Quadriviridae: Difference between revisions
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| taxon = Quadrivirus
| image = ODR.Quadri.fig1.png
| image_caption = (Left) [[Electron micrograph]]s of the Rosellinia necatrix quadrivirus 1
| type_species = ''[[Rosellinia necatrix quadrivirus 1]]''▼
}}
'''''Quadriviridae''''' is a family of [[double-stranded RNA viruses]] with a single genus '''''Quadrivirus'''''.<ref>{{cite journal |last1=Chiba |first1=S |last2=Castón |first2=JR |last3=Ghabrial |first3=SA |last4=Suzuki |first4=N |last5=Ictv Report |first5=Consortium |title=ICTV Virus Taxonomy Profile: Quadriviridae. |journal=The Journal of General Virology |date=November 2018 |volume=99 |issue=11 |pages=
==Structure==
[[
[[Mycovirus]]es in the family ''Quadriviridae'' have a [[Virus#Structure|non-enveloped]] isometric [[capsid]] which consists of 60 copies of heterodimers of the structural proteins P2 and P4. The diameter of the capsid is around 48 nm.<ref name="ICTV" /><ref name="ViralZone" /> ==Genome==
[[File:ODR.Quadri.fig3.v4.png|thumb|Genome of Rosellinia necatrix quadrivirus 1 ]]
Family member [[Virus#Genome|genomes]] are composed 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
▲Family member [[Virus#Genome|genomes]] are composed 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. Inside the capsid with the genome there is also the [[RNA-dependent RNA polymerase|RNA-dependent RNA polymerse]].<ref name=ICTV /><ref name=ViralZone/>
==Life cycle==
Quadriviruses are transmitted internally. They are propagated during cell division and [[
==Taxonomy==
[[File:ODR.Quadri.Fig4.png-640x480.png|thumb|Phylogenetic tree of quadriviruses, chrysoviruses and some [[Totiviridae|totiviruses]]]]
The family ''Quadrivirdae'' has one genus ''Quadrivirus'' which contains the species:<ref>{{cite web |title=Virus Taxonomy: 2020 Release |url=https://ictv.global/taxonomy |publisher=International Committee on Taxonomy of Viruses (ICTV) |date=March 2021 |access-date=13 May 2021}}</ref>
==References==
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Latest revision as of 18:30, 25 July 2023
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 | |
(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] The fungi Rosellinia necatrix serves as a natural host. The name of the group derives from the quadripartite genome of its members where in Latin quad means four. There is only one species in this family: Rosellinia necatrix quadrivirus 1.[2][3]
Structure[edit]
Mycoviruses in the family Quadriviridae have a non-enveloped isometric capsid which consists of 60 copies of heterodimers of the structural proteins P2 and P4. The diameter of the capsid is around 48 nm.[2][3]
Genome[edit]
Family member genomes are composed 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 and 5.0 kbp. The total genome is around 16.8 kbp. Inside the capsid with the genome there is also the RNA-dependent RNA polymerase.[2][3]
Life cycle[edit]
Quadriviruses are transmitted internally. They are propagated during cell division and hyphal anastomosis. Viral replication occurs in the cytoplasm. It follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The fungi Rosellinia necatrix serves as a natural host.[2][3]
Taxonomy[edit]
The family Quadrivirdae has one genus Quadrivirus which contains the species:[4]
- Rosellinia necatrix quadrivirus 1
References[edit]
- ^ 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.
- ^ a b c d "ICTV Report Quadriviridae".
- ^ a b c d e "Viral Zone". ExPASy. Retrieved 13 August 2015.
- ^ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 13 May 2021.