Avibirnavirus
| Avibirnavirus | |
|---|---|
| Virus classification | |
| Group: | Group III (dsRNA) |
| Family: | Birnaviridae |
| Genus: | Avibirnavirus |
| Type Species | |
Avibirnavirus is a genus of viruses, in the family Birnaviridae. Young chickens and other fowl serve as natural hosts. There are currently only one species in this genus: the type species Infectious bursal disease virus. Diseases associated with this genus include: IBDV causes severe inflammation of the bursa of fabricius. The disease causes considerable morbidity and mortality in an acute form or as a consequence of severe immunosuppression provoked by the destruction of immature B-lymphocytes within the bursa of fabricius.[1][2]
Taxonomy
Group: dsRNA
- Family: Birnaviridae
- Genus: Avibirnavirus
Structure
Viruses in Avibirnavirus are non-enveloped, with icosahedral and Single-shelled geometries, and T=13 symmetry. The diameter is around 70 nm. Genomes are linear and segmented, around 15.2.9-3kb in length. The genome codes for 5 proteins.[1]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Avibirnavirus | Icosahedral | T=13 | 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. Young chickens and other fowl serve as the natural host. Transmission routes are contamination.[1]
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Avibirnavirus | Birds | None | Cell receptor endocytosis | Budding | Cytoplasm | Cytoplasm | Contact |
References
- 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.