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Advisor(s)
Abstract(s)
Natural toxins produced by freshwater cyanobacteria, such as cylindrospermopsin (CYN), have been regarded as an emergent environmental threat. Cyanotoxins can be applied directly to soil by using contaminated water for agricultural irrigation. Despite the risks for food safety, the impact of cyanotoxins in agriculture is not yet fully understood. Furthermore, in soil-plant system the simultaneous occurrence of cyanotoxins and pesticides can be highly expectable. Pesticides, especially residues of glyphosate (GLY), have been frequently detected in soils and have been recognized to contribute to soil toxicity. Beetroot (Beta vulgaris) are root vegetables, extensively consumed worldwide with great importance for human nourishment and economy. It is, therefore, important to evaluate the effects of using water contaminated with CYN and GLY on beetroot cultivation. This study aimed to assess the effects of environmentally relevant concentrations of CYN, GLY and a mixture of both on growth and mineral content of beetroot (roots and leaves) cultivated in soil system. Plants were exposed in controlled conditions to CYN-crude extracts (50μg/kg) (Chrysosporum ovalisporum culture - LEGE X-001), isolated and in mixture with GLY (750 μg/kg) for 4 months. Beetroot growth was assessed by determining its fresh (Fw) and dry weight (Dw). The determination of mineral content was made by inductively coupled plasma-mass spectrometry (ICP-MS), after sample mineralization by microwaveassisted acid digestion. The results denote that Fw and Dw of beetroot (leaves and roots, respectively) were significantly changed (<i>P
Description
Keywords
Cylindrospermopsin Glyphosate Beta vulgaris
Citation
Priya, V., Freitas, M., Pinto, E., Almeida, A., Oliveira, F., Azevedo, J., Campos, A., Sudhakaran, R., & Vasconcelos, V. (2021). Effects of cylindrospermopsin and glyphosate at environmentally relevant concentrations on growth and mineral content of beetroot plants (Beta vulgaris). SETAC Europe 31st Annual Meeting Abstract Book, 256–257. https://cdn.ymaws.com/www.setac.org/resource/resmgr/abstract_books/europe2021_abstract_book_.pdf