title: Toxicity and removal of pesticides by selected aquatic plants.
abstract: Pesticides are being detected in water bodies on an increasingly frequent basis. The present study focused on the phytoremediation potential of selected aquatic plants to remove phytosanitary products from contaminated water. We investigated the uptake capacity of Lemna minor (L. minor), Elodea canadensis (E. canadensis) and Cabomba aquatica (C. aquatica) on three pesticides: copper sulphate (fungicide), flazasulfuron (herbicide) and dimethomorph (fungicide). Pesticide toxicity was evaluated by exposing plants to five concentrations (0-1 mg L(-1)) in culture media for 7d using chlorophyll fluorescence as a biomarker. The toxicity of the contaminants was the same for all the aquatic plants studied and occurred in this descending order of toxicity: flazasulfuron>copper>dimethomorph. We found that L. minor had the most efficient uptake capacity, followed by E. canadensis and then C. aquatica. The maximum removal rate (microg g(-1)fresh weight d(-1)) of copper, flazasulfuron and dimethomorph was 30, 27 and 11, respectively.
authors.affiliation: Laboratoire Plantes Pesticides et Développement Durable (PPDD), UPRES 2069 (URVVC), Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex 2, France.
authors.forename: Rachel
authors.initials: R
authors.lastname: Olette
authors.forename: Michel
authors.initials: M
authors.lastname: Couderchet
authors.forename: Sylvie
authors.initials: S
authors.lastname: Biagianti
authors.forename: Philippe
authors.initials: P
authors.lastname: Eullaffroy
mesh_terms: D029064:Araceae / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D002734:Chlorophyll / Q000737:chemistry / Q000378:metabolism; D003300:Copper / Q000302:isolation & purification / Q000378:metabolism; D005453:Fluorescence; D031321:Hydrocharitaceae / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D019684:Magnoliopsida / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D010575:Pesticides / Q000302:isolation & purification* / Q000378:metabolism* / Q000633:toxicity; D063245:Plant Development; D010944:Plants / Q000187:drug effects / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism / Q000633:toxicity
chemical_list: D010575:Pesticides; D014874:Water Pollutants, Chemical; D002734:Chlorophyll; D003300:Copper