Peroxidase Activity Within the Needles of Common Juniper (Juniperus Сommunis L.): Dynamics of Seasonal and Age-Related Changes

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UDС

577.15.08: 58.01:581.5

DOI:

Abstract

During growth and development of woody plants their composition changes and, consequently, properties and structure of a plant, together with enzymatic complexes, change too, being integral parts of the living cell. One of the most important and common enzymes of higher plants is peroxidase. Age-related changes in peroxidase activity and lignin content are of a similar nature, but seasonal variations in the enzyme can level the age dynamics. The paper aimed to determine seasonal variations in peroxidase activity of juniper needles and evaluate their contribution to the age dynamics. It was shown that the dynamics of seasonal changes in peroxidase activity of juniper needles depends on the plant’s gender and stage of reproductive development.  Ripening of the berry-like cones is accompanied by increasing peroxidase activity; however the age of juniper is a determinant of this parameter value.

Authors

K.G. Bogolitsyn, M.V. Surso, M.A. Gusakova, I.N. Zubov Institute of Ecological Problems of the North, Ural Branch of the Russian Academy of Sciences

Affiliation

Institute of Ecological Problems of the North, Ural Branch of the Russian Academy of Sciences

Keywords

enzymatic activity, peroxidase, seasonal variations, age-related dynamics, juniper.