Hyaloperonospora

Genus of single-celled organisms

Hyaloperonospora is a genus of oomycete, obligate, plant pathogens that was originally considered to be part of Peronospora. Species in this group produce a disease called downy mildew and can infect many important crops. From the 19 downy mildew producing genera, Hyaloperonospora has been grouped with Perofascia in the brassicolous downy mildews. In the group of downy mildews, Hyaloperonospora is the third biggest genus. The most famous species in the genus is the Hyaloperonospora parasitica, or also known as Hyaloperonospora arabidopsis. This species has become a model organism from its ability to infect the model plant Arabidopsis thaliana. It is used to study plant-pathogen interactions, and is currently the only Hyaloperonospora species that has an assembled genome.

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