"We Polyversify Agriculture"


Active Substance

Pythium oligandrum is a microorganism that taxonomically belongs to the kingdom Chromalveolata and the family Oomycetes. Charles Drechsler (1943) was the first to describe Pythium oligandrum as the mycoparasite of the wide range of phytopathogenic fungal microorganisms. During the 1970’s, Dr. Dáša Veselý focused his research on development of Pythium oligandrum for plant protection uses. In the 1990’s, the company Biopreparáty, spol. s r.o. succeeded to formulate, register and commercialize Pythium oligandrum, strain M1, as the biological fungicide.

Mycoparasitism of pathogenic fungus Fusarium graminearum by Pythium oligandrum

Taxonomic clasification

Our plant protection products are available in following segments:


Home and Garden


Post harvest


Mode of Action 


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). 

This site uses cookies to help you find out how the site is used. In order to use cookies, you must first enable us.

Cookie settings
Technical cookies are essential for the proper functioning of the website and all the functions it offers. Cannot deactivate.
Analytics and advertising cookies allow us to measure the performance of our website and our advertising campaigns. By disabling, we lose the ability to analyze performance, optimize our actions and personalize.