European wheat striate mosaic

European wheat striate mosaic is a viral disease caused by the Tenuivirus eurotritici. This pathogen belongs to the Tenuivirus genus and significantly affects the metabolism of cereal crops, hindering their ability to perform photosynthesis and leading to substantial yield losses in agricultural production.

The primary hosts of this virus include various cereal species such as wheat, barley, and rye, as well as several wild grass species that serve as alternative hosts. The infection is particularly damaging during the vegetative stages of the plants, often leading to systemic disease development that encompasses the entire plant structure.

Symptoms typically manifest as chlorotic streaks or stripes running parallel to the leaf veins. Affected plants often exhibit stunted growth, excessive tillering with thin leaves, and poor spike development. In severe cases, the infected plants remain sterile, failing to produce viable grain, which drastically reduces total harvest volume.

The transmission of Tenuivirus eurotritici is facilitated by insect vectors, primarily leafhoppers of the Cicadellidae family. These insects acquire the virus by feeding on infected phloem tissue and can transmit it to healthy crops for the duration of their lifespan. Environmental conditions that favor the rapid reproduction and migration of leafhoppers lead to widespread infection outbreaks.

Effective management requires a multi-faceted strategy focused on vector control through targeted insecticide applications, especially on field margins. Preventive measures include the systematic removal of weeds that act as virus reservoirs, maintaining appropriate planting density, and selecting resistant varieties to mitigate the impact of the virus on farm profitability.