Name: Mesorhizobium loti (Jarvis et al. 1982) Jarvis et al. 1997

Category: Species

Proposed as: comb. nov.

Basonym: Rhizobium loti Jarvis et al. 1982

Etymology: lo’ti. L. masc. n. Lotus, the name of several plants and also the generic name of leguminous plants (Lotus); L. gen. masc. n. loti, of Lotus

Gender: neuter

Type strain: ATCC 700743; CCUG 27878; DSM 2626; HAMBI 1129; IFO 14779; JCM 21464; LMG 6125; NBRC 14779; NZP 2213

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KM192337 Analyse FASTA

Valid 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.

IJSEM list: 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.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Rhizobium loti Jarvis et al. 1982	homotypic synonym, validly published under the ICNP

• Emendations:
  • Martínez-Hidalgo et al. 2015 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. 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.
  • Hameed et al. 2015 Hameed A, Shahina M, Lai WA, Lin SY, Young LS, Liu YC, Hsu YH, Young CC. Oricola cellulosilytica gen. nov., sp. nov., a cellulose-degrading bacterium of the family Phyllobacteriaceae isolated from surface seashore water, and emended descriptions of Mesorhizobium loti and Phyllobacterium myrsinacearum. Antonie Van Leeuwenhoek 2015; 107:759-771. Oren A, Garrity GM. List of changes in taxonomic opinion no. 22. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2015; 65:2028-2029.
  • 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:
  • 🥇 Nomenclatural type of the genus Mesorhizobium 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.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 417 times in PubMed until 2024-03-27.
  • 🧍 The ATCC accessioned in its place the strain ATCC 700743 [2]. — Tang J. Personal communication, 2002-06-14.
  • 🧍 The strain ATCC 33669, designated as the type strain of Rhizobium loti and the type strain of Mesorhizobium loti, is a mixed culture [1] and has been deaccessioned by the ATCC [2]. Publication: Willems A, Hoste B, Tang J, Janssens D, Gillis M. Differences between subcultures of the Mesorhizobium loti type strain from different culture collections. Syst Appl Microbiol 2001; 24:549-553.

Parent taxon: Mesorhizobium Jarvis et al. 1997

Assigned by: 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.

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Record number: 777772