Name: Phytoamicus Van Lill et al. 2026

Category: Genus

Proposed as: gen. nov.

Etymology: Phy.to.a.mi’cus. Gr. neut. n. phyton, plant; L. masc. adj. amicus, friend; N.L. masc. n. Phytoamicus, a friend of a plant, referring to the ability of the type species to associate with plants and release phytohormones that promote plant growth

Gender, pronunciation (Latin): masculine (stem: Phytoamic-), p^hy-to-a-MI-kus

Type species: Phytoamicus setariae (Kang and Seo 2023) Van Lill et al. 2026

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

Correct name: Rhizobium Frank 1889 (Approved Lists 1980)

• Synonyms:

  • Name	Kind
    Velazquezella Naranjo-Robayo et al. 2026	heterotypic synonym, validly published under the ICNP
    Rhizobium Frank 1889 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP, conserved name
    Limnomicrobium Naranjo-Robayo et al. 2026	heterotypic synonym, validly published under the ICNP
    Martinezella Naranjo-Robayo et al. 2026	heterotypic synonym, validly published under the ICNP
    Arminella Naranjo-Robayo et al. 2026	heterotypic synonym, validly published under the ICNP
    Paenirhizobium Ma et al. 2025	heterotypic synonym, validly published under the ICNP
    "Metarhizobium" Ma et al. 2023	heterotypic synonym, not validly published
    Peteryoungia Rahi et al. 2021	heterotypic synonym, validly published under the ICNP

• Notes:
  • 🚂 For the type species of this genus another name is in use, which is affiliated with the genus Rhizobium Frank 1889 (Approved Lists 1980). Publication: Kang M, Seo T. Rhizobium setariae sp. nov., an Indole-3-Acetic Acid-Producing Bacterium Isolated from Green Foxtail, Setaria viridis. Curr Microbiol 2022; 79:162. 🇰🇷
  • ❗ Phytoamicus is the correct name instead if this genus is regarded as a separate genus (i.e., if its nomenclatural type is not assigned to another genus whose name is validly published, legitimate and not rejected and has priority).
  • 🎰 The BRCs most frequently used for deposits in this group are: KACC: 1; NBRC: 1.

Subdivision:

Number of child taxa with a validly published and correct name: 0
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
    Phytoamicus setariae (Kang and Seo 2023) Van Lill et al. 2026	validly published under the ICNP	synonym

Parent taxon: Rhizobiaceae Conn 1938 (Approved Lists 1980)

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.71883Copy to clipboardLink copied to clipboard

Record number: 71883

• Previous versions:

  • Version	Date	JSON
    1	2026-06-11