A carregar...
Publicação
Acetaminophen induces an antioxidative response in lettuce plants
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.86 MB | Adobe PDF |
Orientador(es)
Resumo(s)
Contaminants of environmental concern, like pharmaceuticals, are being detected in increasing
amounts in soils and irrigation waters and can thus be taken up by plants. In this work, the
uptake of acetaminophen (ACT) by lettuce plants was evaluated through a hydroponic experiment
at different concentrations (0, 0.1, 1 and 5 mg L1 ACT). The pathways related to oxidative stress
induced by ACT were studied in lettuce leaves and roots at 1, 8 and 15 days after exposure. Stress
indicators such as hydrogen peroxide and malondialdehyde (MDA) contents were analyzed, revealing
increases in plants contaminated with ACT in comparison to control, confirming the occurrence
of oxidative stress, with the exception of MDA in leaves. The enzymatic activities of catalase, superoxide
dismutase, guaiacol peroxidase, ascorbate peroxidase and glutathione peroxidase, directly
involved in the antioxidative system, showed significant differences when compared to control
plants, and, depending on the enzyme and the tissue, different trends were observed. Glutathione
reductase revealed a decrease in contaminated leaves, which may imply a specific impact of ACT
in the glutathione cycle. Significant increases were found in the anthocyanin content of leaves,
both with exposure time and ACT concentration, indicating an antioxidative response induced by
ACT contamination
Descrição
Palavras-chave
acetaminophen Lactuca sativa emerging pollutants pharmaceuticals oxidative stress
Contexto Educativo
Citação
Leitão, I.; Martins, L.L.; Carvalho, L.; Oliveira, M.C.; Marques, M.M.; Mourato, M.P. Acetaminophen Induces an Antioxidative Response in Lettuce Plants. Plants 2021, 10, 1152
Editora
MDPI