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. 2017 Dec 11;7:17346. doi: 10.1038/s41598-017-17439-2

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Deletion of mat1-2-1 leads to down-regulation of cellulase gene expression on cellulose in light but not in darkness. (A and B) pNPC and pNPG hydrolytic activities of the extracellular supernatant of the Δmat1-2-1 and TU6-RP strains. (C to E) Relative expression levels of cbh1 (C), eg1 (D) and xyr1 (E) in these two strains cultured under the same conditions for enzymatic activity analyses were assayed by RT-qPCR. Error bars indicated the standard error (SE) from three independent biological replicates. Significant differences (T-test *P < 0.05, **P < 0.01) were detected for the extracellular activities and the transcription of the cbh1, egl1 and xyr1 genes between TU6-RP and the Δmat1-2-1 strain for the indicated time points after induction.