Fig. 5.

—Retrotransposon activity pattern per species and lineage. Retrotransposon activity evolution over time. For each species, retrotransposons were grouped either in (a) superfamilies or (b) lineages. The proportion of retrotransposons falling in each specific age bin is shown, the total transposon numbers per each species and superfamily or lineage is shown in the top left corner. Histograms containing <100 observations had this number in red. Members from Gypsy and Copia superfamilies are colored green and blue, respectively. In gray, the proposed date for the Citrus radiation giving rise to the species studied (7.5–6.0 Ma) converted to distance units (0.075–0.048 K2p units) (Hu et al. 2011) is shown. Species naming convention are as in figure 1.