التفاصيل البيبلوغرافية
| العنوان: |
Cadmium toxicity causes oxidative stress and induces response of the antioxidant system in cucumber seedlings |
| المؤلفون: |
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. |
| المصدر: |
Brazilian Journal of Plant Physiology. September 2007 19(3) |
| بيانات النشر: |
Brazilian Journal of Plant Physiology, 2007. |
| سنة النشر: |
2007 |
| مصطلحات موضوعية: |
antioxidant enzymes, ascorbic acid, Cucumis sativus, heavy metal, lipid peroxidation, protein oxidation |
| الوصف: |
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. |
| نوع الوثيقة: |
article |
| وصف الملف: |
text/html |
| اللغة: |
English |
| تدمد: |
1677-0420 |
| DOI: |
10.1590/S1677-04202007000300006 |
| URL الوصول: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000300006 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edssci.S1677.04202007000300006 |
| قاعدة البيانات: |
SciELO |
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