Elicitor
As elicitors (also: inducers or mediators ) are described in Plant Physiology refers to substances that defenses against herbivores and pathogens initiate ( induce ).
An example of a defense reaction is the synthesis of phytoalexins .
Elicitors can be either endogenous or exogenous in origin. Endogenous elicitors serve as a signal between the cells (i.e. as a hormone ); Exogenous elicitors are substances that are secreted by other organisms and recognized by the plant.
- The following substances, for example, serve as endogenous elicitors:
- Jasmonic acid , salicylic acid , and systemin as endogenous signaling molecules
- Oligosaccharides and membrane proteins , upon dissolution of the cell wall by certain fungi arise