Name: Methylobacteriaceae Garrity et al. 2006

Category: Family

Proposed as: fam. nov.

Etymology: Me.thy.lo.bac.te.ri.a’ce.ae. N.L. neut. n. Methylobacterium, type genus of the family; L. fem. pl. n. suff. -aceae, ending to denote a family; N.L. fem. pl. n. Methylobacteriaceae, the Methylobacterium family

Pronunciation (Latin), gender: me-t^hy-lo-bak-te-ri-A-ke-a͡e, feminine

Type genus: Methylobacterium Patt et al. 1976 (Approved Lists 1980)

Effective publication: Garrity GM, Bell JA, Lilburn T. Family IX. Methylobacteriaceae fam. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 567. 🇺🇸

IJSEM list: Euzeby JP. Validation list no. 107. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2006; 56:1-6.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• 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:
    • ⊕ Emendation accompanied by the inclusion of 4 genera in the family.
    • ⊖ Emendation accompanied by the removal of 3 genera from the family.
  • Wang et al. 2024 Wang HC, Huang MH, Guo DY, He W, Wang L, Fu ZY, Li WJ, Zhang AH, Zhang DF. Hohaiivirga grylli gen. nov., sp. nov., a New Member of the Family Methylobacteriaceae, Isolated from Cricket (Gryllus chinensis). Curr Microbiol 2024; 81:392. 🇨🇳 Oren A, Göker M. List of changes in taxonomic opinion no. 42. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2025; 75:6793.
    Notes:
    • ⊕ Emendation accompanied by the inclusion of 4 genera in the family.

• Notes:
  • 🧕 Brenner et al. (2005) assigned this family to the order Rhizobiales Kuykendall 2006. Publication: Kuykendall LD. Order VI. Rhizobiales ord. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 324. 🇺🇸
  • 🧒 Oren (2017) assigned the genus Neomegalonema Oren 2017 to this family. Publication: Oren A. On names of genera of prokaryotes that are later homonyms of generic names with standing in the zoological or the botanical nomenclature. Proposal of Neomegalonema gen. nov. and Neomegalonema perideroedes comb. nov. as replacements for the prokaryotic generic name Meganema and the species name Meganema perideroedes. Int J Syst Evol Microbiol 2017; 67:4276-4278. 🇮🇱
  • 🧒 Oren (2017) assigned the genus Meganema Thomsen et al. 2006 to this family. Publication: Oren A. On names of genera of prokaryotes that are later homonyms of generic names with standing in the zoological or the botanical nomenclature. Proposal of Neomegalonema gen. nov. and Neomegalonema perideroedes comb. nov. as replacements for the prokaryotic generic name Meganema and the species name Meganema perideroedes. Int J Syst Evol Microbiol 2017; 67:4276-4278. 🇮🇱
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Methlyobacteriaceae".
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International Committee on Systematics of Prokaryotes, Subcommittee on the taxonomy of Rhizobia and Agrobacteria, minutes of the annual meeting by videoconference, 5 July 2021, followed by online discussion until 31 December 2021. Int J Syst Evol Microbiol 2022; 72:5453. 🇫🇮
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Green and Ardley (2018). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 61; NBRC: 44; KCTC: 39; JCM: 36; ATCC: 27; NCIMB: 23; LMG: 22; VKM: 21; KACC: 21; IFO: 15.

Subdivision:

Number of child taxa with a validly published and correct name: 6
Number of child taxa with a validly published name, including synonyms: 8
Total number of child taxa: 9

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Balneimonas corrig. Takeda et al. 2004	validly published under the ICNP	synonym
    Balneomonas Takeda et al. 2004	inaccurate spelling	misspelling
    Enterovirga Chen et al. 2017	validly published under the ICNP	correct name
    Hohaiivirga Wang et al. 2025	validly published under the ICNP	correct name
    Methylobacterium Patt et al. 1976 (Approved Lists 1980)	validly published under the ICNP	correct name
    Methylorubrum Green and Ardley 2018	validly published under the ICNP	correct name
    Microvirga Kanso and Patel 2003	validly published under the ICNP	correct name
    Protomonas Urakami and Komagata 1984	validly published under the ICNP, illegitimate name	synonym
    Psychroglaciecola Qu et al. 2014	validly published under the ICNP	correct name

Parent taxon: Hyphomicrobiales Douglas 1957 (Approved Lists 1980)

Assigned by: 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. 🇩🇪

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Record number: 852