Name: Alcaligenes xylosoxidans subsp. denitrificans (Rüger and Tan 1983 ex Leifson and Hugh 1954) Kiredjian et al. 1986

Category: Subspecies

Proposed as: comb. nov.

Basonym: Alcaligenes denitrificans (ex Leifson and Hugh 1954) Rüger and Tan 1983

Etymology: de.ni.tri’fi.cans. N.L. part. adj. denitrificans, denitrifying

Gender: masculine

Type strain: ATCC 15173; CCUG 407; CIP 77.15; DSM 30026; IFO 15125; JCM 5490; LMG 1231; NCTC 8582

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ278451 Analyse FASTA

Valid publication: Kiredjian M, Holmes B, Kersters K, Guilvout I, De Ley J. Alcaligenes piechaudii, a new species from human clinical specimens and the environment. Int. J. Syst. Bacteriol. 1986; 36:282-287.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Achromobacter denitrificans (Rüger and Tan 1983 ex Leifson and Hugh 1954) Coenye et al. 2003

Risk group: 2

• Synonyms:

  • Name	Kind
    Achromobacter xylosoxidans subsp. denitrificans (Rüger and Tan 1983 ex Leifson and Hugh 1954) Yabuuchi et al. 1998	homotypic synonym, validly published under the ICNP
    Achromobacter denitrificans (Rüger and Tan 1983 ex Leifson and Hugh 1954) Coenye et al. 2003	homotypic synonym, validly published under the ICNP, distinct rank
    Alcaligenes denitrificans (ex Leifson and Hugh 1954) Rüger and Tan 1983	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • Alcaligenes xylosoxidans subsp. denitrificans is the correct name if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Alcaligenes xylosoxidans within a separate genus Alcaligenes.
  • The name Alcaligenes denitrificans subsp. denitrificans (ex Leifson and Hugh 1954) Rüger and Tan 1983 is illegitimate because the epithet xylosoxidans has priority. Kiredjian et al. 1986 correct this error with the formal proposal of the proper combination: Alcaligenes xylosoxidans subsp. denitrificans to replace the illegitimate name. Publication: Kersters K, De Ley J. Genus Alcaligenes. In: Krieg NR, Holt JG (eds), Bergey's Manual of Systematic Bacteriology, first edition, vol. 1, The Williams & Wilkins Co, Baltimore, 1984, p. 361-373.
  • Alcaligenes xylosoxidans subsp. denitrificans (Rüger and Tan 1983) Kiredjian et al. 1986, and Alcaligenes xylosoxidans subsp. xylosoxidans (Yabuuchi and Yano 1981) Kiredjian et al. 1986 are distinct species. Formal nomenclatural modifications are not required as both Alcaligenes denitrificans (ex Leifson and Hugh 1954) Rüger and Tan 1983, and Alcaligenes xylosoxidans (Yabuuchi and Yano 1981) Kiredjian et al. 1986 were validly published. Publication: Vandamme P, Heyndrickx M, Vancanneyt M, Hoste B, De Vos P, Falsen E, Kersters K, Hinz KH. Bordetella trematum sp. nov., isolated from wounds and ear infections in humans, and reassessment of Alcaligenes denitrificans Ruger and Tan 1983. Int J Syst Bacteriol 1996; 46:849-858.

Parent taxon: Alcaligenes xylosoxidans (Yabuuchi and Yano 1981 ex Yabuuchi and Ohyama 1971) Kiredjian et al. 1986

Assigned by: Kiredjian M, Holmes B, Kersters K, Guilvout I, De Ley J. Alcaligenes piechaudii, a new species from human clinical specimens and the environment. Int. J. Syst. Bacteriol. 1986; 36:282-287.

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Record number: 773026