Fig. 5

Ks distribution for multiple polyploidy events in different plant lineages calculated from the paralogous pairs located on the VOZ-containing genomic syntenic blocks. Ks peaks derived from the analysis of paralogous pairs on syntenic blocks surrounding the VOZ gene loci and the corresponding polyploidy events are indicated for individual key species: (a) The core-eudicot γ paleopolyploidy event was traced by analyzing paralogs in the VOZ-containing syntenic blocks in Vitis genome. (b) The γ paleopolyploidy and the “salicoid” events were captured using the syntenic blocks in the Populus genome. (c) The γ (red line) and “soybean-specific” (shaded light red/purple/green) duplicated syntenic blocks were conserved in the soybean genome, whereas the synteny of “early-legume” duplications (dashed box) were lost. (d and e) Identification of the T polyploidy event by analyzing the VOZ-containing syntenic blocks in the genomes of tomato and potato. (f) Both the precommelinid τ polyploidy (shaded green) and subsequent independent P duplication events (shaded light purple/red) were identified by analyzing the syntenic blocks in the genome of oil palm. (g and h) Identification for the pan-grass ρ polyploidy event by analyzing the syntenic blocks in rice and sorghum genomes. (i) The VOZ-containing syntenic blocks were identified as a component of the “large-scale genome duplication” for the Physcomitrella patens genome