Effect of Microgramma vaccinifolia rhizome lectin on survival and digestive enzymes of Nasutitermes corniger (Isoptera, Termitidae)

► MvRL, a thermostable lectin, was evaluated for termiticidal effect on Nasutitermes corniger. ► MvRL was highly toxic for workers and soldiers (LC50: 0.130 and 0.085 mg ml−1). ► Among all termiticidal lectins described, MvRL is the highest active so far. ► MvRL inhibited trypsin and stimulated acid phosphatase activities from termites. ► Thus, MvRL may cause physiological damage through modulation of enzyme activities.