Figure 1.

Effect of Trichoderma on Arabidopsis growth. Photographs of 10-d-old Arabidopsis (Col-0) seedlings grown on the surface of agar plates containing 0.2x MS medium. (A) Seedlings were treated with sterilized distilled water at day 4 and photographed 6 d later. Bar = 5 mm. (B) Representative photograph of Arabidopsis seedlings that were inoculated with T. virens at a distance of 5 cm from the root tip 4 d after germination and grown for a further 6 d period. (C) Photograph of Arabidopsis seedlings inoculated with T. atroviride at a distance of 5 cm from the root tip at 4 d after germination and grown for a further 6-d period. (D) Effects of Trichoderma on Arabidopsis biomass production. Mean ± SD values were plotted at the indicated days in the kinetic experiment (n = 30). The experiment was repeated twice with similar results.