Effect of sulfur di oxide polluted air upon enzyme activity in plants originating from areas with different annual mean atmospheric sulfur di oxide concentrations

Horsman, D.C.; Wellburn, A.R.

Environmental Pollution 13(1): 33-40

1977


ISSN/ISBN: 0269-7491
Accession: 005273729

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Abstract
Plants of the broad-leaved dock (Rumex obtusifolius), originating from areas with different annual mean atmospheric SO2 concentrations, were exposed to charcoal filtered air or 0.2 ppm SO2 (.simeq. 520 .mu.g SO2/m3) for 11 days. Comparisons were made of the levels of activity of ribulose-diphosphate carboxylase, glutamate-pyruvate transaminase, glutamate-oxaloacetate transaminase and peroxidase in leaf extracts from the plants. The effects of the SO2 fumigation varied, depending on the age of the plant leaves and the area of origin of the plants. The differential response to SO2 exposure between the plants from the high mean SO2 area and the low mean SO2 area suggested that adaptation to the polluted conditions prevailing in the high mean SO2 area may have occurred in the plants originating from that area.