Which among the following biocontrol agent is used in the treatment of plant disease ?

Trichoderma

The correct option  is 3 . Trichoderma

A biological control being developed for use in the treatment of plant disease is the fungus Trichoderma. Trichoderma species are free-living fungi that are very common in the root ecosystems. They are effective biocontrol agents of several plant pathogens .

Trichoderma is the biocontrol agent used in the treatment of plant diseases. Trichoderma is a genus of fungi that has been extensively studied and utilized for its antagonistic properties against various plant pathogens. It acts as a biocontrol agent by colonizing the rhizosphere and plant roots, where it competes with and suppresses the growth of pathogenic fungi.

Trichoderma species exhibit several mechanisms of action against plant pathogens, including mycoparasitism, antibiosis (production of antifungal compounds), and induction of plant defense responses. They can attack and destroy the cell walls of other fungi, releasing enzymes and toxic compounds that inhibit their growth and development.

By introducing Trichoderma into agricultural systems, it is possible to enhance the natural defense mechanisms of plants against diseases, reduce the reliance on chemical fungicides, and promote sustainable and eco-friendly approaches to disease management.