1887

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 70, Issue 3

sp. nov., a bacterium isolated from Arctic marine sediment Free

Abstract

An aerobic, Gram-stain-negative, motile, rod or long-rod-shaped bacterial isolate, strain MK6-18, was isolated from a marine sediment sample from Kongsfjorden, Arctic. The bacterium grew optimally at 20 °C, pH 7.0 and in the presence of 1.0–2.0 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain MK6-18 belonged to the genus . Its closest phylogenetic neighbour was NH52J showing 96.97 % 16S rRNA gene sequence similarity. The genome of strain MK6-18 is 4.2 Mb long in size with a G+C content of 59.5 mol%. The average nucleotide identity value between the genomes of strain MK6-18 and NH52J, was 78.0 %. Similar to other species of the genus , strain MK6-18 had ubiquinone 10 as the predominant ubiquinone and C, C, summed feature 3 (Cω7cω6) and summed feature 8 (Cω7cω6) as the major fatty acids. The polar lipid pattern consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine; one unidentified polar lipid, one unidentified aminolipid and one unidentified lipid were also detected. This is the first time that a member of the genus has been isolated from the Arctic, which may promote the study of the distribution characteristics and environmental adaptability of this genus. On the basis of the data provided here, strain MK6-18 should be classed as representing a novel species of the genus , for which the name sp. nov. is proposed. The type strain is MK6-18 (=CCTCC AB 2018219=KCTC 72187).

  • Received:
  • Accepted:
  • Revised:
  • Published Online:
Keyword(s): arctic , Roseovarius arcticus , sediment and polyphasic taxonomy
Funding
This study was supported by the:
  • the Chinese Polar Scientific Strategy Research Fund (Award IC201706)
    • Principle Award Recipient: Fang Peng
  • the National Natural Science Foundation of China (Award Grant No. 31270538)
    • Principle Award Recipient: Fang Peng
  • the R&D Infrastructure and Facility Development Program of the Ministry of Science and Technology of the People’s Republic of China (Award Grant No. NIMR-2019-8)
    • Principle Award Recipient: Fang Peng
  • the National Key R&D Program of China (Award 2018YFC1406701)
    • Principle Award Recipient: Fang Peng
© 2020 The Authors
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2020-03-02
2024-10-04
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Roseovarius arcticus sp. nov., a bacterium isolated from Arctic marine sediment
Int J Syst Evol Microbiol 70, 2072 (2020); https://doi.org/10.1099/ijsem.0.004018
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