Mode of Action
Mycoparasitism - Pythium oligandrum is able to attack directly a plant pathogenic fungus and/or an oomycete. A direct mycoparasitism is a key component of the antagonistic process. Cell-wall-degrading enzymes produced by Pythium oligandrum are able to decompose hyphae of plant pathogens.
Induced resistance – Pythium oligandrum is able to produce elicitor-type of metabolites (oligandrin). They stimulate a number of physical and biochemical defense mechanisms in plants, restricting pathogen penetration and development in the host tissues.
Growth stimulation – Pythium oligandrum is able to produce auxin-like compounds, with plant growth-stimulating activity (tryptamine - TNH2).