Plastid phylogenomic insights into relationships of all flowering plant families
| Autor: | Ting-Shuang Yi, Hong Wang, Douglas E. Soltis, Hong-Tao Li, Jun-Bo Yang, Yang Luo, Rong Zhang, Pamela S. Soltis, Lu Gan, Jian-Jun Jin, Matthew A. Gitzendanner, Michelle van der Bank, Richard G. Olmstead, Jie Cai, Chun-Xia Zeng, Wen-Bin Yu, Peter W. Fritsch, Mark W. Chase, De-Zhu Li, Lian-Ming Gao, Peng-Fei Ma, Ting Zhang, Peter M. Hollingsworth |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Interfamilial relationships
Physiology QH301-705.5 Berberidopsidales Asterids PPA II Plant Science General Biochemistry Genetics and Molecular Biology Magnoliopsida Structural Biology Phylogenetics Mesangiospermae Humans Plastids Biology (General) Clade Ecology Evolution Behavior and Systematics Ecosystem Phylogeny Saxifragales Cell Nucleus biology Phylogenetic tree Caryophyllales Tree of life Cell Biology Plastome biology.organism_classification Evolutionary biology General Agricultural and Biological Sciences Developmental Biology Biotechnology Research Article |
| Zdroj: | BMC Biology, Vol 19, Iss 1, Pp 1-13 (2021) BMC Biology |
| ISSN: | 1741-7007 |
| Popis: | BackgroundFlowering plants (angiosperms) are dominant components of global terrestrial ecosystems, but phylogenetic relationships at the familial level and above remain only partially resolved, greatly impeding our full understanding of their evolution and early diversification. The plastome, typically mapped as a circular genome, has been the most important molecular data source for plant phylogeny reconstruction for decades.ResultsHere, we assembled by far the largest plastid dataset of angiosperms, composed of 80 genes from 4792 plastomes of 4660 species in 2024 genera representing all currently recognized families. Our phylogenetic tree (PPA II) is essentially congruent with those of previous plastid phylogenomic analyses but generally provides greater clade support. In the PPA II tree, 75% of nodes at or above the ordinal level and 78% at or above the familial level were resolved with high bootstrap support (BP ≥ 90). We obtained strong support for many interordinal and interfamilial relationships that were poorly resolved previously within the core eudicots, such as Dilleniales, Saxifragales, and Vitales being resolved as successive sisters to the remaining rosids, and Santalales, Berberidopsidales, and Caryophyllales as successive sisters to the asterids. However, the placement of magnoliids, although resolved as sister to all otherMesangiospermae, is not well supported and disagrees with topologies inferred from nuclear data. Relationships among the five major clades ofMesangiospermaeremain intractable despite increased sampling, probably due to an ancient rapid radiation.ConclusionsWe provide the most comprehensive dataset of plastomes to date and a well-resolved phylogenetic tree, which together provide a strong foundation for future evolutionary studies of flowering plants. |
| Databáze: | OpenAIRE |
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