Short Time Effects of Air Pollutants to Leaf, Bark and Wood Photosynthesis of Beech (Fagus sylvatica L.）

抄録

　Gaseous air pollutants penetrate stomata in leaves and lenticels in stems, thus reaching the mesophyllic or parenchymal interior of the organs. As inner bark tissues in young limbs are able to perform photosynthesis, the effects of different air pollutants to chlorenchymal photosynthesis were examined. Short time exposure to selected air pollutants was studied in the aqueous phase and the inhibitory concentrations were compared between leaf, stem, bark and proper wood photosynthesis. Peridermal tissues proved to be effective barriers for pollutant diffusion. Photosynthetic cells of the proper wood seemed to be most tolerant, a fact that needs further studies.