Trichoderma harzianum has strong resistance to plant pathogenic microorganisms. After colonization, Trichoderma harzianum can absorb the surplus nutrients in the soil that are not used by the root system.
Trichoderma harzianum has a strong competitiveness to compete for survival resources with diseases, can quickly produce a large number of spores, and has strong fecundity capacity. This type of fungus can produce a large number of enzymes and secondary metabolites that can inhibit plant pathogens.
The chitinase and other substances secreted by Trichoderma harzianum can degrade the cell walls of fungal diseases in soil, allowing the diseases to be preyed on by other soil microorganisms.
In addition, Trichoderma harzianum also has a hyperparasitic effect, which can penetrate the hyphae of pathogenic fungi, absorb nutrients, and kill them. After colonization in the rhizosphere of plants, Trichoderma harzianum forms a physical barrier for the root system, preventing the pathogen from invading the plant.
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