Figure 3

Panoramic picture to visualize the differential retention and expansion of the ancestral extensins associated with paleopolyploidy events that have occurred in four modern rosids. Notes: Square represents a SCB duplicated through paleopolyploidy events within and between species. Codes in the square correspond to associated extensin genes. Genes in the same line are thought to have originated from the same ancestral gene. Genes coded with a letter followed by a number (e.g., V1) represent genes retained as extensins; genes coded with an “N” between the letter and the number (e.g., CN1) represent those that have subfunctionalized into non-extensins; “L” represents duplicated extensin that has been lost, but the corresponding SCB has been retained; blank positions correspond to situations where the whole SCBs has been completely lost.