RADseq resolves the phylogeny of Hawaiian Myrsine(Primulaceae)and provides evidence for hybridization  

作　　者：Marc S.Appelhans Claudia Paetzold Kenneth R.Wood Warren L.Wagner 

机构地区：[1]Department of Systematics,Biodiversity and Evolution of Plants,Albrecht-von-Haller Institute for Plant Sciences,University of Goettingen,Untere Karspüle 2,Goettingen 37073,Germany [2]Department of Botany,Smithsonian Institution,PO Box 37012,Washington,DC 20013-7012,USA [3]National Tropical Botanical Garden,3530 Papalina Road,Kalāheo,HI 96741,USA

出　　处：《Journal of Systematics and Evolution》2020年第6期823-840,共18页植物分类学报（英文版）

基　　金：the German Science Foundation(DFG;Grant AP 251/3-1 to M.S.Appelhans).

摘　　要：The Hawaiian radiation of Myrsine(primrose family,Primulaceae)is the only one among the ten most species-rich Hawaiian plant lineages that has never been included in a phylogenetic analysis.Our study is based on a RADseq dataset of nearly all Hawaiian Myrsine species and a Sanger sequencing dataset based on a worldwide sampling of Myrsine and related genera.Myrsine as a whole might be paraphyletic with respect to the monotypic Macaronesian genera Heberdenia and Pleiomeris,whereas Hawaiian Myrsine is resolved as monophyletic.The Sanger sequencing proved to be insufficient to resolve the Hawaiian lineage,whereas RADseq fully resolved the relationships with high support.Hawaiian Myrsine consists of three main lineages,of which one contains the majority of species and is mainly confined to Kauaʻi,and the other two lineages primarily consist of few widespread species.Although phylogenetic reconstructions delivered fully resolved and supported tree topologies,Quartet Sampling and HyDe analyses reveal phylogenetic incongruence throughout the phylogeny and provide the first molecular evidence of extensive hybridization in the lineage.

关 键 词：HyDe island biogeography Kōlea MYRSINACEAE Pacific Ocean Quartet Sampling 

分 类 号：Q94[生物学—植物学]