Abstract
For members of the family Parvoviridae, rescue of infectious virus from recombinant plasmid is usually done in cultured cells. In this study, the whole genome of the pathogenic Muscovy duck parvovirus (MDPV) strain YY was cloned into the pBluescript II (SK) vector, generating recombinant plasmid pYY. With the aid of a transfection reagent, pYY plasmid was inoculated into 11-day-old embryonated Muscovy duck eggs via the chorioallantoic membrane route, resulting in the successful rescue of infectious virus and death of the embryos. The rescued virus exhibited pathogenicity in Muscovy ducklings similar to that of its parental strain, as evaluated based on the mortality rate. The results demonstrate that plasmid transfection in embryonated Muscovy duck eggs is a convenient and efficacious method for rescue of infectious MDPV in comparison to transfection of primary cells, which is somewhat time-consuming and laborious.
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