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Photoactive titanium dioxide nanoparticles modify heterotrophic microbial functioning

Bundschuh, Mirco and Zubrod, Jochen P. and Konschak, Marco and Baudy, Patrick and Frombold, Bianca and Schulz, Ralf (2021). Photoactive titanium dioxide nanoparticles modify heterotrophic microbial functioning. Environmental Science and Pollution Research. 28 , 49550-49558
[Research article]

Full text not available from this repository.

Abstract

Nanoparticulate titanium dioxide (nTiO(2)) is frequently applied, raising concerns about potential side effects on the environment. While various studies have assessed structural effects in aquatic model ecosystems, its impact on ecosystem functions provided by microbial communities (biofilms) is not well understood. This is all the more the case when considering additional stressors, such as UV irradiation - a factor known to amplify nTiO(2)-induced toxicity. Using pairwise comparisons, we assessed the impact of UV (UV-A = 1.6 W/m(2); UV-B = 0.7 W/m(2)) at 0, 20 or 2000 mu g nTiO(2)/L on two ecosystem functions provided by leaf-associated biofilms: while leaf litter conditioning, important for detritivorous invertebrate nutrition, seems unaffected, microbial leaf decomposition was stimulated (up to 25%) by UV, with effect sizes being higher in the presence of nTiO(2). Although stoichiometric and microbial analyses did not allow for uncovering the underlying mechanism, it seems plausible that the combination of a shift in biofilm community composition and activity together with photodegradation as well as the formation of reactive oxygen species triggered changes in leaf litter decomposition. The present study implies that the multiple functions a microbial community performs are not equally sensitive. Consequently, relying on one of the many functions realized by the same microbial community may be misleading for environmental management.

Authors/Creators:Bundschuh, Mirco and Zubrod, Jochen P. and Konschak, Marco and Baudy, Patrick and Frombold, Bianca and Schulz, Ralf
Title:Photoactive titanium dioxide nanoparticles modify heterotrophic microbial functioning
Series Name/Journal:Environmental Science and Pollution Research
Year of publishing :2021
Volume:28
Page range:49550-49558
Number of Pages:9
Publisher:SPRINGER HEIDELBERG
ISSN:0944-1344
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:None
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:Nanomaterials, Semi-conductor, Trophic interaction, Ecological effects, Food selection
URN:NBN:urn:nbn:se:slu:epsilon-p-113875
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113875
Additional ID:
Type of IDID
DOI10.1007/s11356-021-14090-3
Web of Science (WoS)000696601500014
ID Code:25613
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:08 Oct 2021 09:25
Metadata Last Modified:08 Oct 2021 09:31

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