Name: Martinezella Naranjo-Robayo et al. 2026

Category: Genus

Proposed as: gen. nov.

Etymology: Mar.ti.ne.zel’la. N.L. fem. dim. n. Martinezella, named to honour Professor Esperanza Martínez-Romero, who has made important contributions to the taxonomy of rhizobia

Gender, pronunciation (Latin): feminine (stem: Martinezell-), mar-ti-ne-ZEL-la

Type species: Martinezella tropici (Martínez-Romero et al. 1991) Naranjo-Robayo et al. 2026

Valid publication: Naranjo-Robayo N, Harrison TL, Esme O, Menendez E, Kuzmanovic N, Peix A, Young JPW, diCenzo GC. Updated taxonomy of the family Rhizobiaceae with proposals for 8 novel genera and 32 novel combinations. Int J Syst Evol Microbiol 2026; 76:7131. 🇨🇦

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 76, part 4 of the IJSEM. Int J Syst Evol Microbiol 2026; 76:7198.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Rhizobium Frank 1889 (Approved Lists 1980)

• Synonyms:

  • Name	Kind
    Phytoamicus Van Lill et al. 2026	heterotypic synonym, validly published under the ICNP
    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
    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: Martinez-Romero E, Segovia L, Mercante FM, Franco AA, Graham P, Pardo MA. Rhizobium tropici, a novel species nodulating Phaseolus vulgaris L. beans and Leucaena sp. trees. Int J Syst Bacteriol 1991; 41:417-426. 🇲🇽
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of DallAgnol et al. (2014). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • ❗ Martinezella 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 phylogenomic assignment score of this taxon is 0.15019 (N = 34).
  • 🎰 The BRCs most frequently used for deposits in this group are: LMG: 8; DSM: 6; CECT: 5; HAMBI: 4; CIP: 4; ATCC: 4; CNPSo: 3; JCM: 3; NBRC: 3; IFO: 2.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 12
Total number of child taxa: 12

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Martinezella calliandrae (Rincón-Rosales et al. 2013) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella dioscoreae (Ouyabe et al. 2020) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella freirei (Dall'Agnol et al. 2013) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella hainanensis (Chen et al. 1997) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella jaguaris (Rincón-Rosales et al. 2013) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella leucaenae (Ribeiro et al. 2012) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella lusitana (Valverde et al. 2006) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella miluonensis (Gu et al. 2008) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella multihospitum corrig. (Han et al. 2008) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella paranaensis (Dall'Agnol et al. 2014) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella rhizogenes (Riker et al. 1930) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    Martinezella tropici (Martínez-Romero et al. 1991) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym

Parent taxon: Rhizobiaceae Conn 1938 (Approved Lists 1980)

Assigned by: Naranjo-Robayo N, Harrison TL, Esme O, Menendez E, Kuzmanovic N, Peix A, Young JPW, diCenzo GC. Updated taxonomy of the family Rhizobiaceae with proposals for 8 novel genera and 32 novel combinations. Int J Syst Evol Microbiol 2026; 76:7131. 🇨🇦

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.71598Copy to clipboardLink copied to clipboard

Record number: 71598

• Previous versions:

  • Version	Date	JSON
    1	2026-05-21