Naslov
Short term exposure of Lemna minor and Lemna gibba to mercury, cadmium and chromium

Autori
Varga, Martina ; Horvatić, Janja ; Čelić, Ante

Izvornik
Central european journal of biology (1895-104X) 8 (2013), 11; 1083-1093

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
antioxidative response; duckweed; metal toxicity; oxidative stress; antioxidative enzymes; lipid peroxidation

Sažetak
The effects of mercury (Hg), cadmium (Cd) and chromium (Cr) in concentrations ranging from 0.02 to 20 mg L-1 applied for 24 h were assessed in Lemna minor and Lemna gibba by measuring changes in protein concentration, ascorbic acid, phenolics, malondialdehyde (MDA), hydrogen peroxide (H2O2), the activity of guaiacol peroxidase (GPOX) and catalase (CAT). Ascorbic acid, phenolics, CAT and GPOX played a key role in the antioxidative response of L. gibba. Inadequate activity of antioxidant enzymes in the L. minor resulted in MDA and H2O2 accumulation. In both used species, Hg treatment decreased protein content and increased CAT and GPOX activity, but decreased MDA and H2O2 levels. Cd and Cr had opposite impacts on two used Lemna species on almost all observed parameters. Better antioxidative responses of L. gibba indicate higher tolerance to Hg, Cd and Cr in comparison to L. minor.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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