Molecular characterization of two distinct strains of blueberry scorch virus (BlScV) in northern Italy
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During blueberry scorch virus (BlScV) surveys of highbush blueberries in Italy between 2005 and 2010, we initially discovered infected orchards only in Piedmont. Since 2009, however, three infected orchards have also been found in Trentino, where a new host species, Vaccinium ashei, was found to be infected by BlScV. Molecular characterization of isolates during the study period suggests that two very distinct epidemics are now present in Italy: the Piedmont isolates belong to a new BlScV strain, whereas the Trentino isolates are almost identical to the Washington State strain.
KeywordsSupplementary Appendix Epidemiological Aspect Highbush Blueberry Maximum Composite Likelihood Method Italian Isolate
This research was supported by a grant from the Regione Piemonte (MIRVI 2008-2010) in collaboration with DIVAPRA, Entomology Department, University of Turin, and Consorzio Ricerca e Sperimentazione per L’Orticoltura Piemontese (CReSO). We wish to thank CReSO for providing technical and orchard assistance. Thanks are also due to Alessandro Frontuto (Ufficio Fitosanitario Provinciale di Trento) and Daniele Pettiti for their help with identification of the infected orchards.
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