Fig. 9

Terpene accumulation pattern at 38 dpi in symptomatic (S) and non-symptomatic (NS) needles. a Hierarchical cluster analysis of terpene contents at 38 dpi, in S and NS needles. Colours represent the log2 ratio, according to the scale shown at the bottom Note that the genotypes PRA-R and PRA-A show a very similar terpene accumulation pattern. b Terpene abundance, represented as log2fold change of S vs. NS needles for each genotype. Note the general terpene decrease in S needles