Copper availability and bioavailability are controlled by rhizosphere pH in rape grown in an acidic Cu-contaminated soil

We evaluated how root-induced changes in rhizosphere pH varied and interacted with Cu availability and bioavailability in an acidic soil. Rape was grown on a Cu-contaminated acidic soil, which had been limed at 10 rates. Soil Cu bioavailability was not influenced by liming. However, liming significa...

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Veröffentlicht in:	Environmental pollution (1987) 2009-12, Vol.157 (12), p.3363-3369
Hauptverfasser:	Chaignon, Valérie, Quesnoit, Marie, Hinsinger, Philippe
Format:	Artikel
Sprache:	eng
Schlagworte:	acid soils Acids - analysis Animal, plant and microbial ecology Applied ecology bioaccumulation bioavailability Biological and medical sciences Biological Availability Brassica napus Brassica napus - growth & development Brassica napus - metabolism Cell wall Copper Copper - metabolism Ecotoxicology, biological effects of pollution Environment and Society Environmental Sciences Fundamental and applied biological sciences. Psychology General aspects Hydrogen-Ion Concentration Plant Roots - growth & development Plant Roots - metabolism polluted soils Proton buffering capacity Proton flux Rhizosphere Soil - chemistry soil pH Soil Pollutants - metabolism soil pollution Terrestrial environment, soil, air
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Zusammenfassung:	We evaluated how root-induced changes in rhizosphere pH varied and interacted with Cu availability and bioavailability in an acidic soil. Rape was grown on a Cu-contaminated acidic soil, which had been limed at 10 rates. Soil Cu bioavailability was not influenced by liming. However, liming significantly decreased CaCl 2–extracted Cu for pH between 3.7 and 5.1. Little effect was found for pH above 5.1. For soil pH
ISSN:	0269-7491 1873-6424
DOI:	10.1016/j.envpol.2009.06.032