Defluvibacter lusatiae gen. nov., sp. nov., a new chlorophenol-degrading member of the alpha-2 subgroup of proteobacteria
1999
Fritsche, K. | Auling, G. | Andreesen, J.R. | Lechner, U.
The two Gram-negative bacterial strains S1 and S4 were isolated from activated sludge of an industrial waste water treatment plant and exhibited a stable capability to degrade 2,4-dichlorophenol, 4-chloro-2-methylphenol, 4-chlorophenol and phenol. The cells were short rods with a polar flagellum, being mesophilic, strictly aerobic, oxidase-positive, and chemoorganotrophic. They utilized a range of amino acids, but only a restricted number of carbohydrates. Reassociation experiments with DNA from strains S1 and S4 revealed high interstrain similarity, indicating, that both strains belong to the same species. The phylogenetic position was determined by comparison of the almost complete 16S rDNA sequence of strain S1 with sequences of related bacteria. Strain S1 clustered with members of the alpha-2 subgroup of the Proteobacteria by forming a separate lineage within the radiation of Mesorhizobium, Phyllobacterium and Sinorhizobium. Both strains can be differentiated from members of related taxa by a set of physiological and chemotaxonomic properties including the ability to grow with norvaline, L-tryptophan, putrescine, glutarate and malonate, and by the presence of spermidine as major polyamine and of 12:0 3OH as fatty acid. Strain S1 is described as type strain of a new species and assigned to a new genus with the proposed name Defluvibacter lusatiae.
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