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Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil

We examined time-dependent effect of iron oxide nanoparticles (IONPs) at a rate of 2000 mg kg(−1) soil on Cynodon dactylon litter (3 g kg(−1)) decomposition in an arid sandy soil. Overall, heterotrophic cultivable bacterial and fungal colonies, and microbial biomass carbon were significantly decreas...

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Autores principales: Rashid, Muhammad Imtiaz, Shahzad, Tanvir, Shahid, Muhammad, Imran, Muhammad, Dhavamani, Jeyakumar, Ismail, Iqbal M. I., Basahi, Jalal M., Almeelbi, Talal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5290472/
https://www.ncbi.nlm.nih.gov/pubmed/28155886
http://dx.doi.org/10.1038/srep41965
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author Rashid, Muhammad Imtiaz
Shahzad, Tanvir
Shahid, Muhammad
Imran, Muhammad
Dhavamani, Jeyakumar
Ismail, Iqbal M. I.
Basahi, Jalal M.
Almeelbi, Talal
author_facet Rashid, Muhammad Imtiaz
Shahzad, Tanvir
Shahid, Muhammad
Imran, Muhammad
Dhavamani, Jeyakumar
Ismail, Iqbal M. I.
Basahi, Jalal M.
Almeelbi, Talal
author_sort Rashid, Muhammad Imtiaz
collection PubMed
description We examined time-dependent effect of iron oxide nanoparticles (IONPs) at a rate of 2000 mg kg(−1) soil on Cynodon dactylon litter (3 g kg(−1)) decomposition in an arid sandy soil. Overall, heterotrophic cultivable bacterial and fungal colonies, and microbial biomass carbon were significantly decreased in litter-amended soil by the application of nanoparticles after 90 and 180 days of incubation. Time dependent effect of nanoparticles was significant for microbial biomass in litter-amended soil where nanoparticles decreased this variable from 27% after 90 days to 49% after 180 days. IONPs decreased CO(2) emission by 28 and 30% from litter-amended soil after 90 and 180 days, respectively. These observations indicated that time-dependent effect was not significant on grass-litter carbon mineralization efficiency. Alternatively, nanoparticles application significantly reduced mineral nitrogen content in litter-amended soil in both time intervals. Therefore, nitrogen mineralization efficiency was decreased to 60% after 180 days compared to that after 90 days in nanoparticles grass-litter amended soil. These effects can be explained by the presence of labile Fe in microbial biomass after 180 days in nanoparticles amendment. Hence, our results suggest that toxicity of IONPs to soil functioning should consider before recommending their use in agro-ecosystems.
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spelling pubmed-52904722017-02-06 Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil Rashid, Muhammad Imtiaz Shahzad, Tanvir Shahid, Muhammad Imran, Muhammad Dhavamani, Jeyakumar Ismail, Iqbal M. I. Basahi, Jalal M. Almeelbi, Talal Sci Rep Article We examined time-dependent effect of iron oxide nanoparticles (IONPs) at a rate of 2000 mg kg(−1) soil on Cynodon dactylon litter (3 g kg(−1)) decomposition in an arid sandy soil. Overall, heterotrophic cultivable bacterial and fungal colonies, and microbial biomass carbon were significantly decreased in litter-amended soil by the application of nanoparticles after 90 and 180 days of incubation. Time dependent effect of nanoparticles was significant for microbial biomass in litter-amended soil where nanoparticles decreased this variable from 27% after 90 days to 49% after 180 days. IONPs decreased CO(2) emission by 28 and 30% from litter-amended soil after 90 and 180 days, respectively. These observations indicated that time-dependent effect was not significant on grass-litter carbon mineralization efficiency. Alternatively, nanoparticles application significantly reduced mineral nitrogen content in litter-amended soil in both time intervals. Therefore, nitrogen mineralization efficiency was decreased to 60% after 180 days compared to that after 90 days in nanoparticles grass-litter amended soil. These effects can be explained by the presence of labile Fe in microbial biomass after 180 days in nanoparticles amendment. Hence, our results suggest that toxicity of IONPs to soil functioning should consider before recommending their use in agro-ecosystems. Nature Publishing Group 2017-02-03 /pmc/articles/PMC5290472/ /pubmed/28155886 http://dx.doi.org/10.1038/srep41965 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Rashid, Muhammad Imtiaz
Shahzad, Tanvir
Shahid, Muhammad
Imran, Muhammad
Dhavamani, Jeyakumar
Ismail, Iqbal M. I.
Basahi, Jalal M.
Almeelbi, Talal
Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
title Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
title_full Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
title_fullStr Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
title_full_unstemmed Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
title_short Toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
title_sort toxicity of iron oxide nanoparticles to grass litter decomposition in a sandy soil
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5290472/
https://www.ncbi.nlm.nih.gov/pubmed/28155886
http://dx.doi.org/10.1038/srep41965
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