A comparison of nrDNA ITS and ETS loci for phylogenetic inference in the Umbelliferae: An example from tribe Tordylieae

Maria D. Logacheva, Carmen M. Valiejo-Roman, Galina V. Degtjareva, Jenny M. Stratton, Stephen R. Downie, Tagir H. Samigullin, Michael G. Pimenov

Research output: Contribution to journalArticlepeer-review

Abstract

The Umbelliferae is a large and taxonomically complex family of flowering plants whose phylogenetic relationships, particularly at low taxonomic levels, are generally obscure based on current and widely used molecular markers. Thus, information on the phylogenetic utility of additional molecular markers at these levels is highly favorable. We investigate the utility of nuclear ribosomal DNA (nrDNA) external transcribed spacer (ETS) sequences for phylogenetic inference in Umbelliferae tribe Tordylieae, a group whose relationships have been previously difficult to resolve owing to low sequence variability, and compare the results to those obtained from the nrDNA internal transcribed spacer (ITS) region. We report that the ETS region evolves at a slightly faster rate and has a higher percentage of parsimony informative characters than that of ITS and all chloroplast DNA loci examined to date. The ETS region is a valuable phylogenetic marker in Umbelliferae for low level analysis, especially when used in combination with ITS.

Original languageEnglish (US)
Pages (from-to)471-476
Number of pages6
JournalMolecular Phylogenetics and Evolution
Volume57
Issue number1
DOIs
StatePublished - Oct 2010

Keywords

  • Apiaceae
  • ETS
  • Heracleum
  • ITS
  • Molecular phylogeny
  • Semenovia
  • Tetrataenium
  • Tordylieae
  • Umbelliferae

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics

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