Badnavirus
| Badnavirus | |
|---|---|
| Virus classification | |
| Group: | Group VII (dsDNA-RT) |
| Family: | Caulimoviridae |
| Genus: | Badnavirus |
| Type species | |
| Commelina yellow mottle virus | |
Badnavirus is a genus of viruses, in the family Caulimoviridae. Plants serve as natural hosts. There are currently 32 species in this genus including the type species Commelina yellow mottle virus. Diseases associated with this genus include: CSSV: leaf chlorosis, root necrosis, red vein banding in young leaves, small mottled pods, and stem/root swelling followed by die-back. Infection decreases yield by 25% within one year, 50% within two years and usually kills trees within 3–4 years.[1][2]
Taxonomy
Group: dsDNA-RT
- Family: Caulimoviridae
- Genus: Badnavirus
- Aglaonema bacilliform virus
- Banana streak GF virus
- Banana streak IM virus
- Banana streak MY virus
- Banana streak OL virus
- Banana streak UA virus
- Banana streak UI virus
- Banana streak UL virus
- Banana streak UM virus
- Banana streak VN virus
- Bougainvillea chlorotic vein banding virus
- Cacao swollen shoot virus
- Canna yellow mottle virus
- Citrus yellow mosaic virus
- Commelina yellow mottle virus
- Dioscorea bacilliform AL virus
- Dioscorea bacilliform SN virus
- Fig badnavirus 1
- Gooseberry vein banding associated virus
- Grapevine vein clearing virus
- Kalanchoë top-spotting virus
- Pagoda yellow mosaic associated virus
- Pineapple bacilliform CO virus
- Pineapple bacilliform ER virus
- Piper yellow mottle virus
- Rubus yellow net virus
- Schefflera ringspot virus
- Spiraea yellow leafspot virus
- Sugarcane bacilliform IM virus
- Sugarcane bacilliform MO virus
- Sweet potato pakakuy virus
- Taro bacilliform virus
Structure
Viruses in Badnavirus are non-enveloped, with bacilliform geometries. These viruses are about 30 nm wide and 90-900 nm long. Genomes are circular and non-segmented.[1]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Badnavirus | Bacilliform | T=3 | Non-Enveloped | Circular | Monopartite |
Life Cycle
Viral replication is nuclear/cytoplasmic. Entry into the host cell is achieved by attachment of the viral proteins to host receptors, which mediates endocytosis. Replication follows the dsDNA(RT) replication model. Dna templated transcription, specifically dsdna(rt) transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (cssv: mealybugs). Transmission routes are vector, mechanical, and seed borne.[1]
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Badnavirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Nucleus | Cytoplasm | Mechanical inoculation: mealybugs; mechanical; wounds; seed |
References
- 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.