Exposure of engineered nanomaterials to plants: Insights into the physiological and biochemical responses-A review

Plant Physiol Biochem. 2017 Jan:110:236-264. doi: 10.1016/j.plaphy.2016.05.037. Epub 2016 May 28.

Abstract

Recent investigations show that carbon-based and metal-based engineered nanomaterials (ENMs), components of consumer goods and agricultural products, have the potential to build up in sediments and biosolid-amended agricultural soils. In addition, reports indicate that both carbon-based and metal-based ENMs affect plants differently at the physiological, biochemical, nutritional, and genetic levels. The toxicity threshold is species-dependent and responses to ENMs are driven by a series of factors including the nanomaterial characteristics and environmental conditions. Effects on the growth, physiological and biochemical traits, production and food quality, among others, have been reported. However, a complete understanding of the dynamics of interactions between plants and ENMs is not clear enough yet. This review presents recent publications on the physiological and biochemical effects that commercial carbon-based and metal-based ENMs have in terrestrial plants. This document focuses on crop plants because of their relevance in human nutrition and health. We have summarized the mechanisms of interaction between plants and ENMs as well as identified gaps in knowledge for future investigations.

Keywords: Accumulation; Crop plants; Engineered nanomaterials; ROS production; Toxicity; Uptake.

Publication types

  • Review

MeSH terms

  • Crops, Agricultural / chemistry*
  • Crops, Agricultural / drug effects
  • Crops, Agricultural / physiology
  • Diet
  • Environmental Monitoring / methods
  • Environmental Monitoring / standards
  • Food Analysis / methods
  • Food Analysis / standards
  • Humans
  • Metal Nanoparticles / chemistry
  • Metal Nanoparticles / standards
  • Metal Nanoparticles / toxicity
  • Nanostructures / chemistry*
  • Nanostructures / standards
  • Nanostructures / toxicity
  • Nutritive Value
  • Plants, Edible / chemistry*
  • Plants, Edible / drug effects
  • Plants, Edible / physiology
  • Soil Pollutants / chemistry*
  • Soil Pollutants / standards
  • Soil Pollutants / toxicity

Substances

  • Soil Pollutants