Julia Kruse

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Oomycetes are a diverse group of eukaryotes in terrestrial, limnic and marine habitats worldwide and include several devastating plant pathogens, for example Phytophthora infestans (potato late blight). The cytochrome c oxidase subunit 2 gene (cox2) has been widely used for identification, taxonomy and phylogeny of various oomycete groups. However, recently(More)
The smut fungi (Ustilaginomycotina) are a highly diverse group, containing about 115 genera and 1700 species, most of which are biotrophic plant pathogens. As for other fungal groups, the ITS rDNA region is widely used to determine smut fungi at species level due to its high discriminatory power and for phylogenetic reconstructions within genera. So far,(More)
Geranium phaeum is a popular ornamental plant in Europe. Downy mildew disease caused by Plasmopara was found on this plant once 50 years ago in Poland, but at that time attributed to the native species, Plasmopara pusilla. Here we report the recurrence of downy mildew disease on G. phaeum in Germany. Molecular phylogenetic analysis and morphological(More)
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(More)
The Ustilaginomycotina, often collectively referred to as smut fungi, represent one of the three subphyla of the Basidiomycota. Smut fungi predominantly parasitize Angiosperms, are globally distributed, and contain several economically important pathogens. The most species-rich family of the smut fungi is the Ustilaginaceae. To investigate the molecular(More)
Leaves with typical symptoms of downy mildew were found on common agrimony in the Czech Republic in 2014 and 2015 and at several locations in Germany from 2010 to 2014. The causal agent of downy mildew of agrimony was often reported as Peronospora agrimoniae, but sometimes also as P. sparsa. Morphological characteristics of the pathogens found in both(More)
Arugula (or rocket; Eruca sativa) is a popular leafy vegetable often used as a salad. Downy mildew disease poses a major threat to the cultivation of this crop. Along with a quick expansion of the cultivated land of arugula, significant losses due to this disease are continuously reported worldwide. Previous studies have attributed arugula downy mildew to(More)
Yeasts of the now unused asexually typified genus Pseudozyma belong to the smut fungi (Ustilaginales) and are mostly believed to be apathogenic asexual yeasts derived from smut fungi that have lost pathogenicity on plants. However, phylogenetic studies have shown that most Pseudozyma species are phylogenetically close to smut fungi parasitic to plants,(More)
Smut fungi are globally distributed plant pathogens that infect agriculturally important crop plants such as maize or potato. To date, molecular studies on plant responses to smut fungi are challenging due to the genetic complexity of their host plants. Therefore, we set out to investigate the known smut fungus of Brassicaceae hosts, Thecaphora thlaspeos.(More)
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