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Plant growth promoting rhizobacteria (PGPR) and genistein have been used separately to improve soybean nodulation, nitrogen fixation and yield. Field experiments were conducted to evaluate the combined effect of PGPR and genistein in 1996 and 1997 in Canada. Genistein was used to pre-incubate Bradyrhizobium japonicum strain 532C. Three factors were tested: two genistein concentrations (0 and 20 μM),...
Genistein is the major root produced isoflavonoid inducer of nod genes in the symbiosis between B. japonicum and soybean plants. Reduction in the isoflavonoid content of the host plants has recently been suggested as a possible explanation for the inhibition of mineral nitrogen (N) on the establishment of the symbiosis. In order to determine whether genistein addition could overcome this inhibition,...
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