Genomic integration sites influence physcion production in engineered fungi
Published in Biology, Journals.
Published October 11, 2026. A study published in Microbial Biotechnology on October 9 examines how the genomic location of introduced genes affects production of the plant-derived compound physcion in Penicillium rubens.
The researchers used a PiggyBac transposon system to generate insertion libraries, then flow cytometry to identify genomic locations associated with low or high expression. Integrating the physcion biosynthetic gene cluster at high-expression locations produced substantially more of the compound than integration at low-expression locations.
The findings support choosing integration sites deliberately when engineering filamentous fungi to manufacture secondary metabolites. They concern microbial production methods, rather than evidence that physcion treats a human disease.
Scope: This brief is based on the authors’ published abstract. It does not establish industrial-scale performance or clinical safety and efficacy.
Sources: Original paper; abstract and publication date reproduced by JoVE.