Okavirus

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(Redirected from
Roniviridae
)

Tipravirus
Roniviridae virion
Yellow head virus
genome
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Nidovirales
Family: Roniviridae
Genus: Okavirus
Subgenus: Tipravirus

Okavirus is a genus of enveloped

penaeid shrimp. There are three species in this genus.[1]

Structure

Viruses in the genus Okavirus are enveloped, with bacilliform geometries, and helical symmetry. The diameter is around 20–30 nm.[1][3]

Genome

Genomes are linear and non-segmented, around 26 kb in length.[1][3]

Life cycle

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 is the method of transcription. Crustaceans and mostly prawns serve as the natural host. Transmission routes are ingestion.[1][3]

Taxonomy

Phylogenetic tree of Ronviridae

The genus contains one subgenus with three species:[4]

  • Tipravirus
    • Gill-associated virus
    • Okavirus 1
    • Yellow head virus

References

  1. ^ a b c d e f "ICTV Report Roniviridae".
  2. PMID 33108263
    .
  3. ^ a b c d "Viral Zone". ExPASy. Retrieved 15 June 2015.
  4. ^ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 20 May 2021.

External links