alexa Genomic diversity among bovine herpesvirus 4 field isolates.
Microbiology

Microbiology

Clinical Microbiology: Open Access

Author(s): Bublot M, Wellemans G, Van Bressem MF, Dubuisson J, Pastoret PP,

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Abstract Twenty-eight Belgian field isolates of bovine herpesvirus 4 (BHV-4) coming from a variety of clinical diseases have been studied by restriction analysis and Southern blot hybridization. The unique central part of the genome was very well conserved among strains; only one variation in a restriction site was detected in 3 isolates which contain an additional EcoRI site also present in the LVR 140 strain; three regions in the unique part of the genome varied in size, one of these was highly variable. The polyrepetitive fragments (prDNAs) situated in tandem at both genomic ends were also variable in size; most of the isolates exhibited prDNA units of one size (major prDNA) and some of them also contained prDNA units having a different size and present in a lower amount (minor prDNA) than the major prDNA. Other isolates possessed two major prDNAs of different sizes which were both present in the same genome. The left junction fragment between the unique and the repeated sequences was also highly variable. No relationship could be established between the restriction pattern and the origin of the isolates; patterns of isolates coming from the same herd were similar except in one case. This study provides a view of the genome variability existing between BHV-4 field isolates.
This article was published in Arch Virol and referenced in Clinical Microbiology: Open Access

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