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  • Title: Assessing the tolerance of castor bean to Cd and Pb for phytoremediation purposes.
    Author: de Souza Costa ET, Guilherme LR, de Melo EE, Ribeiro BT, Dos Santos B Inácio E, da Costa Severiano E, Faquin V, Hale BA.
    Journal: Biol Trace Elem Res; 2012 Jan; 145(1):93-100. PubMed ID: 21826609.
    Abstract:
    This study evaluated Cd and Pb accumulation by castor bean (Ricinus communis cv. Guarany) plants grown in nutrient solution, aiming to assess the plant's ability and tolerance to grow in Cd- and Pb-contaminated solutions for phytoremediation purposes. The plants were grown in individual pots containing Hoagland and Arnon's nutrient solution with increasing concentrations of Cd and Pb. The production of root and shoot dry matter and their contents of Cd, Pb, Ca, Mg, Cu, Fe, Mn, and Zn were evaluated in order to calculate the translocation and bioaccumulation factors, as well as toxicity of Cd and Pb. Cadmium caused severe symptoms of phytotoxicity in the plant's root and shoot, but no adverse effect was observed for Pb. Castor bean is an appropriate plant to be used as indicator plant for Cd and tolerante for Pb in contaminated solution and it can be potentially used for phytoremediation of contaminated areas.
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