Fig. 6

The effects of various FRDP on cucumber growth. a The values of the root physiological parameters of cucumber seedlings after being inoculated with KO (KO1, KO2) and OE (OE1, OE2), with wild-type used as a control. b The SPAD, stem diameter, root fresh weight and shoot fresh weight of cucumber seedlings after being treated by TgSWO at different concentrations. c, d Comparison of the SPAD, stem diameter, root fresh weight and shoot fresh weight values of cucumber seedlings in the different treatments. e, f The effects of the various FRDP on the cucumber growth, and the treatments, which included TgSWO (15 µM), ΔCBD (7 µM), ΔYoaJ (10 µM) and CK (without any proteins). g The growth conditions of the cucumber under the different treatments. h, i The effects of the various FRDP on the cucumber growth, and the parameters of root surface area, root tips, and total root length were determined to evaluate the growth promotion of the cucumber seedlings. All results were representative of three independent experiments, and each bar represents the mean of three biological replicates with SE, and statistically significant difference as evaluated by one-way ANOVA: *P < 0.05; **P < 0.01, ***P < 0.001