| Abstract: | The isoflavone glucosides daidzin, genistin and ononin, the isoflavones daidzein and formononetin, and glyceollins I-III accumulated in soybean leaves inoculated with phytopathogenic bacteria. Treatment of leaves with sodium iodoacetate or yeast extract also led to isoflavonoid accumulation. Various other stress-inducing treatments were not effective. Bacterially-induced accumulation of isoflavone glucosides and the occurrence of ononin and formononetin in soybean are reported for the first time. |
