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Two-way analysis of variance (anova) was performed on data where treatment and time were variables, and mean separation was determined for NSA http://www.selleckchem.com/products/SB-431542.html and SA samples at each time point using a Student's t-test. Data with a single variable (treatment) were analyzed by one-way anova, and mean separations were performed by Duncan's multiple range tests. Differences at P? http://www.selleckchem.com/products/byl719.html exhibited intermediate levels of survival in 50?mM H2O2 at all treatment time points. Similar to the trend in viability under oxidative stress, the survival of C.?oleophila decreased with exposure to increasing temperature (39�C41?��C) and exposure time (Table?3). Based on the results of the viability assays, 50?mM H2O2 and 40?��C were chosen to be appropriate conditions for assessing the ability of mild oxidative stress treatment to improve tolerance to a subsequent oxidative stress or high temperature. Pretreatment of yeast cells with a mild oxidative stress of 5?mM H2O2 for 30?min had a significant effect on C. oleophila viability when yeast cells were exposed to a subsequent oxidative or heat stress (P? http://www.selleck.cn/products/ipi-145-ink1197.html cells was 77.2%, while that of SA cells was 93.2%. A similar pattern of viability was observed in response to heat stress (Fig.?1b). While the viability of cells decreased over time in response to exposure to 40?��C, SA cells exhibited significantly improved tolerance to the heat stress at all time periods assessed. Sublethal oxidative stress did not significantly increase ROS accumulation in C.?oleophila cells (Fig.?1c and d). At time 0, prior to subsequent treatments at 50?mM H2O2 or 40?��C, the percentage of both SA and NSA cells exhibiting a visible ROS level, as determined by use of the fluorescent dye H2DCFDA, was