The lectin activity of soybean seeds of both the sowing seeds and the yield seeds received by the pretreatment of sowing seeds with the purified soybean lectin as well as the lectin-rhizobium compositions on the bases of the soybean lectin and nodule bacteria Bradyrhizobium japonicum 634b was studied. It has been demonstrated that the application of compositions with high lectin concentrations (50 and 500 mg/ml) increased lectin activity of yield seeds, whereas a composition with a low lectin content (5 mg/ml) doesn’t increase lectin activity of yield seeds as compared with the sowing material (parental seeds). Application of a purified soybean lectin in concentration 500 mg/ml for the pre-sowing treatment of soybean seeds essentially increased lectin activity of yield seeds. We suggest using of soybean seed lectin at the concentration of 5 mg/ml to modify the rhizobial inoculant for soybean in order to minimize the accumulation of proteins with lectin activity in soybean yield seeds.
Keywords: soybean, lectin, compositions, real lectin activity, specific lectin activity
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