Measurement of B . cinerea necrotic lesions on detached leaves of A. thaliana plants. The leaves were inoculated with C. rosea strains 30 minute before application of B. cinerea and allowed to interact for 56 h. Only pathogen inoculated leaves were used as control. Necrotic lesion area was measured under the microscope using DeltaPix camera and software. Error bars represent standard deviation based on 3 biological replicates. Different letters indicate statistically significant differences (P ≤ 0.05) within experiments based on the Tukey-Kramer test.