Species ***Rhizobium* *rhizogenes***

Name: Rhizobium rhizogenes (Riker et al. 1930) Young et al. 2001

Category: Species

Proposed as: comb. nov.

Basonym: "Phytomonas rhizogenes" Riker et al. 1930

Etymology: rhi.zo’ge.nes. Gr. fem. n. rhiza, root; Gr. suff. -genes, producing; from Gr. ind. v. gennaô, to produce; N.L. neut. part. adj. rhizogenes, root-producing

Pronunciation (Latin), gender: r^hi-ZO-bi-um r^hi-ZO-ge-nes, neuter

Type strain: ATCC 11325; CECT 4117; CFBP 5520; CIP 104328; DSM 30148; HAMBI 1816; ICMP 5794; IFO 13257; JCM 20919; LMG 150; NBRC 13257; NCPPB 2991

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: D14501 Analyse FASTA

Valid publication: Young JM, Kuykendall LD, Martinez-Romero E, Kerr A, Sawada H. A revision of Rhizobium Frank 1889, with an emended description of the genus, and the inclusion of all species of Agrobacterium Conn 1942 and Allorhizobium undicola de Lajudie et al. 1998 as new combinations: Rhizobium radiobacter, R. rhizogenes, R. rubi, R. undicola and R. vitis. Int J Syst Evol Microbiol 2001; 51:89-103. 🇺🇸

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 1 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:269.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

Synonyms:

Name	Kind
Martinezella rhizogenes (Riker et al. 1930) Naranjo-Robayo et al. 2026	homotypic synonym, validly published under the ICNP
Agrobacterium rhizogenes (Riker et al. 1930) Conn 1942 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
"Phytomonas rhizogenes" Riker et al. 1930	homotypic synonym, not validly published, basonym of name in Approved Lists

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 0.01853 (N = 21).
- 😷 The risk group for Belgium has been imported on 2024-02-01. The full classification is: risk group = 1, note = "plant pathogen - biological class of risk plant: 2". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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 2026-08-13. The full classification is: risk group = 1, note = "p". — 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 109 times in PubMed until 2026-06-11.
- 🙆 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 risk group of other species in the genus.
- 🧍 Plant pathogenic according to Bull et al. (2007). Publication: Bull CT, De Boer SH, Denny TP, Firrao G, Fischer Le Saux M, Saddler GS, Scortichini M, Stead DE, Takikawa Y. Comprehensive list of names of plant pathogenic bacteria, 1980-2007. Journal of Plant Pathology 2010; 92:551-592. 🇺🇸

Parent taxon: Rhizobium Frank 1889 (Approved Lists 1980)

Assigned by: Young JM, Kuykendall LD, Martinez-Romero E, Kerr A, Sawada H. A revision of Rhizobium Frank 1889, with an emended description of the genus, and the inclusion of all species of Agrobacterium Conn 1942 and Allorhizobium undicola de Lajudie et al. 1998 as new combinations: Rhizobium radiobacter, R. rhizogenes, R. rubi, R. undicola and R. vitis. Int J Syst Evol Microbiol 2001; 51:89-103. 🇺🇸

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.780374Link copied to clipboard

Record number: 780374

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Species Rhizobium rhizogenes

Species ***Rhizobium* *rhizogenes***