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Species Nocardia coeliaca

Name: Nocardia coeliaca (Gray and Thornton 1928) Waksman and Henrici 1948 (Approved Lists 1980)

Category, proposed as: species, comb. nov.

Basonym: "Mycobacterium coeliacum" Gray and Thornton 1928

Etymology: coe.li’a.ca. L. fem. adj. coeliaca, relating to the bowels

Pronunciation (Latin), gender: no-KAR-di-a ko͡e-LI-a-ka, feminine

Type strain: ATCC 17041; DSM 44595

16S rRNA gene: FR733721 Analysetree FASTA download

Effective publication: Waksman SA, Henrici AT. Family II. Actinomycetaceae. In: Breed RS, Murray EGD, Hitchens AP (eds), Bergey's Manual of Determinative Bacteriology, 6th ed., The Williams & Wilkins Co, Baltimore, 1948, p. 892-928.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

  • Notes:
    • 😷 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 = 1. — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — 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 5 times in PubMed until 2026-06-11.
    • 🙆 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 Ludwig et al. (2021), this "species affiliates away from Nocardia and may be reclassified as Rhodococcus". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218. 🇪🇸
    • 🧍 Yarza et al. (2013) expected for accession FR733721, originating from the alleged type-strain deposit DSM 44595, an affiliation with Nocardia (Nocardiaceae) but observed an affiliation with Rhodococcus (Nocardiaceae) and 99.9% similarity against Rhodococcus erythropolis. Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73. 🇩🇪
    • 🧍 The 16S rRNA gene sequence of the type strain shows an unexpected affiliation with the genus Rhodococcus (99.9% similarity against Rhodococcus erythropolis). Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73. 🇩🇪

Parent taxon: Nocardia Trevisan 1889 (Approved Lists 1980)

Assigned by: Waksman SA, Henrici AT. Family II. Actinomycetaceae. In: Breed RS, Murray EGD, Hitchens AP (eds), Bergey's Manual of Determinative Bacteriology, 6th ed., The Williams & Wilkins Co, Baltimore, 1948, p. 892-928.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.778704Link copied to clipboard

Record number: 778704