''Avastrovirus'' is a genus of
viruses
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea.
Since Dmitri Ivanovsky's ...
, in the family ''
Astroviridae
''Astroviridae'' is a family of non-enveloped ssRNA viruses that cause infections in different animals. The family name is derived from the Greek word ''astron'' ("star") referring to the star-like appearance of spikes projecting from the surface ...
''. Birds serve as natural hosts. There are three species in this genus. Diseases associated with this genus include: gastroenteritis, liver or kidney damages.
Taxonomy
The genus contains the following species:
* ''
Avastrovirus 1
''Avastrovirus'' is a genus of viruses, in the family ''Astroviridae
''Astroviridae'' is a family of non-enveloped ssRNA viruses that cause infections in different animals. The family name is derived from the Greek word ''astron'' ("star") re ...
''
* ''
Avastrovirus 2
''Avastrovirus 2'', also called avian nephritis virus, is an astrovirus which causes 'avian nephritis' in chickens.
Causes: Infectious Stunting Syndrome — ISS — Baby Chick Nephritis — BCN.
The virus has been reported in Japan, Europe, US ...
''
* ''
Avastrovirus 3''
Structure
Viruses in ''Avastrovirus'' are non-enveloped, with icosahedral and spherical geometries, and T=3 symmetry. The diameter is around 35 nm. Genomes are linear and non-segmented, around 6.8-7kb in length.
Life cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription, using an unknown model of subgenomic RNA transcription is the method of transcription. Translation takes place by -1 ribosomal frameshifting. Birds serve as the natural host. Transmission routes are fecal-oral.
References
External links
Viralzone: AvastrovirusICTV
{{Taxonbar, from=Q18815093
Astroviridae
Virus genera