Background:The molecular mechanism underlying the regulation of cellulase production by T. reesei is unclear. Results: The absence of sugar transporter Stp1 enhanced cellulase gene induction whereas the absence of Crt1 abolished cellulase gene expression. Conclusion: Crt1 is essential in cellulase gene induction independent of intracellular sugar delivery. Significance: These data shed light on the mechanism by which T. reesei senses and transmits cellulose signal.
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