Babuvirus
| Babuvirus | |
|---|---|
| Virus classification | |
| Group: | Group II (ssDNA) |
| Family: | Nanoviridae |
| Genus: | Babuvirus |
| Type Species | |
Babuvirus is a genus of viruses, in the family Nanoviridae. Musa species serve as natural hosts. There are currently three species in this genus including the type species Banana bunchy top virus. Diseases associated with this genus include: stunting, severe necrosis and early plant death. BBTV induces banana bunchy top disease (BBTD).[1][2]
Taxonomy
Group: ssDNA
- Family: Nanoviridae
- Genus: Babuvirus
- Abaca bunchy top virus
- Banana bunchy top virus
- Cardamom bushy dwarf virus
Structure
Viruses in Babuvirus are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 18-19 nm. Genomes are circular, around 81kb in length.[1]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Babuvirus | Icosahedral | T=1 | Non-enveloped | Circular | Segmented |
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.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Babuvirus | Plants: musa species | Phloem | Viral movement; mechanical inoculation | Secretion; viral movement | Nucleus | Nucleus | Aphids |
References
- 1 2 3 "Viral Zone". ExPASy. Retrieved 12 June 2015.
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 12 June 2015.