Fig. 9

Effect of osmotic, oxidative and cell wall-stress causing agents. No significant difference in the radial growth was observed in presence of glycerol, sorbitol, sodium chloride and potassium chloride between wild-type, deletion mutant K09, complementation mutant C7 and truncated mutant T10 (a). The deletion mutant demonstrated improved oxidative stress tolerance in presence of sodium nitrite (b). In presence of cell wall stress agents such as Congo red and calcofluor white the deletion mutant showed bigger radial growth as compared to its counterparts in presence of calcofluor white (c). Dunnett’s multiple comparisons test was performed to determine the significant difference between the wild-type and mutant strains (** P < 0.01, * P < 0.05)