| Summary: | 碩士 === 國立中山大學 === 生物科學系研究所 === 96 === Wild type strain (WT) and YDL100c disrupted strain (KO) were grown at 30oC for 8 hr after adding 50 μM menadione. Cells of both strains were assayed for trehalose accumulation, intracellular molecular oxidation level, membrane lipid oxidation, and glutathione (GSH) content. The data showed both the molecular and membrane lipid oxidation levels are higher and the GSH content is lower in KO compared with WT in the presence of menadione. The catalase activity in KO strain are reduced than that in WT strain, catalase activity would affect in the presence of menadione. Further study of antioxidant gene expressions showed that TPS1 and CTT1 were involved in the general stress response；SOD1, GSH1, TRR1 and TRX2 were involved in the specific stress response. Above mentioned mRNA level were reduced, suggesting that the deletion of YDL100c in S. cerevisiae affects the operation of general and specific stress response when grown in the presence of menadione.
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