Name: Alkalibacterium psychrotolerans Yumoto et al. 2004

Category: Species

Proposed as: sp. nov.

Etymology: psy.chro.to’le.rans. Gr. masc. adj. psychros, cold; L. pres. part. tolerans, tolerating; N.L. neut. part. adj. psychrotolerans, tolerating cold environment

Pronunciation, gender: psy-k^hro-TO-le-rans, neuter

Type strain: IDR2-2; JCM 12281; NCIMB 13981

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB294176 Analyse FASTA

Valid publication: Yumoto I, Hirota K, Nodasaka Y, Yokota Y, Hoshino T, Nakajima K. Alkalibacterium psychrotolerans sp. nov., a psychrotolerant obligate alkaliphile that reduces an indigo dye. Int J Syst Evol Microbiol 2004; 54:2379-2383. 🇯🇵

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 6 of the IJSEM. Int J Syst Evol Microbiol 2005; 55:551-554.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😢 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. Using the term "phylogenetic data" (or equivalent) for sequence data is not advocated. 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 phylogenomic assignment score of this taxon is 0.21158 (N = 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 3 times in PubMed until 2025-06-04.

Parent taxon: Alkalibacterium Ntougias and Russell 2001

Assigned by: Yumoto I, Hirota K, Nodasaka Y, Yokota Y, Hoshino T, Nakajima K. Alkalibacterium psychrotolerans sp. nov., a psychrotolerant obligate alkaliphile that reduces an indigo dye. Int J Syst Evol Microbiol 2004; 54:2379-2383. 🇯🇵

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Record number: 783348