Fold changes of relative expression of hydrophobin transcripts.

(A) Mycelium grown on soil (substrate mycelium), immersed and floating mycelium compared to solid medium. (B) Liquid culture treated with root exudates of P. abies or P. sylvestris, and (C) with ethanol (EtOH) and indole-3-acetic acid (IAA) both compared with non-treated liquid culture. (D) Response to volatiles from mycelia grown on solid medium, next to roots of P. abies or P. sylvestris, and (E) in ectomycorrhiza with P. abies or P. sylvestris both compared to a control on solid medium. (F) Fruiting bodies compared to artificial medium and soil. Bars denote standard error, significance level * P < 0.05, ** P < 0.005, *** P < 0.005.