Cadmium and Zinc are differentially distributed in Populus tremula x P. alba exposed to metal excess |
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| Authors: | T C Durand P Baillif P Albéric S Carpin P Label J-F Hausman |
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| Institution: | 1. Université d'Orléans, UFR-Faculté des Sciences, Laboratoire de Biologie des Ligneux et des Grandes Cultures , UPRES EA 1207, rue de Chartres, BP 6759, 45067 Orléans CEDEX 02, France;2. Institut National de la Recherche Agronomique, USC1328 ‘Arbres et Réponses aux Contraintes Hydrique et Environnementales’ (ARCHE , 45067 Orléans, France;3. CRP-Gabriel Lippmann , Department Environment and Agro-biotechnologies, 41 rue du Brill, L-4422 Belvaux, GD, Luxembourg;4. Institut National de la Recherche Agronomique, UR 588 , 2163 Avenue de la pomme de pin, 45075 Orléans CEDEX 02, France;5. Institut des Sciences de la Terre d'Orléans, UMR 6113?–?CNRS/Université d'Orléans , 1A, rue de la Férollerie F-45071 Orléans CEDEX 02, France;6. Institut National de la Recherche Agronomique, USC1328 ‘Arbres et Réponses aux Contraintes Hydrique et Environnementales’ (ARCHE , 45067 Orléans, France;7. Institut National de la Recherche Agronomique, UR 588 , 2163 Avenue de la pomme de pin, 45075 Orléans CEDEX 02, France;8. CRP-Gabriel Lippmann , Department Environment and Agro-biotechnologies, 41 rue du Brill, L-4422 Belvaux, GD, Luxembourg |
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| Abstract: | Abstract Poplar plants were exposed during 61 days to a soil added with heavy metals so as to contain 300 mg Zn2+.kg?1 soil dry weight (SDW) (Zinc) or 50 mg Cd2+.kg?1 SDW (Cadmium). The Cd treatment induced a delayed growth of poplar, whereas Zn induced no change in physiological parameters. Both treatments resulted in a significant metal accumulation in plants. Zn2+ and Cd2+ exhibited contrasting distribution within tissues, indicating dissimilar handling by the plant. The main difference was the efficient compartmentalisation of Zn2+ in specific organ parts: old leaves and bark, while Cd2+ did not exhibit such a compartmentalisation. Results were also compared with a previous work where plants were exposed to 360 mg Cd2+.kg?1 SDW. |
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| Keywords: | Poplar heavy metal cadmium zinc |
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