Narnavirus

Narnavirus
	Narnaviruses have no capsid or viral envelope , RNA genome and RdRp form a naked ribonucleoprotein complex
Virus classification
(unranked):	Virus
Realm :	Riboviria
Kingdom:	Orthornavirae
Phylum:	Lenarviricota
Class:	Amabiliviricetes
Order:	Wolframvirales
Family:	Narnaviridae
Genus:	Narnavirus
Species
	See text

Narnavirus is a genus of positive-strand RNA viruses in the family Narnaviridae . Fungi serve as natural hosts. There are two species in this genus. ^[1]^[2] Member viruses have been shown to be required for sexual reproduction of Rhizopus microsporus . ^[3] Narnaviruses have a na ked RNA genome without a virion and derive their name from this feature. ^[4]

Virology [ edit ]

Structure [ edit ]

Narnaviruses have no true virion. They do not have structural proteins or a capsid . ^[5]

Genome [ edit ]

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]

Replication cycle [ edit ]

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 [ edit ]

The genus has the following two species: ^[1]

References [ edit ]

^ ^a ^b "Virus Taxonomy: 2020 Release" . International Committee on Taxonomy of Viruses (ICTV). March 2021 . Retrieved 16 May 2021 .
^ ^a ^b ^c "Viral Zone" . ExPASy . Retrieved 15 June 2015 .
^ Espino-Vazquez AN; Bermudez-Barrientos JR; Cabrera-Rangel JF; Cordova-Lopez G; Cardoso-Martinez F; Martinez-Vazquez A; Camarena-Pozos DA; Mondo SJ; Pawlowska TE; Abreu-Goodger C; Partida-Martinez LP. (2020). "Narnaviruses: Novel players in fungal?bacterial symbioses" . The ISME Journal . 14 (7): 1743?1754. doi : 10.1038/s41396-020-0638-y . PMC 7305303 . PMID 32269378 .
^ "Narnaviridae - Positive Sense RNA Viruses - Positive Sense RNA Viruses (2011) - ICTV" . talk.ictvonline.org . Retrieved 15 June 2021 . ^{[
dead link
]}
^ Dolja, V. V.; Koonin, E. V. (2012). "Capsid-Less RNA Viruses". ELS . doi : 10.1002/9780470015902.a0023269 . ISBN 978-0-470-01617-6 .

External links [ edit ]

[ICTV-1] "Virus Taxonomy: 2020 Release" . International Committee on Taxonomy of Viruses (ICTV). March 2021 . Retrieved 16 May 2021 .

[ViralZone-2] "Viral Zone" . ExPASy . Retrieved 15 June 2015 .

[3] Espino-Vazquez AN; Bermudez-Barrientos JR; Cabrera-Rangel JF; Cordova-Lopez G; Cardoso-Martinez F; Martinez-Vazquez A; Camarena-Pozos DA; Mondo SJ; Pawlowska TE; Abreu-Goodger C; Partida-Martinez LP. (2020). "Narnaviruses: Novel players in fungal?bacterial symbioses" . The ISME Journal . 14 (7): 1743?1754. doi : 10.1038/s41396-020-0638-y . PMC 7305303 . PMID 32269378 .

[4] "Narnaviridae - Positive Sense RNA Viruses - Positive Sense RNA Viruses (2011) - ICTV" . talk.ictvonline.org . Retrieved 15 June 2021 . ^{[
dead link
]}

[nocapsid-5] Dolja, V. V.; Koonin, E. V. (2012). "Capsid-Less RNA Viruses". ELS . doi : 10.1002/9780470015902.a0023269 . ISBN 978-0-470-01617-6 .

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