Transcription factor involved in regulation of the gene cluster that mediates the biosynthesis of cladofulvin, a conidial pigment not required for virulence but that plays a role in fitness and resistance to environmental stresses including UV light and low-temperature stress. Expression is positively regulated by the transcriptional regulator wor1 (PubMed:27274078). Expression is down-regulated during biotrophic growth within tomato leaves (PubMed:27997759).