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Changes in the bacterial communities in chromium-contaminated soils

INTRODUCTION: Hexavalent chromium or Cr(VI) is essential to various industries, such as leather manufacturing and stainless steel production. Given that inevitable leakage from industries pollutes the soil and thereby affects the soil environment. Microbial communities could improve the quality of t...

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Autores principales: Zhu, Yiran, Song, Kaimin, Cheng, Guodong, Xu, Huiling, Wang, Xiaozhou, Qi, Changxi, Zhang, Pu, Liu, Yongxia, Liu, Jianzhu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9845777/
https://www.ncbi.nlm.nih.gov/pubmed/36686195
http://dx.doi.org/10.3389/fvets.2022.1066048
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author Zhu, Yiran
Song, Kaimin
Cheng, Guodong
Xu, Huiling
Wang, Xiaozhou
Qi, Changxi
Zhang, Pu
Liu, Yongxia
Liu, Jianzhu
author_facet Zhu, Yiran
Song, Kaimin
Cheng, Guodong
Xu, Huiling
Wang, Xiaozhou
Qi, Changxi
Zhang, Pu
Liu, Yongxia
Liu, Jianzhu
author_sort Zhu, Yiran
collection PubMed
description INTRODUCTION: Hexavalent chromium or Cr(VI) is essential to various industries, such as leather manufacturing and stainless steel production. Given that inevitable leakage from industries pollutes the soil and thereby affects the soil environment. Microbial communities could improve the quality of the soil. Abundant bacterial communities would significantly enhance the soil richness and resist external pressure, benefiting agriculture. But the pollution of heavy metal broke the balance and decrease the abundance of bacterial communities, which weak the self-adjust ability of soil. This study aimed to explore changes in the diversity of soil bacterial communities and to identify the influences of soil bacterial communities on enzymes in soil polluted by Cr(VI). METHODS: The target soils were sampled quickly and aseptically. Their chromium content was detected through inductively coupled plasma-mass spectrometry, and bacterial microbiome communities were explored through MiSeq high-throughput sequencing. Then, the content of nitrite reductase and catalases were investigated through enzyme-linked immunosorbent assay (ELISA). RESULTS: Chromium content in polluted soils was higher than that in the control soils at all depths. Sobs, Chao1, Ace, and Shannon diversity estimators in the control were higher, whereas Simpson's diversity estimators in the control soils were lower than those of contaminated samples at all depths. Contaminants affected the composition of the bacterial community. The soil microbial species were relatively single and inhomogeneous in the polluted soils. The bacterial phyla in polluted and controlled soils include Proteobacteria, Actinobacteria, Chloroflexi, and Acidobacteria, which differ markedly in abundance. DISCUSSION: The results of these observations provide insights into the ecotoxicological effects of Cr(VI) exposure to soil microorganisms. To sum up these results are critical for evaluating the stabilized state of microbial community structures, contributing to the assessment of the potential risk of metal accumulation in soils.
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spelling pubmed-98457772023-01-19 Changes in the bacterial communities in chromium-contaminated soils Zhu, Yiran Song, Kaimin Cheng, Guodong Xu, Huiling Wang, Xiaozhou Qi, Changxi Zhang, Pu Liu, Yongxia Liu, Jianzhu Front Vet Sci Veterinary Science INTRODUCTION: Hexavalent chromium or Cr(VI) is essential to various industries, such as leather manufacturing and stainless steel production. Given that inevitable leakage from industries pollutes the soil and thereby affects the soil environment. Microbial communities could improve the quality of the soil. Abundant bacterial communities would significantly enhance the soil richness and resist external pressure, benefiting agriculture. But the pollution of heavy metal broke the balance and decrease the abundance of bacterial communities, which weak the self-adjust ability of soil. This study aimed to explore changes in the diversity of soil bacterial communities and to identify the influences of soil bacterial communities on enzymes in soil polluted by Cr(VI). METHODS: The target soils were sampled quickly and aseptically. Their chromium content was detected through inductively coupled plasma-mass spectrometry, and bacterial microbiome communities were explored through MiSeq high-throughput sequencing. Then, the content of nitrite reductase and catalases were investigated through enzyme-linked immunosorbent assay (ELISA). RESULTS: Chromium content in polluted soils was higher than that in the control soils at all depths. Sobs, Chao1, Ace, and Shannon diversity estimators in the control were higher, whereas Simpson's diversity estimators in the control soils were lower than those of contaminated samples at all depths. Contaminants affected the composition of the bacterial community. The soil microbial species were relatively single and inhomogeneous in the polluted soils. The bacterial phyla in polluted and controlled soils include Proteobacteria, Actinobacteria, Chloroflexi, and Acidobacteria, which differ markedly in abundance. DISCUSSION: The results of these observations provide insights into the ecotoxicological effects of Cr(VI) exposure to soil microorganisms. To sum up these results are critical for evaluating the stabilized state of microbial community structures, contributing to the assessment of the potential risk of metal accumulation in soils. Frontiers Media S.A. 2023-01-04 /pmc/articles/PMC9845777/ /pubmed/36686195 http://dx.doi.org/10.3389/fvets.2022.1066048 Text en Copyright © 2023 Zhu, Song, Cheng, Xu, Wang, Qi, Zhang, Liu and Liu. https://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 Veterinary Science
Zhu, Yiran
Song, Kaimin
Cheng, Guodong
Xu, Huiling
Wang, Xiaozhou
Qi, Changxi
Zhang, Pu
Liu, Yongxia
Liu, Jianzhu
Changes in the bacterial communities in chromium-contaminated soils
title Changes in the bacterial communities in chromium-contaminated soils
title_full Changes in the bacterial communities in chromium-contaminated soils
title_fullStr Changes in the bacterial communities in chromium-contaminated soils
title_full_unstemmed Changes in the bacterial communities in chromium-contaminated soils
title_short Changes in the bacterial communities in chromium-contaminated soils
title_sort changes in the bacterial communities in chromium-contaminated soils
topic Veterinary Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9845777/
https://www.ncbi.nlm.nih.gov/pubmed/36686195
http://dx.doi.org/10.3389/fvets.2022.1066048
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