Phylogenetic relationships of three amino-acid-utilizing anaerobes, Selenomonas acidaminovorans, ‘Selenomonas acidaminophila’ and Eubacterium acidaminophilum, as inferred from partial 16S rDNA nucleotide sequences and proposal of Thermanaerovibrio acidaminovorans gen. nov., comb. nov. and Anaeromusa acidaminophila gen. nov., comb. nov.

摘要

\ud\ud16S rRNA gene sequences of three previously described amino-acid-fermenting anaerobes, ’ and , were determined. All three were found to cluster within the and related genera of the subphylum of the Gram-positive bacteria. The thermophile, , formed an individual line of descent and was equidistantly placed between and (similarity of 85%), both of which also form single lines of descent. ‘’ was related to , a member of cluster IX, with a similarity of 90%, whereas was closely related to (similarity of 96%) as a member of cluster XI. Based on the phylogenetic data presented in this report and the phenotypic descriptions of these bacteria published previously, it is recommended that be transferred to a new genus, gen. nov., as comb. nov. and ‘’ be transferred to a new genus, gen. nov., as comb. nov. Though the transfer of to a new taxon is justified, this is not recommended until the taxonomic status of all the members of cluster XI has been reviewed.