Miyazaki, M.; Nogi, Y.; Fujiwara, Y.; Kawato, M.; Kubokawa, K.; Korikoshi, K. (2008). Neptunomonas japonica sp nov., an Osedax japonicus symbiont-like bacterium isolated from sediment adjacent to sperm whale carcasses off Kagoshima, Japan. International Journal Of Systematic And Evolutionary Microbiology. 58: 866-871.

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Miyazaki, M.; Nogi, Y.; Fujiwara, Y.; Kawato, M.; Kubokawa, K.; Korikoshi, K.

2008

58: 866-871

Publication

Available for editors   [request]

Novel bacterial species were isolated from sediments adjacent to sperm whale carcasses off Kagoshima, Japan, at a depth of 226-246 m. The isolated strains, JAMM 0745(T), JAMM 1380, JAMM 1475 and JAMM 1610, were Gram-negative, rod-shaped, non-spore-forming and motile by means of a single polar or subterminal flagellum. Phylogenetic analysis based on 16S rRNA gene sequences of the novel isolates indicated a relationship to a symbiotic bacterial clone of the polychaete Osedax japonicus (99.6-99.9 % sequence similarity) and these bacteria were closely related to members of the genus Neptunomonas (95.6-96.0% similarity) within the class Gammaproteobacteria. The novel strains were able to produce isoprenoid quinone 0-8 as the major quinone component. The predominant fatty acids were C-16:0, C-16:1 and C-18:1, with C-18:2 and C-20:2 present in smaller amounts. The DNA G + C contents of the four novel strains were about 43.6-43.8 mol%. Based on the taxonomic differences observed, the four isolated strains appear to represent a novel species of the genus Neptunomonas. The name Neptunomonas japonica sp. nov. (type strain JAMM 0745(T)=JCM 14595(T) =DSM 18939(T)) is proposed for the novel strains.

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