Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/120327
Author(s): Fernandes J.P.
Mucha A.P.
Francisco T.
Gomes C.R.
Almeida C.M.R.
Title: Silver nanoparticles uptake by salt marsh plants – Implications for phytoremediation processes and effects in microbial community dynamics
Publisher: Elsevier
Issue Date: 2017
Abstract: This study investigated the uptake of silver nanoparticles (AgNPs) by a salt marsh plant, Phragmites australis, as well as AgNPs effects on rhizospheric microbial community, evaluating the implications for phytoremediation processes. Experiments were carried out with elutriate solution doped with Ag, either in ionic form or in NP form. Metal uptake was evaluated in plant tissues, elutriate solutions and sediments (by AAS) and microbial community was characterized in terms of bacterial community structure (evaluated by ARISA). Results showed Ag accumulation but only in plant belowground tissues and only in the absence of rhizosediment, the presence of sediment reducing Ag availability. But in plant roots Ag accumulation was higher when Ag was in NP form. Multivariate analysis of ARISA profiles showed significant effect of the absence/presence of Ag either in ionic or NP form on microbial community structure, although without significant differences among bacterial richness and diversity. Overall, P. australis can be useful for phytoremediation of medium contaminated with Ag, including with AgNPs. However, the presence of Ag in either forms affected the microbial community structure, which may cause disturbances in ecosystems function and compromise phytoremediation processes. Such considerations need to be address regarding environmental management strategies applied to the very important estuarine areas. Capsule The form in which the metal was added affected metal uptake by Phragmites australis and rhizosediment microbial community structure, which can affect phytoremediation. © 2017 Elsevier
Subject: Bacteria
Bioremediation
Ecology
Ecosystems
Environmental management
Histology
Metal nanoparticles
Microorganisms
Multivariant analysis
Nanoparticles
Social sciences
Tissue
Wetlands
Bacterial community structure
Environmental management strategy
Microbial community dynamics
Microbial community structures
Multi variate analysis
Phytoremediation
Silver nanoparticles
Silver nanoparticles (AgNps)
Silver
silver nanoparticle
metal nanoparticle
nanoparticle
silver
bioaccumulation
biological uptake
community response
environmental management
grass
microbial community
nanoparticle
phytoremediation
rhizosphere
saltmarsh
sediment pollution
silver
Article
bioaccumulation
community dynamics
community structure
degradation
environmental protection
limit of quantitation
metabolism
microbial community
microcosm
nonhuman
Phragmites australis
phytoremediation
rhizosphere
salt marsh
sediment
soil quality
species diversity
species richness
water quality
bioremediation
chemistry
plant root
Poaceae
wetland
Bacteria (microorganisms)
Phragmites australis
Biodegradation, Environmental
Metal Nanoparticles
Nanoparticles
Plant Roots
Poaceae
Silver
Wetlands
URI: https://hdl.handle.net/10216/120327
Source: Marine Pollution Bulletin, vol. 119(1), p. 176-183
Related Information: info:eu-repo/grantAgreement/FCT/5876/147268/PT
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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