title: Effects of intercropping of oat (Avena sativa L.) with white lupin (Lupinus albus L.) on the mobility of target elements for phytoremediation and phytomining in soil solution.
abstract: This study aims to investigate how intercropping of oat (Avena sativa L.) with white lupin (Lupinus albus L.) affects the mobile fractions of trace metals (Fe, Mn, Pb, Cd, Th, U, Sc, La, Nd, Ge) in soil solution. Oat and white lupin were cultivated in monocultures and mixed cultures with differing oat/white lupin ratios (11% and 33% lupin, respectively). Temporal variation of soil solution chemistry was compared with the mobilization of elements in the rhizosphere of white lupin and concentrations in plant tissues. Relative to the monocrops, intercropping of oat with 11% white lupin significantly increased the concentrations of Fe, Pb, Th, La and Nd in soil solution as well as the concentrations of Fe, Pb, Th, Sc, La and Nd in tissues of oat. Enhanced mobility of the mentioned elements corresponded to a depletion of elements in the rhizosphere soil of white lupin. In mixed cultures with 33% lupin, concentrations in soil solution only slightly increased. We conclude that intercropping with 11% white lupin might be a promising tool for phytoremediation and phytomining research enhancing mobility of essential trace metals as well as elements with relevance for phytoremediation (Pb, Th) and phytomining (La, Nd, Sc) in soil.
authors.affiliation: a Institute for Biosciences, Biology / Ecology Group, TU Bergakademie Freiberg , Freiberg , Germany.|b Interdisciplinary Environmental Centre, TU Bergakademie Freiberg , Freiberg , Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Wiche
authors.affiliation: b Interdisciplinary Environmental Centre, TU Bergakademie Freiberg , Freiberg , Germany.|c Department of Geodesy and Geoinformation , Vienna University of Technology , Vienna , Austria.
authors.forename: Balazs
authors.initials: B
authors.lastname: Székely
authors.affiliation: d Institute for Geology, Chair of Hydrogeology, TU Bergakademie Freiberg , Freiberg , Germany.
authors.forename: Nicolai-Alexeji
authors.initials: NA
authors.lastname: Kummer
authors.affiliation: a Institute for Biosciences, Biology / Ecology Group, TU Bergakademie Freiberg , Freiberg , Germany.
authors.forename: Christin
authors.initials: C
authors.lastname: Moschner
authors.affiliation: a Institute for Biosciences, Biology / Ecology Group, TU Bergakademie Freiberg , Freiberg , Germany.|b Interdisciplinary Environmental Centre, TU Bergakademie Freiberg , Freiberg , Germany.
authors.forename: Hermann
authors.initials: H
authors.lastname: Heilmeier
mesh_terms: D000383:Agriculture / Q000379:methods*; D018554:Avena / Q000378:metabolism*; D001673:Biodegradation, Environmental; D031297:Lupinus / Q000378:metabolism*; D008670:Metals / Q000378:metabolism*; D058441:Rhizosphere; D012989:Soil Pollutants / Q000378:metabolism*; D014131:Trace Elements / Q000378:metabolism
chemical_list: D008670:Metals; D012989:Soil Pollutants; D014131:Trace Elements
keywords: Intercropping; oat; rhizosphere; root exudates; trace elements; white lupin