Abstract
The gradual alteration of chloroplast ultrastructure by atmospheric pollution under natural environmental conditions was studied for the following trees: locust tree ( Robinia pseudocacia), lime tree ( Tilia tomentosa), bloody twig ( Cornus sanguinea), catalpa ( Catalpa bignoioides), hornbeam ( Carpinus betulus), and oak tree ( Quercus petraea). Under the effect of a polluted atmosphere with a mixture of SO 2 (the main pollutant, usually around 0.2–1.0 mg/m 3 and to a maximum emission around 4–7 mg/m 3), nitrogen oxides and ether gases spread by a noniron metal works, chloroplast ultrastructure was disrupted. All plant materials were collected from a forest and a park nearby (1 km) the metal works. The tree species may be arranged in a serial order from more resistant to very sensitive: Robinia > Tilia > Cornus > Catalpa > Carpinus > Quercus).
Published Version
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