Name: Methylocystaceae Bowman 2006

Category: Family

Proposed as: fam. nov.

Etymology: Me.thy.lo.cys.ta’ce.ae. N.L. fem. n. Methylocystis, type genus of the family; L. fem. pl. n. suff. -aceae, ending to denote a family; N.L. fem. pl. n. Methylocystaceae, the Methylocystis family

Gender: feminine

Type genus: Methylocystis (ex Whittenbury et al. 1970) Bowman et al. 1993

Effective publication: Bowman JP. Family V. Methylocystaceae 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. 411-413.

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

• Synonyms:

  • Name	Kind
    Methylopilaceae diCenzo et al. 2024	heterotypic synonym, validly published under the ICNP

• 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 1 genus in the family.
    • ⊖ Emendation accompanied by the removal of 3 genera from 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.
  • 🧒 Esquivel-Elizondo et al. (2018) assigned the genus Pleomorphomonas Xie and Yokota 2005 to this family. Publication: Esquivel-Elizondo S, Maldonado J, Krajmalnik-Brown R. Anaerobic carbon monoxide metabolism by Pleomorphomonas carboxyditropha sp. nov., a new mesophilic hydrogenogenic carboxydotroph. FEMS Microbiol Ecol 2018; 94:fiy056.
  • 🧒 Kim et al. (2017) assigned the genus Chthonobacter Kim et al. 2017 to this family. Publication: Kim D, Kang K, Ahn TY. Chthonobacter albigriseus gen. nov., sp. nov., isolated from grass-field soil. Int J Syst Evol Microbiol 2017; 67:883-888.
  • 🧒 Yoon and Kang (2018) assigned the genus Terasakiella Satomi et al. 2002 to this family. Publication: Yoon J, Kang DH. Terasakiella salincola sp. nov., a marine alphaproteobacterium isolated from seawater, and emended description of the genus Terasakiella. Int J Syst Evol Microbiol 2018; 68:2048-2053.
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Doronina et al. (2001), Belova et al. (2013). 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: VKM: 25; DSM: 19; ATCC: 8; UNIQEM: 6; KCTC: 5; NCIMB: 5; LMG: 4; CCUG: 4; CIP: 2; JCM: 2.
  • 🧍 In the effective publication, the type genus is erroneously cited as Methylocystis (ex Romanovskaya, Malashenko and Bogachenko 1978) Bowman et al. 1993. Publication: 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.

Subdivision:

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

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Albibacter Doronina et al. 2001	validly published under the ICNP	correct name
    Chenggangzhangella Yang et al. 2016	validly published under the ICNP	correct name
    Hansschlegelia Ivanova et al. 2010	validly published under the ICNP	correct name
    Methylocystis (ex Whittenbury et al. 1970) Bowman et al. 1993	validly published under the ICNP	correct name
    Methylopila Doronina et al. 1998	validly published under the ICNP	correct name
    Methylosinus (ex Whittenbury et al. 1970) Bowman et al. 1993	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: 859