Recombination in West Nile Virus: minimal contribution to genomic diversity.

Abstract:

:Recombination is known to play a role in the ability of various viruses to acquire sequence diversity. We consequently examined all available West Nile virus (WNV) whole genome sequences both phylogenetically and with a variety of computational recombination detection algorithms. We found that the number of distinct lineages present on a phylogenetic tree reconstruction to be identical to the 6 previously reported. Statistically-significant evidence for recombination was only observed in one whole genome sequence. This recombination event was within the NS5 polymerase coding region. All three viruses contributing to the recombination event were originally isolated in Africa at various times, with the major parent (SPU116_89_B), minor parent (KN3829), and recombinant sequence (AnMg798) belonging to WNV taxonomic lineages 2, 1a, and 2 respectively. This one isolated recombinant genome was out of a total of 154 sequences analyzed. It therefore does not seem likely that recombination contributes in any significant manner to the overall sequence variation within the WNV genome.

journal_name

Virol J

journal_title

Virology journal

authors

Pickett BE,Lefkowitz EJ

doi

10.1186/1743-422X-6-165

subject

Has Abstract

pub_date

2009-10-12 00:00:00

pages

165

issn

1743-422X

pii

1743-422X-6-165

journal_volume

6

pub_type

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