Evidence map›Paper›PMID 25741363›Full record

ArticleFrontiers in genetics2015

Rapid evolution of silver nanoparticle resistance in Escherichia coli.

Joseph L Graves, Mehrdad Tajkarimi, Quincy Cunningham, Adero Campbell, Herve Nonga, Scott H Harrison, Jeffrey E Barrick

Open access · goldAbstract read
In one paragraph

Article in Frontiers in genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed
8.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

114 citing papers in PubMed, 296 citations in OpenAlex.

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  14. Evolution of cross-tolerance to metals in yeast.Proceedings of the National Academy of Sciences of the United States of America · 2025
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54 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 1 country.

Joseph L GravesDepartment of Nanoengineering, Joint School for Nanoscience and Nanoengineering, North Carolina Agricultural and Technical State University/University of North Carolina Greensboro, NC, USA.
Mehrdad TajkarimiDepartment of Nanoscience, Joint School for Nanoscience and Nanoengineering, North Carolina Agricultural and Technical State University/University of North Carolina Greensboro, NC, USA.
Quincy CunninghamDepartment of Biology, North Carolina Agricultural and Technical State University Greensboro, NC, USA.
Adero CampbellDepartment of Biology, Bennett College Greensboro, NC, USA.
Herve NongaStudent Research Opportunity Program, Michigan State University East Lansing, MI, USA.
Scott H HarrisonDepartment of Biology, North Carolina Agricultural and Technical State University Greensboro, NC, USA.
Jeffrey E BarrickDepartment of Molecular Biosciences, The University of Texas at Austin Austin, TX, USA.
Bennett College · USMichigan State University · USNorth Carolina Agricultural and Technical State University · USThe University of Texas at Austin · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The recent exponential increase in the use of engineered nanoparticles (eNPs) means both greater intentional and unintentional exposure of eNPs to microbes. Intentional use includes the use of eNPs as biocides. Unintentional exposure results from the fact that eNPs are included in a variety of commercial products (paints, sunscreens, cosmetics). Many of these eNPs are composed of heavy metals or metal oxides such as silver, gold, zinc, titanium dioxide, and zinc oxide. It is thought that since metallic/metallic oxide NPs impact so many aspects of bacterial physiology that it will difficult for bacteria to evolve resistance to them. This study utilized laboratory experimental evolution to evolve silver nanoparticle (AgNP) resistance in the bacterium Escherichia coli (K-12 MG1655), a bacterium that does not harbor any known silver resistance elements. After 225 generations of exposure to the AgNP environment, the treatment populations demonstrated greater fitness vs. control strains as measured by optical density (OD) and colony forming units (CFU) in the presence of varying concentrations of 10 nm citrate-coated silver nanoparticles (AgNP) or silver nitrate (AgNO3). Genomic analysis shows that changes associated with AgNP resistance were already accumulating within the treatment populations by generation 100, and by generation 200 three mutations had swept to high frequency in the AgNP resistance stocks. This study indicates that despite previous claims to the contrary bacteria can easily evolve resistance to AgNPs, and this occurs by relatively simple genomic changes. These results indicate that care should be taken with regards to the use of eNPs as biocides as well as with regards to unintentional exposure of microbial communities to eNPs in waste products.

Indexed as

adaptationAgNPsE. colieNPsGenomics

Identifiers

PMID25741363
PMCPMC4330922
OpenAlexW2068150197

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.