Figure 3.
Autophagy is required for extension of life span during CR. A. CLS was measured in WT, atg1Δ, atg2Δ, atg7Δ, atg8Δ, and atg11Δ strains following growth in standard minimal medium containing 2% glucose. Cell viability in CFU/mL is expressed as the log of the percentage of the number of viable cells on day 1 and is plotted as a function of time in days. B. CLS during water wash CR following growth in 2% glucose minimal medium as described in Fig. 2. C. CLS during low glucose CR following growth in minimal medium containing 0.4% glucose. D. Combination of low glucose CR and water wash CR. Yeast strains were grown in minimal medium containing 0.4% glucose followed by water washing beginning on day 3 as described in Fig. 2. E-H. The percentages of petite colonies for panels A-D, respectively, are plotted as described in Fig. 2.