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Accumulation and Effects of Sulfadimethoxine in Salix Fragilis L. Plants: A Preliminary Study to Phytoremediation Purposes

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The application of manure to fertilize arable lands is one of the major means through which veterinary sulfonamides (SAs) enter the environment. Little is known about the capacity of woody plants to phytoremediate this class of antibiotics. To this purpose we performed preliminary studies to evaluate Salix Fragilis L. response to sulfadimethoxine (SDM) by investigating both its ability to absorb and tolerate doses of SDM found in fresh faeces of treated calves. Forty cuttings were exposed to either 0, 0.5, 1, or 2 mM of SDM for one month. Decreases in photosynthetic electron transport rate and net CO2 assimilation after 25 days for the higher SDM concentrations were noticed. Moreover, alterations in root morphology of treated plants were observed and further investigated through electron microscopy. However, collected data revealed high root accumulation potential. These preliminary results are promising as they demonstrate that Salix Fragilis L. can both absorb and tolerate high concentrations of SAs.
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Keywords: chlorophyll fluorescence; photosynthesis; scanning electron microscopy; sulfonamides; tolerance; willow

Document Type: Research Article

Affiliations: 1: Department of Agricultural Biotechnology, Agripolis,University of Padova, viale dell’Università 16, Legnaro (Padova), Italy 2: Department of Environmental Agronomy and Crop Productions, Agripolis,University of Padova, viale dell’Università 16Legnaro (Padova), Italy 3: Department of Biology,University of Padova, via U. Bassi 58/BPadova, Italy

Publication date: April 1, 2012

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