Figure 2.

Seed germination and growth promotion effect of the phyllospheric colonization of R. palustris GJ‐22.

A. The seed germination rates of three treatments were calculated based on 100 seeds 7 days after treatment. CK was ultrapure water.

B. The root and shoot lengths of nine treatments were calculated 21 days after treatment.

C. The dry mass of each whole plant was assessed after drying at 80°C for 7 days.

D. The phyllospheric colonization of the intrinsically antibiotic‐resistant (kanamycin and cycloheximide) strain GJ‐22‐1 was detected based on one gram of fresh leaf at different time points. The root and shoot length and dry mass data are expressed as the mean values with the standard deviations based on 100 plants in a representative experiment that was repeated four times with similar results. The seed germination rate and phyllospheric colonization data are expressed as the mean values with the standard deviations from four replicates. The different letters within the same data group indicate significant differences between the treatments as determined by Fisher's LSD (P = 0.05).