The placement of ‘’ in the genus was proposed previously, based on 16S rRNA gene sequence analysis, upon further studies of taxonomical characteristics. In this study, physiological characteristics and DNA–DNA reassociation data are presented and the transfer of ‘’ to the genus is proposed. The original description of the strain (strain Bu-B1211) indicated that it was capable of denitrification but not anaerobic growth. ‘’ is capable of anaerobic respiration and growth, utilizing nitrate as a terminal electron acceptor during the oxidation of organic acids and alcohols, but not aromatic hydrocarbons or open-chain terpenoids. The total fatty acid composition supported the assignment of strain Bu-B1211 to the and resembled that of members of the genus . The combination of 16S rRNA gene phylogenetic evidence, physiological and taxonomical characteristics and DNA–DNA reassociation data supported the placement of ‘’ Bu-B1211 in the genus as representing a novel species, for which the name sp. nov. is proposed. The type strain is Bu-B1211 (=IAM 12574=ATCC 43655=DSM 2080).


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