1887

Abstract

A Gram-negative-staining, short-rod-shaped, floc-forming bacterium, designated strain RB3-7, was isolated from a laboratory-scale activated sludge system treating coke plant effluent. Comparative analysis of the 16S rRNA gene sequence demonstrated that the novel isolate was distantly related (≤95.8 % similarity) to K11 within the family . Strain RB3-7 was catalase- and oxidase-positive and non-motile. The predominant fatty acids were C, cyclo C, Cω7 and Cω7, and the major respiratory quinone was Q-8. The G+C content of the genomic DNA of strain RB3-7 was 68.5 mol%. On the basis of phenotypic, chemotaxonomic and molecular data, strain RB3-7 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is RB3-7 ( = DSM 21699 = NCAIM B 02336).

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2011-09-01
2019-09-21
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vol. , part 9, pp. 2146 - 2150

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Micromorphological features of strain RB3-7 . (a) Individual cells with metachromatic granules (R2A agar, Crystal Violet); (b) floc in liquid medium (R2A, native); (c) cell consortia remaining together after staining (R2A agar, Crystal Violet). Bars, 10 µm.

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