Mode of Action
The various plant responses to photochemical oxidants at various levels of biological organization are based on a sequence of biochemical and physiological events terminating in injury (Fig. 2.2). From this perspective, Tingey and G. E. Taylor (1982) proposed a conceptual model to summarize plant responses which included pollutant uptake (leaf conductance), perturbation, homeostasis, and injury which can be equated with or lead into damage (see Chap. 2.3). This concept is summarized as a basis for discussing the mechanisms of ozone and PAN actions on vegetation.
KeywordsPlant Community Ozone Concentration Lichen Species Ozone Exposure Photochemical Oxidant
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