PPIG and infection: On the other hand, CYP-encoding genes ppoA, ppoB, and ppoC in the monomorphic fungal pathogen Aspergillus fumigatus regulate the synthesis of oxylipins from polyunsaturated fatty acids, which have been shown to regulate the balance between asexual and sexual development and fatty acid regulation and to influence microbe-host interactions during infection (6, –, 9).