FIG 2.

Pot experiments of the suppression of rice BLB disease by strain YL-1 and mutants. BLB-susceptible rice cultivar Jingang 30 (JG30) was inoculated with 50 ml culture broth of strain YL-1 and mutants (1 × 10⁸ CFU/ml) after being infected with Xoo using scissors dipped in a dilution of culture broth (1 × 10⁸ CFU/ml) of Xoo. Treatment with distilled liquid SM or LB medium was used as the control. Sterile water was used as the blank treatment. The pot experiments were conducted over a period of 2 months. (a) The first field trial was performed in June 2019. (b) The second field trial was performed in July 2019.