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Species Rhizobium freirei
Name: Rhizobium freirei Dall'Agnol et al. 2013
Etymology: frei’re.i. N.L. gen. masc. n. freirei, of Freire, named after Professor João Ruy Jardim Freire, a distinguished Brazilian rhizobiologist
Pronunciation, gender: FRE͡I-re-i, neuter
Type strain: CNPSo 122; IPR Pv81; LMG 27576; PRF 81; SEMIA 4080; WDCM 440
See detailed strain information at
Conduct genome-based taxonomy at
16S rRNA gene:
EU488742
Analyse
FASTA
Valid publication:
Dall'Agnol RF, Ribeiro RA, Ormeno-Orrillo E, Rogel MA, Delamuta JR, Andrade DS, Martinez-Romero E, Hungria M. Rhizobium freirei sp. nov., a symbiont of Phaseolus vulgaris that is very effective at fixing nitrogen. Int J Syst Evol Microbiol 2013; 63:4167-4173. 
IJSEM list:
Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 63, part 11 of the IJSEM. Int J Syst Evol Microbiol 2014; 64:313-315.
Nomenclatural status: validly published under the ICNP
Taxonomic status: correct name (and explicitly recommended for medical use)
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Notes:
- 🧬 The phylogenomic assignment score of this taxon is 0.02079 (N = 18).
- 😷 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 2025-06-04.
- 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of other species in the genus.
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🧍 The phylogenetic position of this species was determined in a genome-scale analysis by Hördt et al. (2020).
Publication:
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.
Parent taxon: Rhizobium Frank 1889 (Approved Lists 1980)
Assigned by:
Dall'Agnol RF, Ribeiro RA, Ormeno-Orrillo E, Rogel MA, Delamuta JR, Andrade DS, Martinez-Romero E, Hungria M. Rhizobium freirei sp. nov., a symbiont of Phaseolus vulgaris that is very effective at fixing nitrogen. Int J Syst Evol Microbiol 2013; 63:4167-4173.
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Record number: 791287
This LPSN page was printed on 2025-11-15 00:23:48