Improved cellulase production via disruption of PDE01641 in cellulolytic fungus Penicillium decumbens

Yanmei Zhang, Jiwei Zhang, Peng Xiao, Tianhong Wang, Yinbo Qu

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


To investigate the function of PDE01641, the homologue of Neurospora crassa NCU05137, during cellulase production in Penicillium decumbens, the PDE01641 encoding gene was knocked out in the present work. The PDE01641 deletion mutant showed enhanced cellobiohydrolase activity and β-glucosidase activity compared to the parental strain 114-2. Increased transcription of the main cellulase and hemicellulase genes in Δ. PDE01641 gave evidence that PDE01641 might affect the process associated with the regulation of cellulolytic enzymes expression. Furthermore, the deletion of PDE01641 from the genome of hypercellulolytic industrial strain JU-A10-T resulted in 36% and 80% increase in cellulase activity and hemicellulase activity respectively. These results revealed that PDE01641 plays an important role in the regulation of cellulolytic enzyme production in P. decumbens, and the engineering strain constructed in this work could be potentially used in bioenergy production.

Original languageEnglish (US)
Pages (from-to)733-737
Number of pages5
JournalBioresource Technology
StatePublished - Nov 2012
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the grants from the National Basic Research Program of China (No. 2011CB707403 ), the National Natural Science Foundation of China (Nos. 31030001, 30970026 and 31070036 ).


  • Cellulase
  • Gene knockout
  • PDE01641
  • Penicillium decumbens
  • Strain engineering


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