RECLASSIFICATION OF UBIQUINONE Q-10 CONTAINING CARBOXIDOTROPHIC BACTERIA - TRANSFER OF [PSEUDOMONAS] CARBOXYDOVORANS OM5(T) TO OLIGOTROPHA, GEN-NOV, AS OLIGOTROPHA CARBOXIDOVORANS, COMB-NOV, TRANSFER OF [ALCALIGENES] CARBOXYDUS DSM 1086(T) TO CARBOPHILUS, GEN-NOV, AS CARBOPHILUS CARBOXIDUS, COMB-NOV, TRANSFER OF [PSEUDOMONAS] COMPRANSORIS DSM 1231(T) TO ZAVARZINIA, GEN-NOV, AS ZAVARZINIA COMPRANSORIS, COMB-NOV, AND AMENDED DESCRIPTIONS OF THE NEW GENERA

Carboxidotrophic bacteria are defined on physiological grounds and characterized by the ability to grow with carbon monoxide (CO) as a sole source of carbon and energy under aerobic or, in some instances, denitrifying conditions. ''[Pseudomonas] carboxydovorans'', ''[Pseudomonas] compransoris'' and ''[Alcaligenes] carboxydus'' are mesophilic Gram-negative carboxidotrophic species that require reclassification on the basis of chemotaxonomic and phylogenetic data. In order to reflect their localization within the alpha subclass of the Proteobacteria eve propose the new genera Oligotropha, Carbophilus and Zavarzinia. ''[Pseudomonas] carboxydovorans'' should be transferred to the genus Oligotropha as Oligotropha carboxidovorans, comb. nov., ''[Alcaligens] carboxydus'' should be transferred to the genus Carbophilus as Carbophilus carboxidus, comb. nov., and ''[Pseudomonas] compransoris'' to the genus Zavarzinia as Zavarzinia compransoris, comb. nov.