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Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil
Short rotation coppice (SRC) with metal tolerant plants may attenuate the pollution of excessive elements with potential toxicity in soils, while preserving soil resources and functionality. Here, we investigated effects of 6 years phytomanagement with willow SRC on properties including heavy metal...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7426507/ https://www.ncbi.nlm.nih.gov/pubmed/32849472 http://dx.doi.org/10.3389/fmicb.2020.01899 |
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author | Xue, Kai Van Nostrand, Joy D. Zhou, Jizhong Neu, Silke Müller, Ingo Giagnoni, Laura Renella, Giancarlo |
author_facet | Xue, Kai Van Nostrand, Joy D. Zhou, Jizhong Neu, Silke Müller, Ingo Giagnoni, Laura Renella, Giancarlo |
author_sort | Xue, Kai |
collection | PubMed |
description | Short rotation coppice (SRC) with metal tolerant plants may attenuate the pollution of excessive elements with potential toxicity in soils, while preserving soil resources and functionality. Here, we investigated effects of 6 years phytomanagement with willow SRC on properties including heavy metal levels, toxicity tested by BioTox, microbial biomass, enzyme activities, and functional gene abundances measured by GeoChip of soils contaminated by As, Cd, Pb and Zn, as compared to the same soils under non-managed mixed grassland representing no intervention treatment (Unt). Though metal total concentrations did not differ by SRC and Unt, SRC soils had lower metal availability and toxicity, higher organic carbon, microbial biomass, phosphatase, urease and protease activities, as compared to Unt soils. Significantly reduced abundances of genes encoding resistances to various metals and antibiotics were observed in SRC, likely attributed to reduced metal selective pressure based on less heavy metal availability and soil toxicity. SRC also significantly reduced abundances of genes involved in nitrogen, phosphorus, and sulfur cycles, possibly due to the willow induced selection. Overall, while the SRC phytomanagement did not reduce the total heavy metal concentrations in soils, it decreased the heavy metal availability and soil toxicity, which in turn led to less metal selective pressure on microbial communities. The SRC phytomanagement also reduced the abundances of nutrient cycling genes from microbial communities, possibly due to intense plant nutrient uptake that depleted soil nitrogen and phosphorus availability, and thus site-specific practices should be considered to improve the soil nutrient supply for phytomanagement plants. |
format | Online Article Text |
id | pubmed-7426507 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-74265072020-08-25 Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil Xue, Kai Van Nostrand, Joy D. Zhou, Jizhong Neu, Silke Müller, Ingo Giagnoni, Laura Renella, Giancarlo Front Microbiol Microbiology Short rotation coppice (SRC) with metal tolerant plants may attenuate the pollution of excessive elements with potential toxicity in soils, while preserving soil resources and functionality. Here, we investigated effects of 6 years phytomanagement with willow SRC on properties including heavy metal levels, toxicity tested by BioTox, microbial biomass, enzyme activities, and functional gene abundances measured by GeoChip of soils contaminated by As, Cd, Pb and Zn, as compared to the same soils under non-managed mixed grassland representing no intervention treatment (Unt). Though metal total concentrations did not differ by SRC and Unt, SRC soils had lower metal availability and toxicity, higher organic carbon, microbial biomass, phosphatase, urease and protease activities, as compared to Unt soils. Significantly reduced abundances of genes encoding resistances to various metals and antibiotics were observed in SRC, likely attributed to reduced metal selective pressure based on less heavy metal availability and soil toxicity. SRC also significantly reduced abundances of genes involved in nitrogen, phosphorus, and sulfur cycles, possibly due to the willow induced selection. Overall, while the SRC phytomanagement did not reduce the total heavy metal concentrations in soils, it decreased the heavy metal availability and soil toxicity, which in turn led to less metal selective pressure on microbial communities. The SRC phytomanagement also reduced the abundances of nutrient cycling genes from microbial communities, possibly due to intense plant nutrient uptake that depleted soil nitrogen and phosphorus availability, and thus site-specific practices should be considered to improve the soil nutrient supply for phytomanagement plants. Frontiers Media S.A. 2020-08-07 /pmc/articles/PMC7426507/ /pubmed/32849472 http://dx.doi.org/10.3389/fmicb.2020.01899 Text en Copyright © 2020 Xue, Van Nostrand, Zhou, Neu, Müller, Giagnoni and Renella. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Xue, Kai Van Nostrand, Joy D. Zhou, Jizhong Neu, Silke Müller, Ingo Giagnoni, Laura Renella, Giancarlo Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil |
title | Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil |
title_full | Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil |
title_fullStr | Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil |
title_full_unstemmed | Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil |
title_short | Phytomanagement Reduces Metal Availability and Microbial Metal Resistance in a Metal Contaminated Soil |
title_sort | phytomanagement reduces metal availability and microbial metal resistance in a metal contaminated soil |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7426507/ https://www.ncbi.nlm.nih.gov/pubmed/32849472 http://dx.doi.org/10.3389/fmicb.2020.01899 |
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