Table 1.
Percent germination of P. larvae spores (±SE) after treatment with indole and phenol analogs
| Compound | Germination (%) | SE | Compound | Germination (%) | SE |
|---|---|---|---|---|---|
| Control | 100.0 | 1.9 | 19 | 98.4 | 4.1 |
| 01 | 56.8 | 2.9 | 20 | 97.3 | 3.2 |
| 02 | 47.6 | 3.6 | 21 | 77.3 | 6.4 |
| 03 | 97.6 | 2.7 | 22 | 87.1 | 6.9 |
| 04 | 99.2 | 1.6 | 23 | 93.6 | 5.0 |
| 05 | 100.4 | 1.4 | 24 | 70.3 | 2.5 |
| 06 | 98.9 | 1.9 | 25 | 99.0 | 1.0 |
| 07 | 100.1 | 1.5 | 26 | 81.4 | 8.8 |
| 08 | 97.7 | 2.3 | 27 | 101.7 | 5.7 |
| 09 | 91.3 | 8.9 | 28 | 24.8 | 9.8 |
| 10 | 96.3 | 2.0 | 29 | 37.1 | 14.4 |
| 11 | 91.7 | 3.9 | 30 | 1.5 | 0.5 |
| 12 | 94.0 | 4.7 | 31 | 0.0 | 0.5 |
| 13 | 93.9 | 5.5 | 32 | 50.2 | 10.3 |
| 14 | 101.3 | 2.6 | 33 | 0.3 | 0.2 |
| 15 | 92.8 | 3.1 | 34 | 1.2 | 0.5 |
| 16 | 62.5 | 9.3 | 35 | 0.6 | 0.1 |
| 17 | 93.7 | 3.6 | 36 | 0.0 | 0.3 |
| 18 | 89.1 | 1.9 | 37 | 17.4 | 1.4 |
P. larvae spores were incubated with 400 µM of an indole or phenol analog (Fig. 1) for 15 min prior to the addition of 3,000 µM l-tyrosine and 3,000 µM uric acid. Germination rates for all conditions were divided by the uninhibited maximum germination rate obtained by treating spores with 3,000 µM l-tyrosine plus 3,000 µM uric acid (control) and are reported as percent germination. Standard errors (SE) were calculated from at least six independent measurements.