Name: Paenirhizobium cremeum (Yang et al. 2022) Van Lill et al. 2026

Category: Species

Proposed as: comb. nov.

Basonym: Rhizobium cremeum Yang et al. 2022

Etymology: cre’me.um. N.L. neut. adj. cremeum, cream-white, referring to the colour of the colonies

Pronunciation (Latin), gender: pa͡e-ni-r^hi-ZO-bi-um KRE-me-um, neuter

Type strain: CGMCC 1.18731; KACC 22344; W15

Conduct genome-based taxonomy at

16S rRNA gene: MW633225 Analyse FASTA

Valid publication: van Lill M, Venter SN, Palmer M, Beukes CW, Steenkamp ET. A comprehensive genome-centred taxonomy for agrobacteria and rhizobia in the Bartonellaceae and Rhizobiaceae families. Int J Syst Evol Microbiol 2026; 76:7125. 🇿🇦

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 76, part 5 of the IJSEM. Int J Syst Evol Microbiol 2026; 76:7223.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Rhizobium cremeum Yang et al. 2022

• Synonyms:

  • Name	Kind
    Rhizobium cremeum Yang et al. 2022	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Paenirhizobium cremeum is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Paenirhizobium.
  • 🎓 Name mentioned 0 times in PubMed until 2026-05-21.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of other species in the genus.

Parent taxon: Paenirhizobium Ma et al. 2025

Assigned by: van Lill M, Venter SN, Palmer M, Beukes CW, Steenkamp ET. A comprehensive genome-centred taxonomy for agrobacteria and rhizobia in the Bartonellaceae and Rhizobiaceae families. Int J Syst Evol Microbiol 2026; 76:7125. 🇿🇦

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.71921Copy to clipboardLink copied to clipboard

Record number: 71921

• Previous versions:

  • Version	Date	JSON
    1	2026-06-11