1887

Abstract

Summary

The genomic relationship between porcine parvovirus (PPV) and several other autonomous parvoviruses was examined by restriction site and hybridization analysis. Restriction site maps of the PPV genome were prepared by digesting the doublestranded replicative form of the viral DNA with each of eight restriction enzymes. Subsequent comparison of such maps with those previously reported for PPV, canine parvovirus (CPV), feline panleukopenia virus (FPV), minute virus of mice (M VM), H-1 virus (H-1) and bovine parvovirus (BPV) revealed that while the maps of CPV, FPV, MVM and H-1 had a number of features in common, those of PPV and BPV were substantially different. For hybridization analysis radioactive probes prepared by nick translation of PPV, CPV and BPV genomes were tested under conditions of both low and high stringency for homologous hybridization and for heterologous hybridization with each of the other two viruses and with FPV. The results of these tests indicated homology among the genomes of PPV, CPV and FPV, but little or no homology between the genome of BPV and those of any of the other viruses tested. Additional tests with restriction fragments of PPV and a CPV probe indicated that heterologous hybridization was confined primarily to a segment of the genome between 1·85 and 2·7 kb from the 3′ end. Based on transcriptional maps previously determined for several of the rodent parvoviruses, this interval is likely to include part of the coding sequences for both non-structural and structural proteins and may be the genetic basis for the replicative as well as the antigenic similarities between PPV and both CPV and FPV.

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1987-03-01
2021-10-20
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