Phylotranscriptomics reveal the complex evolutionary and biogeographic history of the genus Tsuga with an East Asian-North American disjunct distribution ...

• Main Authors: Feng, Yuan-Yuan, Shen, Ting-Ting, Shao, Cheng-Cheng, Du, Hong, Ran, Jin-Hua, Wang, Xiao-Quan
• Format: Dataset
• Language: English
• Published: Dryad 2020
• Subjects: Tsuga, Phylotranscriptomics, Biogeography, Disjunct distribution, Bering Land Bridge, Hybrid origin; Bering Land Bridge
• Online Access: https://dx.doi.org/10.5061/dryad.12jm63xwh; https://datadryad.org/stash/dataset/doi:10.5061/dryad.12jm63xwh

The disjunct distribution between East Asia and North America is one of the best established biogeographic patterns. A robust phylogeny is fundamental for understanding the biogeographic histories of taxa with this distribution pattern. Tsuga (hemlock) is a genus of Pinaceae with a typical intercontinental disjunct distribution in East Asia and eastern and western North America, and its phylogeny has not been completely reconstructed in previous studies. In this study, we reconstructed a highly resolved phylogeny of Tsuga using 881 nuclear genes, 60 chloroplast genes and 23 mitochondrial genes and explored its biogeographic and reticulate evolutionary history. The results of phylogenetic analysis, molecular dating and ancestral area reconstruction indicate that Tsuga very likely originated from North America in the late Oligocene and dispersed from America to East Asia via the Bering Land Bridge during the middle Miocene. In particular, we found complex reticulate evolutionary pattern among the East Asian ...