Physiological responses of Lupinus luteus to different copper concentrations
2009
Mourato, M.P.,Instituto Superior de Agronomia, Lisboa (Portugal). Departamento de Quimica Agricola e Ambiental | Martins, L.L.,Instituto Superior de Agronomia, Lisboa (Portugal). Departamento de Quimica Agricola e Ambiental | Campos-Andrada, M.P.,Estacao Agronomica Nacional, Oeiras (Portugal). Departamento de Recursos Geneticos e Melhoramento
Yellow lupin plants were grown in hydroponic solution for 15 d under different copper concentrations (0.1, 0.5, 1.0, 10, 25 and 50 microM). With increasing Cu concentration total biomass was not affected, leaf area slightly decreased, while chlorophyll content decreased considerably. Cu content increased significantly both in roots and in leaves, but the contents of other ions were only slightly affected at the highest Cu concentration (Mn content decreased both in roots and in leaves, P content decreased only in leaves and Zn content increased in roots). Superoxide dismutase activity increased up to day 7 after Cu application. Peroxidase and polyphenol oxidase activities also increased, while catalase activity remained constant.
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