Figure 9.

Effect of heat treatment on spores of deletion mutant strains. Spore suspensions of S. coelicolor M145 and the deletion strains K300 (∆SCO1774-1773), K301 (∆SCO1773), K302 (∆SCO3857), K303 (∆SCO4157), K316 (∆SCO0934), K317 (∆SCO7449-7451), K318 (∆SCO1195-1196), and K319 (∆SCO4421) were incubated at 60°C for 30 and 60 minutes. Survival rate of spores was calculated in relation to the number of viable spores in untreated samples. Average values and standard deviations of plate counts from two or three experiments are shown.