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Figure 4 | BMC Plant Biology

Figure 4

From: Terpene synthases and their contribution to herbivore-induced volatile emission in western balsam poplar (Populus trichocarpa)

Figure 4

Terpene emission from individual P. trichocarpa leaves after herbivory restricted to an apical or basal leaf or no herbivory. Volatiles of eight single leaves, leaf plastochron indices 3 to 10 (LPI3 to LPI10) were measured from either control trees (ctr), trees which received herbivory apically on leaf LPI3 (ha, herbivory apical) or basally on leaf LPI10 (hb, herbivory basal). After separation by GC, the peaks were identified by MS and quantified using an FID. Means and standard errors are shown (n = 5). To test for statistical significance between the treatments in one leaf position, a one way analysis of variance (ANOVA) was performed. Different letters show significant differences. Germacrene D, TMTT and nerolidol were not tested for significance. L ratios and p values are given in Additional file 2: Table S6.

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