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Redox State in <em>Solanum</em> Seedlings under Cadmium Stress Conditions | OMICS International | Abstract
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
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Research Article

Redox State in Solanum Seedlings under Cadmium Stress Conditions

Chiraz Chaffei Haouari1,2*, Afef Hajjaji Nasraoui1, Elisa Carrayo2 and Houda Gouia1
1Unité de Recherche, Nutrition et Métabolisme Azotés et Protéines de Stress (99UR/09-20), Département de Biologie, Faculté des Sciences de Tunis. Campus Universitaire El Manar I, 1060, Tunis- Tunisie
2Unité de nutrition azotée des plantes, INRA, route de Saint-Cyr, F-78027 Versailles, France
Corresponding Author : Chiraz Chaffei Haouari
Université Tunis El Manar
Fac. Sci. Tunis, Dep. Bio 1060-Tunis-TUNISIE
Fax : 216 71 885 480
E-mail:[email protected]
Received March 08, 2012; Accepted March 26, 2012; Published March 28, 2012
Citation: Haouari CC, Nasraoui AH, Carrayo E, Gouia H (2012) Redox State in Solanum Seedlings under Cadmium Stress Conditions. J Environment Analytic Toxicol 2:135. doi: 10.4172/2161-0525.1000135
Copyright: © 2012 Haouari CC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Cadmium content and distribution as well as its effects on growth and oxidative stress were investigated in 17-day-old tomato seedlings (Solanum). The content of Cd increased with external Cd concentrations, and was considerably higher in roots than in shoots. Excess Cd suppressed biomass production of both roots and shoots and reduced chlorophyll content in leaves. Further, substantial increases of H2O2 and ascorbate contents, malondialdehyde formation, and antioxidant enzyme activities such as superoxide dismutase (SOD), catalase (CAT), and peroxidase (GPX) were observed in Cd-stressed plants in comparison with controls. The results suggest that the phytotoxic effects of Cd in tomato seedlings may be achieved by an enhanced production of active oxygen species (AOS) and subsequent lipid peroxidation with ascorbate synthesis as singe of tomato tolerance.

Keywords

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