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Molecular characterization and taxonomy of grapevine leafroll-associated virus 7

GND
1059102374
Zugehörigkeit
Julius Kühn-Institute (JKI), Institute for Plant Protection in Fruit Crops and Viticulture, Germany
Jelkmann, Wilhelm;
Zugehörigkeit
Julius Kühn-Institute (JKI), Institute for Plant Protection in Fruit Crops and Viticulture, Germany
Mikona, Cord;
Zugehörigkeit
Julius Kühn-Institute (JKI), Institute for Plant Protection in Fruit Crops and Viticulture, Germany; Department of Plant Protection and Applied Microbiology, University of Bari ‘‘Aldo Moro’’, Bari, Italy
Turturo, Camilla;
Zugehörigkeit
Julius Kühn-Institute (JKI), Institute for Plant Protection in Fruit Crops and Viticulture, Germany; Institute of Plant Virology of the CNR, UOS Bari, Italy
Navarro, Beatriz;
Zugehörigkeit
Julius Kühn-Institute (JKI), Institute for Plant Protection in Fruit Crops and Viticulture, Germany; Centre for Plant Health, Canadian Food Inspection Agency, Sidney, Canada
Rott, Mike E.;
Zugehörigkeit
German Collection of Microorganisms and Cell Cultures, Brunswick, Germany
Menzel, Wulf;
Zugehörigkeit
Institute of Plant Virology of the CNR, UOS Bari, Italy
Saldarelli, Pasquale;
Zugehörigkeit
Institute of Plant Virology of the CNR, UOS Bari, Italy
Minafra, Angelantonio;
Zugehörigkeit
Department of Plant Protection and Applied Microbiology, University of Bari ‘‘Aldo Moro’’, Bari, Italy
Martelli, Giovanni P.

The complete nucleotide sequence of an Albanian isolate of grapevine leafroll-associated virus 7 (GLRaV-7-Alb) was determined. The viral genome consists of 16,404 nucleotides and has nine open reading frames (ORFs) that potentially encode proteins, most of which are typical for members of the family Closteroviridae. Only the 25-kDa (ORF8) and 27-kDa (ORF9) proteins had no apparent similarity to other viral proteins in the sequence databases. The genome structure of GLRaV-7-Alb closely resembles that of little cherry virus 1 and cordyline virus 1. In phylogenetic trees constructed with HSP70h sequences, these three viruses cluster together in a clade next to that comprising members of the genus Crinivirus, to which they are more closely related than to the clostero- and ampeloviruses. The molecular properties of these three viruses differ sufficiently from those of members of the three extant genera of the family Closteroviridae to warrant their classification in a novel genus.

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