Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil
We aimed at determining the major physical-chemical processes that drive arsenic (As) dynamic in the rhizosphere of four species (Holcus lanatus, Dittrichia viscosa, Lotus corniculatus, Plantago lanceolata) tested for phytostabilization. Experiments were performed with an alkaline soil naturally rich in As. Composition of the soil solution of planted and unplanted pots was monitored every 15 days for 90 days, with a focus on the evolution of As concentrations in solution and in the non-specifically bound (i.e. easily exchangeable) fraction. The four species similarly increased As concentration in solution, but decreased As concentration in the non-specifically bound fraction. The major part (60%) of As desorbed from the non-specifically bound fraction in planted pots was likely redistributed on the less available fractions of As on the solid phase. A second part (35%) of desorbed As was taken up by plants. The minor part (5%) of desorbed As supplied As increase in solution. To conclude, plants induced a substantial redistribution of As on the less available fractions in the rhizosphere, as expected in phytostabilization strategies. Plants however concomitantly increased As concentration in the rhizosphere solution which may contribute to As transfer through plant uptake and leaching.
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dig-cirad-fr-5788022024-01-28T23:09:17Z http://agritrop.cirad.fr/578802/ http://agritrop.cirad.fr/578802/ Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil. Obeidy Carole, Bravin Matthieu, Bouchardon Jean-Luc, Conord Cyrille, Moutte Jacques, Guy Bernard, Faure Olivier. 2016. Ecotoxicology and Environmental Safety, 126 : 23-29.https://doi.org/10.1016/j.ecoenv.2015.12.010 <https://doi.org/10.1016/j.ecoenv.2015.12.010> Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil Obeidy, Carole Bravin, Matthieu Bouchardon, Jean-Luc Conord, Cyrille Moutte, Jacques Guy, Bernard Faure, Olivier eng 2016 Ecotoxicology and Environmental Safety P33 - Chimie et physique du sol P35 - Fertilité du sol F60 - Physiologie et biochimie végétale rhizosphère propriété physicochimique du sol arsenic transport des substances nutritives lessivage du sol Holcus lanatus Lotus corniculatus Plantago lanceolata alcalinité enracinement http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_629 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_15591 http://aims.fao.org/aos/agrovoc/c_37128 http://aims.fao.org/aos/agrovoc/c_4443 http://aims.fao.org/aos/agrovoc/c_34743 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_6649 France http://aims.fao.org/aos/agrovoc/c_3081 We aimed at determining the major physical-chemical processes that drive arsenic (As) dynamic in the rhizosphere of four species (Holcus lanatus, Dittrichia viscosa, Lotus corniculatus, Plantago lanceolata) tested for phytostabilization. Experiments were performed with an alkaline soil naturally rich in As. Composition of the soil solution of planted and unplanted pots was monitored every 15 days for 90 days, with a focus on the evolution of As concentrations in solution and in the non-specifically bound (i.e. easily exchangeable) fraction. The four species similarly increased As concentration in solution, but decreased As concentration in the non-specifically bound fraction. The major part (60%) of As desorbed from the non-specifically bound fraction in planted pots was likely redistributed on the less available fractions of As on the solid phase. A second part (35%) of desorbed As was taken up by plants. The minor part (5%) of desorbed As supplied As increase in solution. To conclude, plants induced a substantial redistribution of As on the less available fractions in the rhizosphere, as expected in phytostabilization strategies. Plants however concomitantly increased As concentration in the rhizosphere solution which may contribute to As transfer through plant uptake and leaching. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/578802/1/EES_Obeidy_As%20Rhizosphere%20Alkaline%20Soil.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.ecoenv.2015.12.010 10.1016/j.ecoenv.2015.12.010 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecoenv.2015.12.010 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.ecoenv.2015.12.010 |
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P33 - Chimie et physique du sol P35 - Fertilité du sol F60 - Physiologie et biochimie végétale rhizosphère propriété physicochimique du sol arsenic transport des substances nutritives lessivage du sol Holcus lanatus Lotus corniculatus Plantago lanceolata alcalinité enracinement http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_629 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_15591 http://aims.fao.org/aos/agrovoc/c_37128 http://aims.fao.org/aos/agrovoc/c_4443 http://aims.fao.org/aos/agrovoc/c_34743 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_3081 P33 - Chimie et physique du sol P35 - Fertilité du sol F60 - Physiologie et biochimie végétale rhizosphère propriété physicochimique du sol arsenic transport des substances nutritives lessivage du sol Holcus lanatus Lotus corniculatus Plantago lanceolata alcalinité enracinement http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_629 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_15591 http://aims.fao.org/aos/agrovoc/c_37128 http://aims.fao.org/aos/agrovoc/c_4443 http://aims.fao.org/aos/agrovoc/c_34743 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_3081 |
