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dc.contributor.authorLu, Tao
dc.contributor.authorQu, Qian
dc.contributor.authorLavoie, Michel
dc.contributor.authorPan, Xiangjie
dc.contributor.authorPeijnenburg, W J G M
dc.contributor.authorZhou, Zhigao
dc.contributor.authorPan, Xiangliang
dc.contributor.authorCai, Zhiqiang
dc.contributor.authorQian, Haifeng
dc.date.accessioned2020-04-05T15:16:01Z
dc.date.available2020-04-05T15:16:01Z
dc.date.issued2020-03-01
dc.identifier.issn1873-6424
dc.identifier.pmid31838393
dc.identifier.doi10.1016/j.envpol.2019.113727
dc.identifier.urihttp://hdl.handle.net/10029/623710
dc.description.abstractSilver nanoparticles (AgNPs) are widely used because of their excellent antibacterial properties. They are, however, easily discharged into the water environment, causing potential adverse environmental effects. Meta-transcriptomic analyses are helpful to study the transcriptional response of prokaryotic and eukaryotic aquatic microorganisms to AgNPs. In the present study, microcosms were used to investigate the toxicity of AgNPs to a natural aquatic microbial community. It was found that a 7-day exposure to 10 μg L-1 silver nanoparticles (AgNPs) dramatically affected the structure of the microbial community. Aquatic micro eukaryota (including eukaryotic algae, fungi, and zooplankton) and bacteria (i.e., heterotrophic bacteria and cyanobacteria) responded differently to the AgNPs stress. Meta-transcriptomic analyses demonstrated that eukaryota could use multiple cellular strategies to cope with AgNPs stress, such as enhancing nitrogen and sulfur metabolism, over-expressing genes related to translation, amino acids biosynthesis, and promoting bacterial-eukaryotic algae interactions. By contrast, bacteria were negatively affected by AgNPs with less signs of detoxification than in case of eukaryota; various pathways related to energy metabolism, DNA replication and genetic repair were seriously inhibited by AgNPs. As a result, eukaryotic algae (mainly Chlorophyta) dominated over cyanobacteria in the AgNPs treated microcosms over the 7-d exposure. The present study helps to understand the effects of AgNPs on aquatic microorganisms and provides insights into the contrasting AgNPs toxicity in eukaryota and bacteria.en_US
dc.language.isoenen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCyanobacteriaen_US
dc.subjectEukaryoteen_US
dc.subjectGreen algaeen_US
dc.subjectMeta-transcriptomeen_US
dc.subjectProkaryoteen_US
dc.subjectSilver nanoparticlesen_US
dc.titleInsights into the transcriptional responses of a microbial community to silver nanoparticles in a freshwater microcosm.en_US
dc.typeArticleen_US
dc.identifier.journalEnviron Pollut 2020; 258:113727en_US
dc.source.journaltitleEnvironmental pollution (Barking, Essex : 1987)


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