Extended Data Fig. 4: Ancestral polyploidy events in extant gymnosperms.
From: The Cycas genome and the early evolution of seed plants
Example showing both the phylogenomic and syntenic evidence supporting an ancestral polyploidy event in extant gymnosperms. Four pairs of paralogous genes in OG0000093, OG0000255, OG00000276 and OG0000316 were duplicated before the divergence of gymnosperms and after the split of angiosperms and gymnosperms based on phylogenetic trees. These pairs of duplicated genes are located on the same syntenic block identified in the C. panzhihuaensis genome. The abbreviated name given before the protein ID represents species name: CYCAS: Cycas panzhihuaensis, Gb: Ginkgo biloba, ELO: Encephalartos longifolius, SEGI: Sequoiadendron giganteum, GMON: Gnetum montanum, PICABI: Picea abies, PITA: Pinus taeda.
