Antifungal cellobiose lipid secreted by the epiphytic yeast Pseudozyma graminicola |
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| Authors: | W. I. Golubev T. V. Kulakovskaya A. S. Shashkov E. V. Kulakovskaya N. V. Golubev |
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| Affiliation: | (1) Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, 142290, Russia;(2) Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia;(3) Mendeleev University of Chemical Technology, Moscow, 125820, Russia |
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| Abstract: | The yeast Pseudozyma graminicola isolated from plants inhibited growth of almost all ascomycetes and basidiomycetes tested (over 270 species of ca. 100 genera) including pathogenic species. This yeast secreted a fungicidal agent, which was identified as a glycolipid composed of cellobiose residue with two O-substituents (acetyl and 3-hydroxycaproic acid) and 2,15,16-trihydroxypalmitic acid. The release of ATP from the glycolipid-treated cells indicated that this glycolipid impaired the permeability of the cytoplasmic membrane. Basidiomycetes were more sensitive to the cellobiose lipid than ascomycetes. |
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| Keywords: | antagonism biocontrol glycolipid fungicide Ustilaginales |
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