Table 2.
Minimal inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) of the endophytic extracts
| Endophytes | Extract | Minimum inhibitory and minimum bactericidal concentrations (mg/mL) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gram positive bacteria | Gram negative bacteria | ||||||||||||||||||||||
| Bs | Bt | Ef | Ml | Sa | MRSA | MRSE | Kp | Pa | Ab | Va | |||||||||||||
| MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | ||
| FG-Z6 | EtOAc | 1.563 | 3.125 | 0.195 | 0.781 | 1.563 | 3.125 | 3.125 | 6.250 | 0.781 | 1.563 | 1.563 | 6.250 | 1.563 | 3.125 | 0.781 | 1.563 | 0.781 | 3.125 | 1.563 | 3.125 | 3.125 | 6.250 |
| FG-Z9 | – | – | 0.781 | 3.125 | – | – | 0.781 | 6.250 | – | – | 0.781 | 3.125 | – | – | 0.391 | 12.50 | 0.781 | 12.50 | – | – | – | – | |
| FG-Z12 | 6.250 | 25.00 | 0.781 | 25.00 | 3.125 | 12.50 | 0.195 | 25.00 | 0.781 | 12.50 | 0.391 | 25.00 | – | – | 0.781 | 25.00 | 0.049 | 1.563 | – | – | 1.563 | 50.00 | |
| FG-Z15 | – | – | 0.781 | 3.125 | 1.563 | 12.50 | 6.250 | 12.50 | – | – | 0.328 | 1.313 | 1.563 | 1.563 | – | – | – | – | – | – | – | – | |
| FG-Z20 | – | – | 0.082 | 2.625 | – | – | – | – | 2.625 | 2.263 | 7.125 | 7.125 | – | – | – | – | 0.082 | 1.313 | 2.625 | 2.625 | – | – | |
| FG-Z21 | 1.563 | 3.125 | 7.125 | 7.125 | 1.563 | 1.563 | 0.195 | 0.781 | 7.125 | 14.25 | 0.098 | 0.195 | 1.563 | 1.563 | 0.781 | 3.125 | 0.391 | 0.781 | 7.125 | 7.125 | 0.391 | 0.781 | |
| FG-Z35 | 12.50 | 12.50 | 0.098 | 3.125 | – | – | – | – | – | – | – | – | – | – | – | – | 0.098 | 3.125 | – | – | – | – | |
| FG-Z36 | – | – | 0.195 | 0.781 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| FG-Z41 | – | – | – | – | 1.563 | 3.125 | 0.195 | 0.781 | 3.125 | 3.125 | – | – | – | – | 0.781 | 6.250 | 0.195 | 0.781 | – | – | 1.563 | 1.563 | |
| FG-Z5 | MeOH | – | – | 0.781 | 12.50 | 0.781 | 12.50 | – | – | 0.781 | 12.50 | – | – | – | – | – | – | 0.781 | 6.250 | 1.563 | 6.250 | 6.250 | 1.563 |
| FG-Z6 | – | – | – | – | 3.125 | 12.50 | – | – | 3.125 | 25.00 | – | – | – | – | 0.781 | 1.563 | 3.125 | 12.50 | 1.563 | 3.125 | 1.563 | 3.125 | |
| FG-Z12 | 3.125 | 3.125 | – | – | 3.125 | 3.125 | 0.098 | 0.195 | – | – | 1.563 | 3.125 | – | – | 3.125 | 3.125 | 6.250 | 6.250 | – | – | – | – | |
| FG-Z35 | – | – | – | – | – | – | – | – | 12.50 | 12.50 | – | – | – | – | 1.563 | 6.250 | – | – | 3.125 | 25.00 | – | – | |
| FG-X35 | – | – | – | – | – | – | – | – | – | – | 1.563 | 6.250 | – | – | – | – | – | – | – | – | – | – | |
| FG-X48 | – | – | 0.391 | – | 12.50 | 25.00 | – | – | – | – | – | – | – | – | – | – | 25.00 | 25.00 | – | – | – | – | |
| FG-X50 | – | – | 0.781 | – | – | – | – | – | – | – | – | – | 3.125 | – | – | – | – | – | – | – | – | – | |
| FG-Z4 | PE | 3.125 | 3.125 | – | – | – | – | 0.391 | 3.125 | – | – | 1.563 | 3.125 | – | – | – | – | 1.563 | 12.50 | – | – | – | – |
| FG-Z9 | – | – | – | – | 3.125 | 6.250 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| FG-Z12 | – | – | – | – | 1.563 | 3.125 | 0.391 | – | – | – | – | – | – | 25.00 | 6.250 | 6.250 | 3.125 | 3.125 | – | – | 6.250 | 6.250 | |
| Kan * | 0.025 | 0.025 | 0.125 | 19.5 | – | – | 12.5 | 19.5 | 25 | 25 | – | – | 15.625 | 19.5 | 25 | 25 | 12.5 | 19.5 | 6.25 | 9.8 | 25 | 25 | |
Bs-B, subtilis; Bt-B, thuringiensis; Ef-E, faecalis; Ml-M, luteus; Sa-S, aureus; Ab-A, bammannii; Kp-K, pneumonia; Ec-E, coli; Pa-P, aeruginosa; Va-V, alginolyticus, Positive control
*Kanamycin (40 µg/mL)
– indicates no antibacterial activity