Group Group II (ssDNA) Higher classification Nanoviridae | Family Nanoviridae Rank Genus | |
Similar Banana bunchy top virus, Nanovirus, Pentalonia nigronervosa | ||
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).
Contents
Taxonomy
Group: ssDNA
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.
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.