Name: Azospirillum brasilense corrig. Tarrand et al. 1979 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: bra.si.len’se. N.L. neut. adj. brasilense, pertaining to the country of Brazil, South America

Gender: neuter

Type strain: ATCC 29145; DSM 1690; JCM 1224; LMG 13127; NBRC 102289; NRRL B-14647; sp. 7; VKM B-1547

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: GU256438 Analyse FASTA

Effective publication: Tarrand JJ, Krieg NR, Dobereiner J. A taxonomic study of the Spirillum lipoferum group, with descriptions of a new genus, Azospirillum gen. nov. and two species, Azospirillum lipoferum (Beijerinck) comb. nov. and Azospirillum brasilense sp. nov. Can J Microbiol 1978; 24:967-980.

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

• Synonyms:

  • Name	Kind
    Roseomonas fauriae Rihs et al. 1998	heterotypic synonym, validly published under the ICNP
    Azospirillum brasiliense Tarrand et al. 1979 (Approved Lists 1980)	other spelling of name, inaccurate spelling

• 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:
  • According to Helsel et al. (2006), this species is an earlier heterotypic synonym of Roseomonas fauriae Rihs et al. 1998. Publication: Helsel LO, Hollis DG, Steigerwalt AG, Levett PN. Reclassification of Roseomonas fauriae Rihs et al. 1998 as a later heterotypic synonym of Azospirillum brasilense Tarrand et al. 1979. Int J Syst Evol Microbiol 2006; 56:2753-2755.
  • The phylogenomic assignment score of this taxon is 0.08428 (N = 3).
  • According to Bartlett et al. (2022), no evidence of human infection was found for this species. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology 2022; 168:0.
  • The original spelling of the specific epithet, brasiliense (sic), has been corrected by Hill et al. 1984 [1]. However, according to Graesse [2], the Latin name of the country is Brasilia and the specific epithet brasiliense was correct. Publication: Hill LR, Skerman VBD, Sneath PHA. Corrigenda to the Approved Lists of Bacterial Names edited for the International Committee on Systematic Bacteriology. Int. J. Syst. Bacteriol. 1984; 34:508-511.

Parent taxon: Azospirillum Tarrand et al. 1979 (Approved Lists 1980)

Assigned by: Tarrand JJ, Krieg NR, Dobereiner J. A taxonomic study of the Spirillum lipoferum group, with descriptions of a new genus, Azospirillum gen. nov. and two species, Azospirillum lipoferum (Beijerinck) comb. nov. and Azospirillum brasilense sp. nov. Can J Microbiol 1978; 24:967-980.

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Record number: 773591