Journal
CANADIAN JOURNAL OF MICROBIOLOGY
Volume 65, Issue 12, Pages 870-879Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/cjm-2019-0284
Keywords
basidiomycete; Favolaschia manipularis; sterols; 9(11)-dehydroergosterol; ergosterol peroxide
Categories
Funding
- institutional research project Biodiversity, ecology, structural and functional features of fungi and fungus-like protists [AAAA-A19-119020890079-6]
- institutional research project Taxonomic diversity, ecology and physiological and biochemical features of fungi and fungus-like protists of Vietnam [AAAA-A19-119080990059-1]
- Joint Vietnam-Russian Tropical Research and Technological Centre (Severtsov Institute of Ecology and Evolution RAS, the program Ecolan-1.2)
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In this study, we examined the lipid composition of two strains of the tropical basidiomycete Favolaschia manipularis (Berk.) Teng, which differ in their adaptive potential to high (35 degrees C) and low (5 degrees C) temperatures. The results suggest that adaptation to extreme temperatures involves a change in the molecular composition of sterols, in addition to other well-known mechanisms of regulating membrane thickness and fluidity, such as changes in the lipid unsaturation and in the proportion of bilayer- and non-bilayer-forming lipids. It was demonstrated for the first time that adaptation to high temperature stress in fungi is accompanied by the accumulation of 9(11)-dehydroergosterol and ergosterol peroxide. Furthermore, increased thermal plasticity correlates with high storage lipid (triglycerides) content, accumulation of phosphatidic acid in the membrane, and an equal proportion of bilayer and non-bilayer lipids in the membrane.
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