| Bullavirinae | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Monodnaviria |
| Kingdom: | Sangervirae |
| Phylum: | Phixviricota |
| Class: | Malgrandaviricetes |
| Order: | Petitvirales |
| Family: | Microviridae |
| Subfamily: | Bullavirinae |
| Genera | |
Bullavirinae is a subfamily of viruses in the family Microviridae. Enterobacteria serve as natural hosts. There are 14 species in this subfamily, organized into three genera.[1]
Taxonomy[edit]
The following genera and species are recognized:[1]
- Genus: Alphatrevirus; species:
- Genus: Gequatrovirus; species:
- Genus: Sinsheimervirus; species:
Structure[edit]
Viruses in Bullavirinae are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 30 nm. Genomes are circular, around 6.1kb in length.[2]
Life cycle[edit]
Viral replication is cytoplasmic. Entry into the host cell is achieved by pilus-mediated adsorption 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 bacteria lysis.[citation needed]
Enterobacteria serve as the natural host. Transmission routes are passive diffusion.[2]
References[edit]
- ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 10 May 2021.
- ^ a b "Viral Zone". ExPASy. Retrieved 15 June 2015.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction