University of Guilan Caspian Journal of Environmental Sciences 1735-3033 18 5 2020 12 01 Ecological and biochemical peculiarities of maple genus in the urban environment (Case study: Norway and Ash-leaved maple) 405 410 4465 10.22124/cjes.2020.4465 EN Petr Anatolyevich Kuzmin Department of Biology and Chemistry, Yelabuga Institute, Kazan Federal University, Kazan, Russia Ajgul Muhametnagimovna Kuzmina Department of Biology and Chemistry, Yelabuga Institute, Kazan Federal University, Kazan, Russia Irina Leonidovna Bukharina Institute of Civil Protection, Udmurt State University, Izhevsk, Udmurt Republic, Russia Konstantin Evgenievich Vedernikov Department of Environmental Engineering, Institute of Civil Protection, Udmurt State University, Udmurtia, Russia Raya Salikhovna Zaripova Department of Biology and Teaching Methods, Naberezhnye Chelny State Pedagogical University, Naberezhnye Chelny, Republic of Tatarstan, Russia Journal Article 2021 01 01 The study demonstrates the results of ecological and biochemical studies of Norway maple and ash-leaved maple growing in a large industrial center. High activity of ascorbinate oxidase was recorded in June, and a low one in August. The content of ascorbic acid decreases during the growing season in anthropogenic plantations. Under an increased air content of pollutants, representatives of the maple genus show an increase in the activity of polyphenol oxidase in comparison with the control plantations. It should be said that the content of condensed tannins in the leaves decreases. In the roadside plantations of Norway maple, under the most intense load, in July, the peroxidase activity in the leaves is lower than in the conventional control plantations, and in August it is higher than in control. https://cjes.guilan.ac.ir/article_4465_63641cb2979283bf280ecd420abcec70.pdf