1887

International Journal of Systematic and Evolutionary Microbiology

Volume 69, Issue 3

Motilimonas pumila sp. nov., isolated from the gut of sea cucumber Apostichopus japonicus Free

Abstract

A facultatively anaerobic and Gram-negative bacterium, designated strain PLHSC7-2, was isolated from the gut of sea cucumber Apostichopusjaponicus that had been collected from the coastal area of Yantai, China. The cells were rod-shaped and motile by means of polar flagella. The novel isolate grew optimally at 28–30 °C, in the presence of 2.0–3.0 % (w/v) NaCl and at pH 7.0–7.5. The sole respiratory quinone was Q-8 and the major fatty acids were summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), C16 : 0 and C17 : 0. The predominant polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain PLHSC7-2 was phylogenetically affiliated with the genus Motilimonas , and exhibited sequence similarity of 96.2 % to Motilimonas eburnea YH6. The DNA G+C content was 45.5 mol%. On the basis of phenotypic , phylogenetic and genetic distinctiveness, strain PLHSC7-2 (=MCCC 1K03522=KCTC 62589) was classified as a novel species within the genus Motilimonas , for which the name Motilimonas pumila sp. nov. is proposed.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): 16S rRNA gene , gut of sea cucumber , Motilimonas pumila sp. nov. and polyphasic study
© 2019 IUMS
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2019-01-28
2021-05-11
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Motilimonas pumila sp. nov., isolated from the gut of sea cucumber Apostichopus japonicus
Int J Syst Evol Microbiol 69, 811 (2019); https://doi.org/10.1099/ijsem.0.003242
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