Effects of silver sulfide nanomaterials on mycorrhizal colonization of tomato plants and soil microbial communities in biosolid-amended soil. (November 2015)

• Record Type: Journal Article
• Authors: Judy, Jonathan D.; Kirby, Jason K.; Creamer, Courtney; McLaughlin, Mike J.; Fiebiger, Cathy; Wright, Claire; Cavagnaro, Timothy R.; Bertsch, Paul M.
• Is Part Of: Environmental pollution. Volume 206(2015)
• Page Start: 256
• Page End: 263
• Publication Date: 2015-11
• Subjects: Nanotoxicology -- Nanoparticles -- Nanotechnology; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2015.07.002
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: We investigated effects of Ag2 S engineered nanomaterials (ENMs), polyvinylpyrrolidone (PVP) coated Ag ENMs (PVP-Ag), and Ag + on arbuscular mycorrhizal fungi (AMF), their colonization of tomato (S olanum lycopersicum ), and overall microbial community structure in biosolids-amended soil. Concentration-dependent uptake was measured in all treatments. Plants exposed to 100 mg kg −1 PVP-Ag ENMs and 100 mg kg −1 Ag + exhibited reduced biomass and greatly reduced mycorrhizal colonization. Bacteria, actinomycetes and fungi were inhibited by all treatment classes, with the largest reductions measured in 100 mg kg −1 PVP-Ag ENMs and 100 mg kg −1 Ag + . Overall, Ag2 S ENMs were less toxic to plants, less disruptive to plant-mycorrhizal symbiosis, and less inhibitory to the soil microbial community than PVP-Ag ENMs or Ag + . However, significant effects were observed at 1 mg kg −1 Ag2 S ENMs, suggesting that the potential exists for microbial communities and the ecosystem services they provide to be disrupted by environmentally relevant concentrations of Ag2 S ENMs. Graphical abstract: Highlights: PVP-Ag and Ag + inhibited AMF colonization more readily than Ag2 S ENMs. Impact of PVP-Ag ENMs and Ag + on microbial communities larger than for Ag2 S ENMs. Significant changes in microbial communities in response to Ag2 S ENMs at 1 mg kg −1 . Abstract : Although Ag2 S ENMs are less toxic to soil microorganisms than pristine nanomaterials or ions, some effects are observed on soil microbial communities at relevant concentrations.