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ABSTRACT: Typing of 13 strains of fluorescent pseudomonads from the Belarusian collection of nonpathogenic microorganisms (BIM) by ERIC-PCR
and BOX-PCR revealed high level of genetic heterogeneity in bacteria, most of which have been previously identified as Pseudomonas fluorescens according to the classical scheme. Evaluation of the similarities of the 16S rRNA gene sequences and their phylogenetic analysis
excluded affiliation of the bacteria under study within the same species and allowed them to be distributed within three relatively
distant clusters of the genus Pseudomonas phylogenetic tree. While eight strains fell into the phylogenetic group of P. fluorescens, only one of them could be identified as P. fluorescens. Four strains clustered within the P. vancouverensis phylogenetic group, formed by new species, which have been described mainly according to the evaluation of genome relationships.
One bacterium was related to a stable branch that did not contain any type strains of the known Pseudomonas spp. These results indicate taxonomic heterogeneity of collection strains of the fluorescent pseudomonads and demonstrate
the necessity of identification of them considering the requirements of phylogenetic bacterial taxonomy.
–genotyping–phylogeny–16S rRNA gene–identification
Microbiology 04/2012; 80(1):89-95. · 0.65 Impact Factor