Polerovirus
| Polerovirus | |
|---|---|
| Virus classification | |
| Group: | Group IV ((+)ssRNA) |
| Family: | Luteoviridae |
| Genus: | Polerovirus |
| Type Species | |
Polerovirus is a genus of viruses, in the family Luteoviridae. Plants serve as natural hosts. There are currently 17 species in this genus including the type species Potato leafroll virus. Diseases associated with this genus include: PLRV causes prominent rolling of the leaves of potato and a stiff upright habit of the plants; necrosis of the phloem and accumulation of carbohydrates in the leaves.[1][2]
Taxonomy
Group: ssRNA(+)
- Family: Luteoviridae
- Genus: Polerovirus
- Beet chlorosis virus
- Beet mild yellowing virus
- Beet western yellows virus
- Carrot red leaf virus
- Cereal yellow dwarf virus-RPS
- Cereal yellow dwarf virus-RPV
- Chickpea chlorotic stunt virus
- Cotton leafroll dwarf virus
- Cucurbit aphid-borne yellows virus
- Maize yellow dwarf virus-RMV
- Melon aphid-borne yellows virus
- Pepper vein yellows virus
- Potato leafroll virus
- Suakwa aphid-borne yellows virus
- Sugarcane yellow leaf virus
- Tobacco vein distorting virus
- Turnip yellows virus
Structure
Viruses in Polerovirus are non-enveloped, with icosahedral and Spherical geometries, and T=3 symmetry. The diameter is around 23 nm. Genomes are linear and non-segmented, around 5.3-5.7kb in length.[1]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Polerovirus | Icosahedral | T=3 | Non-Enveloped | Linear | Monopartite |
Life Cycle
Viral replication is cytoplasmic. 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. Translation takes place by leaky scanning, -1 ribosomal frameshifting, and suppression of termination. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (plrv: myzus persicae). Transmission routes are vector and mechanical.[1]
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Polerovirus | Plants | Phloem | Viral movement; mechanical innoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical innoculation: aphids |
References
- 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.