TY - JOUR TI - Paleo-polyploidization in Lycophytes AU - Wang, J. AU - Yu, J. AU - Sun, P. AU - Li, C. AU - Song, X. AU - Lei, T. AU - Li, Y. AU - Yuan, J. AU - Sun, S. AU - Ding, H. AU - Duan, X. AU - Shen, S. AU - Shen, Y. AU - Li, J. AU - Meng, F. AU - Xie, Y. AU - Wang, J. AU - Hou, Y. AU - Zhang, J. AU - Zhang, X. AU - Li, X.-Q. AU - Paterson, A.H. AU - Wang, X. JO - Genomics Proteomics and Bioinformatics PY - 2020 VL - 18 TODO - 3 SP - 333-340 PB - Beijing Genomics Institute SN - 1672-0229 TODO - 10.1016/j.gpb.2020.10.002 TODO - angiosperm; article; human; nonhuman; polyploidy; genetics; genomics; molecular evolution; phylogeny; plant genome; Selaginellaceae, Evolution, Molecular; Genome, Plant; Genomics; Phylogeny; Polyploidy; Selaginellaceae TODO - Lycophytes and seed plants constitute the typical vascular plants. Lycophytes have been thought to have no paleo-polyploidization although the event is known to be critical for the fast expansion of seed plants. Here, genomic analyses including the homologous gene dot plot analysis detected multiple paleo-polyploidization events, with one occurring approximately 13–15 million years ago (MYA) and another about 125–142 MYA, during the evolution of the genome of Selaginella moellendorffii, a model lycophyte. In addition, comparative analysis of reconstructed ancestral genomes of lycophytes and angiosperms suggested that lycophytes were affected by more paleo-polyploidization events than seed plants. Results from the present genomic analyses indicate that paleo-polyploidization has contributed to the successful establishment of both lineages—lycophytes and seed plants—of vascular plants. © 2020 ER -