Do plants have an immune system?

Although in a very simplified way, plants also have an immune system. This is composed of a series of substances that they produce, release and/or accumulate in their organs following a stimulus.

The stimuli can be the most disparate: from the attack of an insect that chews the leaves; to a heat wave; lack of water or a temporary increase in salinity; to a transient lowering of temperatures; the temporary presence of electromagnetic radiation accompanied by ultraviolet or infrared (i.e too much light and heat).

The perception of one of these solicitations triggers a small response in the plant's metabolism, which in turn activates a sort of alert state that will tend to disappear slowly over time. Indicatively in periods between a few days and a few weeks. The repetition of the stimuli will lead to an increase in the duration of the magnitude values.