Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes
Recent reports suggest that significant fractionation of stable metal isotopes occurs during biogeochemical cycling and that the uptake into higher plants is an important process. To test isotopic fractionation of copper (Cu) and zinc (Zn) during plant uptake and constrain its controls, we grew lettuce, tomato, rice and durum wheat under controlled conditions in nutrient solutions with variable metal speciation and iron (Fe) supply. The results show that the fractionation patterns of these two micronutrients are decoupled during the transport from nutrient solution to root. In roots, we found an enrichment of the heavier isotopes for Zn, in agreement with previous studies, but an enrichment of isotopically light Cu, suggesting a reduction of Cu(II) possibly at the surfaces of the root cell plasma membranes. This observation holds for both graminaceous and nongraminaceaous species and confirms that reduction is a predominant and ubiquitous mechanism for the acquisition of Cu into plants similar to the mechanism for the acquisition of iron (Fe) by the strategy I plant species. We propose two preliminary models of isotope fractionation processes of Cu and Zn in plants with different uptake strategies.
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dig-cirad-fr-5634422024-12-16T15:30:01Z http://agritrop.cirad.fr/563442/ http://agritrop.cirad.fr/563442/ Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes. Jouvin D., Weiss D.J., Mason T.F.M., Bravin Matthieu, Louvat P., Zhao F., Ferec F., Hinsinger Philippe, Benedetti Marc. 2012. Environmental Science and Technology, 46 (5) : 2652-2660.https://doi.org/10.1021/es202587m <https://doi.org/10.1021/es202587m> Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes Jouvin, D. Weiss, D.J. Mason, T.F.M. Bravin, Matthieu Louvat, P. Zhao, F. Ferec, F. Hinsinger, Philippe Benedetti, Marc eng 2012 ACS Environmental Science and Technology F61 - Physiologie végétale - Nutrition plante cuivre zinc absorption de substances nutritives fractionnement isotopique cycle dans les écosystèmes Lactuca sativa Solanum lycopersicum Oryza sativa Triticum turgidum isotope physiologie de la nutrition biologie moléculaire système racinaire modèle http://aims.fao.org/aos/agrovoc/c_5993 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_5273 http://aims.fao.org/aos/agrovoc/c_37632 http://aims.fao.org/aos/agrovoc/c_2056 http://aims.fao.org/aos/agrovoc/c_4149 http://aims.fao.org/aos/agrovoc/c_4475 http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_7958 http://aims.fao.org/aos/agrovoc/c_11852 http://aims.fao.org/aos/agrovoc/c_5275 http://aims.fao.org/aos/agrovoc/c_4891 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_4881 France http://aims.fao.org/aos/agrovoc/c_3081 Recent reports suggest that significant fractionation of stable metal isotopes occurs during biogeochemical cycling and that the uptake into higher plants is an important process. To test isotopic fractionation of copper (Cu) and zinc (Zn) during plant uptake and constrain its controls, we grew lettuce, tomato, rice and durum wheat under controlled conditions in nutrient solutions with variable metal speciation and iron (Fe) supply. The results show that the fractionation patterns of these two micronutrients are decoupled during the transport from nutrient solution to root. In roots, we found an enrichment of the heavier isotopes for Zn, in agreement with previous studies, but an enrichment of isotopically light Cu, suggesting a reduction of Cu(II) possibly at the surfaces of the root cell plasma membranes. This observation holds for both graminaceous and nongraminaceaous species and confirms that reduction is a predominant and ubiquitous mechanism for the acquisition of Cu into plants similar to the mechanism for the acquisition of iron (Fe) by the strategy I plant species. We propose two preliminary models of isotope fractionation processes of Cu and Zn in plants with different uptake strategies. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/563442/1/document_563442.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1021/es202587m 10.1021/es202587m info:eu-repo/semantics/altIdentifier/doi/10.1021/es202587m info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1021/es202587m |
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F61 - Physiologie végétale - Nutrition plante cuivre zinc absorption de substances nutritives fractionnement isotopique cycle dans les écosystèmes Lactuca sativa Solanum lycopersicum Oryza sativa Triticum turgidum isotope physiologie de la nutrition biologie moléculaire système racinaire modèle http://aims.fao.org/aos/agrovoc/c_5993 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_5273 http://aims.fao.org/aos/agrovoc/c_37632 http://aims.fao.org/aos/agrovoc/c_2056 http://aims.fao.org/aos/agrovoc/c_4149 http://aims.fao.org/aos/agrovoc/c_4475 http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_7958 http://aims.fao.org/aos/agrovoc/c_11852 http://aims.fao.org/aos/agrovoc/c_5275 http://aims.fao.org/aos/agrovoc/c_4891 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_3081 F61 - Physiologie végétale - Nutrition plante cuivre zinc absorption de substances nutritives fractionnement isotopique cycle dans les écosystèmes Lactuca sativa Solanum lycopersicum Oryza sativa Triticum turgidum isotope physiologie de la nutrition biologie moléculaire système racinaire modèle http://aims.fao.org/aos/agrovoc/c_5993 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_5273 http://aims.fao.org/aos/agrovoc/c_37632 http://aims.fao.org/aos/agrovoc/c_2056 http://aims.fao.org/aos/agrovoc/c_4149 http://aims.fao.org/aos/agrovoc/c_4475 http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_7958 http://aims.fao.org/aos/agrovoc/c_11852 http://aims.fao.org/aos/agrovoc/c_5275 http://aims.fao.org/aos/agrovoc/c_4891 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_3081 |
