Paraquat is a quarternary nitrogen herbicide widely used for broadleaf weed control. It is a fastacting, non-selective compound, which destroys tissues of green plants on contact and by translocation within the plant. Paraquat exerts its herbicidal activity by interfering with the intracellular electron transfer systems in plants, thereby inhibiting reduction of NADP to NADPH during photosynthesis. This disruption leads to the formation of superoxide anion, singlet oxygen, as well as hydroxyl and peroxyl radicals. These reactive oxygen species (ROS) interact with the unsaturated lipids of membranes resulting in the destruction of plant organelles, inevitably leading to cell death