Biogeographic analysis based on phylogenomic data supports multiple ancient dispersals that facilitated the eastern Asia-North America-Mexico disjunction in the subfamily Linnaeoideae(Caprifoliaceae)

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外文摘要：The small subfamily Linnaeoideae of Caprifoliaceae exhibits a disjunct distribution in Eurasia and North America,including Mexico,with most taxa occurring in eastern Asia or Mexico and the monospecific Linnaea Gronov.ex L.having a circumboreal to north temperate distribution.We sampled 17 of the 20 species representing all Linnaeoideae genera and used nuclear(target enrichment)and complete plastome sequence data to reconstruct the phylogeny.Our results show strong topological conflicts between nuclear and plastid data,especially concerning Dipelta Maxim.and Diabelia Landrein,supporting hybridization events complicating the deep diversification.Nuclear data were used for divergence time estimation and ancestral area reconstruction.The divergence time between the Mexican Vesalea M.Martens & Galeotti and the Linnaea clade was dated to 39.5 Ma,with a 95％highest posterior density of 28.2 Ma(mid-Oligocene)to 45.2 Ma(mid-Eocene).Reconstructed ancestral areas support a widespread common ancestor of Linnaea plus Vesalea in Mexico and at least another area(eastern Asia,North America,or Europe).The biogeographic analysis,including fossils,supports the ancestral range of Linnaeoideae to be widespread in central and western China+Europe+Mexico,or eastern and northern Asia+central and western China+Mexico,or central and western China+North America+Mexico.The North Atlantic and/or the Bering land bridges may be important in the widespread distribution across continents in the Northern Hemisphere.Our study highlights the importance of utilizing fossils in biogeographic inferences andusing data from different genomes while reconstructing deep and shallow phylogenies of organisms.

外文关键词：

biogeographydivergence time estimationLinnaeoideaephylogenomics

作者：

Hong-Xin Wang、Diego F.Morales-Briones、Jacob B.Landis、Jun Wen、Hua-Feng Wang

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作者单位：

Sanya Nanfan Research Institute of Hainan University,Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture,Sanya 572025,China

Zhai Mingguo Academician Work Station,Sanya University,Sanya 572000,China

Princess Therese von Bayern chair of Systematics,Biodiversity and Evolution of Plants,Ludwig-Maximilians-Universität München,80638 Munich,Germany

School of Integrative Plant Science,Section of Plant Biology and the L.H.Bailey Hortorium,Cornell University,Ithaca,NY 14850,USA

BTI Computational Biology Center,Boyce Thompson Institute,Ithaca,NY 14853,USA

Department of Botany,National Museum of Natural History,Smithsonian Institution,Washington D.C.20013-7012,USA

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出版年：

2024

DOI：

10.1111/jse.13036

植物分类学报

中国科学院植物研究所　中国植物学会

植物分类学报

CSTPCD

影响因子：0.322

ISSN：1674-4918

年,卷(期)：2024.62(5)