Name: Methylosinus sporium (ex Whittenbury et al. 1970) Bowman et al. 1993

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: spo’ri.um. Gr. fem. n. spora, seed (in biology, a spore); N.L. neut. n. sporium, spore-former (sic) (nominative in apposition)

Pronunciation (Latin), gender: me-t^hy-LO-si-nus SPO-ri-um, masculine

Type strain: ACM 3306; ATCC 35069; DSM 17706; NCIB 11126; NCIMB 11126; UNIQEM 60

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: Y18946 Analyse FASTA

Valid publication: Bowman JP, Sly LI, Nichols PD, Hayward AC. Revised taxonomy of the methanotrophs: description of Methylobacter gen. nov., emendation of Methylococcus, validation of Methylosinus and Methylocystis species, and a proposal that the family Methylococcaceae includes only the group I methanotrophs. Int. J. Syst. Bacteriol. 1993; 43:735-753. 🇦🇺

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 43, part 4 of the IJSB. Int J Syst Bacteriol 1994; 44:184.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — 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.
  • 🎓 Name mentioned 27 times in PubMed until 2026-06-11.
  • 🧍 The names of the original authors and the year of publication are Whittenbury, Phillips and Wilkinson 1970 (J. Gen. Microbiol., 1970, 61, 205-218) not Romanovskaia, Malashenko and Bogachenko (Mikrobiologiia, 1978, 47, 120-130) as cited in the paper by Bowman et al. 1993. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592. 🇫🇷

Parent taxon: Methylosinus (ex Whittenbury et al. 1970) Bowman et al. 1993

Assigned by: Bowman JP, Sly LI, Nichols PD, Hayward AC. Revised taxonomy of the methanotrophs: description of Methylobacter gen. nov., emendation of Methylococcus, validation of Methylosinus and Methylocystis species, and a proposal that the family Methylococcaceae includes only the group I methanotrophs. Int. J. Syst. Bacteriol. 1993; 43:735-753. 🇦🇺

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Record number: 778013