In herbicide action, which type disrupts biochemical pathways related to protein synthesis?

The type of herbicide that disrupts biochemical pathways related to protein synthesis is EPSP inhibitors. These inhibitors target the shikimic acid pathway, which is essential for the synthesis of aromatic amino acids in plants and some microorganisms. By inhibiting the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), these herbicides prevent the production of vital amino acids like phenylalanine, tyrosine, and tryptophan, which are crucial for protein synthesis and the overall growth and development of the plant.

This mechanism explains why EPSP inhibitors are effective in controlling a wide range of broadleaf weeds, as they effectively starve the weeds of essential proteins needed for their survival. The other types of herbicides mentioned target different biochemical pathways or processes and therefore do not directly affect protein synthesis in the same manner.