FIG. 6.

Reducing ROS in the GS129 mutant restores stationary-phase respiration. (A) Oxygen consumption of wild-type (WT) and GS129 cultures containing an empty vector or a plasmid carrying either SOD1 or SOD2 at day 1 of stationary phase. Results are plotted as described in the legend to Fig. 2; all measurements were performed in triplicate and were normalized for differences in OD, with the wild type set to 1. (B) Oxygen consumption of day 2 stationary-phase glucose (SD) cultures of wild-type and GS129 strains containing either an empty vector (+vector) or a plasmid that overexpresses MSN4.