Different mechanisms of the biochemical adaptation of mycelial fungi to temperature stress: Changes in the lipid composition |
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| Authors: | E P Feofilova V M Tereshina A S Memorskaya N S Khokhlova |
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| Institution: | (1) Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, 117811 Moscow, Russia |
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| Abstract: | A comparative study was conducted concerning the effect of temperature stress on the lipid composition of representatives
of the subkingdomsEomycota andNeomycota. Changes in the composition of lipid acyl chains (such as saturation and desaturation, isomerization, and changes in the length
of fatty acid carbon chains), in the phospholipid composition, and in the contents of sterols and other neutral lipids were
revealed. Hyperthermia resulted in (i) an increase in the phosphatidylcholine level, (ii) a decrease in the phosphatidylethanolamine
level, (iii) a rise in the content of reserve lipids (triacylglycerols), and (iv) a decline in the free fatty acid level in
the neutral lipids. An inverse pattern occurred under hypothermic conditions. The peculiarities in the patterns of the temperature
adaptation-related changes in the lipid bilayer composition are considered in terms of the systematic position of the fungi. |
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| Keywords: | mycelial fungi temperature shock lipids |
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