Abstract
Qualitative and quantitative differences were found between the lipids of cell walls (CW) and of whole mycelial cells and dormant cells of mucoraceous and ascomycete fungi. Thus, whole mycelial cells (WC) contained more lipids than CW. Unlike sporangiospores and conidia (exogenous dormant spores), zygotes were found to have the highest content of triacylglycerol lipids (70%). Cell walls of mucoraceous fungi contained more triacylglycerols (TAG) and less polar lipids than ascomycete lipids. While all CW and WC studied were similar in fatty acid (FA) composition, their ratio was specific for each structure: linoleic acid predominated in mycelial CW and WC, while oleic acid was predominant in the spores; this difference was especially pronounced in conidial WC. Unlike WC, in CW massive lipids may be represented not by phosphatidylethanolamine (PEA) and phosphatidylcholine (PC), but by free fatty acids (FFA), free (FSt) and etherified sterols (ESt), phosphatidic acid (PA), fatty acid methyl esters (FAME), and glycolipids (GL), which is an indication of a special functional role of CW.
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