Genetic Diversity of Flavescence Dorée Phytoplasmas at the Vineyard Scale.

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Rossi, Marika | Pegoraro, Mattia | Ripamonti, Matteo | Abbà, Simona | Beal, Dylan | Giraudo, Alessia | Veratti, Flavio | Malembic-Maher, Sylvie | Salar, Pascal | Bosco, Domenico | Marzachì, Cristina

Edité par CCSD ; American Society for Microbiology -

UMR BFP - Equipe Mollicutes. International audience. Flavescence dorée, a threatening disease of grapevine caused by FD phytoplasma (FDp), is distributed within the most important wine-producing areas of Europe and has severe effects on both vineyard productivity and landscape management. FDp is a quarantine pest in Europe, and despite the efforts to contain the pathogen, the disease is still spreading. In this work, new genetic markers for the fine genetic characterization of FDp at local scale are presented. Our findings improve the knowledge of FDp epidemiological cycle and offer the possibility of tracking the route of the FDp infection. In particular, due to its high genetic variability, one of the newly developed markers could be sufficient to track the origin of new infection foci, either from the wild areas or from nurseries.

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