Fig. 6
From: Genomic basis underlying the metabolome-mediated drought adaptation of maize
ZmGLK44 and Trp positively regulated maize drought tolerance. a–d The growth of B73 (a) and B104 (c) plants before Trp treatments (upper panels) and after Trp treatments followed by drought stress (bottom panels), and survival rates of Trp-treated B73 (b) and B104 (d) plants grown under DS conditions. The control treatments (CKs) were sprayed with 0.1% tween-20. e Growth of positive (+) and negative (−) ZmGLK44 transgenic plants before drought stress (upper panels) and re-watered after drought stress (lower panels). Two independent transgenic lines #1 and #10 are illustrated. f Photosynthetic rates (AN), transpiration rates (E), water use efficiencies (WUE, AN/E), and chlorophyll of the transgenic lines #1 and #10 without drought stress. g AN, E, WUE (AN/E), chlorophyll, ion leakage, and survival rates of transgenic lines #1 and #10 after drought stress. Error bars in f and g: s.e average stand deviations based on biological repeats (n = 9); statistical significance was determined by a two-sided t test: *P < 0.05, **P < 0.01