Bradyrhizobium elkanii

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Bradyrhizobium elkanii
Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Alphaproteobacteria
Order: Rhizobiales
Family: Bradyrhizobiaceae
Genus: Bradyrhizobium
Species: B. elkanii
Binomial name
Bradyrhizobium elkanii
Kuykendall et al., 1993[1][2]

Bradyrhizobium elkanii is a species of legume-root nodulating, microsymbiotic nitrogen-fixing bacterium originally identified as DNA homology group II strains of B. japonicum .[3] In 1988, it was discovered that only DNA homology group II strains caused a destructive bleaching of leaves, termed scientifically "microsymbiont-induced foliar chlorosis", which was widespread in soybean production fields of the southern United States .[4] Whole cell fatty acid content together with antibiotic resistance profiles were major phenotypic differences that helped establish DNA homology group II strains as a new species, Bradyrhizobium elkanii .[5]


  1. ^ L. D. Kuykendall, B. Saxena, T. E. Devine & S. E. Udell (1992). "Genetic diversity in Bradyrhizobium japonicum Jordan 1982 and a proposal for B. elkanii sp. nov". Canadian Journal of Microbiology. 38 (6): 501–505. doi:10.1139/m92-082. 
  2. ^ "Validation of the publication of new names and new combinations previously effectively published uutside the IJSB: List No. 45". International Journal of Systematic and Evolutionary Microbiology. 43 (2): 398–399. 1993. doi:10.1099/00207713-43-2-398. 
  3. ^ A. B. Hollis, W. E. Kloos & G. E. Elkan (1981). "DNA:DNA hybridization studies of Rhizobium japonicum and related Rhizobiaceae". Journal of General Microbiology. 123: 215–222. doi:10.1099/00221287-123-2-215. 
  4. ^ T. E. Devine, L. D. Kuykendall & J. J. O’Neill (1988). "DNA homology group and the identity of bradyrhizobial strains producing rhizobitoxine-induced chlorosis on soybeans". Crop Science. 28: 939–941. 
  5. ^ L. D. Kuykendall, M. A. Roy, J. J. O’Neill & T. E. Devine (1988). "Fatty acids, multiple antibiotic resistance, and DNA homology groups of Bradyrhizobium japonicum". International Journal of Systematic and Evolutionary Microbiology. 37: 358–361. 

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