Table 3.
Anti-phytopathogenic activity of the nine co-culture extracts and their corresponding mono-cultures.
| Strain name | Co-culture partner | Medium | IC50 values against economically relevant phytopathogens (μg/mL) |
|||||
|---|---|---|---|---|---|---|---|---|
| X.c. | E.a. | P.s. | R.s. | M.o. | P.i. | |||
| Emericellopsis sp. | None | SA | 56 | >200 | >200 | >200 | 76 | 67 |
| M. oryzae | SA | 54 | >200 | >200 | >200 | 73 | 57 | |
| P. syringae | SA | 152 | >200 | >200 | >200 | 150 | 150 | |
| Hypoxylon sp. | None | PDA | >200 | >200 | >200 | 150 | 179 | 153 |
| M. oryzae | PDA | >200 | >200 | >200 | 180 | 128 | 157 | |
| Alternaria sp. | None | PDA | 32 | >200 | >200 | >200 | 127 | 117 |
| P. syringae | PDA | 28 | >200 | >200 | >200 | 119 | 115 | |
| Acremonium sp. | None | PDA | 44 | >200 | >200 | >200 | 23 | 52 |
| M. oryzae | PDA | 52 | >200 | >200 | >200 | 33 | 51 | |
| B. cinerea | PDA | 56 | >200 | >200 | >200 | 112 | 150 | |
| P. syringae | PDA | 69 | >200 | >200 | >200 | 110 | 115 | |
| Cosmospora sp. | None | PDA | 6 | >200 | 78 | 57 | 8 | 5 |
| M. oryzae | PDA | 15 | >200 | 150 | 131 | 29 | 6 | |
| P. syringae | PDA | 6 | >200 | 150 | 89 | 12 | 63 | |
| PDA (MC) | >200 | >200 | >200 | >200 | >200 | >200 | ||
| SA (MC) | >200 | >200 | >200 | >200 | >200 | >200 | ||
| K+ | 2.46 | 2.32 | 2.32 | 0.74 | 0.44 | 0.24 | ||
| Solvent control | >200 | >200 | >200 | >200 | >200 | >200 | ||
Mean values are based on triplicate measurements. Phytopathogens: X.c., X. campestris; E.a., E. amylovora; P.s., P. syringae; R.s., R. solanacearum; M.o., M. oryzae; P.i., P. infestans. Methanol was used as a solvent control. Positive control (K+) for X.c., E.a., and P.s. was 10 μM chloramphenicol; for R.s. 10 μM tetracycline, for M.o. 10 μM nystatin, for P.i. 10 μM cycloheximide; MC, represents agar media controls.