Broad spectrum phytovaccine that improves the general condition of the plant, increases its strength and vigor, which allows to obtain a higher yield and harvest quality
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Active substance:
stemicol® is a phytovaccine based on chitooligosaccharides, fractions of molecules derived from chitin with a specific chain length. When the plant receptor proteins recognize the chitooligosaccharides, the innate immune response is activated, favoring local and systemic biochemical processes that improve the general state of the crop, optimizing the development and growth processes, which allows obtaining an increase in the yields and better harvest quality.
Chito-oligosaccharides are substances that are widely distributed in nature. They do not have any toxicity, are totally biodegradable and do not affect auxiliary fauna.
Degree of polymerization of the active substance
Not all chitosans or oligosaccharides derived from chitin activate the innate immune response in plants. Not all oligosaccharides derived from chitin are active. The oligosaccharide chain acts as if it were a key and, as such, it only enters certain locks, and can only be recognized by plant-specific proteins (cERK1).
Scientifically it has been demonstrated that the chito-oligasaccharides recognized by these receptor proteins and, therefore, capable of activating a response, have a degree of polymerization between 5 and 14 units. Outside this range, the response generated by the plant is very poor or even null.
The chito-oligosaccharides contained in stemicol have a molecular weight of less than 3000 Daltons and a degree of polymerization between 5 and 18 monomers, guaranteeing that the innate immune response is generated with ample guarantee.
How it works
Recognition of chito-oligosaccharides activates various molecular and physiological changes. Between seconds and minutes after recognition by the receptor there is an increase in the intracellular Ca + 2 concentration, the activation of MAPK kinase proteins that phosphorylate target proteins, including transcriptional factors that regulate the expression of defense genes WRKY33.
These transcriptional and biochemical changes have as an immediate consequence the strengthening of the plant cell wall, thanks to the deposit of structural substances such as callose or lignin, as well as the production of secondary metabolites with important functions for the development of the plant.
Benefits
→ They improve the general condition of the plant
→ They increase the vigor and strengthening of the plant, which allows to obtain a higher crop yield and harvest quality.
→ Its use allows reducing the use of chemical phytosanitary products, which facilitates a better commercialization of the residue-free production and, consequently, greater profitability.
→ They are natural, non-toxic substances, they do not leave residues, they are totally biodegradable and they do not affect the auxiliary fauna.
