Uptake and translocation of 109Cd and stable Cd within tobacco plants (Nicotiana sylvestris)

► We compared uptake recently added and naturally occurring soil Cd by tobacco plant. ► Both added and stable Cd display similar uptake and translocation within the plant. ► Leaves of tobacco plants accumulate half of the total Cd taken up by the plant. ► Recently added 109Cd to soil is more available than naturally occurring cadmium.