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1 Acta Biologica Cracoviensia. Series Botanica

1 2005

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Effects of some heavy metals on content of chlorophyll, proline and some antioxidant chemicals in bean [Phaseolus vulgaris L.] seedlings

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Zengin F. K. , Munzuroglu O.

Acta Biologica Cracoviensia. Series Botanica

2005

tom 47

nr 2

The effects of lead, copper, cadmium and mercury on the content of chlorophyll, proline, retinol, α-tocopherol and ascorbic acid were investigated in 17-day-old bean seedlings (Phaseolus vulgaris L.) grown in Hoagland solution spiked with various concentrations of Pb, Cu, Cd and Hg. Control and heavy metal-treated plants were grown for 10 days in Hoagland solution. Content of total chlorophyll (a and b), proline, retinol, α-tocopherol and ascorbic acid was measured in ten-day-old primary leaves by High Performance Liquid Chromatography (HPLC). Total chlorophyll content declined progressively with increasing concentrations of heavy metals. A significant increase of proline, retinol, α-tocopherol and ascorbic acid content was detected in primary leaves after ten-day exposure to heavy metals. The strongest effect on total chlorophyll, proline, retinol, α-tocopherol and ascorbic acid content was found in plants exposed to mercury, followed by the sequence Cd++ > Cu++ > Pb++.