Name: Microtetraspora spiralis (Meyer 1981) Kroppenstedt et al. 1991

Category: Species

Proposed as: comb. nov.

Basonym: Actinomadura spiralis Meyer 1981

Etymology: spi.ra’lis. L. fem. adj. spiralis, coiled, referring to the morphology of the spore chains; from Gr. fem. n. speîra, coil; from L. adj. suff. -alis -is -e, suffix denoting pertaining to

Pronunciation, gender: spi-RA-lis, feminine

Type strain: ATCC 35114; BCRC 13309; CCM 3426; CCRC 13309; CIP 106923; DSM 43555; IFO 14097; IMET 9621; JCM 3286; KCTC 9286; NBRC 14097; NCIB 11633; NCIMB 11633; NRRL B-16098; VKM Ac-853

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: MT757998 Analyse FASTA

Effective publication: Kroppenstedt RM, Stackebrandt E, Goodfellow M. Taxonomic revision of the actinomycete genera Actinomadura and Microtetraspora. Syst. Appl. Microbiol. 1990; 13:148-160.

IJSEM list: Anonymous. Validation list no. 36. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1991; 41:178-179.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Nonomuraea spiralis corrig. (Meyer 1981) Zhang et al. 1998

Risk group: 1

• Synonyms:

  • Name	Kind
    Nonomuria spiralis (Meyer 1981) Zhang et al. 1998	homotypic synonym, inaccurate spelling
    Nonomuraea spiralis corrig. (Meyer 1981) Zhang et al. 1998	homotypic synonym, validly published under the ICNP
    Actinomadura spiralis Meyer 1981	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Microtetraspora spiralis 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 Microtetraspora.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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 = 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 4 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 genus.

Parent taxon: Microtetraspora Thiemann et al. 1968 (Approved Lists 1980)

Assigned by: Kroppenstedt RM, Stackebrandt E, Goodfellow M. Taxonomic revision of the actinomycete genera Actinomadura and Microtetraspora. Syst. Appl. Microbiol. 1990; 13:148-160.

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Record number: 778261