Phytoremediation of contaminated soils by heavy metals - “Case Tomato”
This work aimed to evaluate the accumulation of cadmium (Cd) in the organs of young tomato plants (Lycopersicon esculentum Mill. 'Rio Grande') and its effect on activities of enzymes involved in the antioxidant system, catalase (CAT), glutathione S‑transferase (GST) and ascorbate peroxidase (APX). Plants previously grown on a nutrient solution underwent treatment with increasing concentrations of CdCl2 (0, 50, 100, 250 and 500 µM) for 7 days. The results showed greater accumulation of cadmium in disks in roots (70%) relative to shoots (30%). This accumulation was based on increasing concentrations of the metal. Parallel treatment with different concentrations of Cd appeared to induce the activity of the enzymes studied (CAT, APX, GST), especially for lower concentrations (50 and 100 µM), while they are inhibited at the highest concentrations (100 and 250 μM).
Sbartai, H., Sbartai, I., Djebar, M.R. and Berrebbah, H. (2017). Phytoremediation of contaminated soils by heavy metals - “Case Tomato”. Acta Hortic. 1159, 95-100
cadmium, accumulation, enzyme activities, oxidative stress, Lycopersicon esculentum