Tracing the acclimation of European beech (Fagus sylvatica L.) populations to climatic stress by analyzing the antioxidant system

Through a common garden (provenance) experiment, we investigated the metabolic responses to climatic stress with regard acclimation potential of different European beech (Fagus sylvatica L.) populations. Selected enzymatic and non-enzymatic antioxidants were analyzed in leaves. Peroxidase (POD) polyphenol oxidase (PPO) enzyme activity, total protein content as well ABTS [2.2’-azino-bis-(3-etylbenzothiazoline)-6-sulphonic acid] antioxidant capacity measured leaves selected Major leaf polyphenols identified their relative amounts compared. Significant correlations found between phenotypic (diameter growth) response simulated activity (and amount) chemical components. The concentrations certain polyphenols, POD may be indicators populations contribute forecasting climate change effects, which can aid selection suitable propagation material for adaptive silviculture.