Characterization of four isolates of Bombyx mori nucleopolyhedrovirus

Characterization of four isolates of Bombyx mori nucleopolyhedrovirus Bombyx mori nucleopolyhedroviruses (BmNPVs), isolated from a sericultural Korean farm, were purified and characterized by their DNA restriction pattern, virus replication, polyhedra production and gene structures. The Eco R I and Sal I fragments showed similar overall patterns with minor difference but distinguishable patterns in each isolate. There was no significant difference in the virus replication pattern, yield of total polyhedra production and polyhedra morphology, but the yield of released polyhedra by BmNPV-K1 in Bm5 cells was 2 to 5 times higher than that of other isolates. In comparative studies of p10 gene, BmNPV-K1 and K3 had same structure and they encoded a protein consisting of 94 amino acids. Although BmNPV-K2 encoded the same length of amino acids with BmNPV-K1 and K3, it had different structure, and BmNPV-K4 had the p10 gene encoding 70 amino acids. Archives of Virology Springer Journals

Characterization of four isolates of Bombyx mori nucleopolyhedrovirus

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