The role of glutathione in yeast dehydration tolerance.
Among the factors that affect cell resistance against dehydration, oxidation is considered to be of great importance. In this work, we verified that both control and glutathione deficient mutant strains were much more oxidized after dehydration. Moreover, cells lacking glutathione showed a twofold higher increase in oxidation and lipid peroxidation than the control strain. While glucose 6-phosphate dehydrogenase and glutathione reductase activities did not change in response to dehydration in the control strain, the mutant strain gsh1 (glutathione deficient) showed a reduction of 50% in both activities, which could explain the high levels of oxidation shown by gsh1 cells. In conformity with these results, the mutant lacking GSH1 showed a high sensitivity to dehydration. Furthermore, the addition of glutathione to gsh1 cells restored survival rates to the levels of the control strain. We conclude that glutathione plays a significant role in the maintenance of intracellular redox balance during dehydration.[1]References
- The role of glutathione in yeast dehydration tolerance. Espindola, A.d.e. .S., Gomes, D.S., Panek, A.D., Eleutherio, E.C. Cryobiology (2003) [Pubmed]
Annotations and hyperlinks in this abstract are from individual authors of WikiGenes or automatically generated by the WikiGenes Data Mining Engine. The abstract is from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.About WikiGenesOpen Access LicencePrivacy PolicyTerms of Useapsburg
