| 词条 | Avibirnavirus | ||||||||||||||||||||||||||||
| 释义 |
| virus_group = iii | familia = Birnaviridae | genus = Avibirnavirus | subdivision_ranks = Type Species | subdivision =
}}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] TaxonomyGroup: dsRNA{{Collapsible list|title= Order: Unassigned|1={{Collapsible list| framestyle=border:none; padding:1.0em;|title=Family: Birnaviridae |1={{hidden begin|title=Genus: Avibirnavirus}}
}} }}[2] StructureViruses 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]
Life cycleViral 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]
References1. ^1 2 {{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/572.html|publisher=ExPASy|accessdate=15 June 2015}} 2. ^1 {{cite web|last1=ICTV|title=Virus Taxonomy: 2014 Release|url=http://ictvonline.org/virusTaxonomy.asp|accessdate=15 June 2015}} External links
1 : Birnaviridae |
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