Pinto, Ana Paula HonradoSerafim, AngelaBebianno, MariaAlmeida Mota, Ana Maria2020-05-142020-05-1420040277-2248http://hdl.handle.net/10400.1/13885Hydroponic experiments with sorghum were carried out in nutrient solution medium, under controlled environmental conditions for different periods of time. Cadmium (Cd ) was added at a final concentration of 0.1, 1 and 10 mg dm−3. The effect of time and cadmium concentration on the content of thiolic groups (TSH) in the “cell sap” of sorghum tissues are discussed in relation to plant resistance/tolerance to metal stress. The increase in Cd level in the nutrient solution was associated with a higher total Cd accumulation in the plant (root and shoot), which produced a significant enhancement on the thiolic groups content. Furthermore, higher Cd concentrations in plant tissues induced not only an increase in sulphur-rich compounds but also enhanced the binding capacity of these compounds.engMetalNutrientPhytochelatinsSolutionStressjournal article10.1080/0277224042000211420