1887

Abstract

An aluminium-tolerant bacterium, strain AL46, was isolated from a waterweed, , grown in a highly acidic swamp (pH 3) at an actual acid sulfate soil area of Vietnam. Cells were Gram-negative, aerobic, non-spore-forming, non-motile rods (0.3 μm wide and 1.2–1.6 μm long). 16S rRNA gene sequence analysis indicated that strain AL46 belongs to the genus , class . Strain AL46 was related most closely to the type strains of and (99.4 and 97.8 % 16S rRNA gene sequence similarity, respectively). Levels of DNA–DNA relatedness between strain AL46 and the above type strains were 40 %. The results of physiological and biochemical tests allowed the novel strain to be differentiated phenotypically from the two recognized species. Data for predominant cellular fatty acids (cyclopropyl C and C), major isoprenoid quinone (Q-10) and DNA G+C content (65.6 mol%) were in accordance with those reported for the genus . Therefore, strain AL46 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is AL46 (=NBRC 104303 =VTCC-D9-1).

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2010-04-01
2020-01-21
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