Open AccessYersinia pekkanenii sp. nov.
Author(s) -
Anna Murros-Kontiainen,
Per Johansson,
Taiiskanen,
Maria FredrikssonAhomaa,
Hannu Korkeala,
Johanna Björkroth
Publication year - 2010
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijs.0.019984-0
Subject(s) - biology , housekeeping gene , phylogenetic tree , microbiology and biotechnology , 16s ribosomal rna , yersinia , yersinia pseudotuberculosis , genetics , dna–dna hybridization , gene , phylogenetics , enterobacteriaceae , bacteria , virulence , escherichia coli , gene expression
The taxonomic position of three strains from water, soil and lettuce samples was studied by using a polyphasic taxonomic approach. The strains were reported to lack the virulence-encoding genes inv and virF in a previous study. Controversially, API 20 E and some other phenotypic tests suggested that the strains belong to Yersinia pseudotuberculosis, which prompted this polyphasic taxonomic study. In both the phylogenetic analyses of four housekeeping genes (glnA, gyrB, recA and HSP60) and numerical analyses of HindIII and EcoRI ribopatterns, the strains formed a separate group within the genus Yersinia. Analysis of the 16S rRNA gene sequences showed that the strains were related to Yersinia aldovae and Yersinia mollaretii, but DNA-DNA hybridization analysis differentiated them from these species. Based on the results of the phylogenetic and DNA-DNA hybridization analyses, a novel species, Yersinia pekkanenii sp. nov., is proposed. The type strain is ÅYV7.1KOH2(T) ( = DSM 22769(T) = LMG 25369(T)).
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