Fig. 3

Sum of expression for the regulated transcripts by KOG classes and for each compartment. A double hierarchical clustering by using GENESIS software is shown. Each row represents a KOG class and the expression values are colored in yellow (low expression) to blue (high expression). A white asterisk indicates statistical significance among one of P. microcarpus compartments using one-way ANOVA followed by the different multiples pairwise comparison (Tukey, Duncan, Scott-Knot) (p < 0.05). On the right, some examples of regulated genes and the corresponding KOG class is given. Black plus signal indicates no statistical significance among each compartment was found (p < 0.05). Log₂ values of the RPKM sums were used