Bioprotection effect of Trichoderma strains on wheat plant infested by F. culmorum (Fc). (a) Percentage of germination and fresh seedling weight, and (b) aerial section and root lengths, 7 days post-germination in an axenic environment. (c) General morphological aspect of plant co-inoculated by protagonists, and (d) percentage of plant survival 21 days post germination. C, sterile PDB control. Scale bars in photographs represent 10 cm. (a,b) correspond to the mean of thirteen plants; (d) corresponds to the mean of six biological repetitions, including ten plants. Letters in the same column describe levels of statistical significance (p ≤ 0.05); values are means ± SE. Disease symptoms related to virulence of F. culmorum are presented with more resolution and details in Figures S4 and S5 in Supplementary Materials.