Isoflavonoid-inducible resistance to the phytoalexin glyceollin in soybean rhizobia.

  title={Isoflavonoid-inducible resistance to the phytoalexin glyceollin in soybean rhizobia.},
  author={M Parniske and B Ahlborn and Dietrich Werner},
  journal={Journal of bacteriology},
  volume={173 11},
The antibacterial effect of the soybean phytoalexin glyceollin was assayed using a liquid microculture technique. Log-phase cells of Bradyrhizobium japonicum and Sinorhizobium fredii were sensitive to glyceollin. As revealed by growth rates and survival tests, these species were able to tolerate glyceollin after adaptation. Incubation in low concentrations of the isoflavones genistein and daidzein induced resistance to potentially bactericidal concentrations of glyceollin. This inducible… CONTINUE READING
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