Fig. 1.

Lactobacillus plantarum^WJL (L.p.^WJL) does not directly impact Drosophila adult fitness. (A) Immediately after emergence, axenic (germ-free, GF; devoid of microbiota) adults developed on a normal diet were associated with L.p.^WJL (Lp) or sterile PBS. (B–D) When mature, they were tested for fecundity (B) or fertility (C) at 8 days of age, and for resistance to complete starvation (D) at 10 days after emergence. (E–H) Axenic eggs were inoculated with L.p.^WJL or sterile PBS and developed on a normal diet (50 g l⁻¹). The lifespan of the adults was then assessed on either the same normal diet (E,G) or a diet with a reduced amount of yeast (8 g l⁻¹; F,H).