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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 70, Issue 4

Characterization of six clinical isolates of gen. nov., a novel genus related to the family and the three species sp. nov., sp. nov and sp. nov. Free

Abstract

Eight genetically related, Gram-negative bacterial strains, isolated from clinical specimens between 2012 and 2016, were submitted to Laboratories for species identification. The lack of species- or genus-level matches in curated 16S rRNA gene databases prompted us to undertake the polyphasic characterization of these so far undescribed organisms. Six isolates available for additional testing were oxidase negative, catalase positive, pleomorphic, Gram-negative rods displaying temperature-dependent motility and producing yellow-pigmented colonies with three distinct morphotypes: medium-sized shiny, large mucoid and agar-pitting. Biochemical reactions and sugar fermentation patterns were most similar to members of the genus . Fatty acid profiles were highly similar across all six organisms, with the major components being: C; C cyclo; C 3-OH/iso-C I; C ω7; and C ω7/C ω6. Whole-genome comparisons and multi locus sequence analysis (using the coding genes , , and ) suggest that the strains here described constitute three individual species within a novel genus related to the family . We propose for this novel taxon the name gen. nov., referring to the presentation of multiple characteristics typical of distinct genera within a single organism. Four isolates are representative of a single species: sp. nov (2016-Iso1, 2016-Iso2, type strain 2016-Iso3=DSM 110101=ATCC TSD-180 and 2013-Iso5). The remaining two isolates constitute the novel species sp. nov. (type strain 2016-Iso4=DSM 110102=ATCC TSD-182) and sp. nov. (type strain 2015-Iso6=DSM 110100=ATCC TSD-181). Our work provides the first formal characterization of the genus and forms the basis to study its taxonomic diversity.

  • Received:
  • Accepted:
  • Revised:
  • Published Online:
Keyword(s): Chimaeribacter arupi , Chimaeribacter californicus , Chimaeribacter coloradensis , clinical isolates , Enterobacterales and Yersiniaceae
Funding
This study was supported by the:
  • ARUP Institute for Clinical and Experimental Pathology (US) (Award NA)
    • Principle Award Recipient: Alessandro Rossi
© 2020 The Authors
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2020-03-06
2024-04-20
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Characterization of six clinical isolates of Chimaeribacter gen. nov., a novel genus related to the Yersiniaceae family and the three species Chimaeribacter arupi sp. nov., Chimaeribacter coloradensis sp. nov, and Chimaeribacter californicus sp. nov.
Int J Syst Evol Microbiol 70, 2703 (2020); https://doi.org/10.1099/ijsem.0.004094
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