The resistance level of lichen's thallome of Hypogymnia physodes (L.) Nyl. to nitric oxide

Infra-red spectroscopic methodic of evaluation of the nitric oxide's pressure on lichen's thallome is proposed. The dynamics of ecotoxicant accumulation of different concentration in Hypogymnia physodes (L.) Nyl. thallome during one week was revealed. The level of transformation of lichen's chemical composition was evaluated. Threshold concentration of nitric acid, which stresses lichens and leads to deep irreversible disturbances of physiology and structure of Hypogymnia physodes(L.) Nyl. was defined. The interpretation of changes of basic absorption strips of Hypogymnia physodes(L.) Nyl. in infra-red spectrum was given.