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  • Title: Accumulation and response of willow plants exposed to environmental relevant sulfonamide concentrations.
    Author: Michelini L, Gallina G, Capolongo F, Ghisi R.
    Journal: Int J Phytoremediation; 2014; 16(7-12):947-61. PubMed ID: 24933895.
    Abstract:
    As a result of manure application to arable lands, agricultural ecosystems are often contaminated by veterinary antibiotics. In this study the aptitude of Salix fragilis L. to accumulate and tolerate sulfadimethoxine (SDM) was evaluated, together with the antibiotic effects on the plant development, with particular attention focused on roots. Results showed an antibiotic presence in root tissues, but not in leaves, after one month of SDM exposure to 0.01, 0.1, 1 and 10 mg l(-1). A hormetic growth of the hypogeal system was observed, however stress symptoms on the root development were only noticed after treatment to the highest dose. Results obtained from a second test, where new cuttings were exposed to 10 mg SDM l(-1) for different periods, suggested that willow tolerance to SDM increased with the exposure duration, probably because of the onset of particular acclimation mechanisms. Therefore, the present work indicates that this woody species could be utilized in the phytoremediation of sulfonamide antibiotics at doses comparable to that found in agricultural ecosystems once obtained appropriate confirmations through future studies at a laboratory and field scale.
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