Wheat streak mosaic virus

wheat streak

Wheat streak mosaic potyvirus

Worldwide

Widespread in wheat regions

2023-08-25

virus

China, Korea, Chile

Primarily a virus of wheat. Other grasses and grains, such as oats, rye, barley, and millet may act as reservoirs for the virus. Not common in maize, though it has been reported in some cultivars.

WSMV00

The wheat curl mite (Aceria tosichella,K.), is the only known vector for Wheat streak mosaic virus. When symptoms are present, confirm the causal agent with laboratory diagnoses. Symptoms of this disease may be similar to other viral diseases or inconspicuous under unfavorable climatic conditions or plant physiological stress, requiring thorough laboratory analysis. Latency resulting in asymptotic plants, though documented (WSMV00-4), is not common. Expression may vary with climatic conditions, plant genetics, physiological stress, and plant pathogen strain. Literature showing that random sampling of apparently healthy plants to detect latent populations of this pathogen has not been found.