Transcription factor that regulates the expression of the gene cluster that mediates the biosynthesis of trichosetin, a trans-fused decalin-containing tetramic acid with antimicrobial activity (PubMed:28379186). Plays a specific role in the induction of the cluster-specific MFS transporter MFS-T and thus regulates the detoxification of the toxic trichosetin in Gibberella fujikuroi cells (PubMed:28379186). Expression is induced by the final product trichosetin and not by the trichosetin cluster-specific transcription acticator TF22 (PubMed:28379186). Resulted in the down-regulation of the three biosynthetic genes from the trisetin cluster and a reduced accumulation of trichosetin, and blocks the expression of the cluster-specific MFS transporter MFS-T (PubMed:28379186).