Characteristics of Lipid Fatty Acids in Calli of Two Geographic Populations of Larix gmelinii

Abstract

The fatty acid (FA) composition of lipids of two geographic populations of larch ( Larix gmelinii (Rupr.) Rupr.) was determined. One of these populations was grown on soil with a naturally high content of fluorides. This population exceeded the control one in the content of unsaturated fatty acids (FAs) in the lipid fraction of its calli. These FAs were characterized by the presence of ∆ 5-unsaturated FAs with irregular positions of double bonds, such as taxoleic, pinolenic, and sciadonic acids. It was established that the representatives of the larch fluoride population exceeded those of the control population in the content of these FAs in the total lipid fraction (8.1 and 6.7%, respectively). Key words: Larix gmelinii -calli -fatty acids -∆ 5-unsaturated fatty acids -gas-liquid chromatographyAbbreviations : ACP-acyl-carrier protein; BA-benzyladenine; ECL-equivalent chain-length; FA-fatty acid; LRD and ORD-linoleoyl and oleoyl desaturase ratios; PUFAs-polyunsaturated fatty acids; UI-unsaturation index.