Comovirus

Comovirus is a genus of viruses in the order Picornavirales, in the family Secoviridae, in the subfamily Comovirinae. Plants serve as natural hosts. There are 15 species in this genus.[1][2]

Comovirus
Structure of the Cowpea Mosaic Virus based on PDB 2BFU
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Picornavirales
Family: Secoviridae
Subfamily: Comovirinae
Genus: Comovirus

Taxonomy

The genus contains the following species:[2]

  • Andean potato mottle virus
  • Bean pod mottle virus
  • Bean rugose mosaic virus
  • Broad bean stain virus
  • Broad bean true mosaic virus
  • Cowpea mosaic virus
  • Cowpea severe mosaic virus
  • Glycine mosaic virus
  • Pea green mottle virus
  • Pea mild mosaic virus
  • Quail pea mosaic virus
  • Radish mosaic virus
  • Red clover mottle virus
  • Squash mosaic virus
  • Ullucus virus C

Structure

Viruses in Comovirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 28-30 nm. Genomes are linear and segmented, bipartite, around 24-7kb in length.[1]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
ComovirusIcosahedralPseudo T=3Non-envelopedLinearSegmented

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (beetle). Transmission routes are vector and mechanical.[1]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
ComovirusPlantsNoneViral movement; mechanical inoculationViral movementCytoplasmCytoplasmMechanical inoculation: beetles

References
  1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 21 May 2021.
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