Fig. 2

LCMS-based metabolite profiling illustrates distinct profile in miR156OE genotypes during drought stress. a Principal component analysis of metabolite profile in stem, b leaf, and c root tissues under drought stress; d metabolite features that are significantly different at p < 0.01 from EV plants in tissues of stem, e leaf, and f root tissues; g proportion of metabolite features that are significantly increased (≥ 1.5 log 2 fold change) or decreased (≤ − 1.5 log 2 fold change) relative to EV under drought stress; h relative levels of anthocyanin metabolites of peonidin 3-O-glucoside, PG, and i delphinidin 3-O-(6″-acetyl)-glucoside, DAG. The relative abundance of metabolites is normalized to an internal standard. Values are sample means ± SE, n = 4 individual plants. ANOVA p values are provided in Additional file 2: Table S5. 4. Significant difference in Post hoc Tukey multiple comparisons test is indicated with different letters