Publication

Autophagy Deficiency Promotes β-Lactam Production in Penicillium chrysogenum

Bartosweska, M., Kiel, J. A. K. W., Bovenberg, R. A. L., Veenhuis, M. & van der Klei, I. J., Feb-2011, In : Applied and environmental microbiology. 77, 4, p. 1413-1422 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

Copy link to clipboard

Documents

  • Autophagy Deficiency Promotes β-Lactam Production

    Final publisher's version, 2 MB, PDF document

    Request copy

DOI

We have investigated the significance of autophagy in the production of the β-lactam antibiotic penicillin (PEN) by the filamentous fungus Penicillium chrysogenum. In this fungus PEN production is compartmentalized in the cytosol and in peroxisomes. We demonstrate that under PEN-producing conditions significant amounts of cytosolic and peroxisomal proteins are degraded via autophagy. Morphological analysis, based on electron and fluorescence microscopy, revealed that this phenomenon might contribute to progressive deterioration of late subapical cells. We show that deletion of the P. chrysogenum ortholog of Saccharomyces cerevisiae serine-threonine kinase atg1 results in impairment of autophagy. In P. chrysogenum atg1 cells, a distinct delay in cell degeneration is observed relative to wild-type cells. This phenomenon is associated with an increase in the enzyme levels of the PEN biosynthetic pathway and enhanced production levels of this antibacterial compound.
Original languageEnglish
Pages (from-to)1413-1422
Number of pages10
JournalApplied and environmental microbiology
Volume77
Issue number4
Publication statusPublished - Feb-2011

    Keywords

  • CELL-DEATH, HANSENULA-POLYMORPHA, FILAMENTOUS FUNGI, PEROXISOME BIOGENESIS, FUNCTIONAL-ANALYSIS, MAGNAPORTHE-GRISEA, ASPERGILLUS-ORYZAE, BIOSYNTHESIS, GENE, DEGRADATION

ID: 2044334