Hymenobacter coalescens sp. nov., isolated from wetland freshwater

Joo Won Kang, Keun Sik Baik, Wan-Taek Im, Chi Nam Seong
International Journal of Systematic and Evolutionary Microbiology 2016, 66 (9): 3546-3551
A non-motile and rod-shaped bacterium, designated strain WW84T, was isolated from freshwater collected from the Woopo wetland (Republic of Korea). Cells were Gram-stain-negative, aerobic, catalase-positive and oxidase-negative. The major fatty acids were C16 : 0, C18 : 0, iso-C15 : 0 and iso-C17 : 1I and/or anteiso-C17 : 1B. The strain contained MK-7 as the major isoprenoid quinone, phosphatidylethanolamine as the major polar lipid and sym-homospermidine as the major polyamine. The DNA G+C content was 59 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain WW84T forms an evolutionary lineage within the radiation including the members of the genus Hymenobacter with Hymenobactero cellatus Myx 2105T (96.96 % sequence similarity) as its nearest neighbor. A number of phenotypic characteristics distinguished strain WW84T from the related members of the genus Hymenobacter. On the basis of the evidence presented in this study, a novel species, Hymenobacter coalescens sp. nov. is proposed with strain WW84T (=KCTC 32530T=JCM 19493T) as the type strain.

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