Effects of Surface Coating on the Bioactivity of Metal-Based Engineered Nanoparticles: Lessons Learned from Higher Plants

Abstract

Characteristics such as size, surface-to-volume ratio, and surface chemistry, among others, convey uniqueness to engineering nanoparticles (ENPs). The surface chemistry determines the stability and aggregation of ENPs and also constrains their applications, environmental fate, and interaction with living organisms. To avoid aggregation and improve stabilization, the surface chemistry of numerous ENPs has been modified through coating with several agents. However, the coating also changes their biointeractions. In this chapter we discuss literature concerning the uptake, translocation, accumulation, and physiological effects of surface-coated ENPs in economically important plants. We discussed existing information based on the type of ENP, coating agent, and species of plant. Negative and positive effects are discussed.