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Rare earth elements perturb root architecture and ion homeostasis in Arabidopsis thaliana.
Grosjean, Nicolas; Blaudez, Damien; Chalot, Michel; Flayac, Justine; Gross, Elisabeth M; Le Jean, Marie.
Afiliação
  • Grosjean N; Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France. Electronic address: ngrosjean@lbl.gov.
  • Blaudez D; Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France.
  • Chalot M; Université de Franche-Comté, CNRS, Chrono-Environnement, F-25000 Montbéliard, France; Université de Lorraine, F-54000 Nancy, France.
  • Flayac J; Université de Lorraine, CNRS, LIEC, F-57000 Metz, France.
  • Gross EM; Université de Lorraine, CNRS, LIEC, F-57000 Metz, France.
  • Le Jean M; Université de Lorraine, CNRS, LIEC, F-57000 Metz, France. Electronic address: marie.lejean@univ-lorraine.fr.
J Hazard Mater ; 468: 133701, 2024 Apr 15.
Article em En | MEDLINE | ID: mdl-38364576
ABSTRACT
Rare earth elements (REEs) are crucial elements for current high-technology and renewable energy advances. In addition to their increasing usage and their low recyclability leading to their release into the environment, REEs are also used as crop fertilizers. However, little is known regarding the cellular and molecular effects of REEs in plants, which is crucial for better risk assessment, crop safety and phytoremediation. Here, we analysed the ionome and transcriptomic response of Arabidopsis thaliana exposed to a light (lanthanum, La) and a heavy (ytterbium, Yb) REE. At the transcriptome level, we observed the contribution of ROS and auxin redistribution to the modified root architecture following REE exposure. We found indications for the perturbation of Fe homeostasis by REEs in both roots and leaves of Arabidopsis suggesting competition between REEs and Fe. Furthermore, we propose putative ways of entry of REEs inside cells through transporters of microelements. Finally, similar to REE accumulating species, organic acid homeostasis (e.g. malate and citrate) appears critical as a tolerance mechanism in response to REEs. By combining ionomics and transcriptomics, we elucidated essential patterns of REE uptake and toxicity response of Arabidopsis and provide new hypotheses for a better evaluation of the impact of REEs on plant homeostasis.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Arabidopsis / Metais Terras Raras Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Arabidopsis / Metais Terras Raras Idioma: En Ano de publicação: 2024 Tipo de documento: Article