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Song X, Li C, Qiu Z, Wang C, Zeng Q. Ecotoxicological effects of polyethylene microplastics and lead (Pb) on the biomass, activity, and community diversity of soil microbes. ENVIRONMENTAL RESEARCH 2024; 252:119012. [PMID: 38704010 DOI: 10.1016/j.envres.2024.119012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
Microplastics and heavy metals are ubiquitous and persistent contaminants that are widely distributed worldwide, yet little is known about the effects of their interaction on soil ecosystems. A soil incubation experiment was conducted to investigate the individual and combined effects of polyethylene microplastics (PE-MPs) and lead (Pb) on soil enzymatic activities, microbial biomass, respiration rate, and community diversity. The results indicate that the presence of PE-MPs notably reduced soil pH and elevated soil Pb bioavailability, potentially exacerbated the combined toxicity on the biogeochemical cycles of soil nutrients, microbial biomass carbon and nitrogen, and the activities of soil urease, sucrase, and alkaline phosphatase. Soil CO2 emissions increased by 7.9% with PE-MPs alone, decreased by 46.3% with single Pb, and reduced by 69.4% with PE-MPs and Pb co-exposure, compared to uncontaminated soils. Specifically, the presence of PE-MPs and Pb, individually and in combination, facilitated the soil metabolic quotient, leading to reduced microbial metabolic efficiency. Moreover, the addition of Pb and PE-MPs modified the composition of the microbial community, leading to the enrichment of specific taxa. Tax4Fun analysis showed the effects of Pb, PE-MPs and their combination on the biogeochemical processes and ecological functions of microbes were mainly by altering amino acid metabolism, carbohydrate metabolism, membrane transport, and signal transduction. These findings offer valuable insights into the ecotoxicological effects of combined PE-MPs and Pb on soil microbial dynamics, reveals key assembly mechanisms and environmental drivers, and highlights the potential threat of MPs and heavy metals to the multifunctionality of soil ecosystems.
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Affiliation(s)
- Xiliang Song
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Changjiang Li
- School of Environment Science & Spatial Informatics, China University of Mining & Technology, Xuzhou, 221116, China
| | - Zhennan Qiu
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Chenghui Wang
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Qiangcheng Zeng
- College of Life Sciences, Dezhou University, De'zhou, 253023, China.
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He F, Sun J, Wan JSH, Nawaz M, Javed Q, Pan L, Khattak WA, Bo Y, Xiang Y, Ren G, Lin X, Du D. Microplastics and cadmium affect invasion success by altering complementarity and selection effects in native community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:171135. [PMID: 38402976 DOI: 10.1016/j.scitotenv.2024.171135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
The diversity-invasibility hypothesis predicts that native plant communities with high biodiversity should be more resistant to invasion than low biodiversity communities. However, observational studies have found that there is often a positive relationship between native community diversity and invasibility. Pollutants were not tested for their potential to cause this positive relationship. Here, we established native communities with three levels of diversity (1, 2 and 4 species) and introduced an invasive plant [Symphyotrichum subulatum (Michx.) G. L. Nesom] to test the effects of different pollutant treatments (i.e., unpolluted control, microplastics (MPs) alone, cadmium (Cd) alone, and their combination) on the relationship between native community diversity and community invasibility. Our results indicate that different MPs and Cd treatments altered the invasibility of native communities, but this effect may depend on the type of pollutant. MPs single treatment reduced invasion success, and the degree of reduction increased with increasing native community diversity (Diversity 2: - 14.1 %; Diversity 4: - 63.1 %). Cd single treatment increased the aboveground biomass of invasive plants (+ 40.2 %) and invasion success. The presence of MPs inhibited the contribution of Cd to invasion success. Furthermore, we found that the complementarity and selection effects of the native community were negatively correlated with invasion success, and their relative contributions to invasion success also depended on the pollutant type. We found new evidence of how pollutants affect the relationship between native community diversity and habitat invasibility, which provides new perspectives for understanding and managing biological invasions in the context of environmental pollution. This may contribute to promoting the conservation of biodiversity, especially in ecologically sensitive and polluted areas.
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Affiliation(s)
- Feng He
- School of Emergency Management, Jiangsu University, Zhenjiang 212013, China; Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianfan Sun
- School of Emergency Management, Jiangsu University, Zhenjiang 212013, China; Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Justin S H Wan
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Mohsin Nawaz
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qaiser Javed
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Linxuan Pan
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wajid Ali Khattak
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yanwen Bo
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yan Xiang
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Guangqian Ren
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xin Lin
- Institute of Environment and Ecology, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Daolin Du
- Jingjiang College, Institute of Enviroment and Ecology, School of Emergency Management, School of Environment and Safety Engineering, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
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Cardenas Alegria O, Pires Quaresma M, Dias Dantas CW, Silva Guedes Lobato EM, de Oliveira Aragão A, Patroca da Silva S, Costa Barros da Silva A, Ribeiro Cruz AC, Ramos RTJ, Carneiro AR. Impacts of soybean agriculture on the resistome of the Amazonian soil. Front Microbiol 2022; 13:948188. [PMID: 36160259 PMCID: PMC9500545 DOI: 10.3389/fmicb.2022.948188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/16/2022] [Indexed: 11/15/2022] Open
Abstract
The soils of the Amazon are complex environments with different organisms cohabiting in continuous adaptation processes; this changes significantly when these environments are modified for the development of agricultural activities that alter the chemical, macro, and microbiological compositions. The metagenomic variations and the levels of the environmental impact of four different soil samples from the Amazon region were evaluated, emphasizing the resistome. Soil samples from the organic phase from the different forest, pasture, and transgenic soybean monocultures of 2–14 years old were collected in triplicate at each site. The samples were divided into two groups, and one group was pre-treated to obtain genetic material to perform sequencing for metagenomic analysis; another group carried out the chemical characterization of the soil, determining the pH, the content of cations, and heavy metals; these were carried out in addition to identifying with different databases the components of the microbiological communities, functional genes, antibiotic and biocide resistance genes. A greater diversity of antibiotic resistance genes was observed in the forest soil. In contrast, in monoculture soils, a large number of biocide resistance genes were evidenced, highlighting the diversity and abundance of crop soils, which showed better resistance to heavy metals than other compounds, with a possible dominance of resistance to iron due to the presence of the acn gene. For up to 600 different genes for resistance to antibiotics and 256 genes for biocides were identified, most of which were for heavy metals. The most prevalent was resistance to tetracycline, cephalosporin, penam, fluoroquinolone, chloramphenicol, carbapenem, macrolide, and aminoglycoside, providing evidence for the co-selection of these resistance genes in different soils. Furthermore, the influence of vegetation cover on the forest floor was notable as a protective factor against the impact of human contamination. Regarding chemical characterization, the presence of heavy metals, different stress response mechanisms in monoculture soils, and the abundance of mobile genetic elements in crop and pasture soils stand out. The elimination of the forest increases the diversity of genes for resistance to biocides, favoring the selection of genes for resistance to antibiotics in soils.
