Rapid radiations of both kiwifruit hybrid lineages and their parents shed light on a two-layer mode of species diversification

Rapid radiations of both kiwifruit hybrid lineages and their parents shed light on a two-layer mode of species diversification

© 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.

Détails bibliographiques
Publié dans:The New phytologist. - 1990. - 215(2017), 2 vom: 15. Juli, Seite 877-890
Auteur principal: Liu, Yifei (Auteur)
Autres auteurs: Li, Dawei, Zhang, Qiong, Song, Chi, Zhong, Caihong, Zhang, Xudong, Wang, Ying, Yao, Xiaohong, Wang, Zupeng, Zeng, Shaohua, Guo, Yangtao, Wang, Shuaibin, Li, Xinwei, Li, Li, Liu, Chunyan, McCann, Honour C, He, Weiming, Niu, Yan, Chen, Min, Du, Liuwen, Gong, Junjie, Datson, Paul M, Hilario, Elena, Huang, Hongwen
Format: Article en ligne
Langue:English
Publié: 2017
Accès à la collection:The New phytologist
Sujets:Journal Article Actinidia backbone phylogeny hybrid speciation phylogenomics reticulate evolution
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520 |a Reticulate speciation caused by interspecific hybridization is now recognized as an important mechanism in the creation of biological diversity. However, depicting the patterns of phylogenetic networks for lineages that have undergone interspecific gene flow is challenging. Here we sequenced 25 taxa representing natural diversity in the genus Actinidia with an average mapping depth of 26× on the reference genome to reconstruct their reticulate history. We found evidence, including significant gene tree discordance, cytonuclear conflicts, and changes in genome-wide heterozygosity across taxa, collectively supporting extensive reticulation in the genus. Furthermore, at least two separate parental species pairs were involved in the repeated origin of the hybrid lineages, in some of which a further phase of syngameon was triggered. On the basis of the elucidated hybridization relationships, we obtained a highly resolved backbone phylogeny consisting of taxa exhibiting no evidence of hybrid origin. The backbone taxa have distinct demographic histories and are the product of recent rounds of rapid radiations via sorting of ancestral variation under variable climatic and ecological conditions. Our results suggest a mode for consecutive plant diversification through two layers of radiations, consisting of the rapid evolution of backbone lineages and the formation of hybrid swarms derived from these lineages 
650 4 |a Journal Article 
650 4 |a Actinidia 
650 4 |a backbone phylogeny 
650 4 |a hybrid speciation 
650 4 |a phylogenomics 
650 4 |a reticulate evolution 
700 1 |a Li, Dawei  |e verfasserin  |4 aut 
700 1 |a Zhang, Qiong  |e verfasserin  |4 aut 
700 1 |a Song, Chi  |e verfasserin  |4 aut 
700 1 |a Zhong, Caihong  |e verfasserin  |4 aut 
700 1 |a Zhang, Xudong  |e verfasserin  |4 aut 
700 1 |a Wang, Ying  |e verfasserin  |4 aut 
700 1 |a Yao, Xiaohong  |e verfasserin  |4 aut 
700 1 |a Wang, Zupeng  |e verfasserin  |4 aut 
700 1 |a Zeng, Shaohua  |e verfasserin  |4 aut 
700 1 |a Wang, Ying  |e verfasserin  |4 aut 
700 1 |a Guo, Yangtao  |e verfasserin  |4 aut 
700 1 |a Wang, Shuaibin  |e verfasserin  |4 aut 
700 1 |a Li, Xinwei  |e verfasserin  |4 aut 
700 1 |a Li, Li  |e verfasserin  |4 aut 
700 1 |a Liu, Chunyan  |e verfasserin  |4 aut 
700 1 |a McCann, Honour C  |e verfasserin  |4 aut 
700 1 |a He, Weiming  |e verfasserin  |4 aut 
700 1 |a Niu, Yan  |e verfasserin  |4 aut 
700 1 |a Chen, Min  |e verfasserin  |4 aut 
700 1 |a Du, Liuwen  |e verfasserin  |4 aut 
700 1 |a Gong, Junjie  |e verfasserin  |4 aut 
700 1 |a Datson, Paul M  |e verfasserin  |4 aut 
700 1 |a Hilario, Elena  |e verfasserin  |4 aut 
700 1 |a Huang, Hongwen  |e verfasserin  |4 aut 
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