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F61 - Physiologie végétale - Nutrition plante cuivre zinc absorption de substances nutritives fractionnement isotopique cycle dans les écosystèmes Lactuca sativa Solanum lycopersicum Oryza sativa Triticum turgidum isotope physiologie de la nutrition biologie moléculaire système racinaire modèle http://aims.fao.org/aos/agrovoc/c_5993 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_5273 http://aims.fao.org/aos/agrovoc/c_37632 http://aims.fao.org/aos/agrovoc/c_2056 http://aims.fao.org/aos/agrovoc/c_4149 http://aims.fao.org/aos/agrovoc/c_4475 http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_7958 http://aims.fao.org/aos/agrovoc/c_11852 http://aims.fao.org/aos/agrovoc/c_5275 http://aims.fao.org/aos/agrovoc/c_4891 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_3081 F61 - Physiologie végétale - Nutrition plante cuivre zinc absorption de substances nutritives fractionnement isotopique cycle dans les écosystèmes Lactuca sativa Solanum lycopersicum Oryza sativa Triticum turgidum isotope physiologie de la nutrition biologie moléculaire système racinaire modèle http://aims.fao.org/aos/agrovoc/c_5993 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_5273 http://aims.fao.org/aos/agrovoc/c_37632 http://aims.fao.org/aos/agrovoc/c_2056 http://aims.fao.org/aos/agrovoc/c_4149 http://aims.fao.org/aos/agrovoc/c_4475 http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_7958 http://aims.fao.org/aos/agrovoc/c_11852 http://aims.fao.org/aos/agrovoc/c_5275 http://aims.fao.org/aos/agrovoc/c_4891 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_3081 Jouvin, D. Weiss, D.J. Mason, T.F.M. Bravin, Matthieu Louvat, P. Zhao, F. Ferec, F. Hinsinger, Philippe Benedetti, Marc Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
description |
Recent reports suggest that significant fractionation of stable metal isotopes occurs during biogeochemical cycling and that the uptake into higher plants is an important process. To test isotopic fractionation of copper (Cu) and zinc (Zn) during plant uptake and constrain its controls, we grew lettuce, tomato, rice and durum wheat under controlled conditions in nutrient solutions with variable metal speciation and iron (Fe) supply. The results show that the fractionation patterns of these two micronutrients are decoupled during the transport from nutrient solution to root. In roots, we found an enrichment of the heavier isotopes for Zn, in agreement with previous studies, but an enrichment of isotopically light Cu, suggesting a reduction of Cu(II) possibly at the surfaces of the root cell plasma membranes. This observation holds for both graminaceous and nongraminaceaous species and confirms that reduction is a predominant and ubiquitous mechanism for the acquisition of Cu into plants similar to the mechanism for the acquisition of iron (Fe) by the strategy I plant species. We propose two preliminary models of isotope fractionation processes of Cu and Zn in plants with different uptake strategies. |
format |
article |
topic_facet |
F61 - Physiologie végétale - Nutrition plante cuivre zinc absorption de substances nutritives fractionnement isotopique cycle dans les écosystèmes Lactuca sativa Solanum lycopersicum Oryza sativa Triticum turgidum isotope physiologie de la nutrition biologie moléculaire système racinaire modèle http://aims.fao.org/aos/agrovoc/c_5993 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_5273 http://aims.fao.org/aos/agrovoc/c_37632 http://aims.fao.org/aos/agrovoc/c_2056 http://aims.fao.org/aos/agrovoc/c_4149 http://aims.fao.org/aos/agrovoc/c_4475 http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_7958 http://aims.fao.org/aos/agrovoc/c_11852 http://aims.fao.org/aos/agrovoc/c_5275 http://aims.fao.org/aos/agrovoc/c_4891 http://aims.fao.org/aos/agrovoc/c_16034 http://aims.fao.org/aos/agrovoc/c_4881 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Jouvin, D. Weiss, D.J. Mason, T.F.M. Bravin, Matthieu Louvat, P. Zhao, F. Ferec, F. Hinsinger, Philippe Benedetti, Marc |
author_facet |
Jouvin, D. Weiss, D.J. Mason, T.F.M. Bravin, Matthieu Louvat, P. Zhao, F. Ferec, F. Hinsinger, Philippe Benedetti, Marc |
author_sort |
Jouvin, D. |
title |
Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
title_short |
Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
title_full |
Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
title_fullStr |
Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
title_full_unstemmed |
Stable isotopes of Cu and Zn in higher plants: evidence for Cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
title_sort |
stable isotopes of cu and zn in higher plants: evidence for cu reduction at the root surface and two conceptual models for isotopic fractionation processes |
publisher |
ACS |
url |
http://agritrop.cirad.fr/563442/ http://agritrop.cirad.fr/563442/1/document_563442.pdf |
work_keys_str_mv |
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