A Gram-negative, short ovoid- to coccus-shaped, aerobic, motile, non-spore-forming bacterium (designated strain KS-11) was isolated from sediment of the eutrophic Guanting reservoir in Beijing, China. Colonies grown on R2A agar plates were circular, convex and colourless to orange. The strain grew in the presence of up to 1 % NaCl (optimum, 0 % NaCl). Growth occurred at 25–40 °C (optimum, 28–37 °C) and at pH 6.0–9.5 (optimum, pH 7.5–9.0). On the basis of 16S rRNA gene sequence similarity, strain KS-11 was shown to belong to the class , being closely related to (96.9 % 16S rRNA gene sequence similarity), followed by (96.8 %), (96.8 %), (96.2 %) and (95.8 %). The major fatty acids of strain KS-11 were summed feature 7 (C 7/9/12) (83.8 %) and C (6.5 %) and the G+C content of the genomic DNA was 69.0 mol%. Based on comparative analysis of physiological and chemotaxonomic data, it is proposed that strain KS-11 represents a novel species of the genus , named sp. nov. The type strain is KS-11 (=CGMCC 1.7655=NBRC 104937).


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vol. , part 11, pp. 2670 - 2674

Minimum-evolution and maximum-parsimony phylogenetic trees based on 16S rRNA gene sequences. [PDF](28 KB)

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