Name: Sinorhizobium americanum corrig. Toledo et al. 2004

Category: Species

Proposed as: sp. nov.

Etymology: a.me.ri.ca’num. N.L. neut. adj. americanum, American, pertaining to the American continent

Pronunciation (Latin), gender: … a-me-ri-KA-num, neuter

Type strain: ATCC BAA-532; CFNEI 156; CIP 108390; DSM 15007

Conduct genome-based taxonomy at

16S rRNA gene: AF506513 Analyse FASTA

Effective publication: Toledo I, Lloret L, Martinez-Romero E. Sinorhizobium americanus sp. nov., a new Sinorhizobium species nodulating native Acacia spp. in Mexico. Syst Appl Microbiol 2003; 26:54-64. 🇲🇽

IJSEM list: Euzeby JP. Validation list no. 100. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2004; 54:1909-1910.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Ensifer americanus corrig. (Toledo et al. 2004) Wang et al. 2015

Risk group: 1

• Synonyms:

  • Name	Kind
    Ensifer americanum (Toledo et al. 2004) Wang et al. 2015	homotypic synonym, inaccurate spelling
    Ensifer americanus corrig. (Toledo et al. 2004) Wang et al. 2015	homotypic synonym, validly published under the ICNP
    Sinorhizobium americanus Toledo et al. 2004	other spelling of name, inaccurate spelling

• Emendations:
  • Kuzmanović et al. 2022 Kuzmanovic N, Fagorzi C, Mengoni A, Lassalle F, diCenzo GC. Taxonomy of Rhizobiaceae revisited: proposal of a new framework for genus delimitation. Int J Syst Evol Microbiol 2022; 72:5243. 🇨🇦
    Notes:
    • 🧍 This name was not found in the expected IJSEM notification list.

• Notes:
  • ❗ Sinorhizobium americanum is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Sinorhizobium.
  • 😷 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 9 times in PubMed until 2025-06-04.
  • 🧍 The specific epithet has been corrected on validation. Publication: Euzeby JP. Validation list no. 100. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2004; 54:1909-1910.
  • 🧍 The correct spelling of the specific epithet (erroneously cited as americanus in the effective publication) and its etymology have been provided by the way of an erratum (Syst Appl Microbiol 2003, 26, 319). Publication: Euzeby JP. Validation list no. 100. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2004; 54:1909-1910.
  • 🧍 The correct spelling of the specific epithet (erroneously cited as americanus [sic] in the effective publication) and its etymology have been provided by the way of an erratum (Syst Appl Microbiol 2003, 26, 319). — 🧍 The culture collection accession number CIP 108390 has been provided on request for validation. Publication: Euzeby JP. Validation list no. 98. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2004; 54:1005-1006.

Parent taxon: Sinorhizobium Chen et al. 1988

Assigned by: Toledo I, Lloret L, Martinez-Romero E. Sinorhizobium americanus sp. nov., a new Sinorhizobium species nodulating native Acacia spp. in Mexico. Syst Appl Microbiol 2003; 26:54-64. 🇲🇽

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Record number: 780935