Metal Solubility and Speciation in the Rhizosphere of Lupinus albus Cluster Roots

Dessureault‐Rompré, Jacynthe; Nowack, Bernd; Schulin, Rainer; Tercier‐Waeber, Mary‐Lou; Luster, J.

doi:10.1021/es800167g

Cited by 48 publications

(33 citation statements)

References 40 publications

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“…The different chemical and biological conditions of the rhizosphere with respect to the bulk soil can change metal fractions and therefore bioavailability of metals (Dessureault-Rompre et al, 2008;Tao et al, 2003). Moreover, low-molecular-weight organic acids produced by plant roots exudation and bacterial metabolism are involved in many processes operating in the rhizosphere, including nutrient acquisition, metal detoxification, and alleviation of anaerobic stress in roots (Jones, 1998 speciation and transportation of Zn in the rhizosphere soil.…”

Section: Different Mathematical Modelsmentioning

confidence: 99%

Zinc desorption kinetics in wheat (Triticum Aestivum L.) rhizosphere in some sewage sludge amended soils

Motaghian

Hosseinpur

2013

J. Soil Sci. Plant Nutr.

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The objectives of this study were to determine Zn desorption characteristics and the correlation of these parameters with Zn extracted by DTPA-TEA method in bulk and rhizosphere amended soils with sewage sludge under greenhouse conditions by using a rhizobox. For amended soils 10 g of sewage sludge was added to 1 kg of 10 soil samples. The kinetics of Zn desorption in bulk and rhizosphere was determined by successive extraction with DTPA-TEA in a period of 1 to 504 h at 25±1 0 C. The results showed that Zn extracted using successive extraction in the rhizosphere were significantly (p<0.01) higher than in the bulk amended soils. The best model for describing extraction data for bulk and rhizosphere soils was the power function equation. The results indicated that Zn desorption rate in the wheat rhizosphere soils more than bulk soils. The results showed that significant correlation (p<0.05) between Zn desorption characteristics and DTPA-TEA-Zn were found in the bulk and rhizosphere soils. The results of this research revealed that Zn desorption characteristics that are help to estimate the Zn supplying power of soils in the wheat rhizosphere, are quite different than bulk amended with sewage sludge.

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Section: Different Mathematical Modelsmentioning

confidence: 99%

Zinc desorption kinetics in wheat (Triticum Aestivum L.) rhizosphere in some sewage sludge amended soils

Motaghian

Hosseinpur

2013

J. Soil Sci. Plant Nutr.

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“…Citrate concentrations can reach mM levels in the rhizosphere solution of cluster roots (Dessureault-Rompré et al 2008). Gardner et al (1982) showed that white lupin grown on an alkaline soil also responds to iron stress by the development of a higher proportion of cluster roots and an increase in proton and reducing and chelating compound production.…”

Section: Introductionmentioning

confidence: 99%

“…One is the use of rhizoboxes in combination with micro-suction cups (Göttlein et al 1996) which were already used with different plants and soils (Wenzel et al 2001;Dessureault-Rompré et al 2008;Gao et al 2009). In the present study we determined in situ Zn and P mobilization by citrate in the rhizosphere of calcareous soils and linked potential Zn and P mobilization to plant uptake and the results of a nutrient solution and a soil extraction experiment.…”

Section: Introductionmentioning

confidence: 99%

Bioavailability of zinc and phosphorus in calcareous soils as affected by citrate exudation

2012

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Aims Zinc (Zn) and phosphorus (P) deficiency often occurs at the same time and limits crop production in many soils. It has been suggested that citrate root exudation is a response of plants to both deficiencies. We used white lupin (Lupinus albus L.) as a model plant to clarify if citrate exuded by roots could increase the bioavailability of Zn and P in calcareous soils. Methods White lupin was grown in nutrient solution and in two calcareous soils in a rhizobox. Rhizosphere soil solution was sampled to determine citrate, metals and P. Based on the measured citrate concentrations, a soil extraction experiment with citrate as extractant was done. Results Absence of Zn triggered neither cluster root formation nor citrate exudation of white lupin grown in nutrient solution, whereas low P supply did. The maximum citrate concentration (∼1.5 mM) found in the cluster rhizosphere soil solution of one soil mobilized P, but not Zn. In the other soil the highest citrate concentration (∼0.5 mM) mobilized both elements. Conclusions White lupin does not respond to low Zn bioavailability by increasing citrate exudation. Such a response was observed at low P supply only. Whether Zn and P can be mobilized by citrate is soil-dependent and the possible controlling mechanisms are discussed.

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“…5). Many of them can be accumulated and eventually concentrated in the edible parts of crops, depending on their speciation, solubility and bioavailability and by the ability of a crop to take up the essential and non-essential elements and translocate them to the target organs (Burgos et al 2008;Clemente et al 2008;Dessureault-Rompre et al 2008;Almendras et al 2009;Quartacci et al 2009). Metals can be absorbed by plants, wildlife and people through the food they eat.…”

Section: Soil Contamination By As Co Cr and Pb In An Alpine Territomentioning

confidence: 99%

Is phytoremediation a sustainable and reliable approach to clean-up contaminated water and soil in Alpine areas?

Schwitzguébel¹,

Comino

Plata

et al. 2011

Environ Sci Pollut Res

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Background, aim and scope Phytoremediation does exploit natural plant physiological processes and can be used to decontaminate agricultural soils, industrial sites, brownfields, sediments and water containing inorganic and organic pollutants or to improve food chain safety by phytostabilisation of toxic elements. It is a low-cost and environment friendly technology targetting removal, degradation or immobilisation of contaminants. The aim of the present review is to highlight some recent advances in phytoremediation in the Alpine context. Main featuresCase studies are presented where phytoremediation has been or can be successfully applied in Alpine areas to: (1) clean-up industrial wastewater containing sulphonated aromatic xenobiotics released by dye and textile industries; (2) remediate agricultural soils polluted by petroleum hydrocarbons; (3) improve food chain safety in soils contaminated with toxic trace elements (As, Co, Cr and Pb); and (4) treat soils impacted by modern agricultural activities with a special emphasis on phosphate fertilisation. Conclusions, recommendations and perspectives Worlwide, including in Alpine areas, the controlled use of appropriate plants is destined to play a major role for remediation and restoration of polluted and degraded ecosystems, monitoring and assessment of environmental quality, prevention of landscape degradation and immobilisation of trace elements. Phytotechnologies do already offer promising approaches towards environmental remediation, human health, food safety and sustainable development for the 21st century in Alpine areas and elsewhere all over the world.

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Metal Solubility and Speciation in the Rhizosphere of Lupinus albus Cluster Roots

Cited by 48 publications

References 40 publications

Zinc desorption kinetics in wheat (Triticum Aestivum L.) rhizosphere in some sewage sludge amended soils

Zinc desorption kinetics in wheat (Triticum Aestivum L.) rhizosphere in some sewage sludge amended soils

Bioavailability of zinc and phosphorus in calcareous soils as affected by citrate exudation

Is phytoremediation a sustainable and reliable approach to clean-up contaminated water and soil in Alpine areas?

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