文献类型：期刊文献

英文题名：N,N-dimethylformamide induces cellulase production in the filamentous fungus Trichoderma reesei

作者：Chen, Yumeng[1];Wu, Chuan[1];Shen, Yaling[1];Ma, Yushu[1];Wei, Dongzhi[1];Wang, Wei[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd,POB 311, Shanghai 200237, Peoples R China

年份：2019

卷号：12

期号：1

外文期刊名：BIOTECHNOLOGY FOR BIOFUELS

收录：;EI(收录号：20190906544706);WOS:【SCI-EXPANDED(收录号:WOS:000459399800001)】；

基金：This research was supported by the National Natural Science Foundation of China [No. C010302-31500066].

语种：英文

外文关键词：Trichoderma reesei; DMF induced; Cellulase; Calcium signaling; Permeability; Phospholipase C; plc-e

摘要：BackgroundThe filamentous fungus Trichoderma reesei produces cellulase enzymes that are widely studied for lignocellulose bioconversion to biofuel. N,N-dimethylformamide (DMF) is a versatile organic solvent used in large quantities in industries.ResultsIn this study, we serendipitously found that biologically relevant concentrations of extracellular DMF-induced cellulase production in the T. reesei hyper-cellulolytic mutant Rut-C30 and wild-type strain QM6a. Next, by transcriptome analysis, we determined that plc-e encoding phospholipase C was activated by DMF and revealed that cytosolic Ca2+ plays a vital role in the response of T. reesei to DMF. Using EGTA (a putative extracellular Ca2+ chelator) and LaCl3 (a plasma membrane Ca2+ channel blocker), we demonstrated that DMF induced a cytosolic Ca2+ burst via extracellular Ca2+ and Ca2+ channels in T. reesei, and that the cytosolic Ca2+ burst induced by DMF-mediated overexpression of cellulase through calcium signaling. Deletion of crz1 confirmed that calcium signaling plays a dominant role in DMF-induced cellulase production. Additionally, 0.5-2% DMF increases the permeability of T. reesei mycelia for cellulase release. Simultaneous supplementation with 1% DMF and 10mM Mn2+ to T. reesei Rut-C30 increased cellulase activity approximately fourfold compared to that without treatment and was also more than that observed in response to either treatment alone.ConclusionsOur results reveal that DMF-induced cellulase production via calcium signaling and permeabilization. Our results also provide insight into the role of calcium signaling in enzyme production for enhanced cellulase production and the development of novel inducers of cellulase.