Flavescence Dorée (FD) is a serious disease, ranked among grapevine yellows (GY), and detected since the 1950’s in France, then similar diseases were reported in other European countries (Stolbur for instance). The disease, caused by a phytoplasma, which is a quarantined organisms indexed on the A2 EPPO list (n°2009/297CE directive) is one of the most damaging diseases in the European vineyard, with strong economic consequences in the major wine-producing countries. The main known vector of FD is a leafhopper strictly associated with grapevine, who transmits the phytoplasma.
FD induce severe impacts, including yield losses and vine plant dieback. Without control measures, the disease spreads rapidly, affecting up to the totality of vines in a few years. Despite mandatory control in Europe for this disease, it is still spreading and requires permanent monitoring to detect new infected areas.