Fig 2. Spt20 plays a role in growth and aging under winemaking conditions.

A) Growth curves for wine strain L2056 and its derivatives spt20Δ and ubp8Δ showing the number of viable cells (cfu/mL) determined by plate counting at different times during winemaking in natural grape juice. Experiments were performed at least in triplicate, and errors bars show the standard deviation (SD). B) Survival curves for the same strains. The cell numbers at day 3 in panel A were taken as 100% viability. C) Sugar consumption profiles during fermentation. D) Ethanol production at the end of grape juice fermentation. Ethanol was measured when sugars were completely consumed (below 2 g/l).