Catalase activity in fresh conidiospores. Catalase activity was determined in a suspension of freshly harvested conidiospores by an assay provided in Worthington Enzyme Manual as described in Methods. ). The experiment was performed 3–4 times. The activity was expressed in micromoles H2O2 degraded per min per 104 spores at 25 °C and pH 7.0, and presented as Mean ± SE. ND not detected. *, statistically significant difference as compared to SU-1, p = 0.0002. Statistical analysis was performed by Student’s t-test using SigmaStat 1.0).