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Abstract
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Article Information:
Cadmium Stress Induced Changes in Antioxidant Enzymes, Lipid Peroxidation and Hydrogen Peroxide Contents in Barley Seedlings
Amel Alayat, Lynda Souiki, Mohammed Reda Djebar, Zine Eddine Boumedris, Ouissem Moumeni and Houria Berrebbah
Corresponding Author: Amel Alayat
Submitted: February 22, 2015
Accepted: March 1, 2015
Published: September 05, 2015 |
Abstract:
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Cadmium pollution is a problem of increasing significance for ecological, nutritional and environmental reasons. Different plant species and varieties show a wide range of plasticity in Cadmium tolerance, from a high degree of sensitivity to the hyper-accumulating phenotype of some tolerant plants. To avoid Cadmium toxicity, plants adopt various defense strategies. The present study was undertaken to assess and investigate the antioxidant responses of barley (Hordeum vulgare) L.) to cadmium treatment, seedlings of barley were grown in increasing concentrations of CdCl2 ranging from 25-100 &muM, for up 14 days in a hydroponic system. The results showed that CdCl2 reduce pigment content and caused oxidative damage as characterized by increased total soluble protein, Malondialdehyde (MDA) and Hydrogen peroxide (H2O2) contents. Under cadmium stress, the activities of antioxidative enzymes, including Ascorbate Peroxidase (APX), Peroxidase (POD) and Catalase (CAT) were increased considerably in plant tissues. The present results allow us to conclude that the barley plants showed a negative response to cadmium toxicity. The physiological and biochemical process in plants was significantly affected by stress of CdCl2. To deal with the cadmium induced oxidative stress, barley plants activated antioxidant enzymes to diminish the Reactive Oxygen Species (ROS).
Key words: Antioxidant enzyme, cadmium, Hordeum vulgare, oxidative stress, reactive oxygen species, tolerance,
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Cite this Reference:
Amel Alayat, Lynda Souiki, Mohammed Reda Djebar, Zine Eddine Boumedris, Ouissem Moumeni and Houria Berrebbah, . Cadmium Stress Induced Changes in Antioxidant Enzymes, Lipid Peroxidation and Hydrogen Peroxide Contents in Barley Seedlings. Advance Journal of Food Science and Technology, (7): 507-513.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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