Plant Systematics and Evolution

, Volume 294, Issue 1, pp 57–64

Molecular phylogenetic reconstruction of Osmanthus Lour. (Oleaceae) and related genera based on three chloroplast intergenic spacers

  • Shi-Quan Guo
  • Min Xiong
  • Chun-Feng Ji
  • Zhi-Rong Zhang
  • De-Zhu Li
  • Zhi-Yong Zhang
Original Article

DOI: 10.1007/s00606-011-0445-z

Cite this article as:
Guo, SQ., Xiong, M., Ji, CF. et al. Plant Syst Evol (2011) 294: 57. doi:10.1007/s00606-011-0445-z

Abstract

Although polyphyly of Osmanthus has been suggested by different authors, the conclusions of previous studies have lacked robust support due to limited sampling or a paucity of phylogenetic characters. In this study, the phylogeny of Osmanthus was explored using sequences of three informative chloroplast regions (psbJ-petA, rpl32-trnL and rps16-trnQ), including all the five sections of the genus and eight closely related genera. The results confirm that Osmanthus, as presently circumscribed, is a polyphyletic group, containing three or four distinct lineages, i.e. sect. Leiolea (lineage I), sect. Notosmanthus (lineage III), sects. Osmanthus (excluding O. decorus), Siphosmanthus and Linocieroides (lineage IV), and an uncertain lineage including only O. decorus (lineage II). These results emphasize that the generic delimitation within subtribe Oleinae is in need of revision. In addition, this study found that the four cultivar groups of sweet osmanthus formed a paraphyletic clade, implying that cultivated sweet osmanthus might originate from several species.

Keywords

PhylogenyOsmanthusOleaceae rps16-trnQrpl32-trnL(UAG)psbJ-petA

Supplementary material

606_2011_445_MOESM1_ESM.doc (82 kb)
Supplementary material 1 (DOC 82 kb)
606_2011_445_MOESM2_ESM.doc (103 kb)
Supplementary material 2 (DOC 103 kb)

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Shi-Quan Guo
    • 1
  • Min Xiong
    • 1
  • Chun-Feng Ji
    • 2
  • Zhi-Rong Zhang
    • 1
    • 3
  • De-Zhu Li
    • 3
  • Zhi-Yong Zhang
    • 1
  1. 1.Laboratory of Subtropical BiodiversityJiangxi Agricultural UniversityNanchangChina
  2. 2.College of ForestryJiangxi Agricultural UniversityNanchangChina
  3. 3.Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species and Key Laboratory of Biodiversity and BiogeographyKunming Institute of Botany, Chinese Academy of SciencesKunmingChina