Transcription factor that is important for oxidative stress resistance and essential for gliotoxin (GT) self-protection through the regulation of a gene encoding a putative gliT homolog, even if E.nidulans does not produce gliotoxin itself. Abolishes growth in the presence of gliotoxin (PubMed:32667960). Leads to reduced growth in the presence of the oxidative stress-inducing compounds allyl alcohol, t-butyl hydroperoxide, but not menadione (PubMed:32667960).