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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Environmental impact of biogenic silver nanoparticles in soil and aquatic organisms

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Author(s):
Ottoni, C. A. [1, 2, 3] ; Lima Neto, M. C. [2] ; Leo, P. [1] ; Ortolan, B. D. [2, 3] ; Barbieri, E. [4] ; De Souza, A. O. [5]
Total Authors: 6
Affiliation:
[1] Inst Pesquisa Tecnol Estado Sao Paulo, Lab Biotecnol Ind, Sao Paulo, SP - Brazil
[2] Sao Paulo State Univ UNESP, Biosci Inst, Sao Vicente, SP - Brazil
[3] Sao Paulo State Univ, Inst Estudos Avancados Mar IEAMar, Sao Vicente, SP - Brazil
[4] APTA SAASP Governo Estado Sao Paulo, Inst Pesca, Sao Paulo - Brazil
[5] Inst Butantan, Mol Biol Lab, Ave Vital Brasil 1500, BR-05503900 Sao Paulo, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Chemosphere; v. 239, JAN 2020.
Web of Science Citations: 1
Abstract

Synthetic silver nanoparticles (AgNPs) are being extensively used in our daily lives; however, they may also pose a risk to public health and environment. Nowadays, biological AgNPs are considered an excellent alternative, since their synthesis occurs by a green technology of low cost and easy scaling. However, studies with these biological nanomaterials (NM) are still limited. Thus, a more careful assessment of their industrial application, economic feasibility and ecotoxicological impacts is crucial. The aim of this study was to investigate the effects of different concentrations of mangrove fungus Aspergillus tubingensis AgNPs on the aerobic heterotrophs soil microorganisms, rice seeds (Oryza sativa) and zebrafish (Danio rerio). Biogenic AgNPs were less harmful for soil microbiota compared to AgNO3. On rice seeds, the AgNPs displayed a dose-dependent inhibitory effect on germination and their subsequent growth and development. The percentage of inhibition of rice seed germination was 30, 69 and 80% for 0.01, 0.1 and 0.5 mM AgNPs, respectively. After 24 h of AgNPs exposition at a limit concentration of 0.2 mM, it did not induce mortality of the zebrafish D. rerio. Overall, A. tubingensis AgNPs can be considered as a suitable alternative to synthetic nanoparticles. (C) 2019 Elsevier Ltd. All rights reserved. (AU)