Abstract
Cadmium (Cd) pollution and acid rain are the main environmental issues, and they often occur in the same agricultural region. Nevertheless, up to now, little information on the combined pollution of Cd2+ and acid rain action on crops were presented. Here, we investigated the combined effect of Cd2+ and acid rain on the seed germination of soybean. The results indicated that the single treatment with the low level of Cd2+ (0.18, 1.0, 3.0 mg L−1) or acid rain (pH ≥3.0) could not affect the seed germination of soybean, which was resulted in the increased activities of peroxidase and catalase. The single treatment with the high concentration of Cd2+ (>6 mg L−1) or acid rain at pH 2.5 decreased the activities of peroxidase and catalase, damaged the cell membrane and then decreased the seed germination of soybean. Meanwhile, the same toxic effect was observed in the combined treatment with Cd2+ and acid rain, and the combined treatment had more toxic effect than the single treatment with Cd2+ or acid rain. Thus, the combined pollution of Cd2+ and acid rain had more potential threat to the seed germination of soybean than the single pollution of Cd2+ or acid rain.
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The authors are grateful for the financial support of the Foundation of State Planning Committee (GJX01100626) and Foundation of Project of Education and Teaching Reform in Higher Education of Jiangsu Province (3-26-77).
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Liu, T.T., Wu, P., Wang, L.H. et al. Response of Soybean Seed Germination to Cadmium and Acid Rain. Biol Trace Elem Res 144, 1186–1196 (2011). https://doi.org/10.1007/s12011-011-9053-6
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DOI: https://doi.org/10.1007/s12011-011-9053-6