Oxalate oxidase and non-enzymatic compounds of the antioxidative system in young Serbian spruce plants exposed to cadmium stress
2008
Ducic, T. | Maksimovic, V. | Radotic, K., University of Belgrade, Belgrade (Serbia). Center for Multidisciplinary Studies
We studied changes in the concentrations of ascorbate and glutathine, composition of soluble phenolics, and activity of oxalate oxidase in 75-day-old Serbian spruce plants after exposure to 5 microM and 50 microM cadmium for 6-48 hours. The presence of OxOx activity in a conifer species is here demonstrated for the first time. Both Cd concentrations induced a decrease of OxOx activity in treated plants in comparison with the control at all sampling dates. The concentrations of reduced glutathione, its oxidized form, and reduced ascorbate in the plants decreased during 48-h treatment with cadmium. Among simple phenolics, only catechin increased significantly during Cd treatment.
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