Alphachrysovirus
| Alphachrysovirus | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Duplornaviricota |
| Class: | Chrymotiviricetes |
| Order: | Ghabrivirales |
| Family: | Chrysoviridae |
| Genus: | Alphachrysovirus |
Alphachrysovirus is a genus of viruses. It is one of two genera in the family Chrysoviridae.[1] They are in Baltimore Group III (double-stranded RNA viruses) and infect fungi, in particular Penicillium. Their name is derived from the Greek word chrysos which means yellow-green. There are currently 17 species in this genus including the type species Penicillium chrysogenum virus.[2][3]
Taxonomy
The following species are recognized:[4]
- Amasya cherry disease associated chrysovirus
- Anthurium mosaic-associated chrysovirus
- Aspergillus fumigatus chrysovirus
- Brassica campestris chrysovirus
- Colletotrichum gloeosporioides chrysovirus
- Cryphonectria nitschkei chrysovirus 1
- Fusarium oxysporum chrysovirus 1
- Helminthosporium victoriae virus 145S
- Isaria javanica chrysovirus
- Macrophomina phaseolina chrysovirus
- Penicillium brevicompactum virus
- Penicillium chrysogenum virus
- Penicillium cyaneofulvum virus
- Persea americana chrysovirus
- Raphanus sativus chrysovirus
- Shuangao insect-associated chrysovirus
- Verticillium dahliae chrysovirus 1
Structure
Viruses in the genus Alphachrysovirus are non-enveloped, with icosahedral geometries, and T=1, T=2 symmetry. The diameter is around 35-40 nm. Genomes are linear and segmented, around 12.5kbp in length. The genome codes for 4 proteins. The genome has three double stranded RNA segments. All have extended highly conserved terminal sequences at both ends.[2][3]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Alphachrysovirus | Icosahedral | T=1 | Non-enveloped | Linear | Segmented |
Life cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the double-stranded RNA virus replication model. Double-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.[2][3]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Alphachrysovirus | Fungi | None | Cytoplasmic exchange; sporogenesis; Hyphal anastomosis | Cytoplasmic exchange; sporogenesis; Hyphal anastomosis | Cytoplasm | Cytoplasm | Cytoplasmic exchange; sporogenesis; Hyphal anastomosis |
References
- ^ Ghabrial, SA; Castón, JR; Coutts, RHA; Hillman, BI; Jiang, D; Kim, DH; Moriyama, H; Ictv Report, Consortium (January 2018). "ICTV Virus Taxonomy Profile: Chrysoviridae". The Journal of General Virology. 99 (1): 19–20. doi:10.1099/jgv.0.000994. PMC 5882088. PMID 29251589.
- ^ a b c "ICTV Online Report Chrysoviridae".
- ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
- ^ "Virus Taxonomy: 2019 Release". talk.ictvonline.org. International Committee on Taxonomy of Viruses. Retrieved 11 May 2020.