Hahella chejuensis gen. nov., sp. nov., an extracellular-polysaccharide-producing marine bacterium

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Hahella chejuensis gen. nov., sp. nov., an extracellular-polysaccharide-producing marine bacterium
Hong Kum Lee; Jong Sik Chun; Eun Young Moon; Sung Hwan Ko; Deuk Soo Lee; Hyun Sang Lee; Kyung Sook Bae
Bibliographic Citation
International Journal of Systematic and Evolutionary Microbiology, vol. 51, no. 2, pp. 661-666
Publication Year
A bacterial strain, designated 96CJ10356T, which produced abundant extracellular polysaccharides and red pigment was isolated from marine sediment collected from Marado, Cheju Island, Republic of Korea. The organism is Gram-negative, aerobic, rod-shaped and motile. Growth was not observed in the absence of NaCl, and was optimal at an NaCl concentration of 2%. The strain contained oxidase and catalase, and was able to hydrolyse aesculin and gelatin. The major cellular fatty acids were saturated or monounsaturated straight-chain fatty acids. An almost complete 16S rDNA sequence of the test strain was determined. Phylogenetic analysis based on the neighbour-joining and Fitch-Margoliash methods indicated that the organism formed a distinct phyletic line within the γ Proteobacteria. This relationship was also supported by sequence comparison, as no valid bacterial species showed more than 90% sequence homology with the isolate. It is clear from polyphasic evidence that the isolate merits the status of genus in the γ subclass of the Proteobacteria, and the name Hahella chejuensis gen. nov., sp. nov. is proposed for the marine isolate 96CJ10356T (= KCTC 2396T = IMSNU 11157T).
Hahella chejuensis gen. nov.polyphasic taxonomy16S rDNA sequencing
Microbiology Soc
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