A Gram-negative-staining, non-spore-forming bacterium devoid of flagella, designated strain B9, was isolated from rice paddy soil associated with the roots of collected from Jinju, South Korea. Cells were straight rods, were catalase- and oxidase-positive and were able to hydrolyse pectin, xylan and laminarin. Growth of strain B9 was observed between 15 and 35 °C (optimum 25–30 °C) and between pH 5.0 and 8.0 (optimum pH 6.5–7.5). Strain B9 contained menaquinone-7 (MK-7) as a major isoprenoid quinone and summed feature 3 (C 7 and/or iso-C 2-OH), iso-C and C as major fatty acids. The G+C content of the genomic DNA was 44.4 mol%. Comparative 16S rRNA gene sequence analysis showed that strain B9 belonged to the genus , a member of the family , and was most closely related to SCK (95.9 % sequence similarity). On the basis of chemotaxonomic data and molecular properties, strain B9 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is B9 (=KACC 12816 =DSM 19975).


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vol. , part 6, pp. 1451 - 1454

Transmission electron micrograph showing the general morphology of a negatively stained cell of strain B9 after growth for 3 days at 30 °C on R2A agar. Bar, 700 nm.

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