Normally, plants do not develop under optimal conditions throughout their life cycle, but undergo different adverse situations that cause different types of stress that prevent them from reaching maximum yield...
Unfavourable climate conditions, pathogen attacks and certain states of plant development trigger the expression of so-called stress proteins. From the moment the plant receives the stimulation signal until it synthesizes the stress-response proteins, several different processes take place: recognition of the stress factor, synthesis of secondary metabolites that act as transduction signals, expression of the genes and, finally, synthesis of the different stress proteins
One evolutionary way living organisms fight infections consists in the production of several peptides with antimicrobial activity. Recently, peptides with direct (especially on Gram-negative bacteria) and indirect antimicrobial activity, antifungal, anti-inflammatory and vasodilator activity have been discovered.
Use of Amino Acids in Agriculture
