Pathogen Profiles

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Molecular Plant Pathology - Pathogen Profiles


Turnip vein-clearing virus - from pathogen to host expression profile

Ulrich Melcher

Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK 74078, USA


Taxonomy: Turnip vein-clearing virus (TVCV) is a member of subgroup 3 of the Tobamovirus genus and is thus a member of the alphavirus-like supergroup of positive sense RNA-containing viruses.
Physical Properties: Virions, typical of tobamoviruses, are rod-shaped and consist of a single species of four-helix bundle capsid proteins of 17 kDa helically arranged around a 6.3 knt RNA which accounts for 5% of the virion mass. Virions are stable for years.
Hosts: Members of the crucifer family are excellent hosts. Particularly noteworthy is that hosts include the model plant for molecular genetics, Arabidopsis thaliana. No non-mechanical vectors of transmission are known.
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