Роль фосфолипидов и нейтральных липидов покоящихся и прорастающих спорангиоспор Cunninghamella echinulata и Umbelopsis ramannianа – продуцентов ненасыщенных жирных кислот

Abstract

Changes in the content and composition of lipids and fatty acids in exogenously dormant ("spores 0") and germinating sporagiospores (“spores P”) of zygomycete fungi Cunninhamella echinulata VKM F-663 and Umbelopsis ramanniana VKM F-582 in distilled water were investigated. Changes in spores P lipids compared with spores 0 are expressed in an increase in the proportion of unsaturated fatty acids, in the decrease in the content of massive phospholipids (phosphatidylcholine and phosphatidylethanolamine) and in the increase in the levels of phosphatidylglycerol and phosphatidic acid, which can function as signaling compounds. The level of the basic phospholipid of mitochondrial membranes ‒ cardiolipin in the process of spore exit from the state of dormancy increased in both representatives of zygomycetes. A certain increase in the content of free and esterified sterols was observed in the composition of neutral lipids of the spores of U. ramanniana. During the C. echinulata sporangiospores germination there did not occur any significant changes in the composition of neutral lipid classes, which can be explained by the fact that they are not the main reserve, mobilizing at the exit from the state of dormancy