Author(s):

Sangeeta Mehta, S Gangopadhyay, Jagdish Prasad and Pawan Kumar Panwar

Abstract: The induction of defense related enzymes i.e. PO, PPO and protease in root and shoot tissues of mung bean using four antagonists viz., T. atroviride (Ta-JOB), T. viride (Tv-BKN), T. harzianum (Th-JU) and P. fluorescens (Pf-SIKR) were investigated at three different stages i.e. 15, 25 and 25 DAS under green house conditions. The antagonists T. harzianum (Th-JU) and T. viride (Tv-BKN), proved to be most effective in inducing the PO activity in both root and shoot tissues of mung bean genotype at all stages. The PPO activity was highest in T. viride (Tv-BKN) treatment followed by T. harzianum (Th-JU) in roots as well as in shoots at all stages of sampling in both M. phaseolina inoculated as well as uninoculated condition. Increase of protease activity was highest in T. harzianum (Th-JU) treatment followed by P. fluorescens (Pf-SIKR) treatment. The overall activity of enzymes in shoot samples was higher than root samples in both inoculated and uninoculated conditions.

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