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Affiliation(s)
- Oscar Cardenas Alegria
- Laboratory of Genomic and Bioinformatics, Center of Genomics and System Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
- *Correspondence: Oscar Cardenas Alegria
| | - Marielle Pires Quaresma
- Laboratory of Genomic and Bioinformatics, Center of Genomics and System Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | | | | | - Andressa de Oliveira Aragão
- Laboratory of Genomic and Bioinformatics, Center of Genomics and System Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Sandro Patroca da Silva
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute-IEC/SVS/MS, Ananindeua, Brazil
| | - Amanda Costa Barros da Silva
- Laboratory of Genomic and Bioinformatics, Center of Genomics and System Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
| | - Ana Cecília Ribeiro Cruz
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute-IEC/SVS/MS, Ananindeua, Brazil
| | - Rommel Thiago Jucá Ramos
- Laboratory of Genomic and Bioinformatics, Center of Genomics and System Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
- Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Adriana Ribeiro Carneiro
- Laboratory of Genomic and Bioinformatics, Center of Genomics and System Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil
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Zhang X, Fu G, Xing S, Fu W, Liu X, Wu H, Zhou X, Ma Y, Zhang X, Chen B. Structure and diversity of fungal communities in long-term copper-contaminated agricultural soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:151302. [PMID: 34743886 DOI: 10.1016/j.scitotenv.2021.151302] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/06/2021] [Accepted: 10/24/2021] [Indexed: 06/13/2023]
Abstract
Copper (Cu) contamination threatens the stability of soil ecosystems. As important moderators of biochemical processes and soil remediation, the fungal community in contaminated soils has attracted much research interest. In this study, soil fungal diversity and community composition under long-term Cu contamination were investigated based on high-throughput sequencing. The co-occurrence networks were also constructed to display the co-occurrence patterns of the soil fungal community. The results showed that the richness and Chao1 index both significantly increased at 50 mg kg-1 Cu and then significantly decreased at 1600 and 3200 mg kg-1 Cu. Soil fungal diversity was significantly and positively correlated with plant dry weight. Specific tolerant taxa under different Cu contamination gradients were illustrated by linear discriminant analysis effect size (LEfSe). Soil Cu concentration and shoot dry weight were the strongest driving factors influencing fungal composition. The relative abundance of arbuscular mycorrhizal fungi increased first and then declined along with elevating Cu concentrations via FUNGuild analysis. The interactions among fungi were enhanced under light and moderate Cu contamination but weakened under heavy Cu contamination by random matrix theory (RMT)-based molecular ecological network analysis. Penicillium, identified as a keystone taxon in Cu-contaminated soils, had the function of removing heavy metals and detoxification, which might be vital to trigger the resistance of the fungal community to Cu contamination. The results may facilitate the identification of Cu pollution indicators and the development of in situ bioremediation technology for contaminated cultivated fields.
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Affiliation(s)
- Xuemeng Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gengxue Fu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
| | - Shuping Xing
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Fu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoying Liu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
| | - Hui Wu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang Zhou
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
| | - Yibing Ma
- Macau Environmental Research Institute, Macau University of Science and Technology, Macau 999078, China
| | - Xin Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Baodong Chen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Wu Y, Song Q, Wu J, Zhou J, Zhou L, Wu W. Field study on the soil bacterial associations to combined contamination with heavy metals and organic contaminants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146282. [PMID: 33714815 DOI: 10.1016/j.scitotenv.2021.146282] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
The understanding of soil microbial associations to combined contamination would substantially benefit the restoration of damaged ecosystems, which is currently limited at the field scale. In this study, we investigated the soil bacterial associations to combined contamination with metals (Cd, Cu, Hg, Pb, and Zn), polyaromatic hydrocarbons (PAHs), and polybrominated diphenyl ethers (PBDEs). Samples were collected from field sites under five land-use patterns with electronic waste recycling. Results showed that the contents of Cd (0.22-12.86 mg/kg), Cu (17-14,136 mg/kg), Pb (4.6-77,014 mg/kg), Hg (0.28-22 mg/kg), Zn (26-42,495 mg/kg), PAHs (4.6-1753 μg/kg), and PBDEs (1.9-1079 μg/kg) varied significantly across sites. We observed positive correlations between catalase activity and heavy metals, indicative of a resistance response to the oxidative stress induced by metals. Furthermore, the bacterial community diversity was found to be determined primarily by PBDEs, whereas acenaphthylene, available phosphorus, and 2,2',3,3',4,5,6-heptabrominated diphenyl ether (BDE-183) were the three major drivers affecting community composition. The co-occurrence network constructed for bacterial communities exposed to combined contamination was non-random with scale-free, small-world and modularity features. We further proposed functional roles of the modules including stress resistance, hydrocarbon degradation, and nutrient cycling. Overall, the findings of redundancy analysis, variation partition analysis and the co-occurrence network indicated that soil bacterial community under combined contamination cooperated to survive. Members including Rhodoplanes and Nitrospira were capable of degrading PAHs and PBDEs in various pathways, while others, including Acinetobacter, Citrobacter, and Pseudomonas, reduced the metal toxicity to the community. Our findings provide new insights into the responses of soil bacteria, particularly in terms of inter-specific relationships, under combined contamination at the field scale.
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Affiliation(s)
- Yingxin Wu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, 7 West Street, Yuancun, Guangzhou 510655, PR China
| | - Qingmei Song
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, 7 West Street, Yuancun, Guangzhou 510655, PR China
| | - Jiahui Wu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, 7 West Street, Yuancun, Guangzhou 510655, PR China
| | - Jingyan Zhou
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, 7 West Street, Yuancun, Guangzhou 510655, PR China
| | - Lingli Zhou
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, 7 West Street, Yuancun, Guangzhou 510655, PR China
| | - Wencheng Wu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, 7 West Street, Yuancun, Guangzhou 510655, PR China.
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Tao K, Tian H, Fan J, Li D, Liu C, Megharaj M, Li H, Hu M, Jia H, He W. Kinetics and catalytic efficiency of soil fluorescein diacetate hydrolase under the pesticide parathion stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:144835. [PMID: 33548707 DOI: 10.1016/j.scitotenv.2020.144835] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
Fluorescein diacetate hydrolase (FDA-H) is an accurate biochemical method measuring the total microbial activity in soil, which indicates soil quality under ambient environmental changes such as pesticide parathion (PTH). However, the influence of PTH on the kinetics of FDA-H is still unknown. In this study, fifteen farmland soils were exposed to acute PTH pollution to investigate how the kinetic characteristics of FDA-H change with PTH concentration. Results showed that PTH strongly inhibited the FDA-H activities. The values of maximum reaction velocity (Vmax) ranged from 0.29 to 2.18 × 10-2 mM g-1 soil h-1 and declined by 42.30%-71.01% under PTH stress. The Michaelis constant (Km) values ranged between 2.90 and 14.17 × 10-2 mM and exhibited three forms including unchanged, increased (38.16-242.65%) and decreased (13.41-39.23%) when exposed to PTH. Based on the changes in two kinetic parameters, the inhibition of PTH on FDA-H was classified as three types, i.e., noncompetitive, linear mixed and uncompetitive inhibition. The competitive inhibition constant (Kic) and noncompetitive constant (Kiu) ranged from 0.064 to 0.447 mM and 0.209 to 0.723 mM, respectively, which were larger than the Km in values. The catalytic efficiency (Vmax/Km) of FDA-H is a sensitive integrated parameter to evaluate the PTH toxicity due to the higher inhibition ratio than the Vmax. The PTH toxicity to FDA-H decreased with increase of soil organic matter and total nitrogen contents. This implied that the PTH toxicity could be alleviated by an increasing content of soil organic matter due to its buffering capacity to PTH. Besides, soils with a higher content of total nitrogen could provide stable environment for FDA-H to maintain its functionality under PTH pollution. Thus, the results of this study have great implications to the risk assessment of parathion in soils.
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Affiliation(s)
- Kelin Tao
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Haixia Tian
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Jing Fan
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Dongxiao Li
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Chaoyang Liu
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation, Faculty of Science, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Huayong Li
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Min Hu
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Hanzhong Jia
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Wenxiang He
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China.
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Ke W, Zhang X, Zhu F, Wu H, Zhang Y, Shi Y, Hartley W, Xue S. Appropriate human intervention stimulates the development of microbial communities and soil formation at a long-term weathered bauxite residue disposal area. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124689. [PMID: 33278724 DOI: 10.1016/j.jhazmat.2020.124689] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/12/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Bauxite residue discharged to disposal areas, which could generate environmental pollution issues. Long-term natural restoration may improve the physicochemical properties of the residues, in turn supporting vegetation establishment, and effectively managing pollution. Nevertheless, the effects of short-term human intervention on soil formation in the weathered disposal areas are still relatively unknown. Thus, residue samples with different depths from different regions including no vegetation, sparse vegetation, complete vegetation coverage, and complete vegetation coverage following sewage sludge treatment were selected to analyze microbial community using Illumina high-throughput sequencing technology and evaluate soil formation process. Long-term weathering changed pH, the fraction of water-stable aggregates and nutrient concentrations, whilst promoting Proteobacteria, Chloroflexi, Acidobacteria and Planctomycete populations. Sewage sludge addition enhanced aggregate stability and significantly changed microbial community diversity. Sewage sludge application enriched the relative abundances of Proteobacteria and Bacteroidetes, whilst decreasing the relative abundance of Acidobacteria, which may be due to variation in environmental factors. Canonical correspondence analysis revealed that pH and EC were the main factors affecting microbial structure, followed by organic carbon content and aggregate stability. The results enhance the understanding of soil formation in bauxite residue and reveal the potential benefit of human intervention in ecological reconstruction at disposal areas.
