Extensive reticulate evolution within Fargesia (s.l.) (Bambusoideae: Poaceae) and its allies: Evidence from multiple nuclear markers
| Autor: | Jian-Qiang Zhang, Yu-Qu Zhang, Yi Ren, Wan-Wan Li, Xiao-Cheng Xing, Yun Zhou |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Genetic Markers
0106 biological sciences 0301 basic medicine Introgression Genes Plant Poaceae 010603 evolutionary biology 01 natural sciences Evolution Molecular 03 medical and health sciences Fargesia Databases Genetic Genetics Yushania Clade Molecular Biology Phylogeny Ecology Evolution Behavior and Systematics Cell Nucleus Base Sequence biology Phylogenetic tree Bayes Theorem biology.organism_classification Reticulate evolution 030104 developmental biology Taxon Evolutionary biology Hybridization Genetic Ampelocalamus |
| Zdroj: | Molecular Phylogenetics and Evolution. 149:106842 |
| ISSN: | 1055-7903 |
| DOI: | 10.1016/j.ympev.2020.106842 |
| Popis: | Reticulate evolution resulting from hybridization and introgression has been recognized as a creative source of species and diversification in bamboos. Previous phylogenetic studies revealed that Fargesia (s.l.) (Fargesia and Yushania) was divided into the Fargesia spathe clade and the non-spathe clade. Interestingly, the Fargesia spathe clade may have originated from hybridization among other clades within Fargesia (s.l.). Understanding the hybrid origin of this clade requires a robust phylogenetic framework in which major clades within Fargesia (s.l.) are resolved. Here, we used three nuclear genes to reconstruct the evolutionary history of Fargesia (s.l.) and its allies to identify putative patterns in the origin of the Fargesia spathe clade and to examine the extent to which reticulate evolution has occurred at the interspecific level in bamboos. Bashania species form a clade with Fargesia (s.l.), which is further divided into Group I and Group II. The Fargesia spathe clade, the Alpine Bashania clade, and Fargesia yajiangensis comprise Group I, while the Bashania fargesii clade and the remaining Fargesia (s.l.) species form Group II. Incongruence between the current nuclear-based and previous plastid phylogenies demonstrate several possible hybridization events among Fargesia (s.l.) species and related taxa, which have given rise to the Fargesia spathe clade, the Phyllostachys clade, and the Ampelocalamus clade. We also detected several putative hybrid species of Fargesia (s.l.). Our results show that reticulate evolution has played a prominent role in Fargesia (s.l.) evolution, which could, in part, account for the taxonomic difficulty associated with Fargesia (s.l.) and the alpine bamboos. The study also underscores the importance of hybridization in the evolution of bamboos, at both intergeneric and intrageneric levels. |
| Databáze: | OpenAIRE |
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