title: Seasonal variations of cadmium and zinc in Arrhenatherum elatius, a perennial grass species from highly contaminated soils.
abstract: There is interest in studying bioaccumulation in plants because they form the base of the food chain as well as their potential use in phytoextraction. From this viewpoint, our study deals with the seasonal variation, from January to July, of Cd and Zn bioaccumulation in three metallicolous populations of Arrhenatherum elatius, a perennial grass with a high biomass production. In heavily polluted soils, while Zn bioaccumulation is weak, A. elatius accumulates more Cd than reported gramineous plants, with concentration of up to 100 microg g(-1). Our results also showed seasonal variations of bioaccumulation, underlying the necessity for in situ studies to specify the date of sampling and also the phenology of the collected plant sample. In our experimental conditions, accumulation is lower in June, leading us to the hypothesis of restriction in heavy metals translocation from roots to aerial parts during seed production.
authors.affiliation: Institut Lillois d'Ingénierie de la Santé, Université Droit et Santé de Lille, EA 2690, 42 rue Ambroise Paré, 59120 Loos, France. aderam@ilis.univ-lille2.fr
authors.forename: Annabelle
authors.initials: A
authors.lastname: Deram
authors.forename: Franck-Olivier
authors.initials: FO
authors.lastname: Denayer
authors.forename: Daniel
authors.initials: D
authors.lastname: Petit
authors.forename: Chantal
authors.initials: C
authors.lastname: Van Haluwyn
mesh_terms: D018533:Biomass; D001711:Biotransformation; D002104:Cadmium / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D005602:France; D007220:Industrial Waste; D006109:Poaceae / Q000737:chemistry*; D012621:Seasons; D012989:Soil Pollutants / Q000032:analysis*; D015032:Zinc / Q000032:analysis*
chemical_list: D007220:Industrial Waste; D012989:Soil Pollutants; D002104:Cadmium; D015032:Zinc