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Photosynthetic rates and antioxidant enzyme activity ofPlatanus occidentalis growing under two levels of air pollution along the streets of Seoul

한국식물학회지 2006년 49권 4호 p.315 ~ 315
 ( Woo Su-Young ) - University of Seoul Department of Environmental Horticulture

 ( Je Sun-Mi ) - University of Seoul Department of Environmental Horticulture

Abstract


We investigated the net photosynthetic rates and antioxidative enzyme activity inPlatanus occidentalis trees growing on two separate streets in Seoul, and representing different degrees of air pollution. In general, concentrations of SO2, NO2, and PM10 decreased from May to September. The photosynthetic rate was reduced significantly on the street with higher levels of pollution. Moreover, activities of two antioxidative enzymes, ascorbate peroxidase and glutathione reductase, were greater in May along the more polluted street. These data suggest thatP. occidentalis growing in highly polluted environments may increase their antioxidant enzyme activity to compensate for and to minimize the damage from this stress.

키워드

antioxidative enzymes; stress compensation
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