Effects of Sulphur Dioxide on Lichen Lipids and Fatty Acids

摘要

Lipids and fatty acids were studied in some lichen species exposed to 1 ppm of aqueous sulphur dioxide. Alterations in composition of individual lipids are species-specific in the tested lichen. Lichen exposure to SO_2 results in slight reduction in the total phospholipid content. The amount of betaine lipid diacylglyceryltrimethylhommoserine was increased in Stereocaulon paschale but not changed in Pelltigera aphthosa. Increase in fatty acid unsaturation extent in Peltigera aphthosa lichen in response to SO_2 can play an adaptive role.