Table 1. Populations of Ph6-gfp in ryegrass roots, shoots, and culture solution as determined by counting the CFU on plates. After inoculation for 3–15 days, the quantification of Ph6-gfp within plant roots and shoots was performed by counting the CFU on plates containing two antibiotics (50 mg·L⁻¹ Cm and 50 mg·L⁻¹ Km), and cell counts of strain Ph6-gfp were taken under UV light (green fluorescent colonies). In addition, strain Ph6-gfp could also be re-isolated and released into culture solution.

Time (Days)	Root (Log CFU·g−1)	Shoot (Log CFU·g−1)	Culture solution (Log CFU·mL−1)
3	5.66 ± 0.04	4.07 ± 0.05	4.78 ± 0.07
6	5.79 ± 0.03	4.60 ± 0.04	6.02 ± 0.08
9	5.70 ± 0.02	4.08 ± 0.13	5.96 ± 0.07
12	5.60 ± 0.04	3.94 ± 0.08	5.02 ± 0.03
15	5.51 ± 0.05	3.65 ± 0.10	4.90 ± 0.02