Article

Mycological Progress

, Volume 3, Issue 2, pp 83-94

Phylogeny of Hyaloperonospora based on nuclear ribosomal internal transcribed spacer sequences

  • Markus GökerAffiliated withLehrstuhl für Spezielle Botanik und Mykologie, Botanisches Institut, Universität Tübingen Email author 
  • , Alexandra RiethmüllerAffiliated withFachgebiet Ökologie, Fachbereich 18 Naturwissenschaften, Universität Kassel
  • , Hermann VoglmayrAffiliated withInstitut für Botanik, Universität Wien
  • , Michael WeissAffiliated withLehrstuhl für Spezielle Botanik und Mykologie, Botanisches Institut, Universität Tübingen
  • , Franz OberwinklerAffiliated withLehrstuhl für Spezielle Botanik und Mykologie, Botanisches Institut, Universität Tübingen

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Abstract

Phylogenetic relationships in Hyaloperonospora (Oomycetes) were investigated by molecular analyses using internal transcribed spacer (ITS) sequences and collections from different host plants. Trees were inferred with Bayesian Markov chain Monte Carlo, neighbor-joining and maximum parsimony methods and rooted with Perofascia. The results are discussed with respect to host taxonomy and species concepts of downy mildews from the literature. Molecular data mainly support the use of narrow species delimitations and host range as a taxonomic marker. Hyaloperonospora brassicae turns out to be a non-monophyletic assemblage of different species. New combinations are proposed in accordance with the phylogenetic trees.