Plastome phylogenomic analysis of Torreya (Taxaceae)

• DOI: 10.1111/jse.12482
• Publication Date: 2019-01-18T16:13:06Z
• Authors: Xu Zhang; Hua‐Jie Zhang; Jacob B. Landis; Tao Deng; Ai‐Ping Meng; Hang Sun; Yan‐Song Peng; Heng‐Chang Wang; Yan‐Xia Sun
• Keywords: Monophyly; Sister group

Abstract Torreya Arn., a small genus of Taxaceae, consists six species occurring in North America and eastern Asia. Several phylogenetic studies have previously been undertaken to reveal relationships within this genus, although only few DNA segments or were used. In the present study, we sequenced five plastomes combined these with two existing from investigate plastome evolution . All shared same complement 82 protein‐coding genes, 4 ribosomal RNA 31 transfer genes. Phylogenetic inference using maximum likelihood framework consisted an 82‐gene, 17‐taxon dataset, including all , resolved as monophyletic clade. Strongly supported include position early diverging T. jackii Chun, sister pairs fargesii Franch.– nucifera (L.) Siebold & Zucc. grandis Fortune ex Lindl.– californica Torr., monophyly clade var. yunnanensis addition relationships, divergence time estimation biogeographical analysis carried out. The diversification was estimated be approximately 8.9 Ma. Ancestral state reconstruction geographical area suggested China/eastern most likely ancestral region for extant species.