Uliginosibacterium sangjuense sp. nov., isolated from sediment of the Nakdong River.

A Gram-negative, aerobic, motile by flagella, and light yellow bacterium, designated SS1-76, was isolated from sediment of the Nakdong River in Sangju-si, Republic of Korea. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate SS1-76 belongs to the genus Uliginosibacterium of the family Rhodocyclaceae, exhibiting high sequence similarity with the type strains of Uliginosibacterium gangwonense 5YN10-9 (96.0%) and Uliginosibacterium paludis KBP-13 (94.9%). Strain SS1-76 contains ubiquinone-8 as a respiratory quinone and summed feature 3 (C ω7c and/or C ω6c), C, and C as major fatty acids. The cellular polar lipids are composed of phosphatidylethanolamine, phosphatidylglycerol, and unidentified aminophospholipids. The DNA G+C content was 65.3 mol%. Phenotypic, chemotaxonomic, and phylogenetic evidence clearly indicated that strain SS1-76 represents a novel species of the genus Uliginosibacterium, for which the name Uliginosibacterium sangjuense sp. nov. is proposed. The type strain is SS1-76 (= KCTC 52159 = JCM 31375).