Allexivirus is a genus of viruses in the order Tymovirales, in the family Alphaflexiviridae. Shallot, onion, and garlic serve as natural hosts. There are 13 species in this genus, seven of which are assigned to a subgenus. Diseases associated with this genus include: mosaic and ringspot symptoms.[1][2]
| Allexivirus | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Kitrinoviricota |
| Class: | Alsuviricetes |
| Order: | Tymovirales |
| Family: | Alphaflexiviridae |
| Genus: | Allexivirus |
| Species | |
|
See text | |
Taxonomy
editThe following species are assigned to the genus:[2]
- Subgenus: Acarallexivirus
- Species not assigned to a subgenus:
Structure
editViruses in Allexivirus are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12 nm, with a length of 800 nm. Genomes are linear, around 9kb in length. The genome codes for 6 proteins.[1]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Allexivirus | Filamentous | Non-enveloped | Linear | Monopartite |
Life cycle
editViral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. 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 tripartite non-tubule guided viral movement. Shallot, onion, and garlic serve as the natural host. The virus is transmitted via a vector (mite). Transmission routes are vector and mechanical.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Allexivirus | Plants: Shallot; plants: onion; plants: garlic | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mites |
References
edit- ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
- ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 15 May 2021.
External links
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