Abstract
Lipids of conidia of Erysiphe graminis tritici were analysed by thin-layer chromatography, gas chromatography and mass spectrometry. Saturated and unsaturated hydrocarbons (such as C 17 , C 19 , C 21:1 and C 25:1 and naturally occurring methyl esters of long-chain fatty acids (C 17 to C 25 ) were detected. The free fatty acids ranged from C 12 to C 24 and unsaturated fatty acids such as C 22:1 and C 24:1 were present. The conidial walls had different appearances when processed with scanning electron microscopy, freeze-etching and thin-sectioning procedures. Lipid bodies were not present in lipid extracted conidia and spore walls of lipid extracted conidia characteristically had electron dense tripartite layers and clumped together.
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