A new Zn(II)2Cys6-type transcription factor BglR regulates β-glucosidase expression in Trichoderma reesei

► BglR was identified as a new Zn(II)2Cys6 type transcription factor in Trichoderma reesei. ► BglR was discovered based on a comparative genomic analysis undertaken to verify SNPs between T. reesei mutants. ► Mutants without SNP in BglR failed to exhibit elevated cellulase production during growth on cellobiose. ► BglR up-regulates expression of genes encoding specific β-glucosidases.