Fig. 2From: Metabolomics reveals arbuscular mycorrhizal fungi-mediated tolerance of walnut to soil droughtChanges in leaf water potential of Juglans regia inoculated with Diversispora spurca under well-watered and drought stress conditions. Data (means ± SD, n = 4) followed by different letters above the bars indicate significant (P < 0.05) differences. The abbreviations were shown in Fig. 1Back to article page