Genus Pseudundibacterium

Name: Pseudundibacterium Lu et al. 2026

Category, proposed as: genus, gen. nov.

Etymology: Pseud.un.di.bac.te’ri.um. Gr. neut. adj. pseudes, false; N.L. neut. n. Undibacterium, a bacterial generic name; N.L. neut. n. Pseudundibacterium, false Undibacterium

Gender, pronunciation (Latin): neuter (stem: Pseudundibacteri-), pse͡ud-un-di-bak-TE-ri-um

Type species: Pseudundibacterium arcticum (Li et al. 2016) Lu et al. 2026

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Lu HB, Kong LY, Chen L, Chen GJ, Wang JJ. Isolation of diverse Undibacterium-related strains from alpine lakes and re-examining the taxonomic status of this genus. Syst Appl Microbiol 2025; 48:126661. 🇨🇳

IJSEM list: Oren A, Göker M. Validation list no. 227. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2026; 76:6989.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Notes:
  • 🚋 The type species of this genus has alternatively been placed in the genus Undibacterium Kämpfer et al. 2007. Publication: Li X, Chang X, Zhang Y, Liu Z, Da X, Kim M, Fang C, Peng F. Undibacterium arcticum sp. nov., isolated from arctic alpine soil. Int J Syst Evol Microbiol 2016; 66:2797-2802. 🇨🇳
  • 🧬 The phylogenomic assignment score of this taxon is 0.09147 (N = 3).
  • 🎰 The BRCs most frequently used for deposits in this group are: KCTC: 1; CCTCC: 1.
  • 🧍 The distinct name Neoundibacterium from the same publication has a similar spelling. — 🧍 The distinct name Paraundibacterium from the same publication has a similar spelling. Publication: Angell RC, Freund GE, Willett P. Automatic spelling correction using a trigram similarity measure. Information Processing and Management 1983; 19:255-261.

Subdivision:

Number of child taxa with a validly published and correct name: 1
Number of child taxa with a validly published name, including synonyms: 1
Total number of child taxa: 1

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Pseudundibacterium arcticum (Li et al. 2016) Lu et al. 2026	validly published under the ICNP	correct name

Parent taxon: Oxalobacteraceae Garrity et al. 2006

Assigned by: Lu HB, Kong LY, Chen L, Chen GJ, Wang JJ. Isolation of diverse Undibacterium-related strains from alpine lakes and re-examining the taxonomic status of this genus. Syst Appl Microbiol 2025; 48:126661. 🇨🇳

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Record number: 70241