Please use this identifier to cite or link to this item:
Title: Nanoscale copper in the soil-plant system - toxicity and underlying potential mechanisms
Author: Anjum, Naser A.
Adam, Vojtech
Kizek, Rene
Duarte, Armando C.
Pereira, Eduarda
Iqbal, Muhammad
Lukatkin, Alexander S.
Ahmad, Iqbal
Keywords: Copper
Metal toxicity
Soil–plant system
Plant tolerance
Issue Date: 2015
Publisher: Elsevier
Abstract: Nanoscale copper particles (nano-Cu) are used in many antimicrobial formulations and products for their antimicrobial activity. They may enter deliberately and/or accidentally into terrestrial environments including soils. Being the major ‘eco-receptors’ of nanoscale particles in the terrestrial ecosystem, soil–microbiota and plants (the soil–plant system) have been used as a model to dissect the potential impact of these particles on the environmental and human health. In the soil–plant system, the plant can be an indirect non-target organism of the soil-associated nano-Cu that may in turn affect plant-based products and their consumers. By all accounts, information pertaining to nano-Cu toxicity and the underlying potential mechanisms in the soil–plant system remains scanty, deficient and little discussed. Therefore, based on some recent reports from (bio)chemical, molecular and genetic studies of nano-Cu versus soil–plant system, this article: (i) overviews the status, chemistry and toxicity of nano-Cu in soil and plants, (ii) discusses critically the poorly understood potential mechanisms of nano-Cu toxicity and tolerance both in soil–microbiota and plants, and (iii) proposes future research directions. It appears from studies hitherto made that the uncontrolled generation and inefficient metabolism of reactive oxygen species through different reactions are the major factors underpinning the overall nano-Cu consequences in both the systems. However, it is not clear whether the nano-Cu or the ion released from it is the cause of the toxicity. We advocate to intensify the multi-approach studies focused at a complete characterization of the nano-Cu, its toxicity (during life cycles of the least-explored soil–microbiota and plants), and behavior in an environmentally relevant terrestrial exposure setting. Such studies may help to obtain a deeper insight into nano-Cu actions and address adequately the nano-Cu-associated safety concerns in the ‘soil–plant system’.
Peer review: yes
DOI: 10.1016/j.envres.2015.02.019
ISSN: 0013-9351
Appears in Collections:CESAM - Artigos

Files in This Item:
File Description SizeFormat 
Anjum et al. - 2015 - Nanoscale copper in the soil-plant system - toxici.pdf2.06 MBAdobe PDFrestrictedAccess

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.