As an efficient fungi of secreting cellulase,Trichoderma orientalis EU7-22 has an important value in the degradation of biomass.The bglr gene as well as the upstream and downstream sequences were cloned in EU7-22 using thermal asymmetric interlaced PCR according to the conserved sequence.Compared to the parent strain,theΔbglr knockout mutant constructed by homologous recombination showed that the enzyme activities(FPase,exoglucanase,xylanase)and the highest extracellular protein concentration increased by 3...