1887

Abstract

A novel thiosulfate-oxidizing bacterium, designated strain LCS2, was isolated from a biofilm on sulfur particles used in an autotrophic denitrification process. The strain was found to comprise Gram-negative, non-motile, non-spore-forming rods that produced yellow-pigmented colonies on R2A agar. The strain contained Q-8 as the major ubiquinone and 17 : 1 iso 9, 15 : 0 iso and 17 : 0 iso as the major fatty acids. The G+C content of the genomic DNA was 64.6 mol%. The 16S rRNA gene sequence of strain LCS2 was found to be most similar to that of IAM 15025 (97.4 % similarity). The results of DNA–DNA hybridization and phenotypic analysis showed that strain LCS2 can be distinguished from all known species and therefore represents a novel species of the genus, for which the name sp. nov. is proposed. The type strain is LCS2 (=DSM 18863 =KCTC 12771).

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2007-08-01
2020-01-25
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