Abstract

The availability, uptake, and translocation of recently added (109Cd) and naturally occurring (stable) soil Cd within tobacco plants were compared. 109Cd was added to soil in two treatments, A (0.25 MBq kg soil1 DW) and B (eight-fold dose): stable Cd was measured in both treatments. Both the added and the stable Cd were higher in leaves and reproductive structures of the plant than in stalks and roots. The uptake of 109Cd was 5.3 kBq plant1 for treatment A and 36.7 kBq plant1 for treatment B, and about 26 mg plant1 for stable Cd. Leaves of the tobacco plants accumulated 40e45% of the total 109Cd and about 50% of total stable Cd taken up by the plant. Cadmium concentration in the plant was three times higher than in roots and two times higher than the concentration in soil: the concentration in roots was lower than in the soil.

Keywords

109Cd Translocation Tissue specificity Leaves Roots

Published in

Journal of Environmental Radioactivity
2012, volume: 113, pages: 16-20

Authors' information