Possible relationship between fatty acids and lipoperoxidation in two species of the Baikal endemic algae Draparnaldioides

Macroalgae are one of the important parts of aquatic ecosystems. They are a habitat and a source of organic matter and biologically active substances for many benthic organisms. The Study of metabolic processes in the cells of endemic algae of Lake Baikal is of particular interest. We have evaluated fatty acid composition (FA), hydrogen peroxide and malondialdehyde (MDA) content in two species of endemic genus Draparnaldioides (I) , arnoldi and D. baicalensis) immediately after harvesting and during cultivation in laboratory. During cultivation we have revealed multidirectional changes in the content of fatty acids and MDA, as distinguished from the content of hydrogen peroxide. We also discussed the relationship between FA metabolism and lipoperoxidation in aquatic organisms.