Fig. 8

Idealized gene tree. Idealized gene family phylogenetic tree constructed to indicate gene retention and fractionation following polyploidy events in Arabidopsis, Populus, Solanum, Vitis, Nelumbo, Elaeis, Oryza, Picea and Physcomitrella. For simplicity and illustration purposes, branch lengths are not to scale to the divergence time and the known K-Pg boundary polyploidy events are aligned and highlighted. Extant VOZ gene loci were labeled and the observed fractionation following polyploidization are represented as dotted lines in the gene tree. The two ancestral polyploidy events ε (in angiosperms) and ξ (in seed plants) are indicated as green circles