Abstract
Abstract The biological and biochemical studies of the effect of tenuazonic acid on plant cells and seedlings were carried out. Tenuazonic acid exhibited a conspicuous stunting effect on the seedling-growth of rice plant, mung bean, radish and turnip, and on the growth of suspension cultured cells of soybean and rice plants. Tenuazonic acid exhibited no effect on the O2-uptake and the activity of SH-enzyme of the plant, but inhibited the incorporation of 14C-Ieucine into the protein fraction and that of 14C-adenine into nucleic acid fraction of suspension cultured soybean cells as well as these uptake into the cells. And then it has been proved that these incorporation-inhibitions were not merely due to the inhibition of 14C-leucine and 14C-adenine uptake into the cells but based on the intrinsic inhibition of protein and nucleic acid syntheses, respectively.
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