title: Hydroponic screening of poplar for trace element tolerance and accumulation.
abstract: 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 microM Cd, Cu, Ni, and Pb, and 200 microM 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.
authors.affiliation: UMR INRA/UHP 1136 "Tree-microbe Interactions ", Faculty of Sciences and Technology, Nancy-University, Vandoeuvre-les-Nancy, France.
authors.forename: Aude
authors.initials: A
authors.lastname: Migeon
authors.forename: Pierre
authors.initials: P
authors.lastname: Richaud
authors.forename: Frédéric
authors.initials: F
authors.lastname: Guinet
authors.forename: Damien
authors.initials: D
authors.lastname: Blaudez
authors.forename: Michel
authors.initials: M
authors.lastname: Chalot
mesh_terms: D018533:Biomass; D002104:Cadmium / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity; D003300:Copper / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D004784:Environmental Monitoring / Q000379:methods; D006863:Hydrogen-Ion Concentration; D018527:Hydroponics; D009532:Nickel / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D035261:Plant Components, Aerial / Q000187:drug effects / Q000378:metabolism; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000378:metabolism; D032107:Populus / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity; D014131:Trace Elements / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity; D015032:Zinc / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity
chemical_list: D012989:Soil Pollutants; D014131:Trace Elements; D002104:Cadmium; D003300:Copper; D009532:Nickel; D015032:Zinc