Metabolites in the sap of Cabernet Sauvignon (Cs) and Shiraz in irrigated plots. Values are the fold change Cs/Shiraz. Presented is the analysis of the leaves of irrigated plants sampled on day 4 of the experiment. Shown are metabolites that were significantly different (p-value < 0.05) between the cultivars in the irrigated plots on at least one of the sampling days and that showed similar trends throughout the experiment (Additional file 3: Table S3). Columns represent means ± SE (n = 6). The dashed line marks values of fold change equal to ‘one’, i.e., no change between relative metabolite contents of Shiraz and Cabernet Sauvignon cultivars.