Name: Neorhizobium Mousavi et al. 2015

Category: Genus

Proposed as: gen. nov.

Etymology: Ne.o.rhi.zo’bi.um. Gr. masc. adj. neos, new (may keep -o); N.L. neut. n. Rhizobium, a bacterial generic name; N.L. neut. n. Neorhizobium, the new Rhizobium, to refer to the fact that it is a new group of Rhizobium

Gender, pronunciation (Latin): neuter (stem: Neorhizobi-), ne-o-r^hi-ZO-bi-um

Type species: Neorhizobium galegae (Lindström 1989) Mousavi et al. 2015

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Mousavi SA, Osterman J, Wahlberg N, Nesme X, Lavire C, Vial L, Paulin L, de Lajudie P, Lindstrom K. Phylogeny of the Rhizobium-Allorhizobium-Agrobacterium clade supports the delineation of Neorhizobium gen. nov. Syst Appl Microbiol 2014; 37:208-215. 🇫🇮

IJSEM list: Oren A, Garrity GM. Validation list no. 161. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2015; 65:1-4.

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 Rhizobium Frank 1889 (Approved Lists 1980). Publication: Lindström K. Rhizobium galegae, a new species of legume root nodule bacteria. Int. J. Syst. Bacteriol. 1989; 39:365-367.
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: de Lajudie PM, Young JPW. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of rhizobia and agrobacteria Minutes of the closed meeting, Granada, 4 September 2017. Int J Syst Evol Microbiol 2018; 68:3363-3368. 🇫🇷
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: de Lajudie P, Young JPW. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Rhizobia and Agrobacteria Minutes of the meeting by video conference, 11 July 2018. Int J Syst Evol Microbiol 2019; 69:1835-1840. 🇫🇷
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: de Lajudie PM, Young JPW. International Committee on Systematics of Prokaryotes Subcommittee for the Taxonomy of Rhizobium and Agrobacterium Minutes of the meeting, Budapest, 25 August 2016. Int J Syst Evol Microbiol 2017; 67:2485-2494. 🇫🇷
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Rhizobia and Agrobacteria. Minutes of the closed annual meeting: videoconference on 11 October 2022 followed by online discussion until 31 December 2022. Int J Syst Evol Microbiol 2023; 73:5856. 🇬🇧
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International Committee on Systematics of Prokaryotes, Subcommittee on the taxonomy of Rhizobia and Agrobacteria, minutes of the annual meeting by videoconference, 5 July 2021, followed by online discussion until 31 December 2021. Int J Syst Evol Microbiol 2022; 72:5453. 🇫🇮
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Rhizobia and Agrobacteria: Minutes of the closed annual meeting, videoconference on 2 October 2023, followed by online discussion until 31 December 2023. Int J Syst Evol Microbiol 2024; 74:6276. 🇫🇮
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International Committee on Systematics of Prokaryotes Subcommittee on the taxonomy of Rhizobia and Agrobacteria: minutes of the 2024 closed annual meeting. Int J Syst Evol Microbiol 2025; 75:6680. 🇫🇮
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mousavi SA, Young JPW. International committee on systematics of prokaryotes subcommittee on the taxonomy of rhizobia and agrobacteria: Minutes of the 2025 closed annual meeting. Int J Syst Evol Microbiol 2026; 76:7149. 🇫🇮
  • 🧬 The phylogenomic assignment score of this taxon is 0.10288 (N = 22).
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 7; LMG: 6; JCM: 6; HAMBI: 5; CIP: 3; ACCC: 3; KCTC: 2; NBRC: 2; ATCC: 2; IFO: 1.

Subdivision:

Number of child taxa with a validly published and correct name: 10
Number of child taxa with a validly published name, including synonyms: 12
Total number of child taxa: 17

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Neorhizobium alkalisoli (Lu et al. 2009) Mousavi et al. 2015	validly published under the ICNP	correct name
    Neorhizobium descurainiae Kämpfer et al. 2026	validly published under the ICNP	correct name
    "Neorhizobium deserti" (Liu et al. 2020) Ma et al. 2023	not validly published	preferred name
    Neorhizobium galegae (Lindström 1989) Mousavi et al. 2015	validly published under the ICNP	correct name
    Neorhizobium huautlense (Wang et al. 1998) Mousavi et al. 2015	validly published under the ICNP	correct name
    "Neorhizobium lilium" Liu et al. 2020	not validly published	preferred name
    Neorhizobium petrolearium (Zhang et al. 2012) Kuzmanović et al. 2022	validly published under the ICNP	correct name
    "Neorhizobium phenanthreniclasticum" Golubev et al. 2024	not validly published	preferred name
    Neorhizobium populisoli (Shen et al. 2022) Ma et al. 2025	validly published under the ICNP	correct name
    Neorhizobium puerariae (Boonsnongcheep et al. 2016) Naranjo-Robayo et al. 2026	validly published under the ICNP	synonym
    "Neorhizobium terrae" (Ruan et al. 2021) Ma et al. 2023	not validly published	synonym
    Neorhizobium tomejilense Soenens et al. 2020	validly published under the ICNP	correct name
    Neorhizobium tunisiense Sbissi et al. 2025	validly published under the ICNP	correct name
    Neorhizobium turbinariae Sun et al. 2023	validly published under the ICNP	correct name
    "Neorhizobium urealyticum" Roychowdhury et al. 2021	not validly published	preferred name
    Neorhizobium vignae (Ren et al. 2011) Hördt et al. 2020	validly published under the ICNP	correct name
    Neorhizobium xiangyangii Pan et al. 2022	validly published under the ICNP	synonym

Parent taxon: Rhizobiaceae Conn 1938 (Approved Lists 1980)

Assigned by: Mousavi SA, Osterman J, Wahlberg N, Nesme X, Lavire C, Vial L, Paulin L, de Lajudie P, Lindstrom K. Phylogeny of the Rhizobium-Allorhizobium-Agrobacterium clade supports the delineation of Neorhizobium gen. nov. Syst Appl Microbiol 2014; 37:208-215. 🇫🇮

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Record number: 518659