Fig. 5

Salt tolerance of PtrA/NINV-overexpressing transgenic plants. a-b Growth performance (a) and total root length (b) of in vitro seedlings of transgenic lines and wild type (WT) on MS medium without or with salt (100, and 200 mM NaCl) (n = 3). c, d Comparison between one-month-old transgenic lines and WT plants grown in a hydroponic solution without (c) or with 150 mM NaCl (d). (n = 3). e-f Dry weight of leaves (e) and roots (f) of hydroponically growing plants. (n = 3). g-h Comparison of leaf disk phenotypes (g) and chlorophyll contents (h) between transgenic lines and WT immersed into water or salt solutions (300 and 400 mM NaCl) for three days (n = 5). Bar = 1 cm (a, b) or 5 cm (c, d, g). Statistically significant differences between the transgenic lines and WT under the same conditions are shown (*P < 0.05, **P < 0.01, ***P < 0.001)