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The Influence of Stresses on the Component Composition and Structure of Juniper Wood

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K.G. Bogolitsyn, M.V. Surso, M.A. Gusakova, I.N. Zubov

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The influence of abiotic stress on wood of common juniper (Juniperus communis L.) grown in the subarctic zone of the Russian Federation is studied in the paper. The sharp decrease of an-nual growth and the acceleration of biosynthesis processes of protective components take place in the early stages of juniper wood desiccation. The lignin content increases from 28.3 to 35.2 %. On the contrary, the rate of formation of the polysaccharide part is significant-ly reduced. Due to the lack of primary components the possibility of polysaccharide degrada41
tion to the carbohydrates increases. Changes of the component composition of wood lead to the destruction of the thermodynamic compatibility of components of lignin-carbohydrate matrix, and the formation of an unstable supramolecular structure of the wood substance of a cell wall. As a result, the wood substance formed in the stress period is characterized by the less mechanical strength compared with sound wood, which is proved by the microscop-ic investigation. We can observe a lot of cracks and destruction of some layers of a cell wall at the splits of damaged wood, as well as the coalescence of fragments of their destruction on the surface. Delamination of the secondary cell wall into the separate layers (S1, S2, S3) and the absence of a tertiary wall – a warty layer are observed on the cross-sectional split-ting of desiccated wood. The above-mentioned changes in the structure of the juniper wood substance are observed even in the second year of desiccation, but they are typical only for the newly formed wood substance and do not affect heartwood.


K.G. Bogolitsyn, Doctor of Chemical Sciences, Chief Research Scientist M.V. Surso, Doctor of Agricultural Sciences, Senior Research Officer M.A. Gusakova, Candidate of Engineering Sciences, Chief of Laboratory I.N. Zubov, Candidate of Chemical Sciences, Research Officer


Federal Research Center for Integrated Study of the Arctic of the Russian Academy of Sciences, Naberezhnaya Severnoy Dviny, 23, Arkhangelsk, 163002, Russian Federation; e-mail:


juniper, abiotic stress, winter physiological drought, cell wall, wood substance

For citation

Bogolitsyn K.G., Surso M.V., Gusakova M.A., Zubov I.N. The influence of Stresses on the Component Composition and Structure of Juniper Wood. Lesnoy zhurnal (Forestry journal), 2016, no. 6, pp. 33–41. DOI: 10.17238/issn0536-1036.2016.6.33


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Received on March 29, 2016

The Influence of Stresses on the Component Composition and Structure of Juniper Wood


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