Fig. 4

Comparison of transcript levels of main cellulase, xylanase, and transcription factors genes in DBD_ace2-VP16 transformants. Gene expression ratios (-fold) in DBD_ace2-VP16 transformants relative to RUT C30 on 2% avicel (a) and lactose (b) for 12 and 24 h after a shift from glucose. Gene expression ratios (-fold) were normalized to the corresponding gene expression at the same timepoint in the parental strain RUT C30. Values represent the mean of three biological replicates and error bars show the standard deviation; asterisks indicate significant differences (gene expression ratio greater than twofold or less than 0.5-fold between the transformants and the parental strain RUT C30)