Hasllibacter halocynthiae gen. nov., sp. nov., a nutriacholic acid-producing bacterium isolated from the marine ascidian Halocynthia roretzi
- Hasllibacter halocynthiae gen. nov., sp. nov., a nutriacholic acid-producing bacterium isolated from the marine ascidian Halocynthia roretzi
- 김성훈; 양현옥; 신윤경; 권학철
- 멍게; 신종 미생물; 박테리아
- Issue Date
- International journal of systematic and evolutionary microbiology
- VOL 62, 624-631
- A Gram-negative, aerobic, ovoid to rod-shaped bacterial strain, KME 002T was isolated from a marine ascidian, Halocynthia roretzi, off the coast of Gangneung, Korea. Phylogenetic analyses based on 16S rRNA gene sequences showed that this strain belonged to the family Rhodobacteraceae in the class Alphaproteobacteria and was closely related to the type strains of Dinoroseobacter shibae, Roseovarius crassostreae and Pseudoruegeria aquimaris with 95.0, 94.7 and 94.5 % 16S rRNA gene sequence similarities, respectively. KME 002T was an obligately halophilic bacterium requiring 1 to 5 % (w/v) NaCl, with an absolute requirement for magnesium chloride for growth. Cells were motile by means of a single polar flagellum and showed budding fission. The predominant cellular fatty acid of the isolate was C18 : 1ω7c and Q-10 was the major ubiquinone. The DNA G+C content of the strain was 71.6 mol%. The major secondary metabolites from cultures in liquid medium were cholic acid derivatives, including 3α,12α-hydroxy-3-keto-glycocholanic acid, 12-hydroxy-3-keto-glycocholanic acid, nutriacholic acid and deoxycholic acid. These characteristics determined in this polyphasic study suggest that strain KME 002T represents a novel species in a new genus of the family Rhodobacteraceae. The name Hasllibacter halocynthiae gen. nov., sp. nov. is proposed for this isolate, and the type strain is KME 002T ( = JCM 16214T = KCCM 90082T).
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