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Dryad

Data for: Evolution and diversity of the orchid genus Dendrobium

Data files

Dec 11, 2024 version files 4.76 MB

Abstract

Orchids constitute one of the most diverse families of angiosperms, yet their genome evolution and diversity remain unclear. To thoroughly explore the genome diversity of Dendrobium orchids, we selected representative species from 12 major Dendrobium sections that are the representatives of the genus in terms of life forms (lithophyte or epiphyte), floral morphology, flowering time, geographical distribution, and traditional utility. We first constructed a high-confidence phylogenetic tree and calculated the divergence times using single-copy orthologous families from 27 different plant species. Since whole genome duplication (WGD) and chromosome rearrangement events are considered important factors in genome evolution and speciation, we then investigated WGD events and karyotypic evolution within the Dendrobium genus.