(A) PCA score plots between fungal samples during the saprophytic and pathogenic phases of growth on two different media, CMA and PDA (principal component 1 versus principal component 2; component 1, 0.85; component 2, 0.05); (B) PCA score plots between fungal samples during the saprophytic and pathogenic phases of growth on two different media, CMA and PDA (principal component 1 versus principal component 3; component 1, 0.85; component 2, 0.05; component 3, 0.03); (C) PCA score plot between the saprophytic and pathogenic fungal samples grown on CMA (principal component 2 versus principal component 3; component 1, 0.60; component 2, 0.12; component 3, 0.07); (D) PCA score plot between the saprophytic and pathogenic fungal samples grown on PDA (principal component 2 versus principal component 3; component 1, 0.65; component 2, 0.11; component 3, 0.08). C, A. oligospora growing without nematodes over 144 h as the control group; DC, A. oligospora growing under direct contact with living nematodes over 144 h; NDC-L, A. oligospora growing under nondirect contact with live nematodes over 144 h; NDC-D, A. oligospora growing under nondirect contact with dead nematodes over 144 h.