Fig. 9From: Exogenous trehalose improves growth under limiting nitrogen through upregulation of nitrogen metabolismEffects of exogenous trehalose and nitrogen supply on plant dry mass (a), root to total dry matter ratio (b) and leaf area (c). Values represent the mean ± SE of 5 individual plants. Within each set of experiments, the different letters indicate significant differences (P < 0.05)Back to article page