Abstract
A taxonomic study was carried out on strain D104T, which was isolated from deep-sea subsurface sediment sample from the Arctic Ocean. The bacterium was found to be Gram-negative, oxidase negative and catalase weakly positive, rod shaped, motile by means of polar flagellum. The organism grows between 4 and 37 °C (optimum 25–28 °C) and 0.5–6 % NaCl (optimum 3 %). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain D104T belongs to the genus Marinomonas, with highest sequence similarities of 97.7 % to Marinomonas ushuaiensis DSM 15871T, followed by M. dokdonensis DSW10-10T (96.9 %), M. arenicola KMM 3893T (96.7 %), M. arctica 328T (96.6 %) and other 18 species of the genus Marinomonas (94.4–96.5 %). The average nucleotide identity and estimated DNA–DNA hybridization values between strain D104T and M. ushuaiensis DSM 15871T were 84.24 % and 20.80 ± 2.33 % respectively. The principal fatty acids were C16:0, sum in feature 3 (C16:1 ω7c/C16:1 ω6c), sum in feature 8 (C18:1 ω7c/C18:1 ω6c) and C12:1 3OH. The G + C content of the chromosomal DNA was determined to be 44.8 mol%. The respiratory quinone was found to be Q8 (100 %). Polar lipids include phosphatidylglycerol and phosphatidylethanolamine as major phospholipids and aminolipid and phospholipid as minor components. The results of the genotypic and phenotypic analyses indicate that strain D104T represents a novel species of the genus Marinomonas, for which the name Marinomonas profundimaris sp. nov. is proposed, with the type strain D104T (=MCCC 1A07573T = LMG 27696T).
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Abbreviations
- MCCC:
-
Marine Culture Collection of China
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Acknowledgments
This work was financially supported by Public Welfare Project of SOA (201005032), COMRA program (No. DY125-15-R-01), National Natural Science Foundation of China (41206158), the China Polar Environment Investigation and Estimate Project (2012-2015) and National Infrastructure of Natural Resources for Science and Technology Program of China (No. NIMR-2013-9).
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Xiuhua Bai and Qiliang Lai have contributed equally to this work.
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Bai, X., Lai, Q., Dong, C. et al. Marinomonas profundimaris sp. nov., isolated from deep-sea sediment sample of the Arctic Ocean. Antonie van Leeuwenhoek 106, 449–455 (2014). https://doi.org/10.1007/s10482-014-0213-5
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DOI: https://doi.org/10.1007/s10482-014-0213-5