Quadriviridae: Difference between revisions
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'''''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=1480-1481 |doi=10.1099/jgv.0.001152 |pmid=30265238|doi-access=free }}</ref> The [[fungi]] ''[[Rosellinia necatrix]]'' serves as a natural [[host (biology)|host]]. The name of the group derives from the ''quadri''partite genome of its members where in [[Latin]] ''quad'' means four. There is currently only one species in this family: the [[type species]] ''[[Rosellinia necatrix quadrivirus 1]]''.<ref name="ICTV">{{cite web |title=ICTV Report Quadriviridae |url=http://www.ictv.global/report/quadriviridae}}</ref><ref name="ViralZone">{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/4957.html|publisher=ExPASy| |
'''''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=1480-1481 |doi=10.1099/jgv.0.001152 |pmid=30265238|doi-access=free }}</ref> The [[fungi]] ''[[Rosellinia necatrix]]'' serves as a natural [[host (biology)|host]]. The name of the group derives from the ''quadri''partite genome of its members where in [[Latin]] ''quad'' means four. There is currently only one species in this family: the [[type species]] ''[[Rosellinia necatrix quadrivirus 1]]''.<ref name="ICTV">{{cite web |title=ICTV Report Quadriviridae |url=http://www.ictv.global/report/quadriviridae}}</ref><ref name="ViralZone">{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/4957.html|publisher=ExPASy|access-date=13 August 2015}}</ref> |
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==Structure== |
==Structure== |
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Revision as of 12:33, 5 January 2021
| Quadrivirus | |
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| (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 
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| (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 currently only one species in this family: the type species Rosellinia necatrix quadrivirus 1.[2][3]
Structure
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
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 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 polymerse.[2][3]
Life cycle
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
The family Quadrivirdae has one genus Quadrivirus which contains the species:
- Rosellinia necatrix quadrivirus 1
References
- ^ 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 "Viral Zone". ExPASy. Retrieved 13 August 2015.