Species ***Mesorhizobium* *erdmanii***

Name: Mesorhizobium erdmanii Martínez-Hidalgo et al. 2015

Category: Species

Proposed as: sp. nov.

Etymology: erd.ma’ni.i. N.L. gen. masc. n. erdmanii, named after L. W. Erdman (deceased), who made valuable contributions to rhizobia research

Pronunciation (Latin), gender: me-so-r^hi-ZO-bi-um erd-MA-ni-i, neuter

Type strain: CECT 8631; LMG 17826t2; USDA 3471

Conduct genome-based taxonomy at

16S rRNA gene: KM192334 Analyse FASTA

Valid publication: Martinez-Hidalgo P, Ramirez-Bahena MH, Flores-Felix JD, Rivas R, Igual JM, Mateos PF, Martinez-Molina E, Leon-Barrios M, Peix A, Velazquez E. Revision of the taxonomic status of type strains of Mesorhizobium loti and reclassification of strain USDA 3471T as the type strain of Mesorhizobiumerdmanii sp. nov. and ATCC 33669T as the type strain of Mesorhizobiumjarvisii sp. nov. Int J Syst Evol Microbiol 2015; 65:1703-1708. 🇪🇸

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 65, part 6 of the IJSEM. Int J Syst Evol Microbiol 2015; 65:2784-2785.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

Emendations:
- Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

Notes:
- 🧬 The phylogenomic assignment score of this taxon is 0.09319 (N = 27).
- 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
- 🎓 Name mentioned 4 times in PubMed until 2026-06-11.
- 🪓 Organisms assigned to this species have previously been classified as Mesorhizobium loti (Jarvis et al. 1982) Jarvis et al. 1997. Publication: Jarvis BDW, Van Berkum P, Chen WX, Nour SM, Fernandez MP, Cleyet-Marel JC, Gillis M. Transfer of Rhizobium loti, Rhizobium huakuii, Rhizobium ciceri, Rhizobium mediterraneum, and Rhizobium tianshanense to Mesorhizobium gen. nov. Int. J. Syst. Bacteriol. 1997; 47:895-898. 🇳🇿 Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 47, part 3 of the IJSB. Int J Syst Bacteriol 1997; 47:1275-1276.
- 🧍 USDA 3471 was previously designated as type strain of Rhizobium loti Jarvis et al. 1982. Martínez-Hidalgo et al. 2015 showed, that the strain USDA 3471 is no longer identical to the original type strain of Rhizobium loti Jarvis et al. 1982, NZP 2213, and that it represents a novel species in the genus Rhizobium. Publication: Jarvis BDW, Pankhurst CE, Patel JJ. Rhizobium loti, a new species of legume root nodule bacteria. Int. J. Syst. Bacteriol. 1982; 32:378-380. 🇳🇿

Parent taxon: Mesorhizobium Jarvis et al. 1997

Assigned by: Martinez-Hidalgo P, Ramirez-Bahena MH, Flores-Felix JD, Rivas R, Igual JM, Mateos PF, Martinez-Molina E, Leon-Barrios M, Peix A, Velazquez E. Revision of the taxonomic status of type strains of Mesorhizobium loti and reclassification of strain USDA 3471T as the type strain of Mesorhizobiumerdmanii sp. nov. and ATCC 33669T as the type strain of Mesorhizobiumjarvisii sp. nov. Int J Syst Evol Microbiol 2015; 65:1703-1708. 🇪🇸

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Record number: 792885

This LPSN page was printed on 2026-08-14 12:05:05

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Species Mesorhizobium erdmanii

Species ***Mesorhizobium* *erdmanii***