1. Copper Oxide Nanoparticle Foliar Uptake, Phytotoxicity, and Consequences for Sustainable Urban Agriculture
- Author
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Sophie Sobanska, Antoine Pierart, Camille Dumat, Tiantian Xiong, Hervé Vezin, Muhammad Shahid, Eva Schreck, V. Dappe, School of Life Science, South China Normal University - Guangzhou, INPT ENSAT, Université Fédérale Toulouse Midi-Pyrénées, Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J), Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 (LASIRE), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Centrale Lille Institut (CLIL), Géosciences Environnement Toulouse (GET), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), COMSATS Institute of Information Technology [Islamabad] (CIIT), Environmental Science and Biochemistry Ecotoxicology Laboratory, University of Castilla-La Mancha (UCLM), Centre National de la Recherche Scientifique (CNRS)-Centrale Lille Institut (CLIL)-Institut de Chimie du CNRS (INC)-Université de Lille, École nationale supérieure agronomique de Toulouse (ENSAT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), and Universidad de Castilla-La Mancha = University of Castilla-La Mancha (UCLM)
- Subjects
0106 biological sciences ,brassica oleracea var. capitata ,Biomass ,Lactuca ,Electron probe microanalysis ,Vegetable ,010501 environmental sciences ,Energy dispersive x ray spectroscopy ,01 natural sciences ,Plants (botany) ,Nanoparticle ,copper oxides ,Electron spin resonance ,Vegetables ,11. Sustainability ,Gas exchange ,Photosynthesis ,Paramagnetic resonance ,Water content ,Biotransformation ,agriculture ,2. Zero hunger ,biology ,Chemistry ,copper oxide nanoparticles ,Copper toxicity ,Oxides ,Energy dispersive x ray microanalysis ,Lettuce ,Leaf tissue ,Urban agriculture ,Health risks ,[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry ,Transfer rates ,Magnetic resonance ,Cabbage ,Health risk ,Phytotoxicity ,Scanning electron microscopy ,Human ,Fertilizer application ,Stomatal conductance ,Histology ,Regulation process ,Metal nanoparticles ,Speciation (chemistry) ,Translocation ,Article ,Dry weight ,medicine ,Environmental Chemistry ,Urban agricultures ,alternative agriculture ,0105 earth and related environmental sciences ,Tissue ,Potential health risks ,Oxide ,Urban area ,Metal-containing nanoparticles ,General Chemistry ,medicine.disease ,biology.organism_classification ,Metabolism ,Transfer process ,Agronomy ,Nanoparticles ,Copper ,Metal nanoparticle ,copper oxide nanoparticle ,010606 plant biology & botany - Abstract
International audience; Throughout the world, urban agriculture supplies fresh local vegetables to city populations. However, the increasing anthropogenic uses of metal-containing nanoparticles (NPs) such as CuO-NPs in urban areas may contaminate vegetables through foliar uptake. This study focused on the CuO-NP transfer processes in leafy edible vegetables (i.e., lettuce and cabbage) to assess their potential phytotoxicity. Vegetables were exposed via leaves for 5, 10, or 15 days to various concentrations of CuO-NPs (0, 10, or 250 mg per plant). Biomass and gas exchange values were determined in relation to the Cu uptake rate, localization, and Cu speciation within the plant tissues. High foliar Cu uptake occurred after exposure for 15 days for lettuce [3773 mg (kg of dry weight)-1] and cabbage [4448 mg (kg of dry weight)-1], along with (i) decreased plant weight, net photosynthesis level, and water content and (ii) necrotic Cu-rich areas near deformed stomata containing CuO-NPs observed by scanning electron microscopy and energy dispersive X-ray microanalysis. Analysis of the CuO-NP transfer rate (7.8-242 μg day-1), translocation of Cu from leaves to roots and Cu speciation biotransformation in leaf tissues using electron paramagnetic resonance, suggests the involvement of plant Cu regulation processes. Finally, a potential health risk associated with consumption of vegetables contaminated with CuO-NPs was highlighted.
- Published
- 2017