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Affiliation(s)
- Wenshun Ke
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Xianchao Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Feng Zhu
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China.
| | - Hao Wu
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Yifan Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Yan Shi
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - William Hartley
- Agriculture and Environment Department, Harper Adams University, Newport, Shropshire, TF10 8NB, United Kingdom
| | - Shengguo Xue
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China.
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Nakazato RK, Lourenço IS, Esposito MP, Lima MEL, Ferreira ML, Campos RDOA, Rinaldi MCS, Domingos M. Trace metals at the tree-litter-soil- interface in Brazilian Atlantic Forest plots surrounded by sources of air pollution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115797. [PMID: 33065365 DOI: 10.1016/j.envpol.2020.115797] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Passive biomonitoring was applied in four Atlantic forest plots in southeast Brazil, affected by different levels of trace metal pollution (OP site located in Minas Gerais State and PEFI, PP and STG located in São Paulo State). Native tree species were selected as biomonitors according to their abundance in each plot and successional classification. Current trace metal concentrations in total suspended particles, leaves of non-pioneer (NPi) and pioneer (Pi) species, topsoil (0-20 cm) and litter and concentration ratios at the plant/soil interface were analyzed to verify the atmosphere-plant-soil interactions, basal concentrations, spatial variations and metal accumulation at the ecosystem level. Redundant analysis helped to identify similar characteristics of metal concentrations in PP and PEFI, which can be influenced by the high concentrations of elements related to anthropogenic inputs. Analysis of variance and multivariate statistics indicated that the trees of OP presented higher concentrations of Cr, Fe, Mn and Ni than those in the other sites. High enrichment of Cd, Fe, Ni in non-pioneer plants indicated that the PP forest (initially considered as the least polluted) has still been affected by metal pollution. Soil collected in STG was enriched by all elements, however these elements were low available for plant uptake. Metal deposited in leaves and litter was an important sink for soil cycling, nevertheless, these metals are not bioavailable in most cases. Non-pioneer tree species revealed to be more appropriate than pioneer species to indicate the current panorama of the contamination and bioavailability levels of trace metals in the tree community-litter-soil interface of the Atlantic forest remnants included in this study.
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Affiliation(s)
| | - Isabela S Lourenço
- Instituto de Botânica, Núcleo de Pesquisa Em Ecologia, PO Box 68041, 04045-972, SP, Brazil
| | | | | | | | | | - Mirian C S Rinaldi
- Instituto de Botânica, Núcleo de Pesquisa Em Ecologia, PO Box 68041, 04045-972, SP, Brazil
| | - Marisa Domingos
- Instituto de Botânica, Núcleo de Pesquisa Em Ecologia, PO Box 68041, 04045-972, SP, Brazil
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Xie F, Zhang G, Zheng Q, Liu K, Yin X, Sun X, Saud S, Shi Z, Yuan R, Deng W, Zhang L, Cui G, Chen Y. Beneficial Effects of Mixing Kentucky Bluegrass With Red Fescue via Plant-Soil Interactions in Black Soil of Northeast China. Front Microbiol 2020; 11:556118. [PMID: 33193137 PMCID: PMC7656059 DOI: 10.3389/fmicb.2020.556118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/28/2020] [Indexed: 12/26/2022] Open
Abstract
Continuous monoculture of cool-season turfgrass causes soil degradation, and visual turf quality decline is a major concern in black soil regions of Northeast China. Turf mixtures can enhance turfgrass resistance to biotic and abiotic stresses and increase soil microbial diversity. Understanding mechanism by plant-soil interactions and changes of black soil microbial communities in turf mixture is beneficial to restoring the degradation of urbanized black soils and maintaining sustainable development of urban landscape ecology. In this study, based on the previous research of different sowing models, two schemes of turf monoculture and mixture were conducted in field plots during 2016-2018 in a black soil of Heilongjiang province of Northeast China. The mixture turf was established by mixing 50% Kentucky bluegrass "Midnight" (Poa pratensis L.) with 50% Red fescue "Frigg" (Festuca rubra L.); and the monoculture turf was established by sowing with pure Kentucky bluegrass. Turf performance, soil physiochemical properties, and microbial composition from rhizosphere were investigated. Soil microbial communities and abundance were analyzed by Illumina MiSeq sequencing and quantitative PCR methods. Results showed that turfgrass quality, turfgrass biomass, soil organic matter (SOM), urease, alkaline phosphatase, invertase, and catalase activities increased in PF mixture, but disease percentage and soil pH decreased. The microbial diversity was also significantly enhanced under turf mixture model. The microbial community compositions were significantly different between the two schemes. Turf mixtures obviously increased the abundances of Beauveria, Lysobacter, Chryseolinea, and Gemmatimonas spp., while remarkably reduced the abundances of Myrothecium and Epicoccum spp. Redundancy analysis showed that the compositions of bacteria and fungi were related to edaphic parameters, such as SOM, pH, and enzyme activities. Since the increasing of turf quality, biomass, and disease resistance were highly correlated with the changes of soil physiochemical parameters and microbial communities in turf mixture, which suggested that turf mixture with two species (i.e., Kentucky blue grass and Red fescue) changed soil microbial communities and enhanced visual turfgrass qualities through positive plant-soil interactions by soil biota.
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Affiliation(s)
- Fuchun Xie
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Gaoyun Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Qianjiao Zheng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Kemeng Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China.,Beijing Oriental Garden Environment Co., Ltd, Beijing, China
| | - Xiujie Yin
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Xiaoyang Sun
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Shah Saud
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Zhenjie Shi
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Runli Yuan
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Wenjing Deng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Lu Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Guowen Cui
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Yajun Chen
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
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10
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Batista ÉR, Carneiro JJ, Araújo Pinto F, Dos Santos JV, Carneiro MAC. Environmental drivers of shifts on microbial traits in sites disturbed by a large-scale tailing dam collapse. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 738:139453. [PMID: 32531582 DOI: 10.1016/j.scitotenv.2020.139453] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
This study aimed to assess the most affected traits related to microbial ecophysiology and activity and investigate its relationships with environmental drivers in mine tailings spilled from the Fundão dam at disturbed sites across Gualaxo do Norte river, Minas Gerais, Brazil. The mine tailings are characterized by increased pH value, silt percentage, and bulk density, while clay percentage, organic carbon (Corg), total nitrogen (Nt), and moisture contents are reduced. Microbial biomass, enzymatic activities (arylsulfatase, β-1,4-glucosidase, acid and alkaline phosphatases), and the total microbial activity potential (FDA hydrolysis) were generally lower in tailings compared to undisturbed reference soil (Und). Enzyme-based indexes (GMea, WMean, and IBRv2) showed microbial communities with significantly lower degradative efficacy in the tailings than Und in all sites (R2 ≥ 0.94, p < 0.001). Non-metric multidimensional scaling and distance-based redundancy analysis revealed that microbial communities exhibited significant differentiation (R2 adjusted = 0.73, p = 0.0001) between mine tailings and Und over the different studied sites, which was strongly influenced by changes on physicochemical properties (pH, Corg and Nt contents, the predominance of small-sized particles of silt, and bulk density) and the presence of Se, Cr, Fe, and Ni, even at low concentrations. Our study suggests that the physicochemical properties and the presence of low bioavailable concentrations of heavy metals in dam tailings promote shifts on microbial communities through reductions in the C storage and biogeochemical cycling of nutrients by these communities compared to those in undisturbed reference soils surrounding and, therefore, has negative implications for the ecosystem functioning.
