HPGDS and infection: Among the genes associated with secondary metabolite and mycotoxin biosynthesis, the oxidase gene ustYa, a Tat pathway signal sequence-containing gene, a flavin-binding monooxygenase gene, a glutathione S-transferase gene and siderophore transporter genes were upregulated in WT in vivo relative to WT in vitro and downregulated in Δpks15 in vivo relative to WT in vivo, particularly during the early stages of infection.