The Impact of Elsinoeeuro ampelina Infection on Key Metabolic Properties in Vitis vinifera 'Red Globe' Berries via Multiomics Approaches

Grape anthracnose caused by Elsinoeeuro ampelina (Shear) is one of the most serious fungal diseases that lead to the quality reduction and yield losses of grape (Vitis vinifera 'Red Globe') berries. In the present study, metabolome and transcriptome analyses were conducted using grape berries in the field after infection with E. ampelina at 7, 10, and 13 days to identify the metabolic properties of berries. In total, 132 metabolites with significant differences and 6,877 differentially expressed genes were detected and shared by three comparisons. The analyses demonstrated that phenylpropanoid, flavonoid, stilbenoid, and nucleotide metabolisms were enriched in E. ampelina-infected grape berries but not amino acid metabolism. Phenolamide, terpene, and polyphenole contents also accumulated during E. ampelina infection. The results provided evidence of the enhancement of secondary metabolites such as resveratrol, a-viniferin, e-viniferin, and lignins involved in plant defense. The results showed the plant defense-associated metabolic reprogramming caused by E. ampelina infection in grape berry and provided a global metabolic mechanism under E. ampelina stimulation.

Automated summary

In this study, metabolome and transcriptome analyses were conducted to identify the metabolic properties of grape berries infected with Elsinoeeuro ampelina. The results showed that phenylpropanoid, flavonoid, stilbenoid, and nucleotide metabolisms were enriched, and secondary metabolites involved in plant defense accumulated in the infected berries.