Molecular Plant Pathology (2021) 22, 755-768

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Savithri Purayannur, David H. Gent, Timothy D. Miles, Sebastjan Radisek and Lina M. Quesada-Ocampo (2021)
The hop downy mildew pathogen Pseudoperonospora humuli
Molecular Plant Pathology 22 (7), 755-768
Abstract: Pseudoperonospora humuli is an obligate biotrophic oomycete that causes downy mildew, one of the most devastating diseases of cultivated hop, Humulus lupulus. Downy mildew occurs in all production areas of the crop in the Northern Hemisphere and Argentina. The pathogen overwinters in hop crowns and roots, and causes considerable crop loss. Downy mildew is managed by sanitation practices, planting of resistant cultivars, and fungicide applications. However, the scarcity of sources of host resistance and fungicide resistance in pathogen populations complicates disease management. This review summarizes the current knowledge on the symptoms of the disease, life cycle, virulence factors, and management of hop downy mildew, including various forecasting systems available in the world. Additionally, recent developments in genomics and effector discovery, and the future prospects of using such resources in successful disease management are also discussed.
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Database assignments for author(s): David H. Gent

Research topic(s) for pests/diseases/weeds:

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Pseudoperonospora humuli Hop (Humulus lupulus) Argentina