Figure 1SAGA is epistatic to the TORC1 and TORC2 pathways in the regulation of differentiation in response to nutrient availability. (A,B,D,E) Expression of ste11+ (A,D) using quantitative RT-PCR of RNA extracted from cells grown either in nutrient rich medium (dark gray) or shifted for 4 hours to starvation medium (light grey). Cells of the following genotypes were analyzed: wild-type isogenic controls (WT), gcn5Η, tsc1Η, gcn5Η tsc1Η, tsc2Η, gcn5Η tsc2Η, rhb1-DA4 - a constitutively active (CA) rhb1 mutant [34], gcn5Η rhb1-DA4, tor2-L1310P - a CA tor2 mutant [33], gcn5Η tor2-L1310P, tor1Η, gcn5Η tor1Η, gad8Η, and gcn5Η gad8Η. act1+ served as a control for normalization across samples. Values from a WT strain grown in rich medium were set at 1 to allow comparisons across culture conditions and mutant strains. Each column represents the mean value of 4 (A,B)independent experiments, overlaid with individual data points and standard error (SE) bars. Statistical significance was determined by 2-way ANOVA followed by Bonferroni's multiple comparison tests (n = 4 for A,B)SAGA is epistatic to the TORC1 and TORC2 pathways in the regulation of differentiation in response to nutrient availability. (A,B,D,E) Expression of mei2+ (B,E) using quantitative RT-PCR of RNA extracted from cells grown either in nutrient rich medium (dark gray) or shifted for 4 hours to starvation medium (light grey). Cells of the following genotypes were analyzed: wild-type isogenic controls (WT), gcn5Η, tsc1Η, gcn5Η tsc1Η, tsc2Η, gcn5Η tsc2Η, rhb1-DA4 - a constitutively active (CA) rhb1 mutant [34], gcn5Η rhb1-DA4, tor2-L1310P - a CA tor2 mutant [33], gcn5Η tor2-L1310P, tor1Η, gcn5Η tor1Η, gad8Η, and gcn5Η gad8Η. act1+ served as a control for normalization across samples. Values from a WT strain grown in rich medium were set at 1 to allow comparisons across culture conditions and mutant strains. Each column represents the mean value of 4 (A,B) independent experiments, overlaid with individual data points and standard error (SE) bars. Statistical significance was determined by 2-way ANOVA followed by Bonferroni's multiple comparison tests (n = 4 for A,B)(C,F) Cells were grown to mid-log phase either in rich medium or shifted for 8 hours to starvation medium. Zygotes and tetrads, which correspond to differentiated cells, were counted under a light microscope. Cells of the following genotypes were analyzed: WT isogenic controls, gcn5Η, tsc1Η, gcn5Η tsc1Η, rhb1-DA4, gcn5Η rhb1-DA4, gad8Η, and gcn5Η gad8Η. Each value represents the mean percentage and SE of differentiating cells to the total number of cells, averaged from 4 independent experiments. At least 200 cells from the indicated genotypes were counted in each experiment. White arrowheads indicate zygotes. Scale bar, 10 μm.SAGA is epistatic to the TORC1 and TORC2 pathways in the regulation of differentiation in response to nutrient availability. (A,B,D,E) Expression of ste11+ (A,D) using quantitative RT-PCR of RNA extracted from cells grown either in nutrient rich medium (dark gray) or shifted for 4 hours to starvation medium (light grey). Cells of the following genotypes were analyzed: wild-type isogenic controls (WT), gcn5Η, tsc1Η, gcn5Η tsc1Η, tsc2Η, gcn5Η tsc2Η, rhb1-DA4 - a constitutively active (CA) rhb1 mutant [34], gcn5Η rhb1-DA4, tor2-L1310P - a CA tor2 mutant [33], gcn5Η tor2-L1310P, tor1Η, gcn5Η tor1Η, gad8Η, and gcn5Η gad8Η. act1+ served as a control for normalization across samples. Values from a WT strain grown in rich medium were set at 1 to allow comparisons across culture conditions and mutant strains. Each column represents the mean value of 3 (D,E) independent experiments, overlaid with individual data points and standard error (SE) bars. Statistical significance was determined by 2-way ANOVA followed by Bonferroni's multiple comparison tests (n = 3 for D,E).SAGA is epistatic to the TORC1 and TORC2 pathways in the regulation of differentiation in response to nutrient availability. (A,B,D,E) Expression of mei2+ (B,E) using quantitative RT-PCR of RNA extracted from cells grown either in nutrient rich medium (dark gray) or shifted for 4 hours to starvation medium (light grey). Cells of the following genotypes were analyzed: wild-type isogenic controls (WT), gcn5Η, tsc1Η, gcn5Η tsc1Η, tsc2Η, gcn5Η tsc2Η, rhb1-DA4 - a constitutively active (CA) rhb1 mutant [34], gcn5Η rhb1-DA4, tor2-L1310P - a CA tor2 mutant [33], gcn5Η tor2-L1310P, tor1Η, gcn5Η tor1Η, gad8Η, and gcn5Η gad8Η. act1+ served as a control for normalization across samples. Values from a WT strain grown in rich medium were set at 1 to allow comparisons across culture conditions and mutant strains. Each column represents the mean value of 3 (D,E) independent experiments, overlaid with individual data points and standard error (SE) bars. Statistical significance was determined by 2-way ANOVA followed by Bonferroni's multiple comparison tests (n = 3 for D,E).(C,F) Cells were grown to mid-log phase either in rich medium or shifted for 8 hours to starvation medium. Zygotes and tetrads, which correspond to differentiated cells, were counted under a light microscope. Cells of the following genotypes were analyzed: WT isogenic controls, gcn5Η, tsc1Η, gcn5Η tsc1Η, rhb1-DA4, gcn5Η rhb1-DA4, gad8Η, and gcn5Η gad8Η. Each value represents the mean percentage and SE of differentiating cells to the total number of cells, averaged from 4 independent experiments. At least 200 cells from the indicated genotypes were counted in each experiment. White arrowheads indicate zygotes. Scale bar, 10 μm.