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

Research output: Contribution to journalArticlepeer-review

2 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

Keywords

  • Halophilic bacteria
  • Marinobacter
  • Proteobacteira
  • Salt flat

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics

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