Fig. 7
From: Isoprene emission by poplar is not important for the feeding behaviour of poplar leaf beetles
Metabolomics of Chrysomela populi infested isoprene emitting (IE) and non-emitting (NE) poplars under field conditions. Score scatter plots of Principal Component Analysis (PCA) of FT-ICR/MS metabolomics data showing (a) PC1 versus PC2 and (b) PC2 versus PC3. Symbols represent the poplar genotypes and leaf age (IE young leaf [○], NE young leaf [Δ], IE old leaf [●], NE old leaf [▲]). Red symbols represent infested and blue control plants. Venn-Diagram of discriminant masses (c) responsible for the separation of leaf developmental stage and (d) responsible for the separation of infested from control plants