Rare earth elements perturb root architecture and ion homeostasis in Arabidopsis thaliana - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Journal of Hazardous Materials Année : 2024

Rare earth elements perturb root architecture and ion homeostasis in Arabidopsis thaliana

Résumé

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.
Fichier non déposé

Dates et versions

hal-04461157 , version 1 (16-02-2024)

Identifiants

Citer

Nicolas Grosjean, Damien Blaudez, Michel Chalot, Justine Flayac, Elisabeth Gross, et al.. Rare earth elements perturb root architecture and ion homeostasis in Arabidopsis thaliana. Journal of Hazardous Materials, 2024, LIEC-UL, 468, pp.133701. ⟨10.1016/j.jhazmat.2024.133701⟩. ⟨hal-04461157⟩
19 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More