Tuesday, January 11, 2011

Mechanisms of Antifungal Action of Trichoderma:Enzymes

Its quite a long time I have posted anything on this blog. There were certain technical reasons for not posting the anything. Now the problems seams to be resolved therefore I shall be continuing on Trichoderma a Magical Plant Health Manager.

Most of the pathogenic fungi contain chitin and Beta-glucans in their cell walls. Dissolution or damage of these structural polymers has adverse effects on the growth of these fungi. Recent research work has implicated a major role of enzymes in biological control by Trichoderma species and the secretion of enzymes is reported to be an integral step of the mycoparasitic process of Trichoderma. Trichoderma species secrete a number of hydrolytic enzymes, which includes chitinases, proteases, cellulases, glucanases and xylanases. Chitinases and beta-1,3 glucanases secreted by T. harzianum plays an important role in degrading hyphae of S. rolfsii. Various enzymes that are present in the different Trichderma species includes protease, beta-1,4-glucanases, exo alpha-1,3- glucanase (AGN 13.1).

Dear Sharad as you have suggested that I shall write on Apple Diseases one by one, surely I shall be writing after finishing off this topic. Hope you will bear with me....