''Babuvirus'' is a genus 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 bacteria and archaea. Since Dmitri Ivanovsky's 1 ...

, in the family ''

Nanoviridae ''Nanoviridae'' is a family of viruses. Plants serve as natural hosts. There are currently 12 species in this family, divided among 2 genera and one unassigned species. Diseases associated with this family include: stunting. Their name is derive ...

''. ''

Musa Musa may refer to: Places *Mūša, a river in Lithuania and Latvia * Musa, Azerbaijan, a village in Yardymli Rayon * Musa, Iran, a village in Ilam Province *Musa, Chaharmahal and Bakhtiari, Iran *Musa, Kerman, Iran * Musa, Bukan, West Azerbaijan ...

'' species serve as natural hosts. There are three species in this genus. Diseases associated with this genus include: stunting, severe necrosis and early plant death. BBTV induces banana bunchy top disease (BBTD).

Taxonomy

The following species are included in the genus: * ''

Abaca bunchy top virus Abaca bunchy top virus (ABTV) is a pathogenic plant virus of the family ''Nanoviridae''. ABTV has been isolated from both abacá (''Musa textilis'') and banana (Musa sp.). ABTV has many similarities to banana bunchy top virus (BBTV) but is both g ...

'' * ''

Banana bunchy top virus ''Banana bunchy top virus'' (BBTV) is a plant pathogenic virus of the family Nanoviridae known for infecting banana plants and other crops. It is aphid transmitted. Definition Banana bunchy top is a viral disease caused by a single-stranded ...

'' * '' Cardamom bushy dwarf virus''

Structure and genome

Viruses in the genus ''Babuvirus'' are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 18-19 nm. Genomes are

multipartite Multipartite is a class of virus that have segmented nucleic acid genomes, with each segment of the genome enclosed in a separate viral particle. Only a few ssDNA viruses have multipartite genomes, but a lot more RNA viruses have multipartite geno ...

with 6 to 8 circular segments. Genome size is around 81 kb in totsl.

Life cycle

Viral replication is nuclear. Entry into the host cell is achieved by penetration into the host cell. Replication follows the ssDNA rolling circle model. DNA templated transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. ''Musa'' species serve as the natural host. The virus is transmitted via a vector (aphids). Transmission routes are vector.

References

External links

ICTV Report ''Nanoviridae''

* {{Taxonbar, from=Q17000013 Nanoviridae Virus genera