title: Porphyromonas bennonis sp. nov., isolated from human clinical specimens.
abstract: During our investigation of the bacteriology of human wound infections and abscesses, a novel anaerobic, non-spore-forming, Gram-negative bacillus was frequently isolated. On the basis of morphological and biochemical criteria, the strains were tentatively identified as belonging to the family Bacteroidaceae, but they did not appear to correspond to any recognized species of this family. Comparative 16S rRNA gene sequencing showed that the 14 novel strains were genotypically homogeneous and confirmed their placement in the genus Porphyromonas. Sequence divergence values >10 % with respect to reference Porphyromonas species demonstrated that the strains isolated represent a novel species. On the basis of biochemical criteria and phylogenetic considerations, it is proposed that these strains isolated from human sources should be assigned to a novel species of the genus Porphyromonas, named Porphyromonas bennonis sp. nov., with WAL 1926C(T) (=ATCC BAA-1629(T) =CCUG 55979(T)) as the type strain.
authors: Research Service, Anaerobe Laboratory, Building 304, Room E3-237, Veterans Affairs (VA) West Los Angeles Healthcare Center, 11301 Wilshire Boulevard, Los Angeles, CA 90073, USA. carlsonph@aol.com
authors: Paula H
authors: PH
authors: Summanen
authors: Paul A
authors: PA
authors: Lawson
authors: Sydney M
authors: SM
authors: Finegold
mesh_terms: D015373:Bacterial Typing Techniques; D016866:Bacteroidaceae Infections / Q000382:microbiology*; D004269:DNA, Bacterial / Q000032:analysis; D020459:Genes, rRNA; D005838:Genotype; D006801:Humans; D008969:Molecular Sequence Data; D010641:Phenotype; D010802:Phylogeny; D017861:Porphyromonas / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S