Fig. 6

Competition experiments between T. atroviride transgenic strain ccg6_OPT-3 and E. coli. aTrichoderma transgenic line ccg6_OPT-3 was grown in competition with E. coli in modified Vogel’s minimal media supplemented with 4 mM phosphite (Phi) as the only phosphorus (P) source. E. coli and ccg6_OPT-3 monocultures were included as controls. Media without P (No P) and with phosphate (Pi) as the P source were used as controls. After 7 days of incubation glass flasks were photographed and b mycelia was harvested from the media by filtration with a sterile filter paper, and dry weight (g) determined. c CFU mL⁻¹ (× 10⁶) was determined in the filtrate as an indication of E. coli growth. Data are expressed as mean ± SE, n = 3 (p < 0.05). Different letters indicate statistical difference