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

Category: Subspecies

Proposed as: subsp. nov. (rule 40d)

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 (Latin), gender: … ksy-los-o-KSI-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

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 subsp. xylosoxidans (Yabuuchi and Yano 1981 ex Yabuuchi and Ohyama 1971) Yabuuchi et al. 1998

Risk group: 2

• Synonyms:

  • Name	Kind
    Achromobacter xylosoxidans subsp. xylosoxidans (Yabuuchi and Yano 1981 ex Yabuuchi and Ohyama 1971) Yabuuchi et al. 1998	homotypic synonym, validly published under the ICNP

• Notes:
  • 📠 This subspecies was automatically created by the valid publication of Alcaligenes xylosoxidans subsp. denitrificans (Rüger and Tan 1983 ex Leifson and Hugh 1954) Kiredjian et al. 1986 according to rule 40d. 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. 🇬🇧
  • ❗ Alcaligenes xylosoxidans subsp. xylosoxidans is the correct name instead 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 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.
  • 🙅 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 subspecies. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 The name Alcaligenes denitrificans subsp. xylosoxydans (Yabuuchi and Yano 1981) Kersters and De Ley 1984 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. xylosoxidans 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. xylosoxidans (Yabuuchi and Yano 1981) Kiredjian et al. 1986, and Alcaligenes xylosoxidans subsp. denitrificans (Rüger and Tan 1983) 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. The name Alcaligenes xylosoxidans, however, 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. 🇧🇪

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: 773027