Name: Alkalibacterium subtropicum Ishikawa et al. 2011

Category: Species

Proposed as: sp. nov.

Etymology: sub.tro’pi.cum. L. prep. sub, under, below, slightly; L. neut. adj. tropicum, tropical; N.L. neut. adj. subtropicum, subtropical, referring to the subtropical region where strains were isolated

Pronunciation (Latin), gender: al-ka-li-bak-TE-ri-um sub-TRO-pi-kum, neuter

Type strain: DSM 23664; NBRC 107172; O24-2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB555562 Analyse FASTA

Valid publication: Ishikawa M, Nakajima K, Ishizaki S, Kodama K, Okamoto-Kainuma A, Koizumi Y, Yamamoto Y, Yamasato K. Alkalibacterium subtropicum sp. nov., a slightly halophilic and alkaliphilic marine lactic acid bacterium isolated from decaying marine algae. Int J Syst Evol Microbiol 2011; 61:2996-3002. 🇯🇵

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 12 of the IJSEM. Int J Syst Evol Microbiol 2012; 62:476-477.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.06353 (N = 9).
  • 😷 The risk group for Germany has been imported on 2026-08-13. 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 1 time in PubMed until 2026-06-11.

Parent taxon: Alkalibacterium Ntougias and Russell 2001

Assigned by: Ishikawa M, Nakajima K, Ishizaki S, Kodama K, Okamoto-Kainuma A, Koizumi Y, Yamamoto Y, Yamasato K. Alkalibacterium subtropicum sp. nov., a slightly halophilic and alkaliphilic marine lactic acid bacterium isolated from decaying marine algae. Int J Syst Evol Microbiol 2011; 61:2996-3002. 🇯🇵

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Record number: 789580