biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 33:3-9, 1991 | DOI: 10.1007/BF02873778

Effect of heavy metals on isoperoxidases of Wheat

S. Karataglis1, M. Moustakas1, L. Symeonidis1
1 Department of Botany, University of Thessaloniki, Thessaloniki, Greece

The influence of increasing concentrations of copper, zinc, lead, nickel, chromium and cadmium on 14-day-old seedlings of wheat (Triticum aestivum L. cv. Vergina) was studied. Plants were grown in 1/10 strength Rorison's nutrient solution with increasing concentrations of each of the metals added separately. The toxicity of metals depressed shoot growth but the most evident symptoms were on roots. The concentration of each metal which caused inhibition of root growth was chosen to study the influence of metals on isoperoxidases of wheat shoots. The concentrations employed did not alter the number of peroxidase bands but almost in all cases enhanced the intensities of bands of pH 4.0-4.2 and 5.0-5.4, while they decreased the intensities of bands of pH 4.2-4.6 and 5.4-6.5.
The similar effects of the different heavy metals employed may suggest similarity in metal action on wheat isoperoxidases. The increased intensities of peroxidase bands may be considered as an indication of enhanced senescence caused by the heavy metal treatments.
Generally, our results suggest that the heavy metals employed have caused complex changes on the multiple forms of peroxidases.

Keywords: Triticum aestivum L. cv. Vergina; toxicity; isoelectric focusing

Received: February 3, 1989; Accepted: March 1, 1990; Published: January 1, 1991  Show citation

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Karataglis, S., Moustakas, M., & Symeonidis, L. (1991). Effect of heavy metals on isoperoxidases of Wheat. Biologia plantarum, 33(1), 3-9. doi: 10.1007/BF02873778
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