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The impact of microbial activity and trace metal speciation in the rhizosphere on metal uptake by plants

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dc.contributor.author Sauve, Sebastien
dc.contributor.author Hendershot, William
dc.contributor.author Macfie, Sheila
dc.contributor.author Berkelaar, Edward
dc.contributor.author Courchesne, Francois
dc.date.accessioned 2010-04-30T13:55:23Z
dc.date.available 2010-04-30T13:55:23Z
dc.date.issued 2010-04-30T13:55:23Z
dc.identifier.uri http://hdl.handle.net/10214/2167
dc.description S4. Prinicpal investigator: Francois Courchesne en
dc.description.abstract Understanding the processes that regulate the solubility of trace metals in soils, their uptake by plants and their transport towards waters bodies is a key societal challenge because this knowledge is vital to insure the sustained development of terrestrial and aquatic ecosystems and to prevent health hazards to humans. Due to its proximity to a site of elemental uptake by plants, the rhizosphere represents a critical component of all soil-plant systems and recent studies indicate that the extent of the functional role of the rhizosphere on the biogeochemical cycling of metals is much larger than the volume fraction it occupies in soils. In this context, our primary goal is to investigate the functional relationships existing trace metal speciation in the rhizosphere, microbial activity and the uptake of metal by edible plants. The scientific approach is based on a combination of field work, growth-chamber experiments and microscale investigations aimed at: 1) contrasting the microbiological properties and chemical speciation of metals between the rhizosphere and the bulk components of soils, 2) establishing the processes linking microbial activity to the liquidphase speciation of trace metals and 3)quantifying the interactions between metal speciation in soils and their accumulation in edible plants. These relationships will be examined for selected edible plants and a range of urban soils by measuring the speciation of dissolved metals in soils, the microbial biomass and activity, and the solid phase fractionation of metals using Synchroton-based techniques. en
dc.description.sponsorship Metals in the Human Environment Strategic Network en
dc.language.iso en en
dc.relation.ispartofseries S;4
dc.subject Edible plants en
dc.subject Soils en
dc.subject Rhizosphere en
dc.subject Zn en
dc.subject Pb en
dc.subject Ni en
dc.subject Cu en
dc.subject Cd en
dc.subject Trace metals en
dc.subject Microbial activity en
dc.title The impact of microbial activity and trace metal speciation in the rhizosphere on metal uptake by plants en
dc.type Other en


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