In a stress situation, plants activate complex mechanisms of response that lead to the expression of a protein group, called stress proteins, which perform the function of protecting the cell.
There is a wide range of stress proteins depending on if they are synthesized in response to heat (heat shock proteins, HSPs ), dehydration (water stress proteins, WSPs ), salinity (salt stress proteins, SSPs), anoxia (stress caused by lack of oxygen) (anaerobic proteins, ANPs), or pathogenic attack (pathogenesis-related, PRs) (Fritig et al., 1998), i.e. plants express a specific type of stress proteins for each stress situation.
The application of the characterized peptides of Bioibérica results in the expression of some of these stress proteins.
From the moment the plant receives the stimulation sign until the moment that stress proteins are synthesized, the following processes take place: identification of stress factor; synthesis of secondary metabolites that act as transduction signs; gene expression; and finally the synthesis of various stress proteins. Exogenous application of AminoAlexin ® and Inicium ® speeds up the defensive process and decreases the energetic cost required by plants to cope with these two specific stress factors. 
