Name: Thermopolyspora flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Goodfellow et al. 2005

Category: Species

Proposed as: comb. nov., nom. rev.

Basonym: Actinomadura flexuosa (ex Cross and Goodfellow 1973) Meyer 1989

Etymology: fle.xu.o’sa. L. fem. adj. flexuosa, full of turns or windings, tortuous, flexuous referring to the morphology of the spore chains

Pronunciation, gender: fle-ksu-O-sa, feminine

Type strain: ATCC 35864; BCRC 12531; CIP 107358; DSM 43186; DSM 44514; IFO 14349; IMET 9552; JCM 3056; KCC A-56; KCTC 9270; NBRC 14349; NRRL B-24348; Strain K1132

Conduct genome-based taxonomy at

16S rRNA gene: MT760392 Analyse FASTA

Valid publication: Goodfellow M, Maldonado LA, Quintana ET. Reclassification of Nonomuraea flexuosa (Meyer 1989) Zhang et al. 1998 as Thermopolyspora flexuosa gen. nov., comb. nov., nom. rev. Int J Syst Evol Microbiol 2005; 55:1979-1983.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 55, part 5 of the IJSEM. Int J Syst Evol Microbiol 2006; 56:7-9.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Nonomuraea flexuosa corrig. (Meyer 1989 ex Cross and Goodfellow 1973) Zhang et al. 1998	homotypic synonym, validly published under the ICNP
    Nonomuria flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Zhang et al. 1998	homotypic synonym, inaccurate spelling
    Microtetraspora flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Kroppenstedt et al. 1991	homotypic synonym, validly published under the ICNP
    Actinomadura flexuosa (ex Cross and Goodfellow 1973) Meyer 1989	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Thermopolyspora (ex Krassilnikov and Agre 1964) Goodfellow et al. 2005. Publication: Goodfellow M, Maldonado LA, Quintana ET. Reclassification of Nonomuraea flexuosa (Meyer 1989) Zhang et al. 1998 as Thermopolyspora flexuosa gen. nov., comb. nov., nom. rev. Int J Syst Evol Microbiol 2005; 55:1979-1983.
  • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. The expression "monophyletic clade" is a pleonasm. Whether taxa can have "members" is debatable. See the LPSN phylogeny page for details. Publication: Göker M. What can genome analysis offer for bacteria? In: Bridge P, Smith D, Stackebrandt E (eds), Trends in the systematics of bacteria and fungi, CAB International, Wallingford, 2021, p. 255-281.
  • 😷 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 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 6 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 genus.
  • 🧍 In the abstract of the paper by Goodfellow et al. 2005, the strain DSM 43186 is erroneously cited as DSM 41386. — In the paper by Goodfellow et al. 2005, Thermopolyspora flexuosa is cited as Thermopolyspora flexuosa comb. nov., nom. rev. Publication: . Erratum. Int. J. Syst. Evol. Microbiol. 2005; 55:2640.

Parent taxon: Thermopolyspora (ex Krassilnikov and Agre 1964) Goodfellow et al. 2005

Assigned by: Goodfellow M, Maldonado LA, Quintana ET. Reclassification of Nonomuraea flexuosa (Meyer 1989) Zhang et al. 1998 as Thermopolyspora flexuosa gen. nov., comb. nov., nom. rev. Int J Syst Evol Microbiol 2005; 55:1979-1983.

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Record number: 782623