Figure 4. Relative lifespan extension by inactivation of Swr1 is partially abolished under dietary restriction.

Bars show the relative lifespan effects (L−1) for mutant strains aged in competition against the WT in glutamine (rich nitrogen, blue bars) or GABA (poor nitrogen, orange bars) aging medium. Error bars indicate the standard error from at least three independent experiments. Box plot (inset) shows the absolute half life measurements of individual WT cultures aged under glutamine or GABA (n = 28).