Effects of Determination of Organic Acids Exuded from Styrax tonkinensis Roots under Heavy Metal Conditions

Abstract

Using different concentrations of heavy metals Cu and Cd to stress the seedlings of Styrax tonkinensis , the organic acids in the root exudates of Styrax tonkinensis were simultaneously deter-mined by high performance liquid chromatography, and the effects of different concentrations of heavy metals Cu and Cd on the content of organic acids in the root exudates of Styrax tonkinensis were studied. The results showed that different concentrations of heavy metals Cu and Cd had great differences in the content of organic acids in the root exudates of Styrax tonkinensis , among which the contents of citric acid and succinic acid after Cu stress were almost zero, and oxalic acid after Cd stress had the greatest effect at the corresponding concentration.