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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 70, Issue 9

sp. nov., a psychrotolerant bacterium isolated from an Arctic station Free

Abstract

A pink-pigmented, non-motile, Gram-stain-negative, rod-shaped bacterium, designated RP-2-7, was obtained from soil sampled at the Arctic station, Spitsbergen, Svalbard, Norway. Cells were strictly aerobic, psychrotolerant, grew optimally at 15–20 °C and hydrolysed CM-cellulose. Phylogenetic analysis based on its 16S rRNA gene sequence revealed that strain RP-2-7 formed a lineage within the family and clustered with members of the genus . Its closest relative was KJ035 (97.6 % sequence similarity). The sequence similarities to other strains were ≤96.9 %. The principal respiratory quinone was MK-7 and the major polar lipids were phosphatidylethanolamine and an unidentified aminophospholipid. The predominant cellular fatty acids were summed feature 3 (C 7 and/or C 6), anteiso-C, iso-C, C 5 and summed featured 4 (iso-C I and/or anteiso-C B). The DNA G+C content was 62.8 mol%. In addition, the average nucleotide identity and DNA–DNA hybridization relatedness values between strain RP-2-7 and closely related strains were lower than species demarcation thresholds. Based on the resuls of genomic, chemotaxonomic, phenotypic and phylogenetic analyses, strain RP-2-7 represents novel species in the genus , for which the name sp. nov. is proposed. The type strain is RP-2-7 (=KACC 21670=NBRC 114391).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Arctic soil , Bacteroidetes , Hymenobacter polaris , Hymenobacteraceae and psychrotolerant
Funding
This study was supported by the:
  • National Research Foundation (KR) (Award 2019R1F1A1058501)
    • Principle Award Recipient: Jaisoo Kim
© 2020 The Authors
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2020-07-30
2024-04-23
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Hymenobacter polaris sp. nov., a psychrotolerant bacterium isolated from an Arctic station
Int J Syst Evol Microbiol 70, 4890 (2020); https://doi.org/10.1099/ijsem.0.004356
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