Table 3.
Effect of temperature, medium composition and presence of extracellular fatty acids on DSF production by S. maltophilia strains E77 (rpf-1) and M30 (rpf-2).
| Experiment | Growth conditions | DSF production (μg/mL) | ||
|---|---|---|---|---|
| Medium | Temperature°C | E77 | M30 | |
| Temperature effect (LB) | LB | 20 | ND | ND |
| LB | 25 | 0.6±0.07 | ND | |
| LB | 30 | 1.4±0.2* | ND | |
| LB | 37 | 0.25±0.03 | ND | |
| LB | 42 | ND | ND | |
| Medium composition effect (30°C) | M9 | 30 | 0.3±0.03 | ND |
| BM2 | 30 | 0.4±0.03 | ND | |
| NYG | 30 | 1.1±0.15 | ND | |
| LB | 30 | 1.4±0.2* | ND | |
| Fatty acid supplementation effect (5 μM) | LB + 12:0 | 30 | 1.6±0.2 | ND |
| LB + 14:0 | 30 | 1.8±0.3 | ND | |
| LB + iso-15:0 | 30 | 2.4±0.4* | ND | |
| LB + 16:0 | 30 | 1.35±0.1 | ND | |
| LB + 18:0 | 30 | ND | ND | |
ND, Not detected.
*
p < 0.05 (One-Way ANOVA and post-test).