Aestuariibaculum marinum sp. nov., a marine bacterium isolated from seawater in South Korea

A Gram-negative, non-motile, aerobic bacterium, designated strain IP7 T , was isolated from seawater at the shore of the Incheon Eulwang-ri beach, South Korea. Cells of strain IP7 T are straight or slightly rod-shaped and colonies are round, convex and orange-yellow. Strain IP7 T is flexirubin-negat...

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Bibliographic Details
Published in:The journal of microbiology 2018, 56(9), , pp.614-618
Main Authors: Choi, Jiwon, Lee, Dongwook, Jang, Jun Hyeong, Cha, Seho, Seo, Taegun
Format: Article
Language:English
Subjects:
Aerobic bacteria
Bacteria
Biomedical and Life Sciences
Carotenoids
Catalase
Deoxyribonucleic acid
DNA
Fatty acids
Glycolipids
Hybridization
Life Sciences
Lipids
Menaquinones
Microbial Systematics and Evolutionary Microbiology
Microbiology
New species
Nucleotide sequence
Phosphatidylethanolamine
Phylogeny
Quinones
rRNA 16S
Seawater
Sequencing
Similarity
Sodium chloride
생물학
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Summary:A Gram-negative, non-motile, aerobic bacterium, designated strain IP7 T , was isolated from seawater at the shore of the Incheon Eulwang-ri beach, South Korea. Cells of strain IP7 T are straight or slightly rod-shaped and colonies are round, convex and orange-yellow. Strain IP7 T is flexirubin-negative, mild halophile, catalase-and oxidase-positive, and produces a yellow-orange carotenoid pigment. Growth is optimal at 30°C, pH 7–9, and 2.0–4.0% NaCl (w/v). On the basis of 16S rRNA gene sequence similarity, strain IP7 T is affiliated with genus Aestuariibaculum in the family Flavobacteriaceae, the closest relative being Aestuariibaculum suncheonense SC17 T (98.3% sequence similarity). The DNA G + C content of the novel strain is 37.4 mol%. The only quinone is MK-6 menaquinone. Iso-branched C 15:0 , iso-branched C 15:1 G, and iso-branched C 17:0 3-OH are major fatty acids. The major polar lipids are phosphatidylethanolamine, an unidentified aminoglycolipid and two unidentified glycolipids. The DNA-DNA hybridization value of strain IP7 T with Aestuariibaculum suncheonense SC17 T is 28.87%. Based on the collective DNA-DNA hybridization, biochemical, phylogenetic and physiological data, we report a novel species of the genus Aestuariibaculum for which the name Aestuariibaculum marinum sp. nov. is proposed. The type strain is IP7 T (= KCTC 52521 T = JCM 31725 T ).
ISSN:1225-8873
1976-3794
DOI:10.1007/s12275-018-8134-z