Name: Alicyclobacillus acidocaldarius subsp. rittmannii Nicolaus et al. 2024

Category: Subspecies

Proposed as: subsp. nov.

Etymology: ritt.man’ni.i. N.L. gen. masc. n. rittmannii, of proper name Rittmann

Pronunciation (Latin), gender: a-li-ky-klo-ba-KIL-lus a-ki-do-kal-DA-ri-us ritt-MAN-ni-i, masculine

Type strain: CCUG 59834; DSM 11297; MR1

See detailed strain information at

16S rRNA gene: AB059674 Analyse FASTA

Effective publication: Nicolaus B, Improta R, Manca MC, Lama L, Esposito E, et al. Alicyclobacilli from an unexplored geothermal soil in Antarctica: Mount Rittmann. Polar Biol 1998; 19:133-141. 🇮🇹

IJSEM list: Oren A, Göker M. Validation list no. 219. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2024; 74:6452.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 😷 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 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.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded pathogenicity of other species in the genus.
  • 🧍 According to Rules 27(3) and 30, Alicyclobacillus acidocaldarius subsp. rittmannii Nicolaus et al. 2002 is not validly published because, at the time of publication, the type strain was not deposited in two publicly accessible service collections in different countries. According to the Judicial Opinion 81, authors or this name, or other scientists who wish to have this name validly published, should submit evidence of the deposit of the type strain in additional collections to the List Editor (either directly or via the IJSEM Editorial Office) before the next meeting of the Judicial Commission in Sapporo, Japan, in 2011. After that time, the name will be ruled not to have been validly published. If, after that deadline, the authors or other scientists wish to have this name validly published, this may be done by confirming that the name is in accordance with the requirements of the Code and either by requesting valid publication via the Validation Lists or by inclusion of the proposal in an original article in the IJSEM. The details of valid publication will then make reference to those publications. If authors or other scientists feel that an exception should be granted to Rule 30, requiring deposit of the type in two different collections in two different countries, they should contact the Editorial Office of the IJSEM. Publication: Judicial Commission. Judicial Opinion No. 81. Int J Syst Evol Microbiol 2008; 58:1755-1763.

Parent taxon: Alicyclobacillus acidocaldarius (Darland and Brock 1971) Wisotzkey et al. 1992

Assigned by: Nicolaus B, Improta R, Manca MC, Lama L, Esposito E, et al. Alicyclobacilli from an unexplored geothermal soil in Antarctica: Mount Rittmann. Polar Biol 1998; 19:133-141. 🇮🇹

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Record number: 773045