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

Category: Species

Proposed as: comb. nov.

Basonym: Achromobacter xylosoxidans (ex Yabuuchi and Ohyama 1971) Yabuuchi and Yano 1981

Etymology: xy.los.o.xi’dans. N.L. neut. n. xylosum, xylose, wood sugar; from Gr. neut. n. xylon, wood; N.L. v. oxido, to oxidize; from Gr. masc. adj. oxys, sour, acid; N.L. masc. part. adj. xylosoxidans, oxidizing xylose

Pronunciation, gender: xy-los-o-XI-dans, masculine

Type strain: ATCC 27061; CCUG 56438; CIP 71.32; DSM 10346; DSM 2402; Hugh 2838; IFO 15126; JCM 9659; KM543; LMG 1863; NBRC 15126; NCTC 10807; NRRL B-4082; Yabuuchi KM 543

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y14908 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 (and not recommended for medical use)

Correct name: Achromobacter xylosoxidans (ex Yabuuchi and Ohyama 1971) Yabuuchi and Yano 1981

Risk group: 2

• Synonyms:

  • Name	Kind
    Alcaligenes denitrificans subsp. xylosoxydans (Yabuuchi and Yano 1981 ex Yabuuchi and Ohyama 1971) Kersters and De Ley 1984	homotypic synonym, validly published under the ICNP, distinct rank
    "Alcaligenes xylosoxydans" (Yabuuchi and Yano 1981 ex Yabuuchi and Ohyama 1971) Dewhirst et al. 1989	homotypic synonym, not validly published
    "Achromobacter xylosoxidans" Yabuuchi and Ohyama 1971	homotypic synonym, not validly published
    Achromobacter xylosoxidans (ex Yabuuchi and Ohyama 1971) Yabuuchi and Yano 1981	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Alcaligenes xylosoxidans is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Alcaligenes.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "default: 2 Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2; xylosoxidans: 2 Animal classification RG: 2 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 258 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 Reassessed status: IJSB 46:853. 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.
  • 🧍 The results of phylogenetic analyses of 16S rRNA nucleotide sequences and a difference of more 10% in GC contents of DNA demonstrate that Achromobacter xylosoxidans (ex Yabuuchi and Ohyama 1971) Yabuuchi and Yano 1981, the type species of the genus Achromobacter, and Alcaligenes faecalis Castellani and Chalmers 1919 (Approved Lists 1980), the type species of the genus Alcaligenes, belong to the 2 distinct genera Achromobacter Yabuuchi and Yano 1981 emend. Yabuuchi et al. 1998 and Alcaligenes Castellani and Chalmers 1919 (Approved Lists 1980), respectively. Publication: Yabuuchi E, Kawamura Y, Kosako Y, Ezaki T. Emendation of genus Achromobacter and Achromobacter xylosoxidans (Yabuuchi and Yano) and proposal of Achromobacter ruhlandii (Packer and Vishniac) comb. nov., Achromobacter piechaudii (Kiredjian et al.) comb. nov., and Achromobacter xylosoxidans subsp. denitrificans (Ruger and Tan) comb. nov. Microbiol Immunol 1998; 42:429-438.
  • 🧍 The spelling is xylosoxidans in the nomenclatural names Alcaligenes xylosoxidans and Achromobacter xylosoxidans (ex Yabuuchi and Ohyama 1971) Yabuuchi and Yano 1981. However, the spelling is xylosoxydans in the nomenclatural name Alcaligenes denitrificans subsp. xylosoxydans (Yabuuchi and Yano 1981) Kersters and De Ley 1984. In Latin, "y" is a letter borrowed from the Greek in order to represent the Greek upsilon (υ). The root of the word is the Greek adjective οςυζ (Latin transliteration oxys) and the spelling xylosoxydans seems better than xylosoxidans. — The name Alcaligenes xylosoxidans (Yabuuchi and Yano 1981) Kiredjian et al. 1986 should be used only for strains previously classified as Achromobacter xylosoxidans (ex Yabuuchi and Ohyama 1971) Yabuuchi and Yano 1981 or Alcaligenes xylosoxidans subsp. xylosoxidans (Yabuuchi and Yano 1981) Kiredjian et al. 1986. 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.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Alcaligenes xylosoxidans subsp. denitrificans (Rüger and Tan 1983 ex Leifson and Hugh 1954) Kiredjian et al. 1986	validly published under the ICNP	synonym
    Alcaligenes xylosoxidans subsp. xylosoxidans (Yabuuchi and Yano 1981 ex Yabuuchi and Ohyama 1971) Kiredjian et al. 1986	validly published under the ICNP	synonym

Parent taxon: Alcaligenes Castellani and Chalmers 1919 (Approved Lists 1980)

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: 773025