Name: Porphyromonas endodontalis (van Steenbergen et al. 1984) Shah and Collins 1988

Category: Species

Proposed as: comb. nov.

Basonym: Bacteroides endodontalis van Steenbergen et al. 1984

Etymology: en.do.don’tal.is. Gr. adv. endon, within; Gr. masc. n. odous, tooth; L. masc./fem. adj. suff. -alis, suffix denoting pertaining to; N.L. masc./fem. adj. endodontalis, pertaining to the inside of a tooth, within teeth

Gender: feminine

Type strain: ATCC 35406; DSM 24491; HG370; JCM 8526; NCTC 13058

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB547659 Analyse FASTA

Valid publication: Shah HN, Collins MD. Proposal for reclassification of Bacteroides asaccharolyticus, Bacteroides gingivalis, and Bacteroides endodontalis in a new genus, Porphyromonas. Int. J. Syst. Bacteriol. 1988; 38:128-131.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Synonyms:

  • Name	Kind
    Bacteroides endodontalis van Steenbergen et al. 1984	homotypic synonym, validly published under the ICNP

• Emendations:
  • Hahnke et al. 2016 Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003. Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.

• Notes:
  • The phylogenetic position of this species was determined in a genome-scale analysis by García-López et al. (2019). Publication: Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083.

Parent taxon: Porphyromonas Shah and Collins 1988

Assigned by: Shah HN, Collins MD. Proposal for reclassification of Bacteroides asaccharolyticus, Bacteroides gingivalis, and Bacteroides endodontalis in a new genus, Porphyromonas. Int. J. Syst. Bacteriol. 1988; 38:128-131.

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Record number: 784667