Plasmopara elegantissima sp. nov. (Oomycota, Peronosporales), a Downy Mildew Species Specialized to Impatiens textori (Balsaminaceae)

Young Joon Choi, Marlena Görg, Hyeon Dong Shin, Marco Thines

Research output: Contribution to journalArticle

Abstract

Over the past 15 years, downy mildew became the most destructive foliar disease in cultivated Impatiens species (Balsaminaceae) worldwide. A previous study had revealed that the causal agent was not Plasmopara obducens (Oomycota, Peronosporales) but Plasmopara destructor on Impatiens walleriana, and Plasmopara velutina on Impatiens balsamina. This hints to a relatively high degree of specialization of Plasmopara on Balsaminaceae. Therefore, it was the aim of the present study to perform multigene phylogenetic analysis and detailed morphological investigation for several Korean downy mildew samples parasitic to cultivated I. walleriana, and I. balsamina, but also to a northeast Asian wild plant, Impatiens textori. It was revealed that I. textori harbors a new species, which is introduced and described here as Plasmopara elegantissima.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalMycobiology
DOIs
Publication statusPublished - 2020

Keywords

  • Peronosporaceae
  • allopatric speciation
  • cox2 mtDNA
  • multi-locus phylogeny
  • taxonomy

ASJC Scopus subject areas

  • Microbiology
  • Infectious Diseases

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