Title Flavobacterium koreense sp. nov., Flavobacterium chungnamense sp. nov., and Flavobacterium cheonanense sp. nov., Isolated from a Freshwater Reservoir
Author Siwon Lee1, Hang-Yeon Weon2, Soo-Jin Kim2, and Tae-Young Ahn1*
Address 1Department of Microbiology, Dankook University, Cheonan 330-714, Republic of Korea, 2Applied Microbiology Division, National Institute of Agricultural Science and Technology, Rural Development Administration, Suwon 441-707, Republic of Korea
Bibliography Journal of Microbiology, 49(3),387-392, 2011,
Key Words freshwater, Bacteroidetes, Flavobacterium
Abstract Taxonomic studies were performed on three strains isolated from Cheonho reservoir in Cheonan, Korea. The isolates were Gram-negative, aerobic, rod-shaped, non-motile, catalase-positive, and oxidase-positive. Colonies on solid media were cream-yellow, smooth, shiny, and circular. Phylogenetic analysis of the 16S rRNA gene sequences revealed that these strains belong to the genus Flavobacterium. The strains shared 98.6-99.4% sequence similarity with each other and showed less than 97% similarity with members of the genus Flavobacterium with validly published names. The DNA-DNA hybridization results confirmed the separate genomic status of strains ARSA-42T, ARSA-103T, and ARSA-108T. The isolates contained menaquinone-6 as the predominant menaquinone and iso-C15:0, iso-C15:0 3-OH, iso-C15:1 G, and iso-C16:0 3-OH as the major fatty acids. The genomic DNA G+C content of the isolates were 31.4-33.2 mol%. According to the phenotypic and genotypic data, these organisms are classified as representative of three novel species in the genus Flavobacterium, and the name Flavobacterium koreense sp. nov. (strain ARSA-42T =KCTC 23182T =JCM 17066T =KACC 14969T), Flavobacterium chungnamense sp. nov. (strain ARSA-103T =KCTC 23183T =JCM 17068T =KACC 14971T), and Flavobacterium cheonanense sp. nov. (strain ARSA-108T =KCTC 23184T =JCM 17069T =KACC 14972T) are proposed.