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Lacinutrix jangbogonensis sp. nov., a psychrophilic bacterium isolated from Antarctic marine sediment and emended description of the genus Lacinutrix

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Abstract

A Gram-negative, strictly aerobic, non-motile, rod-shaped and psychrophilic bacterial strain, PAMC 27137T, was isolated from the marine sediment of the Ross Sea, Antarctica. Strain PAMC 27137T was observed to grow at 4–10 °C, at pH 6.5–7.5 and in the presence of 2.5–4.0 % (w/v) sea salts. Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain PAMC 27137T belongs to the genus Lacinutrix showing the high similarities with Lacinutrix mariniflava JCM 13824T (97.6 %) and Lacinutrix algicola JCM 13825T (97.1 %). Genomic relatedness analyses based on the average nucleotide identity and the genome-to-genome distance showed that strain PAMC 27137T is clearly distinguished from the most closely related Lacinutrix species. The major fatty acids (>5 %) were identified as iso-C15:1 G (19.9 %), iso-C15:0 (19.3 %), iso-C17:0 3-OH (11.3 %), summed feature 9 (C16:0 10-methyl and/or iso-C17:1 ω9c as defined by MIDI, 9.1 %), iso-C15:0 3-OH (7.5 %), and anteiso-C15:1 A (5.8 %). The polar lipids were found to consist of phosphatidylethanolamine, an unidentified aminolipid, an unidentified aminophospholipid, and five unidentified phospholipids. The major respiratory quinone was identified as MK-6. The genomic DNA G+C content was determined to be 32.1 mol%. Based on the data from this polyphasic taxonomic study, strain PAMC 27137T is considered to represent a novel species of the genus Lacinutrix, for which the name Lacinutrix jangbogonensis sp. nov. is proposed. The type strain is PAMC 27137T (=KCTC 32573T=JCM 19883T).

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Acknowledgments

We thank the crew of the R/V ARAON support at sea. This work was supported by Korea Polar Research Institute (Grant PM11030 and PE14080).

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Authors and Affiliations

  1. Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 406-840, Republic of Korea

    Yung Mi Lee, Chung Yeon Hwang, Inae Lee, You-Jung Jung, Yirang Cho, Kiwoon Baek, Soon Gyu Hong, Ji-Hee Kim & Hong Kum Lee

  2. School of Biological Sciences, College of Natural Science, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 151-747, Republic of Korea

    Yung Mi Lee & Jongsik Chun

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  1. Yung Mi Lee
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Correspondence to Hong Kum Lee.

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Lee, Y.M., Hwang, C.Y., Lee, I. et al. Lacinutrix jangbogonensis sp. nov., a psychrophilic bacterium isolated from Antarctic marine sediment and emended description of the genus Lacinutrix . Antonie van Leeuwenhoek 106, 527–533 (2014). https://doi.org/10.1007/s10482-014-0221-5

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