The work is devoted to the mycelium biochemical composition of Stagonospora cirsii C-211, Calophoma complanata 32.121, Didymella macrostoma 32.52. These phylogenetically distant species of phoma-like micromycetes are the potential mycoherbicides of Cirsium arvense, Heracleum sosnowskyi, and Convolvulus arvensis, respectively. The S. cirsii C-211, C. complanata 32.121, D. macrostoma 32.52 mycelium in the early stationary growth phase was obtained on sucrose-soybean nutrient medium. It was shown that the lipid and carbohydrate (polyols, sugars) profiles of these strains have much in common. We suppose that levels of arabitol and trehalose influence to the stress-resistant of phoma-like micromycetes. In particularly, these carbohydrates serve structural and protective roles in the cell walls during osmotic and temperatures stress. The ratio of phosphatidylcholine to phosphatidylethanolamine and the proportion of phosphatidylserine among structural lipids also determine the properties of mycelium, and can be used to assess its quality.
Biochemical analysis of phoma-like fungi showed significant differences in the phosphatidic acid and glycoceramides levels and close values of phosphatidylcholine / phosphatidylethanolamine, trehalose, arabitol, mannitol, sorbitol levels.
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