Author(s): S. A. DAR, A. B. WANI, MUSHTAQ, A. GANIE, A.A. KANDOO AND M.Y. WANI

Abstract: The chemical nature of plant phenolics may vary from a simple monomeric unit to highly polymerized structures of varying proportions of monomeric aglycon units. Phenolics are aromatic benzene ring compounds with one or more hydroxyl groups produced by the plants for protection against biotic stresses. The functions of phenolic compounds in plant physiology is difficult to overestimate. Since, they provide structural integrity and scaffolding support to plants. Importantly, phenolic phytoalexins secreted by wounded or otherwise perturbed plants, repel or kill many insect pests. Insects represent adaptive characters that have been subjected to natural selection during evolution. Plants synthesize a greater array of secondary compounds than animals because they cannot rely on physical mobility to escape their predators and have therefore evolved a chemical defence against such predators. This article, review the role of plant phenols and polyphenols, interactions and their concern to resistance mechanisms against biotic stresses.

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