A comparison of the metabolomic response of grapevine to infection with ascomycete wood-infecting fungi

Fungi that cause grapevine trunk diseases, including Diplodia seriata, Eutypa lata, Neofusicoccum parvum, and Phaeomoniella chlamydospora, all colonize woody tissues, but lesions develop to different extents. Such variation is thought correspond fungal virulence, it may also reflect host metabolic responses limit colonization. From the stems of potted Vitis vinifera ‘Cabernet-Sauvignon’ in greenhouse, we measured wood quantified metabolites at lesion margins. Amino acids, sugars, phenolics, terpenoids were by appropriate chromatography techniques. At 3 months post-inoculation (MPI) from P. chlamydospora N. parvum larger than those D. seriata E. lata. Among pathogen treatments, compared controls, lower concentrations 0.5 MPI followed 2 higher some phenolic compounds. Lesion length did not correlate with primary metabolites, terpenoid concentrations.