Real-time quantitative analysis of the influence of blue light on citrinin biosynthetic gene cluster expression in Monascus

Biotechnol Lett. 2012 Sep;34(9):1745-8. doi: 10.1007/s10529-012-0962-z. Epub 2012 May 25.

Abstract

When Monascus MX was grown under blue light instead of in the dark, citrinin production increased from 478 mg l(-1) to 698 mg l(-1). To explain this, the expression of the pksCT gene, which encodes citrinin polyketide synthase, and of 5 ORFs around it, were monitored. Blue light enhanced citrinin production by upregulating the expression of orf1, orf3, and orf4, indicating that pksCT was not the key gene responsible for the quantity of citrinin production in blue light.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biosynthetic Pathways / genetics*
  • Citrinin / biosynthesis*
  • Gene Expression Profiling
  • Gene Expression Regulation, Fungal / radiation effects*
  • Genes, Fungal
  • Light*
  • Monascus / genetics*
  • Monascus / radiation effects*
  • Multigene Family
  • Real-Time Polymerase Chain Reaction
  • Up-Regulation

Substances

  • Citrinin