|Group:||Group IV ((+)ssRNA)|
Narnaviridae is a family of positive single stranded RNA viruses. Members of this family have no capsid. Fungi serve as natural hosts. There are currently seven species in this family, divided among 2 genera.
The genome of these viruses is unipartate and between 2.3 and 3.5 kilobases in length. It encodes a single gene—the RNA dependent RNA polymerase. This protein is associated with the genome in the cytoplasm of the host. The viruses do not have a capsid or envelop and do not form any infectious viral particles except lipid vesicles.
|Genus||Structure||Symmetry||Capsid||Genomic Arrangement||Genomic Segmentation|
|Mitovirus||No structural proteins||Non-Enveloped||Linear||Monopartite|
|Narnavirus||No structural proteins||Non-Enveloped||Linear||Monopartite|
Viral replication is cytoplasmic. Replication follows the positive stranded RNA virus replication model. Positive-stranded 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.
|Genus||Host Details||Tissue Tropism||Entry Details||Release Details||Replication Site||Assembly Site||Transmission|
|Mitovirus||Fungi||None||Horizontal; vertical||None||Cytoplasm||Cytoplasm||Horizontal: mating; vertical: parental|
|Narnavirus||Fungi||None||Horizontal; vertical||None||Cytoplasm||Cytoplasm||Horizontal: mating; vertical: parental|
Other proposed members of the Mitovirus are OnuMV1c and OnuMV7.
Their closest relatives among RNA viruses are plant-infecting viruses of genus Ourmiavirus, which, however, have a capsid and a number of other proteins. Other close relatives are bacteriophages of the family Leviviridae.
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- Hillman, B. I.; Cai, G. (2013). "The Family Narnaviridae". Mycoviruses. Advances in Virus Research. 86. p. 149. doi:10.1016/B978-0-12-394315-6.00006-4. ISBN 9780123943156.
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