Name: Methylomicrobium Bowman et al. 1995

Category: Genus

Proposed as: gen. nov.

Etymology: Me.thy.lo.mi.cro’bi.um. N.L. neut. n. methylum, the methyl group; from French masc. n. méthyle; from French masc. n. méthylène; from Gr. neut. n. methy, wine; from Gr. fem. n. hylê, wood; N.L. neut. n. methyl, pertaining to the methyl radical; N.L. neut. n. microbium, microbe; N.L. neut. n. Methylomicrobium, methyl microbe

Gender, pronunciation (Latin): neuter (stem: Methylomicrobi-), me-t^hy-lo-mi-KRO-bi-um

Type species: Methylomicrobium agile (Bowman et al. 1993 ex Whittenbury et al. 1970) Bowman et al. 1995

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Bowman JP, Sly LI, Stackebrandt E. The phylogenetic position of the family Methylococcaceae. Int J Syst Bacteriol 1995; 45:182-185. 🇦🇺

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 45, part 1 of the IJSB. Int J Syst Bacteriol 1995; 45:420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Kalyuzhnaya et al. 2008 Kalyuzhnaya MG, Khmelenina V, Eshinimaev B, Sorokin D, Fuse H, Lidstrom M, Trotsenko Y. Classification of halo(alkali)philic and halo(alkali)tolerant methanotrophs provisionally assigned to the genera Methylomicrobium and Methylobacter and emended description of the genus Methylomicrobium. Int J Syst Evol Microbiol 2008; 58:591-596. 🇺🇸 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 3 of the IJSEM. Int J Syst Evol Microbiol 2008; 58:1273-1274.
    Notes:
    • ⊕ Emendation accompanied by the proposal of 3 new species in the genus.
  • Orata et al. 2018 Orata FD, Meier-Kolthoff JP, Sauvageau D, Stein LY. Phylogenomic Analysis of the Gammaproteobacterial Methanotrophs (Order Methylococcales) Calls for the Reclassification of Members at the Genus and Species Levels. Front Microbiol 2018; 9:3162. 🇨🇦 Oren A, Garrity GM. List of changes in taxonomic opinion no. 30. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:1850-1851.
    Notes:
    • ⊖ Emendation accompanied by the removal of 2 species from the genus.
    • ⊕ Emendation accompanied by the proposal of 1 new species in the genus.

• Notes:
  • 🚋 The type species of this genus has alternatively been placed in the genus Methylobacter Bowman et al. 1993. 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. 🇦🇺
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Methybmicrobium"; "Methylomicro"; "Methylomicromium"; "Methylornicrobiurn"; "Mothylomlcrobium".
  • 🎰 The BRCs most frequently used for deposits in this group are: NCIMB: 5; VKM: 5; ATCC: 3; DSM: 3; MCC: 1; BG: 1; NBRC: 1; JCM: 1; NCCB: 1.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 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.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "MLMI" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.
  • 🧍 The type species is given in an erratum. — 🧍 Type species subsequently has been defined by way of Erratum IJSB 45:622. Publication: Bowman JP, Sly LI, Stackebrandt E. Correction: The Phylogenetic Position of the Family Methylococcaceae. Int. J. Syst. Evol. Microbiol. 1995; 45:622. 🇦🇺

Subdivision:

Number of child taxa with a validly published and correct name: 5
Number of child taxa with a validly published name, including synonyms: 7
Total number of child taxa: 9

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Methylomicrobium agile (Bowman et al. 1993 ex Whittenbury et al. 1970) Bowman et al. 1995	validly published under the ICNP	correct name
    Methylomicrobium album (Bowman et al. 1993 ex Whittenbury 1970) Bowman et al. 1995	validly published under the ICNP	correct name
    Methylomicrobium alcaliphilum Kalyuzhnaya et al. 2008	validly published under the ICNP	synonym
    "Methylomicrobium buryatense" Kaluzhnaya et al. 2001	not validly published	preferred name
    Methylomicrobium japanense Kalyuzhnaya et al. 2008	validly published under the ICNP	correct name
    Methylomicrobium kenyense Kalyuzhnaya et al. 2008	validly published under the ICNP	synonym
    Methylomicrobium lacus (Kalyuzhnaya et al. 2005) Orata et al. 2019	validly published under the ICNP	correct name
    "Candidatus Methylomicrobium oryzae" Rahalkar et al. 2025	not validly published	preferred name
    Methylomicrobium pelagicum (Sieburth et al. 1988) Bowman et al. 1995	validly published under the ICNP	correct name

Parent taxon: Methylococcaceae Whittenbury and Krieg 1984

Assigned by: Bowman JP, Sly LI, Stackebrandt E. The phylogenetic position of the family Methylococcaceae. Int J Syst Bacteriol 1995; 45:182-185. 🇦🇺

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Record number: 516066