Ozone affects birch (Betula pendula Roth) phenylpropanoid, polyamine and active oxygen detoxifying pathways at biochemical and gene expression level. - Tuomainen,J..; Pellinen,R..; Roy,S..; Kiiskinen,M..; Eloranta,T..; Karjalainen and,R..; Kangasjärvi,J.. (Journal of Plant Physiology, 1996)