CYP51A1 and infection: Conversely, five genes involved in late ergosterol biosynthesis, CYP51/sterol-14α-demethylase (ERG11), C-4 methylsterol oxidase (ERG25), sterol 24-C-methyltransferase (ERG6), C-8 sterol isomerase (ERG2) and δ7-sterol 5-desaturase (ERG3), were expressed at lower levels during infection of P. tecunumanii than P. patula at 7-dpi (Figure 1).