The influence of abiotic stress factors on the intensity of lipid peroxidation and superoxide dismutase activity in shoots of aquatic moss Fontinalis antipyretica Hedw.
N. Kyjak*, I. Mykiyevych**
*Institute of Ecology of the Carpathians of NAS of Ukraine
11, Stefanyk St., Lviv 79000, Ukraine
**Ivan Franko National University of Lviv
4, Hrushevskyi St., Lviv 79005, Ukraine
morphogenesis@mail.lviv.ua
The influence of ions of heavy metals (lead and cadmium), water deficit and thermal stress on the content of malonic dialdehide and superoxide dismutase activity in shoots of the aquatic moss was investigated. It was shown that the abiotic stress factors intensificated lipid peroxidation process and increased the superoxide dismutase activity. The increasing of osmotic potential, temperature and concentration of cadmium ions stimulated the highest activity of prooxidative and antioxidative systems. It was established, that the changes of intensity of the lipid peroxidation and superoxide dismutase activity in the stress conditions depended on specificity and intensity of the stress factor.
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Keywords: heavy metals, thermal stress, water deficit, malonic dialdehide, superoxide dismutase
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