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Affiliation(s)
- Éder Rodrigues Batista
- Sector of Biology, Microbiology and Soil Biological Processes, Department of Soil Science, Federal University of Lavras (UFLA), Lavras, MG, Brazil
| | - Joana Junqueira Carneiro
- Sector of Biology, Microbiology and Soil Biological Processes, Department of Soil Science, Federal University of Lavras (UFLA), Lavras, MG, Brazil
| | - Flávio Araújo Pinto
- Sector of Biology, Microbiology and Soil Biological Processes, Department of Soil Science, Federal University of Lavras (UFLA), Lavras, MG, Brazil
| | - Jessé Valentim Dos Santos
- Sector of Biology, Microbiology and Soil Biological Processes, Department of Soil Science, Federal University of Lavras (UFLA), Lavras, MG, Brazil
| | - Marco Aurélio Carbone Carneiro
- Sector of Biology, Microbiology and Soil Biological Processes, Department of Soil Science, Federal University of Lavras (UFLA), Lavras, MG, Brazil.
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11
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Czortek P, Królak E, Borkowska L, Bielecka A. Impacts of soil properties and functional diversity on the performance of invasive plant species Solidago canadensis L. on post-agricultural wastelands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 729:139077. [PMID: 32375069 DOI: 10.1016/j.scitotenv.2020.139077] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/20/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Amongst the numerous consequences of the rapid development of agriculture and urbanization, biological invasions are highlighted as having the biggest impact on the functioning of ecosystems. One of the alien plant species, considered in Europe and Asia to be highly invasive, is Solidago canadensis L.; and its impact on the functioning of ecosystems has been studied in numerous respects. However, knowledge about how the physico-chemical parameters of soils and biotic interactions between species shape the performance of S. canadensis in a transformed landscape is still insufficient. The aim of this study was to assess how complex soil abiotic conditions and the functional diversity of co-occurring vegetation shape the performance of S. canadensis on the wastelands abandoned by agriculture. Apart from detailed investigations of soil properties and S. canadensis biomass, to achieve our study aims, we used parameters of functional diversity, which allowed us to identify the main ecological processes determining the community assembly processes. Under higher contents of loamy fractions in soil, but lower functional richness in surroundings, S. canadensis achieved larger cover. Alongside increasing functional richness and dispersion in co-occurring vegetation, this species has demonstrated sturdy attributes when competing for water and nutrients, expressed by a higher production of rhizomes and roots. Under elevated zinc and lead levels, as well as higher functional evenness in the surroundings, the flower biomass decreased, while the biomass of stems increased. Thus, S. canadensis exhibits a highly adaptive capacity to grow in soils contaminated by heavy metals, due to the buffer properties and life strategies allowing the use of resources absorbed in loamy soils. Environmental factors seem to be more responsible for the shaping of the performance and for the colonization success of S. canadensis than biotic interactions with plants occurring in the surroundings.
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Affiliation(s)
- Patryk Czortek
- Białowieża Geobotanical Station, Faculty of Biology, University of Warsaw, Sportowa 19, 17-230 Białowieża, Poland.
| | - Elżbieta Królak
- Siedlce University of Natural Sciences and Humanities, Faculty of Natural Sciences, B. Prusa 14, 08-110 Siedlce, Poland
| | - Lidia Borkowska
- Siedlce University of Natural Sciences and Humanities, Faculty of Natural Sciences, B. Prusa 14, 08-110 Siedlce, Poland
| | - Aleksandra Bielecka
- Siedlce University of Natural Sciences and Humanities, Faculty of Natural Sciences, B. Prusa 14, 08-110 Siedlce, Poland
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12
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Stefanowicz AM, Kapusta P, Zubek S, Stanek M, Woch MW. Soil organic matter prevails over heavy metal pollution and vegetation as a factor shaping soil microbial communities at historical Zn-Pb mining sites. CHEMOSPHERE 2020; 240:124922. [PMID: 31563718 DOI: 10.1016/j.chemosphere.2019.124922] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/06/2019] [Accepted: 09/19/2019] [Indexed: 06/10/2023]
Abstract
This study examined the effects of soil heavy metals, macronutrients, texture and pH as well as plant species richness and composition on soil respiration, enzymatic activity, microbial biomass, metabolic quotient (qCO2) and arbuscular mycorrhizal fungi (AMF) at sites of historical Zn-Pb mining. The study was conducted both on a large scale (65 heaps scattered over the area of 750 km2) and on a small scale (25 plots along two 48 m transects extending from heaps to adjacent fallow fields). Total concentrations of metals exceeded 400 (Cd), 20,000 (Pb) and 80,000 (Zn) mg kg-1 at the most polluted sites. Although they decreased along the heap-fallow direction, they still remained above environmental standards in fallow soils. In contrast, some soluble metal forms increased with the increasing distance from heaps. Soil organic matter had the strongest positive effect on most microbial parameters. Total and/or available heavy metals exhibited significant negative effects on microbial biomass, enzymatic activity and AMF, and a positive effect on qCO2. Organic matter alleviated negative effects of heavy metals on microorganisms; they were not observed where the increase in the contamination was accompanied by the increase in organic matter content. Plant species richness affected positively enzymatic activity and mycorrhization level. Plant species composition possibly contributed to the formation of soil microbial communities, but its effect was entangled in that of heavy metals as plant communities changed along pollution gradients (from metal-tolerant grasslands dominated by Festuca ovina to calcareous grasslands and ruderal communities at less polluted sites).
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Affiliation(s)
- Anna M Stefanowicz
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512, Kraków, Poland.
| | - Paweł Kapusta
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512, Kraków, Poland.
| | - Szymon Zubek
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387, Kraków, Poland.
| | - Małgorzata Stanek
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512, Kraków, Poland.
| | - Marcin W Woch
- Institute of Biology, Pedagogical University of Kraków, Podchorążych 2, 31-054, Kraków, Poland.
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13
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Stanek M, Stefanowicz AM. Invasive Quercus rubra negatively affected soil microbial communities relative to native Quercus robur in a semi-natural forest. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133977. [PMID: 31461689 DOI: 10.1016/j.scitotenv.2019.133977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/13/2019] [Accepted: 08/17/2019] [Indexed: 06/10/2023]
Abstract
Invasive tree species can exert a profound effect on soil properties and ecosystem processes. Quercus rubra is a Northern American species that has an invader status in many European countries. However, the direction and magnitude of its effect on soil physicochemical and microbial properties relative to native tree species in forests are largely unknown. The aim of this study was to investigate the influence of invasive Q. rubra on physicochemical and microbial properties of soil organic and mineral horizons in comparison to native Quercus robur in a semi-natural forest. The study was performed on 23 Q. rubra and 10 Q. robur stands in the Niepołomice Forest (southern Poland). A number of soil parameters were assessed, namely moisture, water holding capacity, electrical conductivity, pH, organic C, total N, respiration, bacterial and fungal biomass and community structure (phospholipid fatty acid and ergosterol analyses). As soil properties are influenced by the quality of leaf litter deposited by trees, senesced Q. rubra and Q. robur leaves were characterized in terms of C, Ca, Mg, K, N, P, total phenolics and condensed tannins concentrations. It was found that total microbial and bacterial biomass was significantly lower under Q. rubra than Q. robur in both soil horizons. Microbial community structure of organic horizon also differed between the two Quercus species. In contrast, no differences were found in fungal biomass and soil physicochemical variables. The reduction in microbial and bacterial biomass beneath Q. rubra may be associated with the quantity and quality of its litter. Senesced Q. rubra leaves were characterized by significantly higher C/N and C/P ratios relative to those of Q. robur. Preliminary data indicate that although they had lower concentrations of phenolics and condensed tannins, the pools of these compounds supplied to the soil were higher due to higher litter production by Q. rubra.
