1887

Abstract

and have similar phenotypes and genomes making rapid differentiation of these two species difficult. The first standard multilocus sequence analysis (MLSA) scheme for the identification of these species is described. A collection of 45 representative isolates from different geographical regions and hosts was examined using segments of the housekeeping genes , and . Overall, the closest phylogenetic neighbours of these species were and . and formed separate species clusters on the basis of each gene, suggesting that these genes are useful as identification markers. These species clusters arose by the accumulation of point mutations. The gene showed the highest resolution for differentiating and . The maximum interspecies gene sequence similarity was 91 %. Clearly, strains were more heterogeneous than strains at the three loci. It is suggested that vibrio species may be defined on the basis of MLSA data. A vibrio species was defined as a group of strains forming a monophyletic group on the basis of these loci and with an intraspecific sequence similarity of at least 95 %. and isolates can be readily identified through the open database resource ‘The Taxonomy of Vibrios’ (http://www.taxvibrio.lncc.br/).

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2008-03-01
2019-10-21
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Supplements

vol. , part 3, pp. 617 - 621

A description of the methods used for recombination analysis.

Strain list.

Amplification and sequencing primers.

Features of the genes.

Signatures of and for the , and genes.

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