| Registro completo |
| Provedor de dados: |
Braz. J. Plant Physiol.
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| País: |
Brazil
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| Título: |
Cadmium toxicity causes oxidative stress and induces response of the antioxidant system in cucumber seedlings
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| Autores: |
Gonçalves,Jamile F.
Becker,Alexssandro G.
Cargnelutti,Denise
Tabaldi,Luciane A.
Pereira,Luciane B.
Battisti,Vanessa
Spanevello,Rosélia M.
Morsch,Vera M.
Nicoloso,Fernando T.
Schetinger,Maria R.C.
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| Data: |
2007-09-01
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| Ano: |
2007
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| Palavras-chave: |
Antioxidant enzymes
Ascorbic acid
Cucumis sativus
Heavy metal
Lipid peroxidation
Protein oxidation
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| Resumo: |
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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000300006
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| Editor: |
Brazilian Journal of Plant Physiology
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| Relação: |
10.1590/S1677-04202007000300006
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Plant Physiology v.19 n.3 2007
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| Direitos: |
info:eu-repo/semantics/openAccess
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