Name: Derxia gummosa Jensen et al. 1960 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: gum.mo’sa. L. fem. adj. gummosa, full of gum, gummy, intended to mean slime (gum) producing

Pronunciation (Latin), gender: DER-xi-a gum-MO-sa, feminine

Type strain: ATCC 15994; DSM 723; JCM 20996; LMG 3977; NBRC 102506; NRRL B-14655; NRRL B-4319

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB681840 Analyse FASTA

Effective publication: Jennsen HL, Petersen EJ, De PK, Bhattacharya R. A new nitrogen-fixing bacterium: Derxia gummosa nov.gen.nov.spec. Arch Mikrobiol 1960; 36:182-195.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Derxia Jensen et al. 1960 (Approved Lists 1980). Publication: Jennsen HL, Petersen EJ, De PK, Bhattacharya R. A new nitrogen-fixing bacterium: Derxia gummosa nov.gen.nov.spec. Arch Mikrobiol 1960; 36:182-195.
  • 😷 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. — 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 8 times in PubMed until 2026-06-11.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683. 🇺🇸

Parent taxon: Derxia Jensen et al. 1960 (Approved Lists 1980)

Assigned by: Jennsen HL, Petersen EJ, De PK, Bhattacharya R. A new nitrogen-fixing bacterium: Derxia gummosa nov.gen.nov.spec. Arch Mikrobiol 1960; 36:182-195.

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Record number: 775514