Figure 3.

Effect of T. virens T49, T. longibrachiatum T68, T spirale T75 and T. harzianum T115 treatments from 4-days PDB and PDB-tryptophan (Trp) cultures on H₂O₂ content in wheat plant leaf grown under optimal irrigation and water stress (1/3 of the watering applied during the third and fourth weeks) conditions. Values are expressed in μmoles of H₂O₂ per g of leaf fresh weight (FW). Data are calculated from n = 4 replicates for each strain, culture medium and plant growth condition. For each fungal culture medium and plant growth conditions, different letters above the bars indicate significant differences according to one-way analysis of variance (ANOVA) followed by Tukey’s test at the 0.05 alpha-level of confidence.