Fig. 2

Sensitivities of B. bassiana wild type and the mutant strains to H₂O₂ and menadione (MND). A Vegetative growth of indicated B. bassiana strains on ¼ SDAY and ¼ SDAY containing 4 mM H₂O₂ or 60 μM MND for 7 days. B Calculated relative growth inhibition (RGI) of B. bassiana strains challenged with oxidative stressors for 7 days. RGI was calculated as described in “Methods” section. C Conidial germination on ¼ SDAY and ¼ SDAY containing 4 mM H₂O₂ or 60 μM MND for 24 h. Scale bar = 10 μm. D The dose for inhibiting 50% conidial viability (IC₅₀) of H₂O₂ and menadione. IC₅₀ was calculated using the probit regression model and the SPSS 17.0 program. Standard deviations (± SD) of data derived from triplicate experiments are shown in B and D. The asterisks (**) in the column charts denote P < 0.01 for the indicated fungal strains versus the WT (t-test), respectively