10.6084/m9.figshare.6462083.v1
Jin-Hua Ran
Jin-Hua
Ran
Ting-Ting Shen
Ting-Ting
Shen
Ming-Ming Wang
Ming-Ming
Wang
Xiao-Quan Wang
Xiao-Quan
Wang
Tables S1 - S6 from Phylogenomics resolves the deep phylogeny of seed plants and indicates partial convergent or homoplastic evolution between Gnetales and angiosperms
The Royal Society
2018
seed plants
gymnosperms
Gnepine hypothesis
phylotranscriptomics
phylogeny
homoplasy
2018-06-08 06:42:53
Journal contribution
https://rs.figshare.com/articles/journal_contribution/Tables_S1_-_S6_from_Phylogenomics_resolves_the_deep_phylogeny_of_seed_plants_and_indicates_partial_convergent_or_homoplastic_evolution_between_Gnetales_and_angiosperms/6462083
After decades of molecular phylogenetic studies, the deep phylogeny of gymnosperms has not been resolved, and the phylogenetic placement of Gnetales remains one of the most controversial issues in seed plant evolution. To resolve the deep phylogeny of seed plants and to address the sources of phylogenetic conflict, we conducted a phylotranscriptomic study with a sampling of all 13 families of gymnosperms and main lineages of angiosperms. Multiple datasets containing up to 1 296 042 sites across 1308 loci were analysed, using concatenation and coalescence approaches. Our study generated a consistent and well-resolved phylogeny of seed plants, which places Gnetales as sister to Pinaceae and thus supports the Gnepine hypothesis. Cycads plus <i>Ginkgo</i> is sister to the remaining gymnosperms. We also found that Gnetales and angiosperms have similar molecular evolutionary rates, which are much higher than those of other gymnosperms. This implies that Gnetales and angiosperms might have experienced similar selective pressures in evolutionary histories. Convergent molecular evolution or homoplasy is partially responsible for the phylogenetic conflicts in seed plants. Our study provides a robustly reconstructed backbone phylogeny important for future molecular and morphological studies of seed plants, in particular gymnosperms, in the light of evolution.