Oxidative stress in wild growing plants | Oksidativni stres u samoniklim biljkama
2010
Miladinović, D., Medicinski fakultet, Niš (Serbia). Odsek za farmaciju | Ilić, B., Medicinski fakultet, Niš (Serbia). Odsek za farmaciju
This paper presents the results of determination of oxygen radicals (superoxide and hydroxyl radicals), malonyl-dialdehyde and soluble proteins in Astragalus onobrychis L. var. chlorocarpus (Griseb.) S. Kožuharov et D. K. Pavlova, Oxytropis pilosa (L.) DC. and Salvia officinalis L. from the locations in south-eastern Serbia, during their vegetative period. In the initial vegetation stage plants were not exposed to high oxidative stress, that was confirmed by low quantities of superoxide and hydroxyl radicals, as well as low quantities of malonyl-dialdehyde. In the blooming stage with intensification of photosynthesis and photorespiration the quantities of superoxide and hydroxyl radicals were significantly higher, which conditioned a high level of lipid peroxidation. A characteristic of seed forming stage was high quantities of superoxide and hydroxyl radicals, and higher oxidative damage. Oxygen radicals influenced the increase of membrane's permeability and initiate lipid membrane peroxidation. Drought stress, in seed forming stage, influences on oxidative damages in root and leaves of Astragalus onobrychis L. var. chlorocarpus (Griseb.) S. Kožuharov et D.K. Pavlova trough an increase of O2.-,.OH and LP and decrease of protein content. Root of Salvia contained lowest quantities of oxygen radicals in all vegetation stages and can be ended that this plant specie is successfully adapted to these living conditions.
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