Biochemistry (Moscow)

, Volume 71, Issue 9, pp 1013–1020

Effect of hydrogen peroxide on antioxidant enzyme activities in Saccharomyces cerevisiae is strain-specific

Article

DOI: 10.1134/S0006297906090100

Cite this article as:
Bayliak, M., Semchyshyn, H. & Lushchak, V. Biochemistry (Moscow) (2006) 71: 1013. doi:10.1134/S0006297906090100

Abstract

The effect of hydrogen peroxide on the survival and activity of antioxidant and associated enzymes in Saccharomyces cerevisiae has been studied. A difference found in the response of wild-type yeast strains treated with hydrogen peroxide was probably related to the different protective effects of antioxidant enzymes in these strains. Exposure of wild-type YPH250 cells to 0.25 mM H2O2 for 30 min increased activities of catalase and superoxide dismutase (SOD) by 3.4-and 2-fold, respectively. However, no activation of catalase in the EG103 strain, as well as of SOD in the YPH98 and EG103 wild strains was detected, which was in parallel to lower survival of these strains under oxidative stress. There is a strong positive correlation (R2 = 0.95) between activities of catalase and SOD in YPH250 cells treated with different concentrations of hydrogen peroxide. It is conceivable that catalase would protect SOD against inactivation caused by oxidative stress and vice versa. Finally, yeast cell treatment with hydrogen peroxide can lead to either a H2O2-induced increase in activities of antioxidant and associated enzymes or their decrease depending on the H2O2 concentration used or the yeast strain specificity.

Key words

Saccharomyces cerevisiae hydrogen peroxide catalase superoxide dismutase 

Abbreviations

G6PDH

glucose-6-phosphate dehydrogenase

GR

glutathione reductase

ICDH

isocitrate dehydrogenase

SOD

superoxide dismutase

Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  1. 1.Department of BiochemistryVassyl Stefanyk Precarpathian National UniversityIvano-FrankivskUkraine

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