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Affiliation(s)
- Małgorzata Stanek
- Department of Ecology, W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
| | - Anna M Stefanowicz
- Department of Ecology, W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
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14
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Stefanowicz AM, Zubek S, Stanek M, Grześ IM, Rożej-Pabijan E, Błaszkowski J, Woch MW. Invasion of Rosa rugosa induced changes in soil nutrients and microbial communities of coastal sand dunes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 677:340-349. [PMID: 31059877 DOI: 10.1016/j.scitotenv.2019.04.408] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/26/2019] [Accepted: 04/27/2019] [Indexed: 05/24/2023]
Abstract
The aim of this study was to investigate the influence of R. rugosa invasion on soil physicochemical and microbial properties of coastal sand dunes. The study was performed at 25 paired invaded-native plots along the Hel Peninsula at the coast of the Baltic Sea. A number of soil physicochemical and microbial parameters were measured, namely organic matter layer thickness, pH, electrical conductivity, organic C, total Ca, N, Na, P, N-NH4, N-NO3 and P-PO4 concentrations, phospholipid and neutral fatty acid (PLFA, NLFA) markers of total microbial, bacterial, fungal biomass and microbial community structure, as well as arbuscular mycorrhizal fungi (AMF) spore and species numbers, and the degree of AMF root colonization. Since potential alterations in soil parameters induced by R. rugosa may be related to large amounts of secondary metabolites provided to the soil with litter or root exudates, total phenolic concentration in senescing tissues of R. rugosa and native species was compared. Rosa rugosa invasion was associated with increased organic C, total N and P-PO4 concentrations in mineral soil relative to native vegetation. Organic matter layer under R. rugosa was thicker, had higher pH and Ca concentration. Rosa rugosa invasion was associated with reduced total microbial, bacterial and G+ bacterial biomass and increased AMF biomass markers (16:1ω5 NLFA and 16:1ω5 NLFA/PLFA), and changes in microbial community structure in mineral soil. The reduction in total and bacterial biomass under R. rugosa might have been related to the production of secondary metabolites as total phenolic concentration was approx. 5 times higher in senescing tissues of R. rugosa than in native vegetation. The observed increase in element concentrations and alterations in microbial community structure suggest that invasion of R. rugosa may threaten nutrient-poor habitats of coastal dunes. Changes in the soil environment may hinder restoration of these valuable habitats after invader removal.
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Affiliation(s)
- Anna M Stefanowicz
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
| | - Szymon Zubek
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland.
| | - Małgorzata Stanek
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
| | - Irena M Grześ
- Department of Environmental Zoology, Institute of Animal Sciences, Agricultural University, Al. Mickiewicza 24/28, 30-059 Kraków, Poland.
| | - Elżbieta Rożej-Pabijan
- Institute of Biology, Pedagogical University of Kraków, Podchorążych 2, 31-054 Kraków, Poland.
| | - Janusz Błaszkowski
- Department of Ecology, Protection and Shaping of Environment, West Pomeranian University of Technology, Słowackiego 17, 71-434 Szczecin, Poland.
| | - Marcin W Woch
- Institute of Biology, Pedagogical University of Kraków, Podchorążych 2, 31-054 Kraków, Poland.
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15
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Zeng P, Guo Z, Xiao X, Peng C. Effects of tree-herb co-planting on the bacterial community composition and the relationship between specific microorganisms and enzymatic activities in metal(loid)-contaminated soil. CHEMOSPHERE 2019; 220:237-248. [PMID: 30584955 DOI: 10.1016/j.chemosphere.2018.12.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 11/28/2018] [Accepted: 12/09/2018] [Indexed: 06/09/2023]
Abstract
Tree-herb co-planting is regarded as an ecologically sustainable approach for the remediation of metal(loid)-contaminated soil. In this study, two herb species, Pteris vittata L. and Arundo donax L., and two woody species, Morus alba L. and Broussonetia papyrifera L., were selected for the tree-herb co-planting, and their impacts on the changing of microbial community structure in metal(loid)-contaminated soil were studied by high-throughput sequencing. The results showed that the microbial diversity was stably maintained by the tree-herb interactions, while the composition of the microbial community was clearly affected in metal(loid)-contaminated soil. According to the Venn and flower diagrams, heat map and principal coordinate analysis, both plant monocultures and co-planting had specific microbial community structures, which suggested that the composition and abundance of bacterial communities varied between plant monoculture and tree-herb co-planting treatments. In particular, A. donax L. played a vital role in increasing the abundances of Cyanobacteria (>1%) in metal(loid)-contaminated soil when co-planted with woody plants. Furthermore, some specific microorganisms combined with plants played a key role in improving enzyme activity in the contaminated soil. Correspondingly, sucrase and acid phosphatase activities in monoculture and co-planting treatments significantly (p < 0.05) increased by 1.05-3.37 and 7.24-20.3 times. These results indicated that the rhizospheric interactions in the tree-herb co-planting system positively affected the soil microbes and had stronger impacts on the composition of soil microorganisms, which was closely related to the improvement of the biological quality in the metal(loid)-contaminated soil.
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Affiliation(s)
- Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China.
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
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16
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Song J, Shen Q, Wang L, Qiu G, Shi J, Xu J, Brookes PC, Liu X. Effects of Cd, Cu, Zn and their combined action on microbial biomass and bacterial community structure. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 243:510-518. [PMID: 30216883 DOI: 10.1016/j.envpol.2018.09.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/15/2018] [Accepted: 09/03/2018] [Indexed: 06/08/2023]
Abstract
Heavy metal pollution can decrease the soil microbial biomass and significantly alter microbial community structure. In this study, a long-term field experiment (5 years) and short-term laboratory experiment (40 d) were employed to evaluate the effects of heavy metals (Cd, Cu, Zn), and their combinations at different concentrations, on the soil microbial biomass and the bacterial community. The ranges of heavy metal concentration in the long-term and short-term experiments were similar, with concentration ranges of Cd, Cu and Zn of about 0.3-1.5, 100-500, and 150-300 mg kg-1, respectively. Microbial biomass decreased with increasing soil heavy metal concentrations in both the long-term and short-term experiments. The interaction between soil physicochemical factors (pH, TN, TC) and heavy metals (Cd, Cu, Zn) played a major role in change in the bacterial community in long-term polluted soil. In the laboratory experiment, although each heavy metal had an adverse effect on the microbial biomass and community structure, Cu appeared to have a greater role in the changes compared to Cd and Zn. However, the synergistic effects of the heavy metals were greater than those of the single metals and the synergistic effect between Cu and Cd was greater than that of Cu and Zn.
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Affiliation(s)
- Jiuwei Song
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Qunli Shen
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Lu Wang
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Gaoyang Qiu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Jiachun Shi
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Philip C Brookes
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China
| | - Xingmei Liu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, PR China.
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17
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Madrova P, Vetrovsky T, Omelka M, Grunt M, Smutna Y, Rapoport D, Vach M, Baldrian P, Kopecky J, Sagova-Mareckova M. A Short-Term Response of Soil Microbial Communities to Cadmium and Organic Substrate Amendment in Long-Term Contaminated Soil by Toxic Elements. Front Microbiol 2018; 9:2807. [PMID: 30524406 PMCID: PMC6256134 DOI: 10.3389/fmicb.2018.02807] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 10/31/2018] [Indexed: 01/19/2023] Open
Abstract
Two long-term contaminated soils differing in contents of Pb, Zn, As, Cd were compared in a microcosm experiment for changes in microbial community structure and respiration after various treatments. We observed that the extent of long-term contamination (over 200 years) by toxic elements did not change the total numbers and diversity of bacteria but influenced their community composition. Namely, numbers of Actinobacteria determined by phylum specific qPCR increased and also the proportion of Actinobacteria and Chloroflexi increased in Illumina sequence libraries in the more contaminated soil. In the experiment, secondary disturbance by supplemented cadmium (doses from double to 100-fold the concentration in the original soil) and organic substrates (cellobiose or straw) increased bacterial diversity in the less contaminated soil and decreased it in the more contaminated soil. Respiration in the experiment was higher in the more contaminated soil in all treatments and correlated with bacterial numbers. Considering the most significant changes in bacterial community, it seemed that particularly Actinobacteria withstand contamination by toxic elements. The results proved higher resistance to secondary disturbance in terms of both, respiration and bacterial community structure in the less contaminated soil.
