Aquareovirus

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Aquareovirus
grass carp reovirus
(GCRV)
EM
of Scophthalmus maximus reovirus (SMReV) virion bars equal 100 nm.
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Duplornaviricota
Class: Resentoviricetes
Order:
Reovirales
Family: Sedoreoviridae
Subfamily: Spinareovirinae
Genus: Aquareovirus

Aquareovirus is a genus of

hemorrhagic disease, hepatitis and pancreatitis. Grass carp hemorrhage virus (causes hemorrhagic disease of grass carp) is the most pathogenic aquareovirus. There are seven species in this genus.[1][2]

Structure

Aquareoviruses are non-enveloped, with a double capsid structure that has icosahedral geometries, and T=13, T=2 symmetry. The diameter is around 75 nm.[1]

Genome

Comparison of genomes of different members of the genus Aquareovirus

Aquareoviruses have double-stranded RNA genomes which are linear and segmented. The total genome length ranges from 18.2 to 30.5 kbp. The genome has eleven segments and codes for twelve proteins.[1]

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host cell receptors, which mediates endocytosis. 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 monopartite non-tubule guided viral movement. Fish, shellfish, and crustacean species serve as the natural host.[1]

Taxonomy

The genus Aquareovirus has seven member species:[2]

References

  1. ^ a b c d "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 13 May 2021.

External links