Figure 3

Experiment III: principal component analysis (PCA) analysis (a) and OPLS-DA analysis (b) of volatile samples derived from bacterial strains R. aquatilis B301 (green dots), S. liquefaciens B310 (blue dots) and Pseudomonas sp. 7 B321 (red dots) associated with D. valens larvae and variable importance for the projection (VIP) values of 67 volatiles in OPLS-DA (c). The dashed ellipse line represents 95% confidence intervals.