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Minerva Biotecnologica 2001 March;13(1):33-5

Copyright © 2001 EDIZIONI MINERVA MEDICA

lingua: Inglese

Phytoremediation of a metal contaminated area in Southern Spain

Alcantara E. 1, Barra R. 4, Benlloch M. 2, Ginhas A. 2, Jorrin J. V. 3, Lopez J. A. 4, Lora A. 4, Ojeda M. A. 2, Puig M. 5, Pujadas A. 4, Requejo R. 3, Romera J. 1, Ruso J. 3, Sancho E. D. 5, Shilev S. I. 5, Tena M. 3

1 Department of Plant Physiology, EMIR-UCO (Multidisciplinary Research Project on Phytoremediation - University of Cordoba), Agronomy ad Forest Science High Technical School, University of Cordoba, Cordoba, Spain; 2 Department of Agronomy, EMIR-UCO (Multidisciplinary Research Project on Phytoremediation - University of Cordoba), Agronomy ad Forest Science High Technical School, University of Cordoba, Cordoba, Spain; 3 Department of Biochemistry and Molecular Biology, EMIR-UCO (Multidisciplinary Research Project on Phytoremediation - University of Cordoba), Agronomy ad Forest Science High Technical School, University of Cordoba, Cordoba, Spain; 4 Department of Botany, EMIR-UCO (Multidisciplinary Research Project on Phytoremediation - University of Cordoba), Agronomy ad Forest Science High Technical School, University of Cordoba, Cordoba, Spain; 5 Department of Microbiology, EMIR-UCO (Multidisciplinary Research Project on Phytoremediation - University of Cordoba), Agronomy ad Forest Science High Technical School, University of Cordoba, Cordoba, Spain


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The ­EMIR-UCO is a mul­ti­dis­ci­pli­nary ­group includ­ing agron­o­mists, bot­a­nists, ­soil sci­en­tists, ­plant phys­iol­o­gists, micro­bi­ol­o­gists and bio­chem­ists at the Agronomy and Forest Science High Technical School, University of Córdoba, ­involved ­since 1998 in ­research pro­jects direct­ed at devel­oping and eval­u­ating phy­tor­e­me­di­a­tion tech­niques for met­al con­tam­i­nat­ed ­soils, initial­ly relat­ed to the mul­ti­com­po­nent met­al con­tam­i­na­tion ­caused by the Aznalcollar (Southern Spain) tox­ic ­spill. The main objec­tives and relat­ed activ­ities are to use ­plant and micro­or­gan­isms as bio­in­di­ca­tors of tox­ic met­al con­tam­i­na­tion, to car­ry out botan­i­cal sur­veys direct­ed at iden­ti­fying and clas­si­fying autoc­to­nous ­plant spe­cies grow­ing in heav­i­ly con­tam­i­nat­ed are­as, eval­u­ating, by ­using ­field and green­house experi­ments, the tol­er­ance to tox­ic met­als in ­crops and ­wild spe­cies, devel­oping ­either con­tin­u­ous and ­induced phy­toex­trac­tion pro­to­cols adapt­ed to ­both hyper­ac­cu­mu­la­tors and ­high bio­mass pro­duc­er ­plants, iso­lating and char­ac­ter­izing riz­os­pher­ic bac­te­ria and ­their ­effect on ­plant ­growth, tol­er­ance to tox­ic met­als and ­their abil­ity to accu­mu­late ­them, and char­ac­ter­izing ­plant respons­es to tox­ic met­als at the molec­u­lar lev­el, ­with spe­cial empha­sis on met­al adsorp­tion, trans­lo­ca­tion and accu­mu­la­tion, and syn­the­sis of ­stress metab­olites (i.e. sec­on­dary metab­olites, anti­ox­i­dants). Plant mod­el ­systems ­include ­crops (sun­flow­er, ­maize, chick­pea, this­tle) and her­ba­ceous ­wild spe­cies (Nerium olean­der, Canna sati­va, ­wild sun­flow­er rel­a­tives, etc.). Most rel­e­vants ­results, so far ­obtained, ­will be ­described. This mul­ti­dis­ci­pli­nary ­approach has proved spe­cial­ly use­ful in ­building a great­er under­stand­ing of the ­many and var­ied pro­cess­es ­involved in phy­tore­me­di­a­tion tech­niques.

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