Abstract:
:The nucleotide sequences of the entire F genes of two isolates of the pigeon PMV-1 (PPMV-1) variant of Newcastle disease virus (NDV) were determined using RTPCR. The deduced amino acid sequences of the F0 protein showed four differences between isolate 760/83 which had been passaged 4 times in chickens and gave an intravenous pathogenicity index in chickens (IVPI) of 2.01 and isolate 1168/84 which had received six passages in chickens and had an IVPI of 0.00. The F genes of virus from two passage levels of isolate 1447/84, 0 with IVPI value 0.00 and six with IVPI value 0.58, were partially sequenced to cover the areas of variation between 760/83 and 1168/84. The two passage levels of 1447/84 showed identical sequences in these areas which in turn were identical of those of 760/83. It was concluded that the recorded differences in intravenous pathogenicity were unlikely to be associated with differences in the primary structure of the F0 protein. Phylogenetic comparisons of the F gene sequences of the two PPMV-1 viruses with those published for other NDV strains and isolates showed that the PPMV-1 viruses formed a new fourth lineage but were closely related to strain Warwick with which they presumably shared a common origin.
journal_name
Arch Viroljournal_title
Archives of virologyauthors
Collins MS,Strong I,Alexander DJdoi
10.1007/BF01718322subject
Has Abstractpub_date
1996-01-01 00:00:00pages
635-47issue
3-4eissn
0304-8608issn
1432-8798journal_volume
141pub_type
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