Influence of fly ash aided phytostabilisation of Pb, Cd and Zn highly contaminated site on tree species oxidative stress. - Archive ouverte HAL Accéder directement au contenu
Poster De Conférence Année : 2013

Influence of fly ash aided phytostabilisation of Pb, Cd and Zn highly contaminated site on tree species oxidative stress.

Résumé

Combined use of in situ stabilization and energy production from forest biomass is a cost effective technique being explored to confront the problem of phytomanagement of metal contaminated sites. Between different amendments studied, Coil Fly Ash (CFA) has been shown to reduce metals mobility and to limit physico-chemical characteristics modifications of the soils due to the afforestation. Moreover, others studies revealed CFA efficiency to impair metal accumulation and to alleviate stress in several plants species. However, little is known about the plant health promoting action of these amendments, especially benefits on tree species growing in TEs polluted sites. This in situ study aimed at evaluating the long-term effects of CFA as metal immobilizing agent in aided phytostabilization of a former agricultural field highly contaminated with cadmium, lead and zinc, affected by the activity of the Metaleurop Nord smelter (Noyelles-Godault, North of France), using four tree species (Alnus glutinosa L., Acer pseudoplatanus L., Salix Alba L., and Robinia pseudoacacia L.). Before being planted with a tree mix in 2000, the site was divided in a reference plot (R) with no amendment and two plots amended with silico-aluminos (FA1) and sulfo-calcic fly ash (FA2). Eleven years after plantation, antioxidants systems (glutathione status, superoxide dismutase and peroxidase activities) and oxidative damages (malondialdehyde production and 8- hydroxydeoxyguanosine formation) in leaves were monitored as biological indicators of the trees health. Metallic stress was also evaluated by analysis of lipid composition and content, the determination of saturated fatty acids/ insaturated fatty acids ratio and omega 3 index: C18:3/(C18:0+C18:1+C18:2). Taken together, information on physiological response of trees to metallic pollution will help us to select species and soil amendments suitable for the phytoremediation of the experimental site.
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Dates et versions

hal-04354017 , version 1 (19-12-2023)

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  • HAL Id : hal-04354017 , version 1

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Stéphane Firmin, Sonia Labidi, Anissa Lounès - Hadj Sahraoui, Joël Fontaine, Sylvain Billet, et al.. Influence of fly ash aided phytostabilisation of Pb, Cd and Zn highly contaminated site on tree species oxidative stress.. Urban Environmental Pollution Conference, Nov 2013, Beijing, China. ⟨hal-04354017⟩
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