Polemovirus is a genus of viruses. Commercial cultivars of Euphorbia pulcherrima serve as natural hosts. There is only one species in this genus: Poinsettia latent virus.[2][3] Its RNA suggests a replication mode like that of poleroviruses, whereas the coat protein sequence is closely related to that of sobemoviruses.[4]
| Poinsettia latent virus | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Pisoniviricetes |
| Order: | Sobelivirales |
| Family: | Solemoviridae |
| Genus: | Polemovirus |
| Species: | Poinsettia latent virus
|
| Synonyms | |
| |
Structure
edit
Viruses in Polemovirus are non-enveloped, with icosahedral geometries, and T=3 symmetry. Genomes are linear and non-segmented.[2]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Polemovirus | Icosahedral | T=3 | Non-enveloped | Linear | Monopartite |
Life cycle
editViral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Commercial cultivars of Euphorbia pulcherrima serve as the natural host.[2]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Polemovirus | Plants | None | Penetration | Viral Movement | Cytoplasm | Cytoplasm | Unknown |
References
edit- ^ "ICTV 9th Report (2011) Polemovirus" (HTML). International Committee on Taxonomy of Viruses. 2011. Retrieved 14 November 2019.[dead link]
- ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
- ^ "Virus Taxonomy: 2022 Release". International Committee on Taxonomy of Viruses (ICTV). March 2023. Retrieved 10 August 2023.
- ^ aus dem Siepen, Marc; Pohl, Jens O.; Koo, Bong-Jin; Wege, Christina; Jeske, Holger (June 2005). "Poinsettia latent virus is not a cryptic virus, but a natural polerovirus–sobemovirus hybrid". Virology. 336 (2): 240–250. doi:10.1016/j.virol.2005.03.020. PMID 15892965.