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Diversification of Rosaceae since the Late Cretaceous based on

  • [设施]:种质库
  • [期刊/会议名称]:New Phytologist
  • [摘要]: Phylogenetic relationships in Rosaceae have long been problematic because of frequent hybridisation, apomixis and presumed rapid radiation, and their historical diversification has not been clarified. ? With 87 genera representing all subfamilies and tribes of Rosaceae and six of the other eight families of Rosales (outgroups), we analysed 130 newly sequenced plastomes together with 12 from GenBank in an attempt to reconstruct deep relationships and reveal temporal diversi- fication of this family. ? Our results highlight the importance of improving sequence alignment and the use of appropriate substitution models in plastid phylogenomics. Three subfamilies and 16 tribes (as previously delimited) were strongly supported as monophyletic, and their relationships were fully resolved and strongly supported at most nodes. Rosaceae were estimated to have origi- nated during the Late Cretaceous with evidence for rapid diversification events during several geological periods. The major lineages rapidly diversified in warm and wet habits during the Late Cretaceous, and the rapid diversification of genera from the early Oligocene onwards occurred in colder and drier environments. ? Plastid phylogenomics offers new and important insights into deep phylogenetic relation- ships and the diversification history of Rosaceae. The robust phylogenetic backbone and time estimates we provide establish a framework for future comparative studies on rosaceous evolution.
  • [发表日期]:2017
  • [第一作者]:Shu-Dong Zhang
  • [第一作者单位]:中科院昆明植物研究所
  • [通讯作者]:De-Zhu Li, Ting-Shuang Yi
  • [通讯作者单位]:中科院昆明植物研究所
  • [论文类型]:0
  • [期刊分类]:SCI1区
  • [学科分类]:植物_动物学
  • [影响因子]:7.554
  • [关键词]: diversification, phylogenomics, plastome, rapid radiation, Rosaceae, systematic error.
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