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Taxonomy01:31

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Plaquing of Herpes Simplex Viruses
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ICTV Virus Taxonomy Profile: Quadriviridae.

Sotaro Chiba1, José R Castón2, Said A Ghabrial3

  • 11​Asian Satellite Campuses Institute, Nagoya University, Nagoya 464-0861, Japan.

The Journal of General Virology
|September 29, 2018
PubMed
Summary

The Quadriviridae family comprises non-enveloped viruses with segmented dsRNA genomes that infect fungi. This report summarizes the taxonomy of this unique viral family.

Keywords:
ICTV ReportQuadriviridaetaxonomy

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Area of Science:

  • Virology
  • Mycology
  • Molecular Biology

Background:

  • The Quadriviridae family is a unique group of viruses characterized by their non-enveloped, spherical structure and quadripartite double-stranded RNA (dsRNA) genomes.
  • The family currently contains a single species, Rosellinia necatrix quadrivirus 1.
  • These viruses exclusively infect filamentous fungi.

Purpose of the Study:

  • To provide a comprehensive summary of the taxonomy of the Quadriviridae family.
  • To detail the genomic and virion characteristics of Quadriviridae.
  • To consolidate current knowledge on Quadriviridae based on the ICTV Report.

Main Methods:

  • Review and summarization of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Quadriviridae.
  • Analysis of genomic data, including dsRNA genome segmentation and size.
  • Description of virion structure and host range.

Main Results:

  • Quadriviridae viruses possess segmented dsRNA genomes (16.8–17.1 kbp total) with four segments each ranging from 3.5–5.0 kbp.
  • Virions are non-enveloped and spherical, exhibiting unique structural features.
  • Infection is limited to filamentous fungi, with no reported pathogenicity.

Conclusions:

  • The Quadriviridae family represents a distinct taxonomic group within viruses.
  • Further research may elucidate the unique biological roles and evolutionary significance of these fungal-infecting viruses.
  • The ICTV Report provides a standardized classification for Quadriviridae.