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Adequate Supply of Sulfur Simultaneously Enhances Iron Uptake and Reduces Cadmium Accumulation in Rice Grown in Hydroponic Culture by Zeying Wu; Sadiq Naveed; Chunhua Zhang; Ying Ge is a Environmental Science article available to read on EtoBox.

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Cadmium (Cd) pollution poses serious risks to human health and the rice consumption is a major contribution to dietary intake of this toxic metal. In addition, Cd causes interference to iron (Fe) uptake by rice, leading to Fe deficiency, which is a common malnutrition worldwide. Sulfur (S) is essential for the rice yield and quality; however, the roles of S supply in the Cd and Fe absorption and distribution in rice have not been systematically investigated. Here, we conducted a hydroponic experiment to examine the effects of S application on the uptake and translocation of Cd and Fe in rice under Cd treatment (1.0 μM) combined with four S levels (0, 1.75, 3.5, 7.0 mM). Rice growth was suppressed by Cd but the toxicity was alleviated with S treatment, which also led to decline of Cd concentrations in rice roots, stems and leaves. In the case of low S (1.75 mM), the Fe plaque on the root surface did not decline in the presence of Cd, but it markedly decreased with the increase of S supply (3.5 and 7.0 mM). The Fe contents in rice roots and leaves consistently increased with the S provision regardless of Cd treatment. In addition, the Cd exposure and S supply significantly promoted s

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Author

Zeying Wu; Sadiq Naveed; Chunhua Zhang; Ying Ge

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV; Publons (ISSN 0269-7491)

Published

2020

Language

EN

Field

Environmental Science (Physical Sciences)