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Affiliation(s)
- Pavla Madrova
- Department of Epidemiology and Ecology of Microorganisms, Crop Research Institute, Prague, Czechia
| | - Tomas Vetrovsky
- Laboratory of Environmental Microbiology, Institute of Microbiology of the AS CR, v.v.i., Prague, Czechia
| | - Marek Omelka
- Department of Probability and Mathematical Statistics, Faculty of Mathematics and Physics, Charles University, Prague, Czechia
| | - Michal Grunt
- Department of Epidemiology and Ecology of Microorganisms, Crop Research Institute, Prague, Czechia
| | - Yvona Smutna
- Department of Epidemiology and Ecology of Microorganisms, Crop Research Institute, Prague, Czechia
| | - Daria Rapoport
- Department of Epidemiology and Ecology of Microorganisms, Crop Research Institute, Prague, Czechia
| | - Marek Vach
- Department of Water Resources and Environmental Modeling, Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Petr Baldrian
- Laboratory of Environmental Microbiology, Institute of Microbiology of the AS CR, v.v.i., Prague, Czechia
| | - Jan Kopecky
- Department of Epidemiology and Ecology of Microorganisms, Crop Research Institute, Prague, Czechia
| | - Marketa Sagova-Mareckova
- Department of Epidemiology and Ecology of Microorganisms, Crop Research Institute, Prague, Czechia.,Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czechia
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18
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Woch MW, Radwańska M, Stanek M, Łopata B, Stefanowicz AM. Relationships between waste physicochemical properties, microbial activity and vegetation at coal ash and sludge disposal sites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 642:264-275. [PMID: 29902624 DOI: 10.1016/j.scitotenv.2018.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
The aim of the study was to assess the relationships between vegetation, physicochemical and microbial properties of substrate at coal ash and sludge disposal sites. The study was performed on 32 plots classified into 7 categories: dried ash sedimentation ponds, dominated by a grass Calamagrostis epigejos (AH-Ce), with the admixture of Pinus sylvestris (AH-CePs) or Robinia pseudoacacia (AH-CeRp), dry ash landfill dominated by Betula pendula and Pinus sylvestris (AD-BpPs) or Salix viminalis (AD-Sv) and coal sludge pond with drier parts dominated by Tussilago farfara (CS-Tf) and the wetter ones by Cyperus flavescens (CS-Cf). Ash sites were covered with soil layer imported as a part of technical reclamation. Ash had relatively high concentrations of some alkali and alkaline earth metals, Mn and pH, while coal sludge had high water and C, S, P and K contents. Concentrations of heavy metals were lower than allowable limits in all substrate types. Microbial biomass and, particularly, enzymatic activity in ash and sludge were generally low. The only exception were CS-Tf plots characterized by the highest microbial biomass, presumably due to large deposits of organic matter that became available for aerobic microbial biomass when water level fell. The properties of ash and sludge adversely affected microbial biomass and enzymatic activity as indicated by significant negative correlations between the content of alkali/alkaline earth metals, heavy metals, and macronutrients with enzymatic activity and/or microbial biomass, as well as positive correlations of these parameters with metabolic quotient (qCO2). Plant species richness and cover were relatively high, which may be partly associated with alleviating influence of soil covering the ash. The effect of the admixture of R. pseudoacacia or P. sylvestris to stands dominated by C. epigejos was smaller than expected. The former species increased NNH4, NNO3 and arylsulfatase activity, while the latter reduced activity of the enzyme.
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Affiliation(s)
- Marcin W Woch
- Institute of Biology, Pedagogical University of Kraków, Podchorążych 2, 31-054 Kraków, Poland
| | - Magdalena Radwańska
- Institute of Biology, Pedagogical University of Kraków, Podchorążych 2, 31-054 Kraków, Poland
| | - Małgorzata Stanek
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland
| | - Barbara Łopata
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland
| | - Anna M Stefanowicz
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
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Luo Y, Wu Y, Wang H, Xing R, Zheng Z, Qiu J, Yang L. Bacterial community structure and diversity responses to the direct revegetation of an artisanal zinc smelting slag after 5 years. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018. [PMID: 29541981 DOI: 10.1007/s11356-018-1573-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
This comparative field study examined the responses of bacterial community structure and diversity to the revegetation of zinc (Zn) smelting waste slag with eight plant species after 5 years. The microbial community structure of waste slag with and without vegetation was evaluated using high-throughput sequencing. The physiochemical properties of Zn smelting slag after revegetation with eight plant rhizospheres for 5 years were improved compared to those of bulk slag. Revegetation significantly increased the microbial community diversity in plant rhizospheres, and at the phylum level, Proteobacteria, Acidobacteria, and Bacteroidetes were notably more abundant in rhizosphere slags than those in bulk waste slag. Additionally, revegetation increased the relative abundance of plant growth-promoting rhizobacteria such as Flavobacterium, Streptomyces, and Arthrobacter as well as symbiotic N2 fixers such as Bradyrhizobium. Three dominant native plant species (Arundo donax, Broussonetia papyrifera, and Robinia pseudoacacia) greatly increased the quality of the rhizosphere slags. Canonical correspondence analysis showed that the differences in bacterial community structure between the bulk and rhizosphere slags were explained by slag properties, i.e., pH, available copper (Cu) and lead (Pb), moisture, available nitrogen (N), phosphorus (P), and potassium (K), and organic matter (OM); however, available Zn and cadmium (Cd) contents were the slag parameters that best explained the differences between the rhizosphere communities of the eight plant species. The results suggested that revegetation plays an important role in enhancing bacterial community abundance and diversity in rhizosphere slags and that revegetation may also regulate microbiological properties and diversity mainly through changes in heavy metal bioavailability and physiochemical slag characteristics.
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Affiliation(s)
- Youfa Luo
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Yonggui Wu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China.
- Institute of Applied Ecology, Guizhou University, Guiyang, 550025, China.
| | - Hu Wang
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Rongrong Xing
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Zhilin Zheng
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Jing Qiu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Lian Yang
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China
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Wu W, Dong C, Wu J, Liu X, Wu Y, Chen X, Yu S. Ecological effects of soil properties and metal concentrations on the composition and diversity of microbial communities associated with land use patterns in an electronic waste recycling region. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 601-602:57-65. [PMID: 28549288 DOI: 10.1016/j.scitotenv.2017.05.165] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 05/22/2023]
Abstract
Soil microbes play vital roles in ecosystem functions, and soil microbial communities may be strongly structured by land use patterns associated with electronic waste (e-waste) recycling activities, which can increase the heavy metal concentration in soils. In this study, a suite of soils from five land use types (paddy field, vegetable field, dry field, forest field, and e-waste recycling site) were collected in Longtang Town, Guangdong Province, South China. Soil physicochemical properties and heavy metal concentrations were measured, and the indigenous microbial assemblages were profiled using 16S rRNA high-throughput sequencing and clone library analyses. The results showed that mercury concentration was positively correlated with both Faith's PD and Chao1 estimates, suggesting that the soil microbial alpha diversity was predominantly regulated by mercury. In addition, redundancy analysis indicated that available phosphorus, soil moisture, and mercury were the three major drivers affecting the microbial assemblages. Overall, the microbial composition was determined primarily by land use patterns, and this study provides a novel insight on the composition and diversity of microbial communities in soils associated with e-waste recycling activities.
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Affiliation(s)
- Wencheng Wu
- School of Life Science/State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510275, PR China; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Changxun Dong
- College of Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jiahui Wu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Xiaowen Liu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Yingxin Wu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Xianbin Chen
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Shixiao Yu
- School of Life Science/State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510275, PR China.
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Wu W, Wu J, Liu X, Chen X, Wu Y, Yu S. Inorganic phosphorus fertilizer ameliorates maize growth by reducing metal uptake, improving soil enzyme activity and microbial community structure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 143:322-329. [PMID: 28578263 DOI: 10.1016/j.ecoenv.2017.05.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 05/14/2017] [Accepted: 05/20/2017] [Indexed: 06/07/2023]
Abstract
Recently, several studies have showed that both organic and inorganic fertilizers are effective in immobilizing heavy metals at low cost, in comparison to other remediation strategies for heavy metal-contaminated farmlands. A pot trial was conducted in this study to examine the effects of inorganic P fertilizer and organic fertilizer, in single application or in combination, on growth of maize, heavy metal availabilities, enzyme activities, and microbial community structure in metal-contaminated soils from an electronic waste recycling region. Results showed that biomass of maize shoot and root from the inorganic P fertilizer treatments were respectively 17.8 and 10.0 folds higher than the un-amended treatments (CK), while the biomass in the organic fertilizer treatments was only comparable to the CK. In addition, there were decreases of 85.0% in Cd, 74.3% in Pb, 66.3% in Cu, and 91.9% in Zn concentrations in the roots of maize grown in inorganic P fertilizer amended soil. Consistently, urease and catalase activities in the inorganic P fertilizer amended soil were 3.3 and 2.0 times higher than the CK, whereas no enhancement was observed in the organic fertilizer amended soil. Moreover, microbial community structure was improved by the application of inorganic P fertilizer, but not by organic fertilizer; the beneficial microbial groups such as Kaistobacter and Koribacter were most frequently detected in the inorganic P fertilizer amended soil. The negligible effect from the organic fertilizer might be ascribed to the decreased pH value in soils. The results suggest that the application of inorganic P fertilizer (or in combination with organic fertilizer) might be a promising strategy for the remediation of heavy metals contaminated soils in electronic waste recycling region.
