S-Space College of Natural Sciences (자연과학대학) Dept. of Biological Sciences (생명과학부) Journal Papers (저널논문_생명과학부)
Idiomarina gen. nov., comprising novel indigenous deep-sea bacteria from the Pacific Ocean, including descriptions of two species, Idiomarina abyssalis sp nov and Idiomarina zobellii sp nov.
- Ivanova, EP; Romanenko, LA; Chun, Jongsik; Matte, MH; Matte, GR; Mikhailov, VV; Svetashev, VI; Huq, A; Maugel, T; Colwell, RR
- Issue Date
- International Journal of Systematic and Evolutionary Microbiology, Vol.50, pp.901-907
- Two bacterial strains, KMM 227(T) and 231(T), were isolated from seawater samples collected from the north-western Pacific Ocean at a depth of 4000-5000 m and were characterized using polyphasic taxonomy, Both were Gram-negative, psychrotolerant, heterotrophic, aerobic and required NaCl for growth (0.6-15.0%). The temperature for growth was 4-30 degrees C. Both strains were rod-shaped, with a single flagellum, However, strain KMM 231(T) revealed a single long fimbrium, Cellular fatty acids detected in the isolates were predominantly odd-numbered and iso-branched, with 15 and 17 carbons (ca. 70%), Also present were saturated and monounsaturated straight-chain fatty acids. Results of phylogenetic analyses, employing three tree-making methods, strongly indicated that the two strains formed a distinct lineage within a clade containing the genera Alteromonas, Colwellia and Pseudoalteromonas. in the gamma-Proteobacteria, The two strains shared 16S rDNA sequence similarity of 96.9% and genomic DNA relatedness of 27%; the latter was determined by dot-blot hybridization, The strains were differentiated by the presence of fimbria, production of chitinase, ability to grow on 15% NaCl and BIOLOG profiles. Given the polyphasic evidence accumulated in this study, it is proposed that the two deep-sea isolates be classified in the genus Idiomarina gen, nov., as Idiomarina abyssalis sp, nov. (type strain is KMM 227(T)) and Idiomarina zobellii sp, nov. (type strain is KMM 231(T)).
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