Data from: 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 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.