Growth of the strains IMI088 (overexpressing YLR224W) (●) and CEN.PK113-7D (□) in the presence of n- butanol. A: Growth rate in synthetic medium containing n-butanol concentrations ranging from 1% to 1.7%. The data represent the average apparent growth rate μ (h-1) and standard deviation of a minimum of four independent cultures. B: Growth in the presence of 1.33% n-butanol. The values correspond to the average final OD660 of three independent cultures and the standard deviation of replicate cultures.