Velarivirus
| Velarivirus | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Kitrinoviricota |
| Class: | Alsuviricetes |
| Order: | Martellivirales |
| Family: | Closteroviridae |
| Genus: | Velarivirus |
Velarivirus is a genus of viruses, in the family Closteroviridae.[1] Plants serve as natural hosts. There are currently seven species in this genus, including the type species Grapevine leafroll-associated virus 7. Diseases associated with this genus include: GLRaV-7: symptomless in white-berried grapevine cultivar from Albania. However, it induces leafroll symptoms onto grafted cv. cabernet.[1][2]
Taxonomy
Group: ssRNA(+)
Structure
Viruses in the genus Velarivirus are non-enveloped, with filamentous geometries. These viruses are about 1500-1700 nm long. Genomes are linear, around 16-17kb in length. The genome codes for 10 proteins.[1][2]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Velarivirus | Filamentous | Non-enveloped | Linear | Monopartite |
Life cycle
Viral 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 tubule-guided viral movement. Plants serve as the natural host. Transmission routes are mechanical.[1][2]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Velarivirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: insects |
References
- ^ a b c d e "ICTV Report Closteroviridae".
- ^ a b c "Viral Zone". ExPASy. Retrieved 13 August 2015.