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| Home > Articles > Published articles > Mercury speciation in selenium enriched wheat plants hydroponically exposed to mercury pollution |
(Universitat Autònoma de Barcelona. Departament de Química) (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia) (Universitat Autònoma de Barcelona. Departament de Química) (Laboratori de Llum del Sincrotró ALBA)
| Date: | 2023 |
| Abstract: | Mercury (Hg) pollution in agricultural soils and its potential pathway to the human food chain can pose a serious health concern. Understanding the pathway of Hg in plants and how the speciation may change upon interaction with other elements used for biofortification can be critical to assess the real implications for the final plant-based product. In that respect, selenium (Se) biofortification of crops grown in Se-poor soil regions is becoming a common practice to overcome Se deficient diets. Therefore, it is important to assess the interplay between these two elements since Se may form complexes with Hg reducing its bioavailability and toxicity. In this work, the speciation of Hg in wheat plants grown hydroponically under the presence of Hg (HgCl) and biofortified with Se (selenite, selenate, or a 1:1 mixture of both) has been investigated by X-ray absorption spectroscopy at the Hg L-edge. The main Hg species found in wheat grains was the highly toxic methylmercury. It was found that the Se-biofortification of wheat did not prevent, in general, the Hg translocation to grains. Only the 1:1 mixture treatment seemed to have an effect in reducing the levels of Hg and the presence of methylmercury in grains. |
| Grants: | European Commission 754397 European Commission 665919 Ministerio de Economía y Competitividad BES-2013-066639 Ministerio de Economía y Competitividad CTM2015-65414-C2-1-R |
| Note: | Altres ajuts: The authors acknowledge the ALBA facility for beamtime no. 2018113213, 2018123221, and 2019103977 at CLAESS beamline. |
| Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.  |
| Language: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Subject: | Environmental sciences ; Environmental chemistry ; Techniques and instrumentation |
| Published in: | Scientific reports, Vol. 13 (November 2023) , art. 21132, ISSN 2045-2322 |
