Deciphering transcriptomic and metabolomic wood responses to grapevine trunk diseases-associated fungi

摘要: Esca is one of the main grapevine trunk diseases affecting vineyards worldwide. Phaeoacremonium minimum and Phaeomoniella chlamydospora are thought to be two of the main causal agents of this disease. However, the molecular mechanisms underlying plant defense responses in the grapevine trunk against esca-associated pathogens are poorly understood. To provide a first glimpse on the trunk responses to P. minimum and P. chlamydospora, transcriptomic and metabolomic analyses were performed to compare and contrast host responses to these pathogens. Transcriptomic analysis revealed different gene expression reprogramming in the trunk in response to each fungus. Main significant differences were found among genes associated with Secondary Metabolism, Signaling and Hormone Signaling. An untargeted liquid chromatography–high resolution mass spectrometry metabolomic approach …