Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa

Abstract The intensive applications of silver nanoparticles (AgNPs) inevitably cause continuous release of such materials into environments, as a consequence posing potential risks to microbial communities in engineered or natural ecosystems. However, the magnitude of antibacterial capacity of nanop...

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Autores principales:	Zhaoyu Chen, Ping Yang, Zhiguo Yuan, Jianhua Guo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/98e64eb0d4544874b71846da0988c7ed
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spelling	oai:doaj.org-article:98e64eb0d4544874b71846da0988c7ed2021-12-02T16:07:47ZAerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa10.1038/s41598-017-07989-w2045-2322https://doaj.org/article/98e64eb0d4544874b71846da0988c7ed2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07989-whttps://doaj.org/toc/2045-2322Abstract The intensive applications of silver nanoparticles (AgNPs) inevitably cause continuous release of such materials into environments, as a consequence posing potential risks to microbial communities in engineered or natural ecosystems. However, the magnitude of antibacterial capacity of nanoparticles is still inconclusive, owing to influential factors such as the size of nanoparticle, microbial species, or environmental conditions. To reveal whether the presence of air would alter AgNPs ecotoxicity, Pseudomonas aeruginosa PAO1, a facultative denitrifying bacterium and an opportunity pathogen, was used to study antibacterial assays under both anaerobic and aerobic conditions. The results indicate that the respiration status of P. aeruginosa affect the ecotoxicity of AgNPs. P. aeruginosa cultured under aerobic condition were more susceptible to AgNPs than that under anaerobic condition. Aerobic condition greatly enhanced bacteriostatic effects of AgNPs but not their bactericidal effects, as the ratio of viable but nonculturable (VBNC) bacteria remained above 90% when 5 mg L−1 AgNPs applied. Our findings offer further understanding for the degree of toxicity of nanoparticles on microbial ecosystems and underscore the importance of exposure condition (e.g. oxygen) in the mode of action of AgNPs.Zhaoyu ChenPing YangZhiguo YuanJianhua GuoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhaoyu Chen Ping Yang Zhiguo Yuan Jianhua Guo Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa
description	Abstract The intensive applications of silver nanoparticles (AgNPs) inevitably cause continuous release of such materials into environments, as a consequence posing potential risks to microbial communities in engineered or natural ecosystems. However, the magnitude of antibacterial capacity of nanoparticles is still inconclusive, owing to influential factors such as the size of nanoparticle, microbial species, or environmental conditions. To reveal whether the presence of air would alter AgNPs ecotoxicity, Pseudomonas aeruginosa PAO1, a facultative denitrifying bacterium and an opportunity pathogen, was used to study antibacterial assays under both anaerobic and aerobic conditions. The results indicate that the respiration status of P. aeruginosa affect the ecotoxicity of AgNPs. P. aeruginosa cultured under aerobic condition were more susceptible to AgNPs than that under anaerobic condition. Aerobic condition greatly enhanced bacteriostatic effects of AgNPs but not their bactericidal effects, as the ratio of viable but nonculturable (VBNC) bacteria remained above 90% when 5 mg L−1 AgNPs applied. Our findings offer further understanding for the degree of toxicity of nanoparticles on microbial ecosystems and underscore the importance of exposure condition (e.g. oxygen) in the mode of action of AgNPs.
format	article
author	Zhaoyu Chen Ping Yang Zhiguo Yuan Jianhua Guo
author_facet	Zhaoyu Chen Ping Yang Zhiguo Yuan Jianhua Guo
author_sort	Zhaoyu Chen
title	Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa
title_short	Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa
title_full	Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa
title_fullStr	Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa
title_full_unstemmed	Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa
title_sort	aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on pseudomonas aeruginosa
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/98e64eb0d4544874b71846da0988c7ed
work_keys_str_mv	AT zhaoyuchen aerobicconditionenhancesbacteriostaticeffectsofsilvernanoparticlesinaquaticenvironmentanantimicrobialstudyonpseudomonasaeruginosa AT pingyang aerobicconditionenhancesbacteriostaticeffectsofsilvernanoparticlesinaquaticenvironmentanantimicrobialstudyonpseudomonasaeruginosa AT zhiguoyuan aerobicconditionenhancesbacteriostaticeffectsofsilvernanoparticlesinaquaticenvironmentanantimicrobialstudyonpseudomonasaeruginosa AT jianhuaguo aerobicconditionenhancesbacteriostaticeffectsofsilvernanoparticlesinaquaticenvironmentanantimicrobialstudyonpseudomonasaeruginosa
_version_	1718384732998205440

Aerobic condition enhances bacteriostatic effects of silver nanoparticles in aquatic environment: an antimicrobial study on Pseudomonas aeruginosa

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