Group Group VII (dsDNA-RT) Genus Caulimovirus | Family Caulimoviridae | |
Caulimovirus is a genus of viruses, in the family Caulimoviridae. Plants serve as natural hosts. There are currently ten species in this genus including the type species Cauliflower mosaic virus. Diseases associated with this genus include: vein-clearing or banding mosaic.
Contents
Taxonomy
Group: ssRNA-RT
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.
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.