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Collaborative project: Development of monitoring techniques (air, soil) for the identification of phytoplasma diseases in vineyards with focus on the quarantine pest Flavescence dorée phytoplasma - subproject A (PhytoMo)

Project


Project code: 2818718A19
Contract period: 15.04.2021 - 14.06.2024
Budget: 585,542 Euro
Purpose of research: Applied research
Keywords: quarantine pathogens, remote sensing, plant diseases (virusus, bacteria, fungi, phytoplasma), crop protection, plant health, viticulture (winery), vine, other hardwood

Phytoplasmas, the causal agents of grapevine yellows diseases, are of great economic importance in viticulture. They are disseminated via contaminated propagation material and transmitted locally by phloem-sucking leafhoppers. While Bois noir (BN) is widespread, Germany is currently considered free of Flavescence dorée (FD) and its vector Scaphoideus titanus. As a consequence of changing climatic conditions, the disease and its vector are extending their range to the north, directly threatening the Southern German wine-growing regions. The vector has been established in Alsace since 2016 and thus in close proximity to German wine-growing regions. Monitoring measures with regard to FD-infected vines and the vector S. titanus are therefore essential. New phytosanitary regulations require a systematic monitoring. Furthermore, intensive monitoring of vineyards is required as a preventive measure wherever S. titanus is present, since FD outbreaks can originate from single infected vines in the presence of this vector. Since FD phytoplasmas are derived from certain types of the 16SrV phytoplasmas widely distributed in native alders, it is assumed that few infections could be caused by occasional transmission of phytoplasmas from alder.

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