Quadriviridae

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Quadrivirus
(Left) Electron micrographs of the Rosellinia necatrix quadrivirus 1 Bar, 50 nm. (Right) Three-dimensional cryo-electron microscopy reconstruction of RnQV1 virions at 8Å resolution.
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Duplornaviricota
Class: Chrymotiviricetes
Order: Ghabrivirales
Family: Quadriviridae
Genus: Quadrivirus

Quadriviridae is a family of double-stranded RNA viruses with a single genus Quadrivirus.[1] Fungi serve as natural hosts. There is currently only one species in this family: the type species Rosellinia necatrix quadrivirus 1.[2][3]

Structure

Viruses in the family Quadriviridae have a non-enveloped isometric capsid. The diameter is around 48 nm.

Genome

Genome of Rosellinia necatrix quadrivirus 1

Family member genomes are linear and made of double stranded RNA. They are divided in to four segments which each code for a protein. The length of the different segments are between 3.5 to 5.0 kbp. The total genome is around 16.8 kbp.[2][3]

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. Fungi serve as the natural host.[2][3]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Quadrivirus Fungi None Unknown Cytoplasmic exchange; hyphal anastomosis; sporogenesis Unknown Unknown Cytoplasmic exchange; hyphal anastomosis; sporogenesis

Taxonomy

Phylogenetic tree of quadriviruses, chrysoviruses and some totiviruses

The family Quadrivirdae has one genus Quadrivirus which contains the species:

  • Rosellinia necatrix quadrivirus 1

References

  1. ^ Chiba, S; Castón, JR; Ghabrial, SA; Suzuki, N; Ictv Report, Consortium (November 2018). "ICTV Virus Taxonomy Profile: Quadriviridae". The Journal of General Virology. 99 (11): 1480–1481. doi:10.1099/jgv.0.001152. PMID 30265238.
  2. ^ a b c "ICTV Report Quadriviridae".
  3. ^ a b c "Viral Zone". ExPASy. Retrieved 13 August 2015.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Quadriviridae&oldid=982455240"