Figure 2.

C Effect of P. agglomerans C1 and its metabolites on the root characteristics of tomato (Solanum lycopersicum L.) cuttings. (A): Effect of C1 culture (spent medium with cells), C1 metabolites (cell-free spent medium) and indole-3-butyric acid solution (IBA) application on total root surface of tomato cuttings 2-weeks after treatment. (B): Dose response showing the effect of C1 metabolites application on total root surface of tomato cuttings 2-weeks after treatment with 3, 6 or 12 mL/L of cell-free P. agglomerans C1 metabolites. (C): Differences of root abundance and appearance of tomato cuttings 2-weeks after immersion in a solution containing 0 (Control) or 6 mL/L of cell-free P. agglomerans C1 metabolites. The spent medium with cells and the cell-free spent medium contained an IAA concentration of 105 ± 10 μg mL⁻¹. Each data point is the mean ± SE of 10 replicates. Values with no letter in common significantly differ at p < 0.05 (Tukey HSD test).