Name: Allomesorhizobium Li et al. 2025

Category: Genus

Proposed as: gen. nov.

Etymology: Al.lo.me.so.rhi.zo’bi.um. Gr. masc. pron. allos, other; N.L. neut. n. Mesorhizobium, a bacterial genus name; N.L. neut. n. Allomesorhizobium, a new group phylogenetically separated from the genus Mesorhizobium

Gender, pronunciation (Latin): neuter (stem: Allomesorhizobi-), al-lo-me-so-r^hi-ZO-bi-um

Type species: Allomesorhizobium alhagi (Chen et al. 2010) Li et al. 2025

Effective publication: Li Y, Guo T, Sun L, Wang ET, Young JPW, Tian CF. Phylogenomic analyses and reclassification of the Mesorhizobium complex: proposal for 9 novel genera and reclassification of 15 species. BMC Genomics 2024; 25:419. 🇨🇳

IJSEM list: Oren A, Göker M. Validation list no. 221. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2025; 75:6562.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Mesorhizobium Jarvis et al. 1997

• Synonyms:

  • Name	Kind
    Neomesorhizobium Li et al. 2025	heterotypic synonym, validly published under the ICNP
    Mesorhizobium Jarvis et al. 1997	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 Mesorhizobium Jarvis et al. 1997. Publication: Chen WM, Zhu WF, Bontemps C, Young JP, Wei GH. Mesorhizobium alhagi sp. nov., isolated from wild Alhagi sparsifolia in north-western China. Int J Syst Evol Microbiol 2010; 60:958-962. 🇨🇳
  • 🧔 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. 🇫🇮
  • ❗ Allomesorhizobium 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 0.02631 (N = 19).
  • 🎰 The BRCs most frequently used for deposits in this group are: ACCC: 2; HAMBI: 2; DSM: 1.
  • 🧍 The distinct name Neomesorhizobium from the same publication has a similar spelling. Publication: Angell RC, Freund GE, Willett P. Automatic spelling correction using a trigram similarity measure. Information Processing and Management 1983; 19:255-261.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Allomesorhizobium alhagi (Chen et al. 2010) Li et al. 2025	validly published under the ICNP	synonym
    Allomesorhizobium camelthorni (Chen et al. 2011) Li et al. 2025	validly published under the ICNP	synonym

Parent taxon: Phyllobacteriaceae Mergaert and Swings 2006

Assigned by: Li Y, Guo T, Sun L, Wang ET, Young JPW, Tian CF. Phylogenomic analyses and reclassification of the Mesorhizobium complex: proposal for 9 novel genera and reclassification of 15 species. BMC Genomics 2024; 25:419. 🇨🇳

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Record number: 57157