| esistance was induced in cucumber plants by treatment with selected agents. The following were applied, in one application, to different plants, one or three days before a challenging inoculation: D-alanine, DL-amino-n-butyric acid, 6-benzylaminopurine, silicic acid, acetylsalicylic acid, 2,6-dichloro-isonicotinic acid (INA), or Pseudomonas syringae pv. syringae (Pss). The first five of these induced local resistance; INA and Pss induced both local and systemic resistance. INA and Pss treatment led to an increase in soluble, ionically wall-bound and covalently wall-bound peroxidase activity. Particularly noteworthy were increases in activity of two fast moving isozymes of soluble peroxidase... |
