A member of a new Tospovirus species isolated in Italy from wild buckwheat ( Polygonum convolvulus)

A member of a new Tospovirus species isolated in Italy from wild buckwheat ( Polygonum convolvulus) Electron microscopy of extracts from diseased Polygonum convolvulus plants from Piedmont (Italy) revealed particles with the morphological features of a tospovirus. Sequencing of the full-length small (S) and medium (M) genome segments indicated that the virus is a member of a new Tospovirus species provisionally named Polygonum ringspot virus. A feature distinguishing it from members of other Tospovirus species was the presence of a very short intergenic region on the S segment lacking the potential for formation of the predicted hairpin structure involved in subgenomic expression. Antibodies made against purified nucleocapsids allowed serological comparison with other tospovirus isolates and revealed a relationship with tomato yellow ring virus, and to a lesser extent, to iris yellow spot virus. Serological tests detected the virus in various locations in northern and central Italy. The experimental host range was wide, although in nature the virus appeared restricted to two Polygonum species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

A member of a new Tospovirus species isolated in Italy from wild buckwheat ( Polygonum convolvulus)

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Springer Vienna
Copyright © 2008 by Springer-Verlag
Biomedicine; Infectious Diseases; Medical Microbiology ; Virology
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