Yellow stunting disorder

Cucurbit yellow stunting disorder virus

Infected cucurbit plants initially show a chlorotic (yellow) spotting, which eventually develops into a striking interveinal chlorosis (yellowing) in which the veins remain more or less green but the rest of the leaf turns bright yellow. Leaves will often roll upward and become brittle. Fruit on infected plants may appear normal but often have reduced levels of sugars; this results in poor marketability and economic loss. Symptoms of Cucurbit yellow stunting disorder virus infection can be confused with abiotic factors, such as nutrient deficiency.