Gene expression of the Trichoderma/Hypocrea hydrophobins. (A) Number of ESTs found for the respective hfb genes during screening of the TrichoEST database. Species are abbreviated as follows: TL, T. longibrachiatum; TA, T. asperellum, HL, H. lixii; TAE, T. aggressivum var. europeae; TS, T. stromaticum; TCK, T. cf. koningiopsis. Strain numbers are given in the legend to Table 2. Individual hydrophobin genes are indicated by their respective numbers (cf. Table 1), and no number is given for species in which only a single hydrophobin gene has been detected. (B) Expression of the H. atroviridis gene members of the "HFB4" clade. SM, submerged cultivation; SF, surface cultivation. "5×" indicates that the 5-fold amount of PCR product had been loaded onto the gel.