The effect of soil fertility on antioxidant enzymes activity in a subarctic woody species

The influence of major nutrients’ reserves (available to plants) – nitrogen (N), phosphorus (P), potassium (K) in the top 25-cm layer soil on Karelian birch (Betula pendula Roth var. carelica (Mercl.) Hämet-Ahti) with non-figured and figured wood via antioxidant enzymes’ activity was investigated. analysis sites area where trees varying degree intensity were growing carried out. cambial zone sample during active growth period studied for AOS enzyme complex (superoxide dismutase (SOD); catalase (CAT); peroxidase (POD); polyphenol oxidase (PPO)). Cellulose content lignin studied. It noticed that availability nutrients investigated had plants. Thus, plants grew various levels differed activity, which a consequence different xylogenesis scenarios forms. supposed, certain site conditions (N, P, K levels) formation could affect intensity, cellulose content. N level P/N ratio most effects under adequate level. So indicate differences quality differ fertility levels).