Cadmium toxicity causes oxidative stress and induces response of the antioxidant system in cucumber seedlings
By J. Gonçalves, A. Becker, D. Cargnelutti, L. A. Tabaldi, L. B. Pereira, V. Battisti, R. Spanevello, V. Morsch, F. Nicoloso, M. Schetinger. 2007
94 citations recorded by the source corpus.
In this study, the effects of cadmium (Cd) on lipid peroxidation, electrolyte leakage, protein oxidation, ascorbate peroxidase (APX; E.C. 1.11.1.11), catalase (CAT; E.C. 1.11.1.6) and superoxide dismutase (SOD; E.C. 1.15.1.1) activities, and ascorbic acid, non-protein thiol groups and total soluble protein contents in cucumber seedlings (Cucumis sativus L.) were investigated. Seedlings were grown in vitro in an agar-solidified substrate containing four Cd levels as CdCl2 (0, 100, 400, and 1000 µmol L-1) for 10 d. The lowest Cd level decreased the malondialdehyde concentration. Electrolyte leakage increased only at 1000 µmol Cd L-1, whereas protein oxidation and total soluble protein content were enhanced at 400 and 1000 µmol Cd L-1. Activity of APX was inhibited while the activities of CAT and SOD were increased at all Cd concentrations. Ascorbic acid was enhanced at 400 and 1000 µmol Cd L-1 whereas non-protein thiol groups were increased at all Cd supplies. The results evidence the importance of the enzymatic and non-enzymatic antioxidant system in response to cadmium toxicity in cucumber seedlings.
Subfields: Materials Chemistry, Plant Science
View Paper: https://www.semanticscholar.org/paper/31d14cd0ed5a03fe6bab6101d2ecbcda3c18b23f
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In Plant Science
Citations in the corpus
- Metals and seeds: Biochemical and molecular implications and their significance for seed germination (2011, background): “Moreover, a twofold increase in protein carbonylation was observed in cucumber seedlings following treatment with 1mmol L−1 of Cd (Gonçalves et al., 2007).”
- Brassinosteroids mitigate cadmium toxicity in cowpea plants (2018, background): “Moreover, EL values increased in Cucumis sativus seedlings exposed to a high concentration of Cd in a study by Gonçalves et al. (2007).”
- Responses of the phenolic compounds of Zea mays under heavy metal stress (2016, background): “Studies on plant abiotic stress have been intensively researched on antioxidant enzymes and total phenolic compound by plant physiologists (Verma and Dubey 2003; Rellan-Alvarez et al. 2006; Gonçalves et al. 2007; Rastgoo and Alemzadeh 2011; Hassan and Mansoor 2014).”