Journal Article10.1093/JEXBOT/52.364.2115
Cadmium‐induced changes in the growth and oxidative metabolism of pea plants
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TL;DR: Results obtained suggest that growth of pea plants with CdCl(2) can induce a concentration-dependent oxidative stress situation in leaves, characterized by an accumulation of lipid peroxides and oxidized proteins as a result of the inhibition of the antioxidant systems.
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Abstract: The effect of growing pea (Pisum sativum L.) plants with CdCl(2) (0-50 microM) on different plant physiological parameters and antioxidative enzymes of leaves was studied in order to know the possible involvement of this metal in the generation of oxidative stress. In roots and leaves of pea plants Cd produced a significant inhibition of growth as well as a reduction in the transpiration and photosynthesis rate, chlorophyll content of leaves, and an alteration in the nutrient status in both roots and leaves. The ultrastructural analysis of leaves from plants grown with 50 microM CdCl(2), showed cell disturbances characterized by an increase of mesophyll cell size, and a reduction of intercellular spaces, as well as severe disturbances in chloroplast structure. Alterations in the activated oxygen metabolism of pea plants were also detected, as evidenced by an increase in lipid peroxidation and carbonyl-groups content, as well as a decrease in catalase, SOD and, to a lesser extent, guaiacol peroxidase activities. Glutathione reductase activity did not show significant changes as a result of Cd treatment. A strong reduction of chloroplastic and cytosolic Cu,Zn-SODs by Cd was found, and to a lesser extent of Fe-SOD, while Mn-SOD was only affected by the highest Cd concentrations. Catalase isoenzymes responded differentially, the most acidic isoforms being the most sensitive to Cd treatment. Results obtained suggest that growth of pea plants with CdCl(2) can induce a concentration-dependent oxidative stress situation in leaves, characterized by an accumulation of lipid peroxides and oxidized proteins as a result of the inhibition of the antioxidant systems. These results, together with the ultrastructural data, point to a possible induction of leaf senescence by cadmium.
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Influence of cadmium on the uptake, tissue accumulation and subcellular distribution of manganese in pea seedlings
TL;DR: Pea (Pisum sativum L. cv. Argona) plants were challenged with Cd in a pure hydroponic system to study the effects on the uptake, tissue accumulation and subcellular distribution of Mn and Fe and showed that plants treated with 10 μM Cd suffered moderate stress, whereas those given 50 μM experienced an strong phytotoxic effect.
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Effects of cadmium on nutrient distribution, yield, and growth of tomato grown in soilless culture
TL;DR: In this paper, the effect of cadmium (Cd) on nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sodium (Na) and the micronutrients iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), and boron (B) on tomato plants was studied.
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