Fig. 2From: Development of a powerful synthetic hybrid promoter to improve the cellulase system of Trichoderma reesei for efficient saccharification of corncob residuesIdentification of the truncated fragments of Pcdna1 fused with cbh1 as the reporter gene. a Strategy of targeted replacement of Pcbh1 with the truncated fragments of Pcdna1 fused with cbh1. b, c CBH activity of the transformants PD1-1 (Pcdna1-1), PD1-2 (Pcdna1-2), PD1-3 (Pcdna1-3), PD1-4 (Pcdna1-4), PD1-5 (Pcdna1-5) and the parental strain QM53 (control) cultured in GMM for 5 days (b) and AMM for 7 days (c). Data indicates the mean of three independent experiments; error bars express the standard deviations. Different lowercase letters above the bars indicate significant differences at P < 0.05Back to article page