Narnavirus: Difference between revisions
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| taxon = Narnavirus |
| taxon = Narnavirus |
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| type_species = ''[[Saccharomyces 20S RNA narnavirus]]''<ref name=ICTV>{{cite web|last1=ICTV|title=Virus Taxonomy: 2014 Release|url=http://ictvonline.org/virusTaxonomy.asp| |
| type_species = ''[[Saccharomyces 20S RNA narnavirus]]''<ref name=ICTV>{{cite web|last1=ICTV|title=Virus Taxonomy: 2014 Release|url=http://ictvonline.org/virusTaxonomy.asp|access-date=15 June 2015}}</ref> |
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| subdivision_ranks = Species |
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'''''Narnavirus''''' is a genus of [[Positive-strand RNA virus|positive-strand RNA viruses]], in the family '''''Narnaviridae'''''. [[Fungus|Fungi]] serve as natural hosts. There are currently two species in this genus including the type species ''[[Saccharomyces 20S RNA narnavirus]]''.<ref name=ICTV /><ref name=ViralZone>{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/303.html|publisher=ExPASy| |
'''''Narnavirus''''' is a genus of [[Positive-strand RNA virus|positive-strand RNA viruses]], in the family '''''Narnaviridae'''''. [[Fungus|Fungi]] serve as natural hosts. There are currently two species in this genus including the type species ''[[Saccharomyces 20S RNA narnavirus]]''.<ref name=ICTV /><ref name=ViralZone>{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/303.html|publisher=ExPASy|access-date=15 June 2015}}</ref> Narnaviruses have been shown to be required for sexual reproduction of ''[[Rhizopus microsporus]]''.<ref>{{cite journal | year = 2020 | title = Narnaviruses: Novel players in fungal–bacterial symbioses | authors = Espino-Vázquez AN, Bermúdez-Barrientos JR, Cabrera-Rangel JF, Córdova-López G, Cardoso-Martínez F, Martínez-Vázquez A, Camarena-Pozos DA, Mondo SJ, Pawlowska TE, Abreu-Goodger C, Partida-Martínez LP. | journal = The ISME Journal | doi = 10.1038/s41396-020-0638-y}}</ref> |
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==Structure== |
==Structure== |
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Revision as of 20:22, 18 December 2020
| Narnavirus | |
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| Narnaviruses have no capsid or viral envelope, RNA genome and RdRp form a naked ribonucleoprotein complex | |
Virus classification 
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| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Lenarviricota |
| Class: | Amabiliviricetes |
| Order: | Wolframvirales |
| Family: | Narnaviridae |
| Genus: | Narnavirus |
| Species | |
Narnavirus is a genus of positive-strand RNA viruses, in the family Narnaviridae. Fungi serve as natural hosts. There are currently two species in this genus including the type species Saccharomyces 20S RNA narnavirus.[1][2] Narnaviruses have been shown to be required for sexual reproduction of Rhizopus microsporus.[3]
Structure
Narnaviruses have no true virion. They do not have structural proteins or a capsid.[4]
Genome
Narnaviruses have nonsegmented, linear, positive-sense, single-stranded RNA genomes. The genome has one open reading frame which encodes the RNA-dependent RNA polymerase (RdRp). The genome is associated with the RdRp in the cytoplasm of the fungi host and forms a naked ribonucleoprotein complex.[2]
Life cycle
Viral replication is cytoplasmic. Replication follows the positive-strand RNA virus replication model. Positive-strand RNA virus transcription is the method of transcription. The virus exits the host cell by cell-to-cell movement. Fungi serve as the natural host. Transmission routes are parental and sexual.[2]
Taxonomy
The genus has two species:
- Narnaviridae
References
- ^ Cite error: The named reference
ICTVwas invoked but never defined (see the help page). - ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
- ^ "Narnaviruses: Novel players in fungal–bacterial symbioses". The ISME Journal. 2020. doi:10.1038/s41396-020-0638-y.
{{cite journal}}: Cite uses deprecated parameter|authors=(help) - ^ Dolja, V. V.; Koonin, E. V. (2012). "Capsid-Less RNA Viruses". ELS. doi:10.1002/9780470015902.a0023269. ISBN 978-0470016176.