Figure 3

Effect of P. xiamenensis on disease resistance and heat stress survival. (A) Treatment with P. xiamenensis was evaluated for disease resistance enhancement against fish-pathogenic E. piscicida. After P. xiamenensis treatment, zebrafish larvae were challenged with E. piscicida. Mortality was recorded for 72 h post-exposure (hpe) and the relative percent survival was determined. Asterisk (*) indicates a significant difference in comparison to the non-infected control. (B) Enhancement of heat resistance was evaluated for zebrafish after P. xiamenensis treatment at 28 °C followed by heat stress exposure at 38 °C for 48 h. The mortality of fish larvae was evaluated. Statistical significance was set at p < 0.05.