Revision of Plasmopara (Oomycota,Peronosporales) parasitic to Impatiens |
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| Authors: | Marlena Görg Sebastian Ploch Julia Kruse Volker Kummer Fabian Runge Young-Joon Choi Marco Thines |
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| Affiliation: | 1.Department of Biological Sciences, Institute of Ecology, Evolution and Diversity,Goethe University Frankfurt am Main,Frankfurt am Main,Germany;2.Senckenberg Biodiversity and Climate Research Centre,Frankfurt am Main,Germany;3.Institute of Biochemistry and Biology,University of Potsdam,Potsdam,Germany;4.College of Natural Sciences, Department of Biology,Kunsan National University,Gunsan,South Korea;5.Integrative Fungal Research Cluster (IPF),Frankfurt am Main,Germany |
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| Abstract: | The oomycete Plasmopara obducens was first described on wild Impatiens noli-tangere in Germany in 1877. About 125 years later the first occurrence of P. obducens on cultivated I. walleriana in the United Kingdom was reported, and a worldwide epidemic followed. Although this pathogen is a major threat for ornamental busy lizzy, the identity of the pathogen remained unconfirmed and the high host specificity observed for the genus Plasmopara cast doubts regarding its determination as P. obducens. In this study, using multigene phylogenies and morphological investigation, it is revealed that P. obducens on I. noli-tangere is not the conspecific with the pathogen affecting I. walleriana and another ornamental balsam, I. balsamina. As a consequence, the new names P. destructor and P. velutina are introduced for the pathogens of I. walleriana and I. balsamina, respectively. |
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