首页|Phylogenomics,reticulation,and biogeographical history of Elaeagnaceae

Phylogenomics,reticulation,and biogeographical history of Elaeagnaceae

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Phylogenomics,reticulation,and biogeographical history of Elaeagnaceae
The angiosperm family Elaeagnaceae comprises three genera and ca.100 species distributed mainly in Eurasia and North America.Little family-wide phylogenetic and biogeographic research on Elaeagnaceae has been conducted,limiting the application and preservation of natural genetic resources.Here,we reconstructed a strongly supported phylogenetic framework of Elaeagnaceae to better understand inter-and intrageneric relationships,as well as the origin and biogeographical history of the family.For this purpose,we used both nuclear and plastid sequences from Hyb-Seq and genome skimming approaches to reconstruct a well-supported phylogeny and,along with current distributional data,infer historical biogeographical processes.Our phylogenetic analyses of both nuclear and plastid data strongly support the monophyly of Elaeagnaceae and each of the three genera.Elaeagnus was resolved as sister to the well-supported clade of Hippophae and Shepherdia.The intrageneric relationships of Elaeagnus and Hippophae were also well resolved.High levels of nuclear gene tree conflict and cytonuclear discordance were detected within Elaeagnus,and our analyses suggest putative ancient and recent hybridization.We inferred that Elaeagnaceae originated at ca.90.48 Ma(95％CI=89.91-91.05 Ma),and long-distance dispersal likely played a major role in shaping its intercontinentally disjunct distribution.This work presents the most comprehensive phylogenetic framework for Elaeagnaceae to date,offers new insights into previously unresolved relationships in Elaeagnus,and provides a foundation for further studies on classification,evolution,biogeography,and conservation of Elaeagnaceae.

BiogeographyCytonuclear discordanceHybridizationPhylogenyLong-distance dispersal

Wei Gu、Ting Zhang、Shui-Yin Liu、Qin Tian、Chen-Xuan Yang、Qing Lu、Xiao-Gang Fu、Heather R.Kates、Gregory W.Stull、Pamela S.Soltis、Douglas E.Soltis、Ryan A.Folk、Robert P.Guralnick、De-Zhu Li、Ting-Shuang Yi

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Germplasm Bank of Wild Species & Yunnan Key Laboratory of Crop Wild Relatives Omics,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China

Kunming College of Life Science,University of Chinese Academy of Sciences,Kunming 650201,China

Key Laboratory of Plant Diversity and Specialty Crops,Chinese Academy of Sciences,Beijing 100093,China

School of Life Sciences,Yunnan University,Kunming 650504,Yunnan,China

Florida Museum of Natural History,University of Florida,Gainesville,FL 32611,United States

Department of Biology,University of Florida,Gainesville,FL 32611,United States

Department of Biological Sciences,Mississippi State University,Mississippi,MS 39762,United States

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Biogeography Cytonuclear discordance Hybridization Phylogeny Long-distance dispersal

2024

10.1016/j.pld.2024.07.001

植物多样性(英文)
中国科学院昆明植物研究所，中国植物学会

植物多样性(英文)

CSTPCD
影响因子：0.617
ISSN：2096-2703
年,卷(期)：2024.46(6)