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Affiliation(s)
- Wencheng Wu
- School of Life Science/State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510275, PR China; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Jiahui Wu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Xiaowen Liu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Xianbin Chen
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Yingxin Wu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, PR China
| | - Shixiao Yu
- School of Life Science/State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510275, PR China.
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Yang W, Zhang T, Lin S, Ni W. Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:14234-14248. [PMID: 28421524 DOI: 10.1007/s11356-017-9007-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/07/2017] [Indexed: 06/07/2023]
Abstract
The recovery of microbial community and activities is crucial to the remediation of contaminated soils. Distance-dependent variations of microbial community composition and metabolic characteristics in the rhizospheric soil of hyperaccumulator during phytoextraction are poorly understood. A 12-month phytoextraction experiment with Sedum alfredii in a Cd-contaminated soil was conducted. A pre-stratified rhizobox was used for separating sub-layer rhizospheric (0-2, 2-4, 4-6, 6-8, 8-10 mm from the root mat)/bulk soils. Soil microbial structure and function were analyzed by phospholipid fatty acid (PLFA) and MicroResp™ methods. The concentrations of total and specified PLFA biomarkers and the utilization rates for the 14 substrates (organic carbon) in the 0-2-mm sub-layer rhizospheric soil were significantly increased, as well as decreased with the increase in the distance from the root mat. Microbial structure measured by the ratios of different groups of PLFAs such as fungal/bacterial, monounsaturated/saturated, ratios of Gram-positive to Gram-negative (GP/GN) bacterial, and cyclopropyl/monoenoic precursors and 19:0 cyclo/18:1ω7c were significantly changed in the 0-2-mm soil. The PLFA contents and substrate utilization rates were negatively correlated with pH and total, acid-soluble, and reducible fractions of Cd, while positively correlated with labile carbon. The dynamics of microbial community were likely due to root exudates and Cd uptake by S. alfredii. This study revealed the stimulations and gradient changes of rhizosphere microbial community through phytoextraction, as reduced Cd concentration, pH, and increased labile carbons are due to the microbial community responses.
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Affiliation(s)
- Wenhao Yang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
- College of Environmental and Resource Sciences, Key Laboratory of Agricultural Resource and Environment of Zhejiang Province, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Taoxiang Zhang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Sen Lin
- College of Environmental and Resource Sciences, Key Laboratory of Agricultural Resource and Environment of Zhejiang Province, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Wuzhong Ni
- College of Environmental and Resource Sciences, Key Laboratory of Agricultural Resource and Environment of Zhejiang Province, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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Rozp¹dek P, Domka A, Turnau K. Chapter 29 Mycorrhizal Fungi and Accompanying Microorganisms in Improving Phytoremediation Techniques. Mycology 2017. [DOI: 10.1201/9781315119496-30] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Chao Y, Liu W, Chen Y, Chen W, Zhao L, Ding Q, Wang S, Tang YT, Zhang T, Qiu RL. Structure, Variation, and Co-occurrence of Soil Microbial Communities in Abandoned Sites of a Rare Earth Elements Mine. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:11481-11490. [PMID: 27670106 DOI: 10.1021/acs.est.6b02284] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Mining activity for rare earth elements (REEs) has caused serious environmental pollution, particularly for soil ecosystems. However, the effects of REEs on soil microbiota are still poorly understood. In this study, soils were collected from abandoned sites of a REEs mine, and the structure, diversity, and co-occurrence patterns of soil microbiota were evaluated by Illumina high-throughput sequencing targeting 16S rRNA genes. Although microbiota developed significantly along with the natural restoration, the microbial structure on the site abandoned for 10 years still significantly differed from that on the unmined site. Potential plant growth promoting bacteria (PGPB) were identified by comparing 16S sequences against a self-constructed PGPB database via BLAST, and it was found that siderophore-producing and phosphorus-solubilizing bacteria were more abundant in the studied soils than in reference soils. Canonical correspondence analysis indicated that species richness of plant community was the prime factor affecting microbial structure, followed by limiting nutrients (total carbon and total nitrogen) and REEs content. Further co-occurring network analysis revealed nonrandom assembly patterns of microbiota in the studied soils. These results increase our understanding of microbial variation and assembly pattern during natural restoration in REE contaminated soils.
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Affiliation(s)
- Yuanqing Chao
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University , Guangzhou, 510275, China
| | - Wenshen Liu
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
| | - Yanmei Chen
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
| | - Wenhui Chen
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
| | - Lihua Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
| | - Qiaobei Ding
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University , Guangzhou, 510275, China
| | - Ye-Tao Tang
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University , Guangzhou, 510275, China
| | - Tong Zhang
- Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong , Hong Kong SAR, China
| | - Rong-Liang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou, 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University , Guangzhou, 510275, China
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Roseline O, Rexford MD, Peter T, Marina AT, Makafui AB, Adigun RA, Emmanuel OT. Assessment of the levels of cadmium and lead in soil and vegetable samples from selected dumpsites in the Kumasi Metropolis of Ghana. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajar2016.10907] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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26
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Valentim dos Santos J, Varón-López M, Fonsêca Sousa Soares CR, Lopes Leal P, Siqueira JO, de Souza Moreira FM. Biological attributes of rehabilitated soils contaminated with heavy metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:6735-6748. [PMID: 26662102 DOI: 10.1007/s11356-015-5904-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 11/30/2015] [Indexed: 06/05/2023]
Abstract
This study aimed to evaluate the effects of two rehabilitation systems in sites contaminated by Zn, Cu, Pb, and Cd on biological soil attributes [microbial biomass carbon (Cmic), basal and induced respiration, enzymatic activities, microorganism plate count, and bacterial and fungal community diversity and structure by denaturing gradient gel electrophoresis (DGGE)]. These systems (S1 and S2) consisted of excavation (trenching) and replacement of contaminated soil by uncontaminated soil in rows with Eucalyptus camaldulensis planting (S1-R and S2-R), free of understory vegetation (S1-BR), or completely covered by Brachiaria decumbens (S2-BR) in between rows. A contaminated, non-rehabilitated (NR) site and two contamination-free sites [Cerrado (C) and pasture (P)] were used as controls. Cmic, densities of bacteria and actinobacteria, and enzymatic activities (β-glucosidase, acid phosphatase, and urease) were significantly higher in the rehabilitated sites of system 2 (S2-R and S2-BR). However, even under high heavy metal contents (S1-R), the rehabilitation with eucalyptus was also effective. DGGE analysis revealed similarity in the diversity and structure of bacteria and fungi communities between rehabilitated sites and C site (uncontaminated). Principal component analysis showed clustering of rehabilitated sites (S2-R and S2-BR) with contamination-free sites, and S1-R was intermediate between the most and least contaminated sites, demonstrating that the soil replacement and revegetation improved the biological condition of the soil. The attributes that most explained these clustering were bacterial density, acid phosphatase, β-glucosidase, fungal and actinobacterial densities, Cmic, and induced respiration.
