Luteibaculum oceani gen. nov., sp. nov., a carotenoid-producing, lipolytic bacterium isolated from surface seawater, and emended description of the genus Owenweeksia Lau et al. 2005

Mariyam Shahina, Asif Hameed, Shih-Yao Lin, Wei-An Lai, You-Cheng Liu, Yi-Han Hsu, Chiu-Chung Young

¹Department of Soil & Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung 402, Taiwan

²Agricultural Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan

Correspondence
Chiu-Chung Young ccyoung{at}mail.nchu.edu.tw

International Journal of Systematic and Evolutionary Microbiology 2013; 63(Pt 12):4765–4770 · https://doi.org/10.1099/ijs.0.054635-0

Abstract

A yellow-pigmented, Gram-staining-negative, strictly aerobic, rod-shaped, non-flagellated, non-spore-forming, lipolytic and gliding marine bacterium designated strain CC-AMWY-103B^T was isolated from surface seawater collected at Kending, Taiwan. The strain shared the highest 16S rRNA gene sequence similarity of 89.4 % with Owenweeksia hongkongensis JCM 12287^T and Brumimicrobium mesophilum YH207^T, and established a distinct phyletic lineage associated with the members of the family Cryomorphaceae. The polar lipid profile of strain CC-AMWY-103B^T consisted of phosphatidylethanolamine, ten unidentified lipids and four unidentified aminolipids. The major fatty acids (>5 % of the total) were iso-C_15 : 0, iso-C_15 : 1 G, C_15 : 1ω5c, iso-C_17 : 0 3-OH and C_15 : 1ω8c. The DNA G+C content was 44.2±0.3 mol%. The predominant respiratory quinone was menaquinone-6 (MK-6) and the major polyamine was spermidine. Based on its genetic, phylogenetic, phenotypic and chemotaxonomic distinctiveness, strain CC-AMWY-103B^T is proposed to represent a distinct member of the family Cryomorphaceae, for which the name Luteibaculum oceani gen. nov., sp. nov. is proposed; the type strain of Luteibaculum oceani is CC-AMWY-103B^T ( = JCM 18817^T = BCRC 80551^T). An emended description of the genus Owenweeksia is also proposed.