Name: Anaerocolumna xylanovorans (Mechichi et al. 2000) Ueki et al. 2016

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium xylanovorans Mechichi et al. 2000

Etymology: xy.la.no’vo.rans. N.L. neut. adj. xylanosum, xylan; L. inf. v. vorare, devour, to eat; N.L. fem. part. adj. xylanovorans, xylan-eating bacterium

Pronunciation (Latin), gender: … ksy-la-NO-wo-rans, feminine

Type strain: DSM 12503; HESP1; JCM 31057

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF116920 Analyse FASTA

Valid publication: Ueki A, Ohtaki Y, Kaku N, Ueki K. Descriptions of Anaerotaenia torta gen. nov., sp. nov. and Anaerocolumna cellulosilytica gen. nov., sp. nov. isolated from a methanogenic reactor of cattle waste and reclassification of Clostridium aminovalericum, Clostridium jejuense and Clostridium xylanovorans as Anaerocolumna species. Int J Syst Evol Microbiol 2016; 66:2936-2943. 🇯🇵

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 66, part 8 of the IJSEM. Int J Syst Evol Microbiol 2016; 66:4306-4309.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Clostridium xylanovorans Mechichi et al. 2000	homotypic synonym, validly published under the ICNP

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.02600 (N = 73).
  • 😷 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 0 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 xylanovorans Mechichi et al. 2000. Publication: Mechichi T, Labat M, Garcia JL, Thomas P, Patel BK. Characterization of a new xylanolytic bacterium, Clostridium xylanovorans sp. nov. Syst Appl Microbiol 1999; 22:366-371. 🇦🇺 Anonymous. Validation list no. 72. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2000; 50:3-4.

Parent taxon: Anaerocolumna Ueki et al. 2016

Assigned by: Ueki A, Ohtaki Y, Kaku N, Ueki K. Descriptions of Anaerotaenia torta gen. nov., sp. nov. and Anaerocolumna cellulosilytica gen. nov., sp. nov. isolated from a methanogenic reactor of cattle waste and reclassification of Clostridium aminovalericum, Clostridium jejuense and Clostridium xylanovorans as Anaerocolumna species. Int J Syst Evol Microbiol 2016; 66:2936-2943. 🇯🇵

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Record number: 794359