Phytotoxicity of Silver Ions

Abstract

Silver in the form of Ag⁺ is one of the most toxic heavy metals. At present the effect of silver on processes in plants is intensively investigated. The inhibition of action of ethene at the receptor level influences the membrane permeability and, therefore, intake of water and minerals. Inhibition of many plant enzymes and reactive oxygen species by Ag⁺ was found. On the other hand, plant species are able to form and deposit silver nanoparticles in their tissues. The effects of Ag⁺ on plants are specific, which makes them an important tool in study of plant physiology and in possible practical applications.