期刊
GLOBAL ECOLOGY AND BIOGEOGRAPHY
卷 -, 期 -, 页码 -出版社
WILEY
DOI: 10.1111/geb.13798
关键词
dispersal trait; global biogeography; hybridization; ploidy diversity; polyploid speciation; trait-dependent biogeography
We investigated the biogeographical and speciation history of 17 diploids and 41 polyploids of Rorippa and demonstrated the role of polyploidy in the difference of dispersal rates using genetic variation data.
AimLong-distance dispersal (LDD) plays an important role in shaping the distribution of global biodiversity. Polyploidy could favour invasion and thereby facilitate LDD. However, how and to what extent polyploidy interacts with LDD remain unclear. Here, we test the putative role of polyploidy in the global dispersal of a cosmopolitan genus Rorippa.LocationGlobal.Time PeriodLate Miocene to present.Major Taxa StudiedRorippa Scop., Brassicaceae.MethodsWe traced the biogeographical and speciation history for 17 diploids and 41 polyploids of Rorippa using variation from plastid genomes and multiple nuclear loci. The ploidy role in dispersal rate difference was demonstrated using trait-dependent biogeographical modelling.ResultsLDD shaped the amphitropical disjunction of Rorippa, during which polyploids showed higher dispersal rates than those of diploids, with 5.6x increase under the best-fitted model. Five diploids and 21 polyploids were identified as products of transoceanic speciation events. Polyploidy-involved LDD was more common in terms of polyploidization following LDD than those preceding LDD.Main ConclusionsWe demonstrate that polyploidy would be not only a driver but also a responder of LDD in Rorippa, highlighting a synergistic relationship between them. Our results provide a framework to uncover the biogeographical consequences of polyploidization and the joint roles of polyploidy and LDD in shaping the distribution of biodiversity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据