Two luminous marine bacterial strains, LC2-005 and LC2-102, were isolated from seawater at Kuroshio Region and Sagami Bay in Japan, respectively. These bacteria were Gram-negative, oxidase-positive, catalase-positive, motile and rod-shaped. On the basis of 16S rRNA gene sequence analysis, strains LC2-005 and LC2-102 formed a cluster within the species group. However, multilocus sequence analysis using five loci (, , , and ) and DNA–DNA hybridization experiments indicated that these strains were distinct from the currently known species. Additionally, these strains differ from related species in utilization of glucose, mannitol, inositol, sorbitol, rhamnose, sucrose, melibiose and arabinose, production of lysine decarboxylase, ornithine decarboxylase, tryptophan deaminase, esterase (C4), lipase (C4), chymotrypsin, acid phosphatase, -glucosidase, -glucosidase and -acetyl--glucosaminidase and the ability to reduce nitrate to nitrite. The major fatty acids were C iso 2-OH and/or C 7, C, C 7 and C. The DNA G+C contents of strains LC2-005 and LC2-102 were 45.2 and 45.5 mol%, respectively. On the basis of the polyphasic taxonomic evidence presented in this study, it can be concluded that strains LC2-005 and LC2-102 belong to the same genospecies and represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is LC2-005 (=NBRC 104587 =KCTC 22352).


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Micrograph using atomic force microscopy of strain LC2-005 (=NBRC 104587 ) grown on solid medium. Bar, 2 µm.

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