title: Different behaviours in phytoremediation capacity of two heavy metal tolerant poplar clones in relation to iron and other trace elements.
abstract: Plant biodiversity and intra-population genetic variability have not yet been properly exploited in the framework of phytoremediation and soil reclamation. For this reason, iron and other metal accumulation capacity of two Cu and Zn tolerant poplar clones, namely AL22 (Populus alba L.) and N12 (Populus nigra L.), was investigated in a pot experiment. Cuttings of the two clones were planted in iron rich soil collected from an urban-industrial area. Concentrations of Cd, Cu, Fe, Pb and Zn were analysed in leaves (at different times), as well as in stems and in roots (at the end of the experiment), both in control plants and in plants grown on a soil whose Fe availability was artificially enhanced. Results showed that Cd and Zn were preferentially accumulated in leaves, whereas Cu, Fe and Pb were mainly accumulated in roots. The main differences in metal accumulation between clones were related to Cd (about tenfold higher concentrations in N12) and Cu (higher concentrations in AL22). Once soil Fe availability was enhanced, the uptake and accumulation of all metals declined, with the exception of Fe at the first sampling time in AL22 leaves. The different behaviour of the two poplar clones suggests that a thoughtful choice should be made for their use in relation to soil heavy metal remediation.
authors.affiliation: Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Baldantoni
authors.affiliation: Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
authors.forename: Angela
authors.initials: A
authors.lastname: Cicatelli
authors.affiliation: Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Bellino
authors.affiliation: Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy. Electronic address: scastiglione@unisa.it.
authors.forename: Stefano
authors.initials: S
authors.lastname: Castiglione
mesh_terms: D001673:Biodegradation, Environmental; D006801:Humans; D007501:Iron / Q000378:metabolism*; D019216:Metals, Heavy / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D032107:Populus / Q000235:genetics / Q000378:metabolism*; D012989:Soil Pollutants / Q000378:metabolism*; D014131:Trace Elements / Q000378:metabolism*
chemical_list: D019216:Metals, Heavy; D012989:Soil Pollutants; D014131:Trace Elements; D007501:Iron
keywords: Heavy metals; Iron; Phytoremediation; Populus alba L. (AL22); Populus nigra L. (N12)