Silicon Induced Defense Mechanisms and Pathways of Host Resistance for Insect Pests of Field and Horticultural Crops

Abstract

The application of Silicon modulates the plant defense mechanism by signaling secondary defense metabolites activating signal transduction pathways further triggering the HIPVs which in turn attracts natural enemies thereby suppressing the pest population. Continuous mono culturing of high yielding varieties with intensive cultural practices lead to depletion of available Si in soils and hence exogenous application of Si sources is necessary. Exploiting plant resistance and strengthening the induced defenses through Si and PGR could represent an effective viable alternative to synthetic insecticides that could form an efficient tactic in integrated pest management including biological control. In this context, we underscore recent advancements in understanding Si-mediated enhancement of plant resistance against pests, emphasizing the significance of these findings for potential incorporation into future strategies for crop protection.