Abstract
Lipids of the thermophilic fungus Mucor miehei,strain UzLT-3, cultivated at 26 and 42 C are studied. The lipids of this strain contain isomeric 18:2 (9,12) and (6,9) fatty acids and polyene acids - and -18:3, which are uncharacteristic of thermophilic fungi. Cultivation at 26°C increases the fraction of phospholipids (PL), glycolipids (GL), and isomeric 18:3 fatty acids in the total lipids. It is hypothesized that the liquid-crystalline state of the membranes of this strain at reduced temperature are due to activation of desaturases δ12and δ15and possibly δ6, which are present in the fungus and participate in the biosynthesis of unsaturated acyl lipids.
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