Species Acidithiobacillus ferrianus

Name: Acidithiobacillus ferrianus Norris et al. 2020

Category, proposed as: species, sp. nov.

Etymology: ferr.ia’nus. L. neut. n. ferrum, iron; L. masc. n. Ianus, Roman god of gates and duality, often depicted with two opposite-facing heads; N.L. masc. n. ferrianus, referring to its ability both to oxidize and reduce iron

Pronunciation (Latin), gender: a-ki-di-t^hi-o-ba-KIL-lus ferr-IA-nus, masculine

Type strain: DSM 107098; JCM 33084; MG

Conduct genome-based taxonomy at

16S rRNA gene: MN733279 Analyse FASTA

Effective publication: Norris PR, Falagan C, Moya-Beltran A, Castro M, Quatrini R, Johnson DB. Acidithiobacillus ferrianus sp. nov.: an ancestral extremely acidophilic and facultatively anaerobic chemolithoautotroph. Extremophiles 2020; 24:329-337. 🇬🇧

IJSEM list: Oren A, Garrity GM. Validation list no. 194. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:4043-4049.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 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 0 times in PubMed until 2026-06-11.

Parent taxon: Acidithiobacillus Kelly and Wood 2000

Assigned by: Norris PR, Falagan C, Moya-Beltran A, Castro M, Quatrini R, Johnson DB. Acidithiobacillus ferrianus sp. nov.: an ancestral extremely acidophilic and facultatively anaerobic chemolithoautotroph. Extremophiles 2020; 24:329-337. 🇬🇧

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Record number: 3527