Table I.
Induction of T. versicolor haustoria by simple phenolics and quinones
| Compound | Root Tips with Haustoria
|
||
|---|---|---|---|
| 1.0 μm | 10 μm | 50 μm | |
| proportion | |||
| DMBQ | 0.31 ± 0.11 | 0.73 ± 0.17 | 0.65 ± 0.19 |
| p-Coumaric acid | 0.23 ± 0.02 | 0.29 ± 0.14 | 0.35 ± 0.20 |
| Vanillic acid | 0.00 ± 0.00 | 0.35 ± 0.02 | 0.78 ± 0.16 |
| Vanillin | 0.01 ± 0.03 | 0.16 ± 0.08 | 0.74 ± 0.12 |
| Syringic acid | 0.03 ± 0.03 | 0.04 ± 0.04 | 0.48 ± 0.16 |
| Syringaldehyde | 0.05 ± 0.07 | 0.10 ± 0.05 | 0.38 ± 0.08 |
| p-Hydroxybenzaldehyde | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.16 ± 0.14 |
| Ferulic acid | 0.00 ± 0.00 | 0.03 ± 0.02 | 0.16 ± 0.19 |
| Caffeic acid | 0.05 ± 0.05 | 0.01 ± 0.02 | 0.02 ± 0.03 |
| Sinapinic acid | 0.00 ± 0.00 | 0.05 ± 0.03 | 0.00 ± 0.00 |
| Salicylic acid | 0.03 ± 0.04 | 0.00 ± 0.00 | 0.00 ± 0.00 |
Compounds were diluted in water to the concentrations shown. Values are the means ± sd of three plates with six T. versicolor plants each (50–90 total root tips per treatment).