Figure 3
From: Network dynamics of eukaryotic LTR retroelements beyond phylogenetic trees
Evolutionary history of LTR retroelements superimposed over the tree of eukaryotes. The tree of Ty3/Gypsy LTR retroelements is depicted in blue; that of Ty1/Copia elements in yellow; Bel/Pao in black; Retroviridae in violet; and Caulimoviridae in green. This set of trees together defines a natural network constrained by the tree of eukaryotes. The figure includes information about diverse reticulate events in the evolutionary history of LTR retroelements. The framework has been divided into three major transitions to elucidate the natural histories of the distinct LTR retroelement communities on the basis of the most likely ages of their hosts, calibrated by previous molecular estimations. The first transition is emphasized in light grey, the second in light red, and the third in light blue.