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Título

Can salicylic acid modulate biochemical, physiological and population alterations in a macrophyte species under chemical stress by diclofenac?

AutorAlkimin, G.D.; Soares, Amadeu M. V. M.; Barata Martí, Carlos CSIC ORCID ; Nunes, Bruno
Palabras clavePharmaceuticals
Lemna minor
Plant toxicology
Pigments content
Biochemical alterations
Fecha de publicación15-oct-2020
EditorElsevier
CitaciónScience of the Total Environment 739:139715 (2020)
ResumenSalicylic acid (SA) is a pharmaceutical drug that may exert toxic effects by its own; however, simultaneous exposure of plants to SA and to other substances, often results in the significant changes in the patterns of toxic response/resistance to these other sources of chemical stress. Thus, the aim of this work was to investigate the capacity of SA of modulating Lemna minor responses co-exposed to the pharmaceutical drug, diclofenac - DCF. To attain this objective, L. minor was exposed for 7 days, to DCF alone, and to combinations of DCF with SA. After exposure, biochemical, physiological and population endpoints were analyzed as follows: catalase (CAT) and glutathione S-transferases (GSTs) activities, pigments content (chlorophyll a (Chl a), b (Chl b) and total (TChl), carotenoids (Car) and [Chl a]/[Chl b] and [TChl]/[Car] ratios), and growth specific rate, fresh weight and root length. Single exposures to DCF were capable of causing effects in all analyzed endpoints. However, co-exposure of DCF with SA partially reverted these effects. Finally, we may suggest that SA is capable to prevent the toxicity of DCF in macrophytes, by modulating the toxic response of exposed plants.
Versión del editorhttps://doi.org/10.1016/j.scitotenv.2020.139715
URIhttp://hdl.handle.net/10261/237962
DOI10.1016/j.scitotenv.2020.139715
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