Trichoderma harzianum
A species of fungus used in agriculture and biotechnology
Trichoderma harzianum is a species of fungus in the genus Trichoderma, known for its role in biological control and biotechnology. It is widely used in agriculture for its ability to suppress plant pathogens and enhance plant growth.
Description[edit | edit source]
Trichoderma harzianum is a filamentous fungus that is commonly found in soil and on decaying plant material. It is characterized by its rapid growth and ability to produce a wide range of secondary metabolites. The fungus forms green or white colonies with a cottony texture.
Biological Control[edit | edit source]
Trichoderma harzianum is used as a biocontrol agent against various plant pathogens, including species of Fusarium, Rhizoctonia, and Pythium. It acts by competing for nutrients and space, producing antibiotics, and inducing systemic resistance in plants.
Mechanism of Action[edit | edit source]
The biocontrol activity of Trichoderma harzianum involves several mechanisms:
- Competition: It competes with pathogens for nutrients and colonization sites.
- Mycoparasitism: It directly attacks and parasitizes other fungi.
- Antibiosis: It produces antifungal compounds that inhibit pathogen growth.
- Induced Resistance: It triggers plant defense mechanisms, enhancing resistance to pathogens.
Applications in Agriculture[edit | edit source]
Trichoderma harzianum is applied to seeds, soil, or plants to protect against diseases and promote growth. It is used in the cultivation of various crops, including vegetables, fruits, and ornamentals.
Biotechnology[edit | edit source]
In addition to its agricultural uses, Trichoderma harzianum is employed in biotechnology for the production of enzymes such as cellulases and chitinases. These enzymes have applications in biofuel production, waste management, and food processing.
Related pages[edit | edit source]
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