Fig. 6

Duplication events inferred from maximum likelihood phylogenies utilizing a support-based approach. Collapsed RAxML topology and focal bootstrap values (BS) of VOZ transcription factor genes in different plant lineages including eudicots a-c, asterids d and monocots e, using the unique VOZ gene from Amborella trichopoda as outgroup. BS values for nodes #1, #2 and #3 indicated on the phylogenic trees were used to detect polyploidy events which are depicted in red circles. These include: the core eudicot-wide γ event (Analyses I-III); the T polypoildy events in Solanaceae (Analysis IV); and the precommelinid τ and pan-grass ρ duplication events (Analysis V). Red stars on the nodes of the phylogenic tree represented well-supported ancestral duplication events and blue stars denote more lineage-specific duplications