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Undibacterium pigrum gen. nov., sp. nov., isolated from drinking water

Autor Kämpfer, Peter; Rosselló-Mora, Ramón ; Hermansson, Malte; Persson, Frank; Huber, Birgit E.; Falsen, Enevold; Busse, Hans-Jürgen
Fecha de publicación jul-2007
EditorSociety for General Microbiology
Citación International Journal of Systematic and Evolutionary Microbiology 57(7): 1510-1515 (2007)
ResumenTwo Gram-negative, rod-shaped, oxidase-positive, non-spore-forming, non-motile bacteria (strains CCUG 49009T and CCUG 49012), both isolated from drinking water, were characterized. On the basis of chemotaxonomic data [major ubiquinone, Q-8; predominant polyamines, putrescine and 2-hydroxyputrescine; major polar lipids, phosphatidylethanolamine, moderate amounts of diphosphatidylglycerol and phosphatidylglycerol and minor amounts of three aminolipids and phosphatidylserine; major fatty acids, C16:0 and summed feature 3 (C16:1ω7c/C15:0 iso 2-OH)] and 16S rRNA gene sequence similarities, both strains clearly belong to the family Oxalobacteraceae of the Betaproteobacteria. 16S rRNA gene sequence similarities with members of the most closely related genera of this group (Herminiimonas, Massilia, Duganella, Telluria, Herbaspirillum, Janthinobacterium, Naxibacter and Paucimonas) were less than 96.5 % for both strains. The two strains also shared a relatively low 16S rRNA gene sequence similarity (96.8 %) Although phylogenetic analysis based on 16S rRNA gene sequence similarities clearly showed that the two organisms formed a separate branch, their phenotypes (including chemotaxonomic features) were hardly distinguishable and showed high similarities to those reported for the most closely related genera. On the basis of DNA-DNA hybridization results, the two strains were shown to represent separate species (sharing only 20 % DNA-DNA relatedness), but they could not be clearly differentiated phenotypically from each other. It is evident that these organisms represent a new genus, Undibacterium gen. nov., with one species, Undibacterium pigrum sp. nov. The type strain of Undibacterium pigrum is strain CCUG 49009T (= CIP 109318T). Strain CCUG 49012 (= CIP 108976) probably represents a second species of this genus, but is described here as a second genomovar of this species because of the lack of differentiating characters. © 2007 IUMS.
Versión del editorhttp://dx.doi.org/10.1099/ijs.0.64785-0
URI http://hdl.handle.net/10261/103588
Identificadoresdoi: 10.1099/ijs.0.64785-0
issn: 1466-5026
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