Miscanthus × giganteus demonstrated good phytostabilization potentials by decreasing the trace elements (T.E.s) mobility and enhancing the degraded soil quality. Nevertheless, most of the published work was performed under controlled conditions in ex situ pot experiments and/or with soils being spiked. Hence, data about the plant's tolerance to increased T.E. concentrations in real conditions is still scarce and requires further investigation. For this sake, a field experiment was established by cultivating miscanthus plants in three different agricultural plots representing gradient trace element (Cd, Pb and Zn) concentrations. Another uncontaminated plot was also introduced. Results showed that T.E. concentrations in the leaves were tolerable to the plant. In addition, no variations were detected between the miscanthus cultivated in the contaminated and uncontaminated soils at the level of antioxidant enzymatic activities (ascorbate peroxidase and superoxide dismutase), photosynthetic pigments (chlorophyll a and b and carotenoids), and secondary metabolites (phenolic compounds, flavonoids, anthocyanins, and tannins). These outcomes validate the high capacity of miscanthus to resist and tolerate contaminated conditions. Such results may contribute to further understanding of the miscanthus tolerance mechanisms.

Department of Environmental Chemistry and Technology Faculty of Environment Jan Evangelista Purkyně University in Ústí nad Labem Pasteurova 3632 15 400 96 Ústí nad Labem Czech Republic

Environmental and Forestry Sciences Department of Agriculture and Food Sciences Alma Mater Studiorum University of Bologna Via Zamboni 33 40126 Bologna Italy

Laboratoire Écologie Fonctionnelle et Environnement Université de Toulouse CNRS INPT UPS ENSAT Avenue de l'Agrobiopôle F 31326 Castanet Tolosan France

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