Name: Anaerotignum lactatifermentans (van der Wielen et al. 2002) Ueki et al. 2017

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium lactatifermentans van der Wielen et al. 2002

Etymology: lac.ta.ti.fer.men’tans. N.L. masc. n. lactas (gen. lactatis), lactate; L. pres. part. fermentans, fermenting; N.L. neut. part. adj. lactatifermentans, fermenting lactate

Pronunciation, gender: lak-ta-ti-fer-MEN-tans, neuter

Type strain: DSM 14214; G17; LMG 20954

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AY033434 Analyse FASTA

Valid publication: Ueki A, Goto K, Ohtaki Y, Kaku N, Ueki K. Description of Anaerotignum aminivorans gen. nov., sp. nov., a strictly anaerobic, amino-acid-decomposing bacterium isolated from a methanogenic reactor, and reclassification of Clostridium propionicum, Clostridium neopropionicum and Clostridium lactatifermentans as species of the genus Anaerotignum. Int J Syst Evol Microbiol 2017; 67:4146-4153.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 67, part 10 of the IJSEM. Int J Syst Evol Microbiol 2018; 68:3-6.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Clostridium lactatifermentans van der Wielen et al. 2002	homotypic synonym, validly published under the ICNP

• Notes:
  • 😷 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 7 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. This name is not taxonomically suspended any more in favour of Clostridium lactatifermentans van der Wielen et al. 2002. Publication: van der Wielen PW, Rovers GM, Scheepens JM, Biesterveld S. Clostridium lactatifermen tans sp. nov., a lactate-fermenting anaerobe isolated from the caeca of a chicken. Int J Syst Evol Microbiol 2002; 52:921-925. Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 52, part 3 of the IJSEM. Int J Syst Evol Microbiol 2002; 52:1077-1079.

Parent taxon: Anaerotignum Ueki et al. 2017

Assigned by: Ueki A, Goto K, Ohtaki Y, Kaku N, Ueki K. Description of Anaerotignum aminivorans gen. nov., sp. nov., a strictly anaerobic, amino-acid-decomposing bacterium isolated from a methanogenic reactor, and reclassification of Clostridium propionicum, Clostridium neopropionicum and Clostridium lactatifermentans as species of the genus Anaerotignum. Int J Syst Evol Microbiol 2017; 67:4146-4153.

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Record number: 796084