Viruses in the family Bromoviridae are non-enveloped, with icosahedral and bacilliform geometries. The diameter is around 26-35 nm.[3][4]
Genus
Structure
Symmetry
Capsid
Genomic arrangement
Genomic segmentation
Ilarvirus
Icosahedral
T=3
Non-enveloped
Linear
Segmented
Anulavirus
Icosahedral
T=3
Non-enveloped
Linear
Segmented
Bromovirus
Icosahedral
T=3
Non-enveloped
Linear
Segmented
Oleavirus
Icosahedral
T=1
Non-enveloped
Linear
Segmented
Alfamovirus
Varies
Non-enveloped
Linear
Segmented
Cucumovirus
Icosahedral
T=3
Non-enveloped
Linear
Segmented
Genomes are linear and segmented, tripartite.[3][4]
Life cycle
Viral replication is cytoplasmic, and is lysogenic. 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, using the internal initiation model of subgenomic rna transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. Transmission routes are mechanical and contact.[3][4]