Transcription factor that regulates asexual reproduction (PubMed:15590816). Binds the StuA-response elements (StRE) with the consensus sequence 5'-(A/T)CGCG(T/A)N(A/C)-3' at the promoters of target genes (By similarity). Differentially regulates the development of macroconidia, microconidia, and chlamydospores (PubMed:15590816). Acts as a positive regulator for the development of macroconidia and as a negative regulator for the development of chlamydospores (PubMed:15590816). Involved in microconidium formation specifically in infected plants (PubMed:15590816). Lacks conidiophores and produces macroconidia at low frequencies only from intercalary phialides (PubMed:15590816). Produces markedly fewer macroconidia and microconidia in infected plants but does not affect the disease-causing ability (PubMed:15590816). Belongs to the EFG1/PHD1/stuA family.