Biochemical and transcriptional changes in the phenyl-propanoid pathway of Flavescence dorée phytoplasma-infected and recoverd- grapevines.

Flavescence dorée is a quarantine disease of Vitis vinifera caused by a phytoplasma (class Mollicutes). Despite the great relevance, molecular basis of the disease and plant responses to infection are poorly understood. An interesting, though unknown, phenomenon of spontaneous remission of symptoms may occur in infected vines (recovered-vines). In the present work the biochemical and transcriptional changes of the phenyl-propanoid pathway in recovered, infected and healthy leaves of Nebbiolo and Barbera vines were studied during the vegetative season.