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Title: Functional activity and functional gene diversity of a Cu-contaminated soil remediated by aided phytostabilization using compost, dolomitic limestone and a mixed tree stand

Abstract

Trace elements (TEs) availability, biochemical activity and functional gene diversity was studied in a Cu-contaminated soil, revegetated for six years with a mixed stand of willow, black poplar, and false indigo-bush, and amended or not with compost plus dolomitic limestone (OMDL). The OMDL amendment significantly reduced Cu and As availability and soil toxicity, and increased the biochemical activity and microbial functional diversity assessed with the GEOCHIP technique, as compared to the unamended soil (Unt). The OMDL soil showed significantly higher abundance of 25 functional genes involved in decomposition organic compounds, and 11, 3 and 11 functional genes involved in the N, P and S biogeochemical cycles. Functional gene abundance was positively correlated with nutrient contents but negatively correlated with Cu availability and soil toxicity. The abundance of microbial functional genes encoding for resistance to various TEs also increased, possibly due to the microbial proliferation and lower Cu exposure in the presence of high total soil Cu concentration. Genes encoding for antibiotic resistance due to the co-occurrence of TEs and antibiotic resistant genes on genetic mobile elements. Finally, overall, phytomanagement confirmed its potential to restore the biological fertility and diversity of a severely Cu-contaminated soil, but the increase of TEs andmore » antibiotic resistant gene abundances deserve attention in future studies.« less

Authors:
 [1];  [2]; ORCiD logo [2];  [3];  [3];  [4]; ORCiD logo [4]
  1. Univ. of Chinese Academy of Sciences, Beijing (China). College of Resources and Environment; Univ. of Oklahoma, Norman, OK (United States). Inst. for Environmental Genomics and Dept. of Botany and Microbiology
  2. Univ. of Oklahoma, Norman, OK (United States). Inst. for Environmental Genomics and Dept. of Botany and Microbiology
  3. Univ. of Bordeaux, Pessac Cedex (France). BIOGECO, INRA
  4. Univ. of Florence (Italy). Dept. of Agrifood Production and Environmental Sciences
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1479455
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Environmental Pollution
Additional Journal Information:
Journal Volume: 242; Journal Issue: PA; Journal ID: ISSN 0269-7491
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Antibiotic resistance; Functional gene diversity; Metal resistance; Phytomanagement; Soil contamination; Soil functionality

Citation Formats

Xue, Kai, Zhou, Jizhong, Van Nostrand, Joy, Mench, Michel, Bes, Clemence, Giagnoni, Laura, and Renella, Giancarlo. Functional activity and functional gene diversity of a Cu-contaminated soil remediated by aided phytostabilization using compost, dolomitic limestone and a mixed tree stand. United States: N. p., 2018. Web. doi:10.1016/j.envpol.2018.06.057.
Xue, Kai, Zhou, Jizhong, Van Nostrand, Joy, Mench, Michel, Bes, Clemence, Giagnoni, Laura, & Renella, Giancarlo. Functional activity and functional gene diversity of a Cu-contaminated soil remediated by aided phytostabilization using compost, dolomitic limestone and a mixed tree stand. United States. doi:10.1016/j.envpol.2018.06.057.
Xue, Kai, Zhou, Jizhong, Van Nostrand, Joy, Mench, Michel, Bes, Clemence, Giagnoni, Laura, and Renella, Giancarlo. Thu . "Functional activity and functional gene diversity of a Cu-contaminated soil remediated by aided phytostabilization using compost, dolomitic limestone and a mixed tree stand". United States. doi:10.1016/j.envpol.2018.06.057. https://www.osti.gov/servlets/purl/1479455.
@article{osti_1479455,
title = {Functional activity and functional gene diversity of a Cu-contaminated soil remediated by aided phytostabilization using compost, dolomitic limestone and a mixed tree stand},
author = {Xue, Kai and Zhou, Jizhong and Van Nostrand, Joy and Mench, Michel and Bes, Clemence and Giagnoni, Laura and Renella, Giancarlo},
abstractNote = {Trace elements (TEs) availability, biochemical activity and functional gene diversity was studied in a Cu-contaminated soil, revegetated for six years with a mixed stand of willow, black poplar, and false indigo-bush, and amended or not with compost plus dolomitic limestone (OMDL). The OMDL amendment significantly reduced Cu and As availability and soil toxicity, and increased the biochemical activity and microbial functional diversity assessed with the GEOCHIP technique, as compared to the unamended soil (Unt). The OMDL soil showed significantly higher abundance of 25 functional genes involved in decomposition organic compounds, and 11, 3 and 11 functional genes involved in the N, P and S biogeochemical cycles. Functional gene abundance was positively correlated with nutrient contents but negatively correlated with Cu availability and soil toxicity. The abundance of microbial functional genes encoding for resistance to various TEs also increased, possibly due to the microbial proliferation and lower Cu exposure in the presence of high total soil Cu concentration. Genes encoding for antibiotic resistance due to the co-occurrence of TEs and antibiotic resistant genes on genetic mobile elements. Finally, overall, phytomanagement confirmed its potential to restore the biological fertility and diversity of a severely Cu-contaminated soil, but the increase of TEs and antibiotic resistant gene abundances deserve attention in future studies.},
doi = {10.1016/j.envpol.2018.06.057},
journal = {Environmental Pollution},
number = PA,
volume = 242,
place = {United States},
year = {2018},
month = {11}
}

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