Name: Variovorax rhizosphaerae Nguyen et al. 2018

Category: Species

Proposed as: sp. nov.

Etymology: rhi.zo.sphae’rae. Gr. fem. n. rhiza, root; Gr. fem. n. sphaîra (gen. sphaîras), ball, sphere; N.L. gen. fem. n. rhizosphaerae, of the rhizosphere of Robinia pseudoacacia

Pronunciation, gender: r^hi-zo-SP^HA͡E-ra͡e, masculine

Type strain: KACC 18900; NBRC 112307; UCM G-28

Conduct genome-based taxonomy at

16S rRNA gene: KU973603 Analyse FASTA

Effective publication: Nguyen TM, Trinh NH, Kim J. Proposal of three novel species of soil bacteria, Variovorax ureilyticus, Variovorax rhizosphaerae, and Variovorax robiniae, in the family Comamonadaceae. J Microbiol 2018; 56:485-492. 🇰🇷

IJSEM list: Oren A, Garrity GM. Validation list no. 184. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2018; 68:3379-3393.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

• Notes:
  • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Contrasting the term "chemotaxonomic" with "phenotypic" is not recommended. Using the term "phylogenetic data" (or equivalent) for sequence data is not advocated. Whether taxa can have "members" is debatable. See the LPSN phylogeny page for details. Publication: Göker M. What can genome analysis offer for bacteria? In: Bridge P, Smith D, Stackebrandt E (eds), Trends in the systematics of bacteria and fungi, CAB International, Wallingford, 2021, p. 255-281. 🇬🇧
  • 🎓 Name mentioned 1 time in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as 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: Variovorax Willems et al. 1991

Assigned by: Nguyen TM, Trinh NH, Kim J. Proposal of three novel species of soil bacteria, Variovorax ureilyticus, Variovorax rhizosphaerae, and Variovorax robiniae, in the family Comamonadaceae. J Microbiol 2018; 56:485-492. 🇰🇷

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Record number: 797985