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http://dx.doi.org/10.7845/kjm.2013.009

Isolation and Identification of Oceanisphaera sp. JJM57 from Marine Red Algae Laurencia sp. (Ceramiales: Rhodomelaceae)  

Kim, Man-Chul (Korea Fisheries Resources Agency Jeju Station)
Dharaneedharan, S. (Department of Aquatic Biomedical Sciences and Marine and Envioronmental Institute, Jeju National University)
Moon, Young-Gun (Haerim Fucoidan Co., Ltd.)
Kim, Dong-Hwi (Department of Aquatic Biomedical Sciences and Marine and Envioronmental Institute, Jeju National University)
Son, Hong-Joo (Department of Life Science and Environmental Biochemistry, Pusan National University)
Heo, Moon-Soo (Department of Aquatic Biomedical Sciences and Marine and Envioronmental Institute, Jeju National University)
Publication Information
Korean Journal of Microbiology / v.49, no.1, 2013 , pp. 58-63 More about this Journal
Abstract
A taxonomic study was carried out to assess the phylogenetic characteristics of isolate JJM57 from marine red algae Laurencia sp. collected from intertidal zone in Jeju Island, South Korea. Comparative analysis of 16S rRNA gene sequence shows that this isolate belongs to the genus Oceanisphaera. It shows 98.02% and 97.7% sequence similarity with Oceanisphera litoralis DSM $15406^T$ and Oceanisphera donghaensis KCTC $12522^T$, respectively. Strain JJM57 is a Gram-negative, aerobic, moderately halophilic bacterium able to grow in different NaCl concentration ranges from 0.5 to 8.0% and at varying temperatures from 4 to $37^{\circ}C$. Sharing some of the physiological and biochemical properties with O. litoralis and O. donghaensis, JJM57 strain differs in the utilization of ethanol, proline, and alanine. The G+C contents of the strain JJM57 is 61.94 mol% and it is rich in $C_{16:1}$ ${\omega}7c$ and/or iso-$C_{15:0}$ 2-OH, $C_{16:0}$, and $C_{18:1}$ ${\omega}7c$ fatty acids. The DNA-DNA relatedness data separates the strain JJM57 from other species such as O. litoralis and O. donghaensis. On the basis of these polyphasic evidences, present study proposed that strain JJM57 (=KCTC 22371 =AM983543 =CCUG 60764) represents a novel bacterial species of Oceanisphaera.
Keywords
16S rRNA; Oceanisphera litoralis; Oceanisphera donghaensis; Oceanisphaera sp.; Red algae;
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