Hydrobacter penzbergensis gen. nov., sp. nov., isolated from purified water

Abstract

A Gram-negative, oxidase- and catalase-positive bacterium, designated strain EM 4T, which varied in shape from rod-shaped to curved or helical with frequently observed bulb-shaped protuberances, was isolated from purified water. 16S rRNA gene sequence analysis indicated that the novel strain belongs to the family Chitinophagaceae within the phylum Bacteroidetes ; the closest relative among bacterial species with validly published names was determined to be Sediminibacterium salmoneum NBRC 103935T, with 93.4 % sequence identity. The main fatty acids of strain EM 4T were iso-C15 : 0, iso-C15 : 1 and iso-C17 : 0 3-OH. The polar lipid profile consisted of phosphatidylethanolamine, aminolipids, aminophospholipids and unknown lipids; the quinone system consisted of menaquinone MK-7. 16S rRNA gene sequence analysis and the polar lipid and fatty acid profiles suggest that the strain represents a novel genus and species, for which the name Hydrobacter penzbergensis gen. nov., sp. nov. is proposed. The type strain of Hydrobacter penzbergensis is strain EM 4T ( = DSM 25353T = CCUG 62278T).