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Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Pinus sylvestris L.; fatty acid; acyl-lipid desaturases, Pinus sylvestris; жирные кислоты; десатуразы
Temperature – a significant ecological factor of the environment, which is characterized by very high variation. First of all, the cell membranes are subjected to the temperature factor, whose resistance associated with the presence of polyunsaturated fatty acids in the membrane structure and the activity of acyl-lipid desaturases responsible for membrane fluidity.The change in the fatty acid composition on needles of during vegetation period was investigated. The dynamics of saturated and unsaturated fatty acids and the role of acyl-lipid desaturases in adaptive changes in fatty acid composition are shows.27 fatty acids are found in the needles of Pinus sylvestris L. growing in the vicinity of the Melnichnaya Pad, which content are varies depending on the season.The fatty acid composition of Pinus sylvestris L. needles were studied during the year. The dynamics of saturated and unsaturated fatty acids and the role of acyl-lipid desaturases to adaptive changes in fatty acid composition were shows.The unsaturated fatty acids are predominate in general content of fatty acids, the maximum content of which is observed during the period of low freezing temperatures, saturated fatty acids-in the spring period.Whereas the highest values of the of double bonds index (1,84–1,88) are observed in winter due to the low content of saturated fatty acids, the lowest value of the index observed in the summer.Also there was relationship between content of oleic, linoleic and α-linolenic acids with modification activity of acyl-lipid ω-3, ω-6 and ω-9 desaturases.
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