Περίληψη:
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
Συγγραφείς:
Wang, J.
Yu, J.
Sun, P.
Li, C.
Song, X.
Lei, T.
Li, Y.
Yuan, J.
Sun, S.
Ding, H.
Duan, X.
Shen, S.
Shen, Y.
Li, J.
Meng, F.
Xie, Y.
Wang, J.
Hou, Y.
Zhang, J.
Zhang, X.
Li, X.-Q.
Paterson, A.H.
Wang, X.
Λέξεις-κλειδιά:
angiosperm; article; human; nonhuman; polyploidy; genetics; genomics; molecular evolution; phylogeny; plant genome; Selaginellaceae, Evolution, Molecular; Genome, Plant; Genomics; Phylogeny; Polyploidy; Selaginellaceae
