''Bromovirus'' is a genus of

virus A virus is a submicroscopic infectious agent that replicates only inside the living Cell (biology), cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are ...

es, in the family ''

Bromoviridae ''Bromoviridae'' is a family of viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bac ...

''. Plants serve as natural hosts. There are seven species in this genus.

Taxonomy

The following species are assigned to the genus, listed by scientific name and followed by their common names: * ''Bromovirus BBMV'', Broad bean mottle virus * ''Bromovirus BMV'',

Brome mosaic virus Brome mosaic virus (BMV) is a small (28 nanometer, nm, 86Svedberg, S), positive-stranded, icosahedral RNA plant virus belonging to the genus ''Bromovirus'', family ''Bromoviridae'', in the ''Alphavirus''-like superfamily. Brome mosaic virus was ...

* ''Bromovirus CCMV'', Cowpea chlorotic mottle virus * ''Bromovirus CYBV'', Cassia yellow blotch virus * ''Bromovirus MYFV'', Melandrium yellow fleck virus * ''Bromovirus SBLV'', Spring beauty latent virus * ''Bromovirus SVS'', Sambucus virus S

Structure

Viruses in the genus ''Bromovirus'' are non-enveloped, with icosahedral geometries, and T=3 symmetry. The diameter is around 26 nm. Genomes are linear and segmented, tripartite.

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, 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.

Recombination

''Brome mosaic virus'' (BMV)

genome A genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding genes, other functional regions of the genome such as ...

s are able to undergo

RNA Ribonucleic acid (RNA) is a polymeric molecule that is essential for most biological functions, either by performing the function itself (non-coding RNA) or by forming a template for the production of proteins (messenger RNA). RNA and deoxyrib ...

homologous recombination Homologous recombination is a type of genetic recombination in which genetic information is exchanged between two similar or identical molecules of double-stranded or single-stranded nucleic acids (usually DNA as in Cell (biology), cellular organi ...

upon infection of plant cells. The

RNA-dependent RNA polymerase RNA-dependent RNA polymerase (RdRp) or RNA replicase is an enzyme that catalyzes the self-replication, replication of RNA from an RNA template. Specifically, it catalyzes synthesis of the RNA strand Complementarity (molecular biology), compleme ...

specified by the BMV genome appears to undergo template switching (copy choice) recombination during

viral RNA An RNA virus is a virus characterized by a ribonucleic acid (RNA) based genome. The genome can be single-stranded RNA (ssRNA) or double-stranded (dsRNA). Notable human diseases caused by RNA viruses include influenza, SARS, MERS, COVID-19, Dengu ...

synthesis.

References

External links

ICTV Report: ''Bromoviridae''

{{Taxonbar, from=Q17081113 Bromoviridae Virus genera