Mitovirus
Mitovirus is a genus of positive-strand RNA viruses, in the family Mitoviridae. Fungi serve as natural hosts. There are five species in the genus including the type species Cryphonectria mitovirus 1.[1][2]
Mitovirus | |
---|---|
Mitoviruses 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: | Howeltoviricetes |
Order: | Cryppavirales |
Family: | Mitoviridae |
Genus: | Mitovirus |
Type species | |
Cryphonectria mitovirus 1 | |
Species | |
Genome
Mitoviruses 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.[3]
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.[1]
Taxonomy
There are five species in the genus:[2]
- Mitovridae
- Mitovirus
- Cryphonectria mitovirus 1
- Ophiostoma mitovirus 4
- Ophiostoma mitovirus 5
- Ophiostoma mitovirus 6
- Ophiostoma mitovirus 3a
- Mitovirus
References
- "Viral Zone". ExPASy. Retrieved 15 June 2015.
- "Virus Taxonomy: 2019 Release". talk.ictvonline.org. International Committee on Taxonomy of Viruses. Retrieved 25 April 2020.
- "Viral Zone". ExPASy. Retrieved 15 June 2015.