Using the nutrient film technique, we screened 21 clones of poplar for growth in the presence of a mix of trace elements (TE) and for TE accumulation capacities. Poplar cuttings were exposed for four weeks to a multipollution solution consisting in 10 μM Cd, Cu, Ni, and Pb, and 200
μM Zn. Plant biomass and TE accumulation patterns in leaves varied greatly between clones. The highest Cd and Zn concentrations in leaves were detected in P. trichocarpa and P. trichocarpa hybrids, with the clone Skado (P. trichocarpa x P. maximowiczii) accumulating
up to 108 mg Cd kg−1 DW and 1510 mg Zn kg−1 DW when exposed to a multipollution context. Our data also confirm the importance of pH and multipollution, as these factors greatly affect TE accumulation in above ground biomass. The NFT technique applied here
to a large range of poplar clones also revealed the potential of the Rochester, AFO662 and AFO678 poplar clones for use in phytostabilization programs and bioenergy production, where production of less contaminated above ground biomass is suitable.
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Document Type: Research Article
UMR INRA/UHP 1136 “Tree-microbe Interactions”, Faculty of Sciences and Technology,Nancy-University, Vandoeuvre-les-Nancy, France
CEA, DSV, iBEB, Laboratoire des Echanges Membranaires et Signalisation, St Paul les Durance, France
Publication date: April 1, 2012