spellingShingle |
P33 - Chimie et physique du sol P35 - Fertilité du sol F60 - Physiologie et biochimie végétale rhizosphère propriété physicochimique du sol arsenic transport des substances nutritives lessivage du sol Holcus lanatus Lotus corniculatus Plantago lanceolata alcalinité enracinement http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_629 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_15591 http://aims.fao.org/aos/agrovoc/c_37128 http://aims.fao.org/aos/agrovoc/c_4443 http://aims.fao.org/aos/agrovoc/c_34743 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_3081 P33 - Chimie et physique du sol P35 - Fertilité du sol F60 - Physiologie et biochimie végétale rhizosphère propriété physicochimique du sol arsenic transport des substances nutritives lessivage du sol Holcus lanatus Lotus corniculatus Plantago lanceolata alcalinité enracinement http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_629 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_15591 http://aims.fao.org/aos/agrovoc/c_37128 http://aims.fao.org/aos/agrovoc/c_4443 http://aims.fao.org/aos/agrovoc/c_34743 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_3081 Obeidy, Carole Bravin, Matthieu Bouchardon, Jean-Luc Conord, Cyrille Moutte, Jacques Guy, Bernard Faure, Olivier Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
description |
We aimed at determining the major physical-chemical processes that drive arsenic (As) dynamic in the rhizosphere of four species (Holcus lanatus, Dittrichia viscosa, Lotus corniculatus, Plantago lanceolata) tested for phytostabilization. Experiments were performed with an alkaline soil naturally rich in As. Composition of the soil solution of planted and unplanted pots was monitored every 15 days for 90 days, with a focus on the evolution of As concentrations in solution and in the non-specifically bound (i.e. easily exchangeable) fraction. The four species similarly increased As concentration in solution, but decreased As concentration in the non-specifically bound fraction. The major part (60%) of As desorbed from the non-specifically bound fraction in planted pots was likely redistributed on the less available fractions of As on the solid phase. A second part (35%) of desorbed As was taken up by plants. The minor part (5%) of desorbed As supplied As increase in solution. To conclude, plants induced a substantial redistribution of As on the less available fractions in the rhizosphere, as expected in phytostabilization strategies. Plants however concomitantly increased As concentration in the rhizosphere solution which may contribute to As transfer through plant uptake and leaching. |
format |
article |
topic_facet |
P33 - Chimie et physique du sol P35 - Fertilité du sol F60 - Physiologie et biochimie végétale rhizosphère propriété physicochimique du sol arsenic transport des substances nutritives lessivage du sol Holcus lanatus Lotus corniculatus Plantago lanceolata alcalinité enracinement http://aims.fao.org/aos/agrovoc/c_6569 http://aims.fao.org/aos/agrovoc/c_7182 http://aims.fao.org/aos/agrovoc/c_629 http://aims.fao.org/aos/agrovoc/c_5272 http://aims.fao.org/aos/agrovoc/c_15591 http://aims.fao.org/aos/agrovoc/c_37128 http://aims.fao.org/aos/agrovoc/c_4443 http://aims.fao.org/aos/agrovoc/c_34743 http://aims.fao.org/aos/agrovoc/c_8721 http://aims.fao.org/aos/agrovoc/c_6649 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Obeidy, Carole Bravin, Matthieu Bouchardon, Jean-Luc Conord, Cyrille Moutte, Jacques Guy, Bernard Faure, Olivier |
author_facet |
Obeidy, Carole Bravin, Matthieu Bouchardon, Jean-Luc Conord, Cyrille Moutte, Jacques Guy, Bernard Faure, Olivier |
author_sort |
Obeidy, Carole |
title |
Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
title_short |
Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
title_full |
Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
title_fullStr |
Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
title_full_unstemmed |
Plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
title_sort |
plants increase arsenic in solution but decrease the non-specifically bound fraction in the rhizosphere of an alkaline, naturally rich soil |
url |
http://agritrop.cirad.fr/578802/ http://agritrop.cirad.fr/578802/1/EES_Obeidy_As%20Rhizosphere%20Alkaline%20Soil.pdf |
work_keys_str_mv |
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