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.

石松植物和种子植物构成了典型的维管植物。石松植物被认为没有古多倍化，尽管已知该事件对于种子植物的快速扩张至关重要。在这里，包括同源基因点图分析在内的基因组分析检测到多个古多倍化事件，其中一个发生在大约 13-1500 万年前 (MYA)，另一个发生在卷柏 ( Selaginella moellendorffii )基因组进化过程中约 125-142 MYA。模型石松植物。此外，对石松植物和被子植物重建祖先基因组的比较分析表明，石松植物比种子植物受到更多古多倍化事件的影响。目前的基因组分析结果表明，古多倍化有助于维管植物两个谱系（石松植物和种子植物）的成功建立。