Caulimovirus

Caulimovirus is a genus of viruses, in the family Caulimoviridae order Ortervirales. Plants serve as natural hosts. There are currently 13 species in this genus including the type species Cauliflower mosaic virus. Diseases associated with this genus include: vein-clearing or banding mosaic.[1][2]

Caulimovirus
TEM micrograph of CaMV virions
bar scale equals 100 nm
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Pararnavirae
Phylum: Artverviricota
Class: Revtraviricetes
Order: Ortervirales
Family: Caulimoviridae
Genus: Caulimovirus
Type species
Cauliflower mosaic virus

Taxonomy

Group: dsDNA-RT

[2]

Structure

Viruses in Caulimovirus are non-enveloped, with icosahedral geometries, and T=7, T=7 symmetry. The diameter is around 50 nm. Genomes are circular and non-segmented. The genome codes for 6 to 7 proteins.[1]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
CaulimovirusIcosahedralT=7Non-envelopedCircularMonopartite

Life cycle

Viral replication is nuclear/cytoplasmic. Entry into the host cell is achieved by attachment of the viral proteins to host receptors, which mediates endocytosis. Replication follows the dsDNA (RT) replication model. Dna templated transcription, specifically dsdna (rt) transcription is the method of transcription. Translation takes place by ribosomal shunting. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (aphid insects). Transmission routes are mechanical.[1]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
CaulimovirusPlantsNoneViral movement; mechanical inoculationViral movementNucleusCytoplasmMechanical inoculation: aphids

References
  1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
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