Name: Leclercia adecarboxylata (Leclerc 1962) Tamura et al. 1987

Category: Species

Proposed as: comb. nov.

Basonym: Escherichia adecarboxylata Leclerc 1962 (Approved Lists 1980)

Etymology: a.de.car.bo.xy.la’ta. Gr. pref. a-, not (inseparable prefix); N.L. n. decarboxylum, removal of a molecule of carbon dioxide from an organic compound; from French n. decarboxyl; from N.L. neut. n. carboxyl; L. adj. suff. -atus -a -um, suffix meaning provided with; N.L. fem. adj. adecarboxylata, without decarboxylase activity, because it has negative reactions in lysine decarboxylase, ornithine decarboxylase and arginine dihydrolase, i.e., “triple decarboxylase negative”

Pronunciation (Latin), gender: … a-de-kar-bo-ksy-LA-ta, feminine

Type strain: ATCC 23216; CIP 82.92; HAMBI 1696; JCM 1667; LMG 2803; NBRC 102595; NCTC 13032

Conduct genome-based taxonomy at

16S rRNA gene: JN175338 Analyse FASTA

Effective publication: Tamura K, Sakazaki R, Kosako Y, Yoshizaki E. Leclercia adecarboxylata gen. nov., comb. nov., formerly known as Escherichia adecarboxylata. Curr. Microbiol. 1986; 13:179184.

IJSEM list: Anonymous. Validation list no. 23. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1987; 37:179-180.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    Escherichia adecarboxylata Leclerc 1962 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Emendations:
  • Maddock et al. 2022 Maddock D, Arnold D, Denman S, Brady C. Description of a novel species of Leclercia, Leclercia tamurae sp. nov. and proposal of a novel genus Silvania gen. nov. containing two novel species Silvania hatchlandensis sp. nov. and Silvania confinis sp. nov. isolated from the rhizosphere of oak. BMC Microbiol 2022; 22:289. 🇬🇧 Oren A, Göker M. List of changes in taxonomic opinion no. 38. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2023; 73:5923.

• Notes:
  • 🥇 Nomenclatural type of the genus Leclercia Tamura et al. 1987. Publication: Tamura K, Sakazaki R, Kosako Y, Yoshizaki E. Leclercia adecarboxylata gen. nov., comb. nov., formerly known as Escherichia adecarboxylata. Curr. Microbiol. 1986; 13:179184.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - 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 = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — 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 185 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 Leclercia adecarboxylata (Leclerc 1962) Tamura et al. 1987 appears identical to CDC Enteric Group 41. Publication: Palleroni NJ. Genus I. Pseudomonas Migula 1894, 237 AL (Nom. Cons., Opin. 5 of the Jud. Comm. 1952, 121). In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. (The Proteobacteria), part B (The Gammaproteobacteria), Springer, New York, 2005, p. 323-379. 🇺🇸

Parent taxon: Leclercia Tamura et al. 1987

Assigned by: Tamura K, Sakazaki R, Kosako Y, Yoshizaki E. Leclercia adecarboxylata gen. nov., comb. nov., formerly known as Escherichia adecarboxylata. Curr. Microbiol. 1986; 13:179184.

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Record number: 777447