« Back

Podosphaera mors-uvae

American gooseberry mildew

Description

Podosphaera mors-uvae is a fungal pathogen responsible for American gooseberry mildew (or powdery mildew of currant), a destructive disease affecting gooseberries and currants. This fungus produces a characteristic white powdery coating on leaves, young shoots, flowers, and fruits. As the infection progresses, affected plant parts may deform, leading to a decline in overall plant health and reduced yields. The fungus thrives in warm and humid conditions and can persist throughout the growing season. It overwinters in infected plant tissues and spreads quickly in favorable weather. Podosphaera mors-uvae is particularly harmful to gooseberries, causing significant damage, while on currants, it primarily affects the tips of new shoots. Proper plant care, including regular pruning and the use of fungicides, is essential to prevent and control the spread of the disease. There are resistand cultivars of gooseberry and currant on the market.

Symptom

Symptoms include white powdery patches on leaves, shoots, and fruits, leading to deformation of new growth and fruit, often resulting in reduced yields.

Tree Species: Gooseberries, Currant

Part of a plant- attacked: Leaf / Needle, Fruit / Seed

Pest significance: Very harmful

Pest Category: Fungi

Invasive Species: Yes

Present in EU: Yes