Transcription factor that specifically regulates the expression of the gene cluster that mediates the biosynthesis of aurofusarin, a red mycelium pigment which is acting as a mycotoxin (PubMed:15809006, PubMed:16879655, PubMed:16461721). Expression correlates with aurofusarin production and is restricted to vegetative mycelia (PubMed:16461721). Expression is negatively regulated by the MAPK-mediated osmotic stress-signaling pathway (PubMed:17897620). Leads to an albinos phenotype (PubMed:16879655). Inactivates the expression of the aurofusarin biosynthetic gene cluster (PubMed:16879655, PubMed:16461721).