Fig. 2: Effects of oral administration of indole and tryptophan on P. stali infected with tryptophanase-disrupted and control E. coli.
From: Tryptophanase disruption promotes insect–bacterium mutualism
a,b, Effects of indole feeding via drinking water on growth and survival of P. stali infected with tryptophanase-disrupted ΔtnaA E. coli (a) and control ΔintS E. coli (b). c,d, Effects of tryptophan feeding via drinking water on growth and survival of P. stali infected with tryptophanase-disrupted ΔtnaA E. coli (c) and control ΔintS E. coli (d). e,f, Effects of indole and tryptophan feeding via drinking water on haemolymphal indole levels (e) and tryptophan levels (f) of P. stali infected with tryptophanase-disrupted ΔtnaA E. coli and control ΔintS E. coli. For box plots, centre lines, limits and dots show medians, first and third quartiles, and data points, respectively. Different alphabetical letters (a, b, c and d) indicate statistically significant differences (pairwise Wilcoxon rank–sum test with Hommel’s correction: P < 0.05, two sided). Biological replicate numbers are indicated on the graphs.
