Unraveling Urban Plant Strategies for Heavy Metal Uptake and Detoxification

Heavy metal pollution in urban environments is increasingly prevalent, threatening environmental quality and human health. Urban plants facilitate mitigating this pollution by absorbing and detoxifying heavy metals from their surroundings. This chapter explores how urban plants absorb and detoxify heavy metals to maintain cellular equilibrium. Heavy metal uptake in urban plants primarily occurs through root absorption from the soil and aerial deposition on plant surfaces. Heavy metals are transported throughout the plant once absorbed and accumulated in various organs. Urban plants employ various detoxifying mechanisms to mitigate heavy metal toxicity. These include chelation and complexation with organic molecules, activation of antioxidant defense systems to counteract oxidative stress, and efflux and sequestration processes to regulate intracellular metal concentrations. Understanding urban plants’ absorption and detoxification processes is crucial for developing strategies to reduce heavy metal pollution in urban settings. The phytoremediation potential of urban plants holds promise for improving environmental quality, safeguarding human health, and promoting sustainable urban ecosystems. Urban planners and policymakers may use this knowledge to identify appropriate plant species for urban greening initiatives, thereby enhancing environmental quality and minimizing human health risks in urban settlements. Incorporating phytoremediation into urban planning and landscaping efforts may effectively address heavy metal pollution while creating healthier and more resilient urban environments.