dianthicola dsRNA virus 1" (AdRV1). AdRV1 has a genome of 3,014 bp that contains two non-overlapping open reading frames (ORF1 and 2) coding for a hypothetical protein and an RNA-dependent RNA polymerase (RdRp), respectively. Based on the RdRp, AdRV1 is phylogenetically related to some unclassified dsRNA mycoviruses, including Alternaria longipes dsRNA virus 1, and shows a distant relationship to members of the family Partitiviridae. To the best of our knowledge, this is the first report of mycovirus infecting A. dianthicola.

MeSH terms

  • Alternaria / genetics
  • Alternaria / physiology
  • Alternaria / virology*
  • Amino Acid Sequence
  • Fungal Viruses / classification
  • Fungal Viruses / genetics
  • Fungal Viruses / isolation & purification*
  • Genome, Viral
  • Open Reading Frames
  • Phylogeny
  • Plant Diseases / microbiology*
  • RNA Viruses / classification
  • RNA Viruses / genetics
  • RNA Viruses / isolation & purification*
  • RNA-Dependent RNA Polymerase / chemistry
  • RNA-Dependent RNA Polymerase / genetics
  • RNA-Dependent RNA Polymerase / metabolism
  • Sequence Alignment
  • Viral Proteins / chemistry
  • Viral Proteins / genetics
  • Viral Proteins / metabolism

Substances

  • Viral Proteins
  • RNA-Dependent RNA Polymerase