Reference: Rikhvanov EG, et al. (2001) [Heat shock-induced changes in the respiration of the yeast Saccharomyces cerevisiae]. Mikrobiologiia 70(4):531-5

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Abstract


The incubation of Saccharomyces cerevisiae at elevated temperature (45 degrees C) stimulated the respiration of yeast cells and decreased their survival rate. The respiration-deficient mutant of this yeast was found to be more tolerant to the elevated temperature than the wild-type strain. At the same time, the cultivation of the wild-type strain in an ethanol-containing medium enhanced the respiration, catalase activity, and thermotolerance of yeast cells, as compared with their growth in a glucose-containing medium. It is suggested that the enhanced respiration of yeast cells at 45 degrees C leads to an intense accumulation of reactive oxygen species, which may be one of the reasons for the heat shock-induced cell death.

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Journal Article
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Rikhvanov EG, Varakina NN, Rusaleva TM, Rachenko EI, Kiseleva VA, Voĭnikov VK
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