Fatty Acid Composition in Fractions of Total Lipids from the Buds of Plants of the Betula L. Genus by the Opening Phases


The fatty acid composition (FAC) of fractions of organic compounds isolated from total lipids (TL) by successive solvents—chloroform, acetone, and methanol, taken as neutral lipids (NL), glycolipids (GL), and phospholipids (PL)—was studied by the phases of the opening of buds in plants of the Betula L. genus [1]. It was found that the FAC of the TL fractions of opening buds of trees with morphological features of Betula pubescens Ehrh., Betula pendula Roth, and Betula pendula Roth var. carelica (Mercklin) Hämet-Ahti is represented mainly by unsaturated fatty acids (USFAs) (up to 88% of the total fatty acids). Linolenic and linoleic acids (up to 55 and 47% of the total fatty acids, respectively) constituted the main share of USFAs. Palmitic acid predominated quantitatively among saturated fatty acids (SFAs) (up to 42%). The content of linoleic acid in all SL fractions decreased with the development of buds in all three birches, while the content of linolenic acid in the composition of the GL and PL fractions increased. In birches differing in morphological characteristics, the specific features of the FAC from the SL fractions of the buds were studied by the opening phases.

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The studies were carried out on the scientific equipment of the Center for Collective Use of the Federal Research Center Karelian Scientific Center (Russian Academy of Sciences).


The research was financed from the federal budget for the fulfillment of the state assignment of the Karelian Scientific Center of the Russian Academy of Sciences (Forest Institute, Karelian Scientific Center, Russian Academy of Sciences) and the Timiryazev Institute of Plant Physiology (Russian Academy of Sciences).

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Correspondence to I. V. Morozova.

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Translated by M. Shulskaya

Abbreviations: DBI—double bond index; FA—fatty acids; FS—fatty acid composition; GL—glycolipids; K—coefficient of unsaturation; NL—neutral lipids; PL—phospholipids; SFA—saturated fatty acids; TL—total lipids; USFA—unsaturated fatty acids.

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Morozova, I.V., Chernobrovkina, N.P., Il’inova, M.K. et al. Fatty Acid Composition in Fractions of Total Lipids from the Buds of Plants of the Betula L. Genus by the Opening Phases. Russ J Plant Physiol 68, 94–101 (2021). https://doi.org/10.1134/S1021443721010131

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  • Betula pubescens
  • Betula pendula
  • buds
  • opening phases
  • total and neutral lipids
  • phospho- and glycolipids
  • fatty acids