Gnotobiotic assay of fly survivals
(A and B) Survival of the 2-DPE axenic flies infected by B. bassiana (Bb, A) and M. robertsii (Mr, B) with and without the addition of L. plantarum (Lp) cells.
(C and D) Survival of the 2-DPE axenic flies untreated and pre-treated with the Lp cells for the topical infection of B. bassiana (C) and M. robertsii (D). The sterile flies were treated with the cells of Lp for 24 h before the fungal topical infections. The germ-free flies only treated with 0.05% Tween 20 and Lp cells were included as mock controls. Plotted values are represented as mean ± SEM. More than 70 flies were used for each treatment and the experiments were repeated twice. (See also Figures S2 and S3).