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- W2512399739 endingPage "e0161979" @default.
- W2512399739 startingPage "e0161979" @default.
- W2512399739 abstract "Soils are a sink for sulfidised-silver nanoparticles (Ag2S-NPs), yet there are limited ecotoxicity data for their effects on microbial communities. Conventional toxicity tests typically target a single test species or function, which does not reflect the broader community response. Using a combination of quantitative PCR, 16S rRNA amplicon sequencing and species sensitivity distribution (SSD) methods, we have developed a new approach to calculate silver-based NP toxicity thresholds (HCx, hazardous concentrations) that are protective of specific members (operational taxonomic units, OTUs) of the soil microbial community. At the HC20 (80% of species protected), soil OTUs were significantly less sensitive to Ag2S-NPs compared to AgNPs and Ag+ (5.9, 1.4 and 1.4 mg Ag kg-1, respectively). However at more conservative HC values, there were no significant differences. These trends in OTU responses matched with those seen in a specific microbial function (rate of nitrification) and amoA-bacteria gene abundance. This study provides a novel molecular-based framework for quantifying the effect of a toxicant on whole soil microbial communities while still determining sensitive genera/species. Methods and results described here provide a benchmark for microbial community ecotoxicological studies and we recommend that future revisions of Soil Quality Guidelines for AgNPs and other such toxicants consider this approach." @default.
- W2512399739 created "2016-09-16" @default.
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- W2512399739 date "2016-08-30" @default.
- W2512399739 modified "2023-10-15" @default.
- W2512399739 title "Quantifying the Sensitivity of Soil Microbial Communities to Silver Sulfide Nanoparticles Using Metagenome Sequencing" @default.
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- W2512399739 doi "https://doi.org/10.1371/journal.pone.0161979" @default.
- W2512399739 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5004803" @default.
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- W2512399739 hasPublicationYear "2016" @default.
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