Metabolomic and cytological approaches to be4er understand grapevine trunk diseases disorders

International audience; Grapevine trunk diseases (GTDs) are devastaLng diseases involving xylem-inhabiLng fungi. Among them, Esca and Botryosphaeria dieback affect vineyards in major worldwide grape-producing areas. The causal fungi alter the woody ;ssues and could produce toxins that disturb the plant physiology, leading to chronic or apolecLc leaf symptoms. The unique effecLve fungicide against these diseases, sodium arsenite, is now prohibited because of toxicity. As GTDs are complex and sLll partly unknown, the idenLficaLon of protecLon strategies remain a deadlock. Global and targeted approaches were therefore conducted to