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Virus Genes. 2014 Aug;49(1):137-44. doi: 10.1007/s11262-014-1074-8. Epub 2014 May 14.

Analysis of the RdRp, intergenic and structural polyprotein regions, and the complete genome sequence of Kashmir bee virus from infected honeybees (Apis mellifera) in Korea.

Author information

1
Center for Honeybee Disease Control, Animal and Plant Quarantine Agency, 480 Anyang 6 dong, Anyang, 420-480, South Korea, eswar@mail.hallym.ac.kr.

Abstract

Kashmir bee virus (KBV) is one of the most common viral infections in honeybees. In this study, a phylogenetic analysis was performed using nine partial nucleotide sequences of RdRp and the structural polyprotein regions of South Korean KBV genotypes, as well as nine previously reported KBV genotypes from various countries and two closely related genotypes of Israeli acute paralysis virus (IAPV) and Acute bee paralysis virus (ABPV). The Korean KBV genotypes were highly conserved with 94-99 % shared identity, but they also shared 88-95 % identity with genotypes from various countries, and they formed a separate KBV cluster in the phylogenetic tree. The complete genome sequence of Korean KBV was also determined and aligned with previously reported complete reference genome sequences of KBV, IAPV, and ABPV to compare different genomic regions. The complete Korean KBV genome shared 93, 79, and 71 % similarity with the complete reference genomes of KBV, IAPV, and ABPV, respectively. The Korean KBV was highly conserved relative to the reference KBV genomes in the intergenic and 3' untranslated region (UTR), but it had a highly variable 5' UTR, whereas there was little divergence in the helicase and 3C-protease of the nonstructural protein, and the external domains of the structural polyprotein region. Thus, genetic recombination and geographical distance may explain the genomic variations between the Korean and reference KBV genotypes.

PMID:
24824301
DOI:
10.1007/s11262-014-1074-8
[Indexed for MEDLINE]

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