Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 64, Issue -, Pages 1488-1494Publisher
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.054312-0
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Two Gram-staining-negative, strictly aerobic, non-endospore-forming, non-motile, rod-shaped bacteria, designated strains YIT 12745(T) and YIT 12746(T), were isolated from sludge from a wastewater treatment plant. 16S rRNA gene sequence analyses indicated that these strains belonged to the genus Flavobacterium. In these analyses, strains YIT 12745(T) and YIT 12746(T) were most closely related to the type strains of Flavobacterium caeni and Flavobacterium terrigena, with 16S rRNA gene sequence similarity values of 94.9% and 96.2%, respectively. For both novel strains, menaquinone (MK-6) was the only respiratory quinone. The major fatty acids of strain YIT 12745(T) were iso-C-15:1 G (14.4%), iso-C-16:0 (13.2 WO), (C15:0) (12.9%), iso-C-15:0 (12.9%) and iSO-C-17:0 3-OH (11.5%). Those of strain YIT 1 27461 were iso-C-15:0 (21.5%), isoC(16) :0 (13.3 WO), C-15:0 (12.0%) and iso-C-15:1 G.(11.9 %). The genomic DNA G+C contents of strains YIT 12745(T) and YIT 12746(T) were 48.7 and 30.9 mol%, respectively. From their differential phenotypic and phylogenetic characteristics, these strains are considered to represent two novel species of the genus Flavobacterium, for which the names Flavobacterium longum sp. nov. (type strain YIT 12745(T)=JCM 19141(T)=DSM 27077(T)) and Flavobacterium urocaniciphilum sp. nov. (type strain YIT 12746(T)=JCM 191421=DSM 27078(T)) are proposed. Emended descriptions of Flavobacterium caeni and Flavobacterium terrigena are also proposed.
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