Showing papers on "Dechloromonas published in 2001"
TL;DR: Two Dechloromonas strains are reported, RCB and JJ, that can completely mineralize various mono-aromatic compounds including benzene to CO2 in the absence of O2 with nitrate as the electron acceptor, the first example, to the authors' knowledge, of an organism of any type that can oxidize benzene anaerobically.
Abstract: Benzene contamination is a significant problem It is used in a wide range of manufacturing processes and is a primary component of petroleum-based fuels Benzene is a hydrocarbon that is soluble, mobile, toxic and stable, especially in ground and surface waters It is poorly biodegraded in the absence of oxygen However, anaerobic benzene biodegradation has been documented under various conditions Although benzene biomineralization has been demonstrated with nitrate1, Fe(III)2,3,4,5, sulphate6,7 or CO28,9 as alternative electron acceptors, these studies were based on sediments or microbial enrichments Until now there were no organisms in pure culture that degraded benzene anaerobically Here we report two Dechloromonas strains, RCB and JJ, that can completely mineralize various mono-aromatic compounds including benzene to CO2 in the absence of O2 with nitrate as the electron acceptor This is the first example, to our knowledge, of an organism of any type that can oxidize benzene anaerobically, and we demonstrate the potential applicability of these organisms to the treatment of contaminated environments
521 citations
TL;DR: An in-depth analysis of these organisms which form two distinct monophyletic groups within the Rhodocyclus assemblage is presented and two new genera are proposed, Dechloromonas and Dechlorosoma, which represent the predominant (per)chlorate-reducing bacteria in the environment.
Abstract: Previous studies on the ubiquity and diversity of microbial (per)chlorate reduction resulted in the isolation of 20 new strains of dissimilatory (per)chlorate-reducing bacteria. Phylogenetic analysis revealed that all of the isolates were members of the Proteobacteria with representatives in the alpha-, beta- and gamma-subclasses. The majority of the new isolates were located in the beta-subclass and were closely related to each other and to the phototrophic Rhodocyclus species. Here an in-depth analysis of these organisms which form two distinct monophyletic groups within the Rhodocyclus assemblage is presented. Two new genera, Dechloromonas and Dechlorosoma, are proposed for these beta-subclass lineages which represent the predominant (per)chlorate-reducing bacteria in the environment. The type species and strains for these new genera are Dechloromonas agitata strain CKBT and Dechlorosoma suillum strain PST, respectively.
279 citations