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Turnip vein-clearing virus, from pathogen to host expression profile
1Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK 74078, USA.
Molecular Plant Pathology
|June 24, 2010
Summary
Turnip vein-clearing virus (TVCV) is a positive-sense RNA virus in the Tobamovirus genus. This stable, rod-shaped virus primarily infects crucifer family plants, including Arabidopsis thaliana.
Area of Science:
- Plant virology
- Molecular genetics
- RNA virus taxonomy
Background:
- Turnip vein-clearing virus (TVCV) belongs to subgroup 3 of the Tobamovirus genus.
- It is classified within the alphavirus-like supergroup of positive-sense RNA viruses.
Purpose of the Study:
- To describe the taxonomic classification, physical properties, and host range of Turnip vein-clearing virus (TVCV).
Main Methods:
- Taxonomic classification based on viral RNA and protein structure.
- Analysis of virion morphology and composition.
- Identification of host plant species.
Main Results:
- TVCV virions are rod-shaped, composed of 17 kDa capsid proteins and 6.3 knt RNA (5% of virion mass).
- Virions exhibit remarkable stability, persisting for years.
- Crucifer family plants, notably Arabidopsis thaliana, are excellent hosts.
- No non-mechanical transmission vectors have been identified.
Conclusions:
- TVCV is a stable Tobamovirus with a specific host range within the crucifer family.
- Its physical and genetic characteristics align with its classification.
- Understanding TVCV's properties is crucial for plant disease management and research, especially in model organisms like Arabidopsis thaliana.
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