1887

Abstract

A Gram-negative, aerobic, orange-coloured bacterium, designated strain GSW-2, was isolated from seawater sampled at a beach and its taxonomic status was established by using a polyphasic approach. Vegetative cells produced a prostheca and reproduced by budding. Mature vegetative cells were spherical, oval- or rod-shaped (0.6–1.1×1.2–1.3 μm) and both vegetative cells and buds produced one or more flagella. Cells grew well at 30 °C and at pH 8.1–9.1, and produced a non-diffusible pigment. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain GSW-2 was most closely related to the type strain of (97.5 % similarity), a member of the family , class . Chemotaxonomic characteristics supported the assignment of strain GSW-2 to the genus , including the dominant cellular fatty acids (summed feature 7 and C), isoprenoid quinone (mainly Q-10) and DNA G+C content (44.5 mol%). Levels of DNA–DNA relatedness between strain GSW-2 and DSM 5838 were 8.8–13.6 %. On the basis of phenotypic features and DNA–DNA hybridization data, strain GSW-2 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is GSW-2 (=DSM 19733=JCM 14974).

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2009-09-01
2024-03-29
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