TABLE 5.
Disk diffusion susceptibility testing of PNT activities against Fusarium spp. under different oxygen conditions
| Fusarium sp. (no. of isolates) | GMa ± SD of the radii (mm) of the zones of inhibition caused by PNTb
|
||
|---|---|---|---|
| Aerobic conditions | Microaerophilic conditions | Anaerobic conditions | |
| All Fusarium spp. (10) | 10.267 ± 3.829c | 17.283 ± 3.695 | 20.783 ± 5.168c |
| F. solani (5) | 5.867 ± 2.694d,e | 13.2 ± 3.532 | 16.6 ± 3.227e |
| Non-F. solani (5) | 14.66 ± 1.65d,f | 21.367 ± 2.162 | 24.967 ± 2.434f |
GM, geometric mean.
Each disk contained 8.3 μl of PNT (from a stock solution of 60 mg/ml).
P < 0.05 for the radii of the zones of growth inhibition caused by PNT against all Fusarium spp. tested under aerobic conditions versus those under anaerobic conditions.
P < 0.05 for the radii of the zones of growth inhibition caused by PNT against F. solani isolates versus non-F. solani Fusarium isolates in room air.
P < 0.05 for the radii of the zones of growth inhibition caused by PNT against F. solani isolates under aerobic conditions versus those under anaerobic conditions.
P < 0.05 for the radii of the zones of growth inhibition caused by PNT against non-F. solani Fusarium isolates under aerobic conditions versus those under anaerobic conditions.