2. Leaves: Sensing Herbivore Saliva
When insects nibble on leaves, plants can “taste” specific chemicals found in the herbivore’s saliva.
This remarkable ability triggers a surge of defensive responses, like producing bitter compounds or potent toxins to deter further feeding.
Tomato plants are especially skilled at this, swiftly ramping up their chemical arsenal after an attack.
Amazingly, some plants can even send chemical signals to warn their neighbors of danger. Read more