Carlavirus
| Carlavirus | |
|---|---|
| Virus classification | |
| Group: | Group IV ((+)ssRNA) |
| Order: | Tymovirales |
| Family: | Betaflexiviridae |
| Genus: | Carlavirus |
| Type species | |
| Carnation latent virus | |
Carlavirus, also known as the "Carnation latent virus group", is a genus of virus that infects plants.
Taxonomy
There are currently 52 virus species included in this genus. The type species is the Carnation latent virus.
Species:
- Aconitum latent virus
- American hop latent virus
- Blueberry scorch virus
- Butterbur mosaic virus
- Cactus virus 2
- Caper latent virus
- Carnation latent virus
- Chrysanthemum virus B
- Cole latent virus
- Coleus vein necrosis virus
- Cowpea mild mottle virus
- Cucumber vein-clearing virus
- Dandelion latent virus
- Daphne virus S
- Elderberry symptomless virus
- Garlic common latent virus
- Helenium virus S
- Helleborus mosaic virus
- Helleborus net necrosis virus
- Hippeastrum latent virus
- Honeysuckle latent virus
- Hop latent virus
- Hop mosaic virus
- Hydrangea chlorotic mottle virus
- Hydrangea latent virus
- Kalanchoë latent virus
- Ligustrum necrotic ringspot virus
- Lilac mottle virus
- Lily symptomless virus
- Melon yellowing-associated virus
- Mirabilis jalapa mottle virus
- Mulberry latent virus
- Muskmelon vein necrosis virus
- Narcissus common latent virus
- Nerine latent virus
- Passiflora latent virus
- Pea streak virus
- Phlox virus B
- Phlox virus M
- Phlox virus S
- Poplar mosaic virus
- Potato latent virus
- Potato virus M
- Potato virus P
- Potato virus S
- Red clover vein mosaic virus
- Shallot latent virus
- Sint-Jan's onion latent virus
- Strawberry pseudo mild yellow edge virus
- Sweet potato C6 virus
- Sweet potato chlorotic fleck virus
- Verbena latent virus
Virology
The virions are non enveloped, filamentous, 470-1000 nanometers (nm) or more in length and 12-13 nm in diameter.
The linear 5.8-9 kilobase genome is positive sense, single-stranded RNA. The 3’ terminus is polyadenylated. In some species the 5’ end is capped. The genome encodes 3 to 6 proteins including a coat protein located at the 3' end and an RNA-dependent RNA polymerase located at the 5' end of the genome.
Transmission
Infection is at times spread by aphids in a semi-persistent mode, that is, the vector is infective for a number of hours.(Pimentel) Some species are transmitted by Bemisia tabaci in a semi-persistent mode or through the seed.[1] Most species infect only a few hosts and cause infections with few or no symptoms, for example, American hop latent virus and lily symptomless virus. Some, such as blueberry scorch virus and poplar mosaic virus, cause serious illnesses. (Foster)
References
- ↑ Astier S. Principles of Plant Virology p78
External links
- Astier, S. Principles of Plant Virology Page 378. Online. February 13, 2008.
- Foster, Gary. "Carlavirus Isolation and RNA Extraction." Foster, Gary D. and Sally C. Taylorin. Plant Virology Protocols: From Virus Isolation to Transgenic Resistance. Page 145. 1998. Humana Press. Online. February 13, 2008.
- ICTV Database. Carlavirus. Online. February 28, 2008.
- Pimentel, David. Encyclopedia of Pest Management.Page 407. CRC Press. 2002. ISBN 0824706323/ Google Books. Online February 13, 2008.
- The Taxonomicon. Online. February 28, 2008.