Marinobacter halodurans Sp. Nov., a halophilic bacterium isolated from sediment of a salt flat

Yeonjae Yoo, Hanbyul Lee, Bong Oh Kwon, Jong Seong Khim, Seungwoo Baek, Duleepa Pathiraja, Byeonghyeok Park, In Geol Choi, Gyu Hyeok Kim, Beom Seok Kim*, Jae Jin Kim

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    A Gram-staining-negative, aerobic, cream-coloured, marine bacterium, with rod-shaped cells, designated strain YJ-S3-2T, was isolated from salt flat sediment of Yongyu-do, Republic of Korea. YJ-S3-2T grew at pH 5.0–9.0 (optimum pH 7.0), 4–45 °C (optimum 30 °C) and with 1–18% (w/v) NaCl (optimum 6%). The results of 16S rRNA gene sequence analysis indicated that YJ-S3-2T was closely related to Marinobacter segnicrescens SS011B1-4T (97.0%) followed by, 'Marinobacter nanhaiticus' D15-8W (96.7%), Marinobacter bryozoorum 50-11T (96.7%), Marinobacter koreensis DSMZ 179240T T (96.5%) and Marinobacter bohaiensis T17T (96.5%). The average nucleotide identity (ANI) and the genome to genome distance calculator (GGDC) estimate values between YJ-S3-2T and related type strains were 73.7–79.8 and 19.9–22.5%, and also 73.5 and 20.7% with Marinobacter hydro-carbonoclasticus. YJ-S3-2T was characterized as having Q-9 as the predominant respiratory quinone and the principal fatty acids (>10%) were C16:0 (22.3%), summed feature 9 (C17:1 iso ω9c/C16:0 10-methyl, 13.8%) and 3 (C16:1 ω7c/C16:1 ω6c, 11.9%). The polar lipids consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, two unidentified aminolipids and two unidentified phospholipids. The DNA G+C content of YJ-S3-2T is 60.9 mol%. On the basis of the polyphasic taxonomic evidence presented in this study, YJ-S3-2T should be classified as representing a novel species within the genus Marinobacter, for which name Marinobacter halodurans sp. nov. is proposed, with the type strain YJ-S3-2T (=KACC 19883T=KCTC 62937T=JCM 33109T).

    Original languageEnglish
    Article number004530
    Pages (from-to)6294-6300
    Number of pages7
    JournalInternational Journal of Systematic and Evolutionary Microbiology
    Volume70
    Issue number12
    DOIs
    Publication statusPublished - 2020

    Bibliographical note

    Funding Information:
    This research was funded by the Ministry of Oceans and Fisheries of Korea (MOF) [20170318 and 20170325], and a Korea University Grant.

    Publisher Copyright:
    © 2020 The Authors.

    Keywords

    • Halophilic bacteria
    • Marinobacter
    • Proteobacteira
    • Salt flat

    ASJC Scopus subject areas

    • Microbiology
    • Ecology, Evolution, Behavior and Systematics

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