flavobacterium dankookense sp nov isolated from a freshwater reservoir and emended descriptions of flavobacterium cheonanense f chungnamense f koreense and f aquatile a novel yellowpigmented bacterial strain designated arsa19t was isolated from a freshwater reservoir in cheonan korea cells were gramstainingnegative rodshaped strictly aerobic and positive for catalase and oxidase the phylogenetic tree based on 16s rrna gene sequences showed that strain arsa19t belonged to the genus flavobacterium and was related to flavobacterium macrobrachii an8t 965 sequence similarity f koreense kacc 14969t 962 f chungnamense kacc 14971t 961 f cheonanense kacc 14972t 964 and f aquatile atcc 11947t 956 the isolate contained mk6 as the predominant menaquinone and isoc150 218 isoc160 3oh 104 isoc151 g 93 summed feature 3 isoc150 2oh andor c1617c 82 isoc150 3oh 77 and isoc160 73 as the major fatty acids the polar lipids of strain arsa19t were phosphatidylethanolamine four unknown aminolipids and two unidentified polar lipids the dna gc content of strain arsa19t was 333 mol based on its phenotypic and genotypic characteristics and on the phylogenetic evidence presented strain arsa19t is considered to represent a novel species in the genus flavobacterium for which the name flavobacterium dankookense sp nov is proposed the type strain is arsa19t kctc 23179t jcm 17065t kacc 14968t emended descriptions of flavobacterium cheonanense flavobacterium chungnamense flavobacterium koreense and flavobacterium aquatile are also proposed