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  • Title: Excessive sulfur supply reduces cadmium accumulation in brown rice (Oryza sativa L.).
    Author: Fan JL, Hu ZY, Ziadi N, Xia X, Wu CY.
    Journal: Environ Pollut; 2010 Feb; 158(2):409-15. PubMed ID: 19781829.
    Abstract:
    Human activities have resulted in cadmium (Cd) and sulfur (S) accumulation in paddy soils in parts of southern China. A combined soil-sand pot experiment was conducted to investigate the influence of excessive S supply on iron plaque formation and Cd accumulation in rice plants, using two Cd levels (0, 1.5 mg kg(-1)) combined with three S concentrations (0, 60, 120 mg kg(-1)). The results showed that excessive S supply significantly decreased Cd accumulation in brown rice due to the decrease of Cd availability and the increase of glutathione in rice leaves. But excessive S supply obviously increased Cd accumulation in roots due to the decrease of iron plaque formation on the root surface of rice. Therefore, excessive S supply may result in loss of rice yield, but it could effectively reduce Cd accumulation in brown rice exposed to Cd contaminated soils.
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