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  • Title: Effects of the Transcription Factor Ace2 from Trichoderma reesei on Cellulase and Hemicellulase Expression in Trichoderma orientalis EU7-22.
    Author: Li Y, Xue Y, Liu J, Gan L, Long M.
    Journal: Appl Biochem Biotechnol; 2021 Jul; 193(7):2098-2109. PubMed ID: 33608806.
    Abstract:
    Trichoderma orientalis (T. orientalis) EU7-22 has a complete cellulase system and shows a remarkable enzyme activity with high potential in the industry. Ace2 is an important transcriptional factor for cellulase and hemicellulase expression in Trichoderma reesei (T. reesei). However, the ace2 gene cannot be found in the genome of T. orientalis. Researches show that the mechanism of cellulase transcriptional regulation in T. orientalis keeps high similarity with T. reesei up till now. So, in this study, the ace2 of Trichoderma reesei QM9414 was heterologous expressed in T. orientalis EU7-22. As a result, xylanase activity and β-glucosidase activity of ace2 heterogeneous expression strains are improved and total cellulase activity is decreased. The result of qPCR is in accordance with enzyme activities. This study provides a reference for an in-depth study on transcriptional regulation mechanisms of T. orientalis.
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