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Citation for Study 19664

Citation title: "Multiple polyploidization events across Asteraceae with two nested events in the early history revealed by nuclear phylogenomics".

Study name: "Multiple polyploidization events across Asteraceae with two nested events in the early history revealed by nuclear phylogenomics".

This study is part of submission 19664 (Status: Published).

Citation

Huang C., Zhang C., Liu M., Hu Y., Gao T., Qi J., & Ma H. 2016. Multiple polyploidization events across Asteraceae with two nested events in the early history revealed by nuclear phylogenomics. Molecular Biology and Evolution, .

Authors

• Huang C. (submitter)
• Zhang C.
• Liu M.
• Hu Y.
• Gao T.
• Qi J.
• Ma H.

Abstract

Biodiversity results from multiple evolutionary mechanisms, including genetic variation and natural selection. Whole genome duplications (WGDs), or polyploidizations, provide opportunities for large-scale genetic modifications. Many evolutionarily successful lineages, including angiosperms and vertebrates, are ancient polyploids, suggesting that WGDs are a driving force in evolution. However, this hypothesis is challenged by the observed lower speciation and higher extinction rates of recently formed polyploids than diploids. Asteraceae includes about ten percent of angiosperm species, is thus undoubtedly one of the most successful lineages and paleopolyploidization was suggested early in this family using a small number of datasets. Here, we used genes from 64 new transcriptome datasets and others to reconstruct a robust Asteraceae phylogeny, covering 73 species from 18 tribes in six subfamilies. We estimated their divergence times and further identified multiple potential ancient WGDs within several tribes and shared by the Heliantheae alliance, core Asteraceae (Asteroideae-Mutisioideae), and also with the sister family Calyceraceae. For two of the WGD events, there were subsequent great increases in biodiversity; the older one proceeded the divergence of at least 10 subfamilies within 10 My, with great variation in morphology and physiology, while the other was followed by extremely high species richness in the Heliantheae alliance clade. Our results provide different evidence for several WGDs in Asteraceae, and reveal distinct association among WGD events, dramatic changes in environment and species radiations, providing a possible scenario for polyploids to overcome the disadvantages of WGDs and to evolve into lineages with high biodiversity.

Keywords

Asteraceae, divergence time estimation, orthologous nuclear gene, phylogeny, transcriptome, whole-genome duplication

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S19664
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref26173,
  	 author = {Chien-Hsun  Huang and Caifei  Zhang and Mian  Liu and Yi  Hu and Tiangang  Gao and Ji  Qi and Hong  Ma},
  	 title = {Multiple polyploidization events across Asteraceae with two nested events in the early history revealed by nuclear phylogenomics},
  	 year = {2016},
  	 keywords = {Asteraceae, divergence time estimation, orthologous nuclear gene, phylogeny, transcriptome, whole-genome duplication},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Molecular Biology and Evolution},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Biodiversity results from multiple evolutionary mechanisms, including genetic variation and natural selection. Whole genome duplications (WGDs), or polyploidizations, provide opportunities for large-scale genetic modifications. Many evolutionarily successful lineages, including angiosperms and vertebrates, are ancient polyploids, suggesting that WGDs are a driving force in evolution. However, this hypothesis is challenged by the observed lower speciation and higher extinction rates of recently formed polyploids than diploids. Asteraceae includes about ten percent of angiosperm species, is thus undoubtedly one of the most successful lineages and paleopolyploidization was suggested early in this family using a small number of datasets. Here, we used genes from 64 new transcriptome datasets and others to reconstruct a robust Asteraceae phylogeny, covering 73 species from 18 tribes in six subfamilies. We estimated their divergence times and further identified multiple potential ancient WGDs within several tribes and shared by the Heliantheae alliance, core Asteraceae (Asteroideae-Mutisioideae), and also with the sister family Calyceraceae. For two of the WGD events, there were subsequent great increases in biodiversity; the older one proceeded the divergence of at least 10 subfamilies within 10 My, with great variation in morphology and physiology, while the other was followed by extremely high species richness in the Heliantheae alliance clade. Our results provide different evidence for several WGDs in Asteraceae, and reveal distinct association among WGD events, dramatic changes in environment and species radiations, providing a possible scenario for polyploids to overcome the disadvantages of WGDs and to evolve into lineages with high biodiversity.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 26173
  AU  - Huang,Chien-Hsun 
  AU  - Zhang,Caifei 
  AU  - Liu,Mian 
  AU  - Hu,Yi 
  AU  - Gao,Tiangang 
  AU  - Qi,Ji 
  AU  - Ma,Hong 
  T1  - Multiple polyploidization events across Asteraceae with two nested events in the early history revealed by nuclear phylogenomics
  PY  - 2016
  KW  - Asteraceae
  KW  - divergence time estimation
  KW  - orthologous nuclear gene
  KW  - phylogeny
  KW  - transcriptome
  KW  - whole-genome duplication
  UR  - http://dx.doi.org/
  N2  - Biodiversity results from multiple evolutionary mechanisms, including genetic variation and natural selection. Whole genome duplications (WGDs), or polyploidizations, provide opportunities for large-scale genetic modifications. Many evolutionarily successful lineages, including angiosperms and vertebrates, are ancient polyploids, suggesting that WGDs are a driving force in evolution. However, this hypothesis is challenged by the observed lower speciation and higher extinction rates of recently formed polyploids than diploids. Asteraceae includes about ten percent of angiosperm species, is thus undoubtedly one of the most successful lineages and paleopolyploidization was suggested early in this family using a small number of datasets. Here, we used genes from 64 new transcriptome datasets and others to reconstruct a robust Asteraceae phylogeny, covering 73 species from 18 tribes in six subfamilies. We estimated their divergence times and further identified multiple potential ancient WGDs within several tribes and shared by the Heliantheae alliance, core Asteraceae (Asteroideae-Mutisioideae), and also with the sister family Calyceraceae. For two of the WGD events, there were subsequent great increases in biodiversity; the older one proceeded the divergence of at least 10 subfamilies within 10 My, with great variation in morphology and physiology, while the other was followed by extremely high species richness in the Heliantheae alliance clade. Our results provide different evidence for several WGDs in Asteraceae, and reveal distinct association among WGD events, dramatic changes in environment and species radiations, providing a possible scenario for polyploids to overcome the disadvantages of WGDs and to evolve into lineages with high biodiversity.
  L3  - 
  JF  - Molecular Biology and Evolution
  VL  - 
  IS  - 
  ER  -