Antioxidative response to cadmium in roots and leaves of tomato plants |
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Authors: | W. B. Ammar I. Nouairi M. Zarrouk M. H. Ghorbel F. Jemal |
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Affiliation: | (1) Unité de Recherche Nutrition et Métabolisme Azotés et Protéines de Stress, Faculté des Sciences de Tunis, Campus Universitaire, 2092 Tunis El Manar, Tunisie;(2) Laboratoire Caractérisation et Qualité de l’Huile d’Olive, Centre de Biotechnologie de Borj-Cedria B, P.901, 2050 Hammam-Lif, Tunisia |
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Abstract: | Treatment of tomato seedlings (Lycopersicon esculentum Mill. cv. 63/5 F1) with increasing CdCl2 concentrations in the culture medium resulted in Cd accumulation more important in roots than in leaves. Biomass production was severely inhibited, even at low Cd concentration. Cd reduced chlorophyll content in leaves and enhanced lipid peroxidation. An increase in antioxidative enzyme (superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, glutathione reductase) activities was more pronounced in leaves than in roots, while catalase activity increased only in roots. In addition, changes in isoenzyme composition were observed using the non-denaturing polyacrylamid gel electrophoresis. |
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Keywords: | KeywordHeading" >Additional lipid peroxidation Lycopersicon esculentum oxidative stress |
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