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Affiliation(s)
- Jessé Valentim dos Santos
- Agricultural Microbiology Postgraduate Program, Department of Biology, Federal University of Lavras, Postal Box 3037, CEP 37200-000, Lavras, MG, Brazil
| | - Maryeimy Varón-López
- Agricultural Microbiology Postgraduate Program, Department of Biology, Federal University of Lavras, Postal Box 3037, CEP 37200-000, Lavras, MG, Brazil
| | - Cláudio Roberto Fonsêca Sousa Soares
- Department of Soil Science-Sector of Biology, Microbiology and Biological Processes Laboratory, Federal University of Lavras, Postal Box 3037, CEP 37200-000, Lavras, MG, Brazil
- Sector of Biology, Soil Microbiology Laboratory, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Postal Box 476, Florianópolis, SC, 88040-900, Brazil
| | - Patrícia Lopes Leal
- Department of Soil Science-Sector of Biology, Microbiology and Biological Processes Laboratory, Federal University of Lavras, Postal Box 3037, CEP 37200-000, Lavras, MG, Brazil
| | - José Oswaldo Siqueira
- Department of Soil Science-Sector of Biology, Microbiology and Biological Processes Laboratory, Federal University of Lavras, Postal Box 3037, CEP 37200-000, Lavras, MG, Brazil
- Vale Technological Institute, Rua Boaventura da Silva, 955, Nazaré, Belem, PA, 60055-090, Brazil
| | - Fatima Maria de Souza Moreira
- Department of Soil Science-Sector of Biology, Microbiology and Biological Processes Laboratory, Federal University of Lavras, Postal Box 3037, CEP 37200-000, Lavras, MG, Brazil.
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Kapusta P, Sobczyk Ł. Effects of heavy metal pollution from mining and smelting on enchytraeid communities under different land management and soil conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 536:517-526. [PMID: 26233783 DOI: 10.1016/j.scitotenv.2015.07.086] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/17/2015] [Accepted: 07/19/2015] [Indexed: 06/04/2023]
Abstract
We studied enchytraeid communities in several habitats polluted by heavy metals from Zn-Pb mining and smelting activities. We sampled 41 sites that differed in the type of substratum (carbonate rock, metal-rich carbonate mining waste, siliceous sand) and land management (planting Scots pine, topsoiling, leaving to natural succession), and the distance from the smelter. Our main aims were to determine which pollution variables and natural factors most influenced enchytraeid species composition, richness and density, and examine what was the effect of planting Scots pine (reclamation) on enchytraeid communities. The soils harboured on average 1 to 5 enchytraeid species and 700 to 18,300 individuals per square metre, depending on the habitat. These figures were generally lower than those reported from unpolluted regions. Redundancy and multiple regression analyses confirmed the negative impact of heavy metal pollution on both enchytraeid community structure and abundance. Among pollution variables, the distance from the smelter best explained the variation in enchytraeid communities. The concentrations of heavy metals in the soil had less (e.g. total Pb and exchangeable Zn) or negligible (water-soluble forms) explanatory power. Natural soil properties were nearly irrelevant for enchytraeids, except for soil pH, which determined the species composition. Plant species richness was an important explanatory variable, as it positively affected most parameters of enchytraeid community. The results of two-by-two factorial comparisons (planting Scots pine vs. natural succession; carbonate mining waste vs. siliceous sand) suggest that reclamation can improve soil quality for biota, since it increased the diversity and abundance of enchytraeids; this effect was not dependent on the type of substratum. In conclusion, enchytraeids responded negatively to heavy metal pollution and their response was consistent and clear. These animals can be used as indicators of metal toxicity even in the presence of high natural variability, but it is recommended to study their species composition.
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Affiliation(s)
- Paweł Kapusta
- W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
| | - Łukasz Sobczyk
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland.
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Vieweger A, Döring TF. Assessing health in agriculture--towards a common research framework for soils, plants, animals, humans and ecosystems. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:438-446. [PMID: 24777948 DOI: 10.1002/jsfa.6708] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 04/16/2014] [Accepted: 04/18/2014] [Indexed: 06/03/2023]
Abstract
In agriculture and food systems, health-related research includes a vast diversity of topics. Nutritional, toxicological, pharmacological, epidemiological, behavioural, sociological, economic and political methods are used to study health in the five domains of soils, plants, livestock, humans and ecosystems. An idea developed in the early founding days of organic agriculture stated that the health of all domains is one and indivisible. Here we show that recent research reveals the existence and complex nature of such health links among domains. However, studies of health aspects in agriculture are often separated by disciplinary boundaries. This restrains the understanding of health in agricultural systems. Therefore we explore the opportunities and limitations of bringing perspectives together from the different domains. We review current approaches to define and assess health in agricultural contexts, comparing the state of the art of commonly used approaches and bringing together the presently disconnected debates in soil science, plant science, veterinary science and human medicine. Based on a qualitative literature analysis, we suggest that many health criteria fall into two paradigms: (1) the Growth Paradigm, where terms are primarily oriented towards continued growth; (2) the Boundary Paradigm, where terms focus on maintaining or coming back to a status quo, recognising system boundaries. Scientific health assessments in agricultural and food systems need to be explicit in terms of their position on the continuum between Growth Paradigm and Boundary Paradigm. Finally, we identify areas and concepts for a future direction of health assessment and research in agricultural and food systems.
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Affiliation(s)
- Anja Vieweger
- Organic Research Centre, Elm Farm, Hamstead Marshall, Newbury, Berkshire, RG20 0HR, UK
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29
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Muhlbachova G, Sagova-Mareckova M, Omelka M, Szakova J, Tlustos P. The influence of soil organic carbon on interactions between microbial parameters and metal concentrations at a long-term contaminated site. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 502:218-23. [PMID: 25260167 DOI: 10.1016/j.scitotenv.2014.08.079] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 08/06/2014] [Accepted: 08/23/2014] [Indexed: 05/13/2023]
Abstract
The effects of lead, zinc, cadmium, arsenic and copper deposits on soil microbial parameters were investigated at a site exposed to contamination for over 200 years. Soil samples were collected in triplicates at 121 sites differing in contamination and soil organic carbon (SOC). Microbial biomass, respiration, dehydrogenase activity and metabolic quotient were determined and correlated with total and extractable metal concentrations in soil. The goal was to analyze complex interactions between toxic metals and microbial parameters by assessing the effect of soil organic carbon in the relationships. The effect of SOC was significant in all interactions and changed the correlations between microbial parameters and metal fractions from negative to positive. In some cases, the effect of SOC was combined with that of clay and soil pH. In the final analysis, dehydrogenase activity was negatively correlated to total metal concentrations and acetic acid extractable metals, respiration and metabolic quotient were to ammonium nitrate extractable metals. Dehydrogenase activity was the most sensitive microbial parameter correlating most frequently with contamination. Total and extractable zinc was most often correlated with microbial parameters. The large data set enabled robust explanation of discrepancies in organic matter functioning occurring frequently in analyzing of contaminated soil processes.
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Affiliation(s)
- G Muhlbachova
- Crop Research Institute, Drnovska 507, 161 06 Prague 6, Ruzyne, Czech Republic
| | - M Sagova-Mareckova
- Crop Research Institute, Drnovska 507, 161 06 Prague 6, Ruzyne, Czech Republic.
| | - M Omelka
- Charles University, Faculty of Mathematics and Physics, Dept. of Probability and Mathematical Statistics, Prague 8, Karlin, Czech Republic
| | - J Szakova
- Czech University of Life Sciences, Department of Agroenvironmental Chemistry and Plant Nutrition, Prague 6, Suchdol, Czech Republic
| | - P Tlustos
- Czech University of Life Sciences, Department of Agroenvironmental Chemistry and Plant Nutrition, Prague 6, Suchdol, Czech Republic
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Oleńska E, Małek W. Genetic differentiation of Trifolium repens microsymbionts deriving from Zn-Pb waste-heap and control area in Poland. J Basic Microbiol 2014; 55:462-70. [PMID: 25400035 DOI: 10.1002/jobm.201400604] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 10/14/2014] [Indexed: 11/08/2022]
Abstract
The aim of this work was to determine the genetic structure of Rhizobium leguminosarum bv. trifolii population isolated from root nodules of Trifolium repens growing in heavy metal contaminated Bolesław waste-heap area and compare it with that of an unpolluted control Bolestraszyce population. The 684-bp long dinitrogenase reductase (nifH) gene fragments were amplified in a PCR reaction and then sequenced. An analysis of nifH gene amplicons of 21 rhizobial strains from each of the studied populations revealed substantially reduced genotype (h) and nucleotide (π) diversities in the metallicolous Bolesław population in comparison to the non-metallicolous Bolestraszyce one, and showed a significant genetic differentiation between these populations (F(ST) = 0.159, p = 0.018). Among the strains under investigation, six genotypes (A-F) with 95-99% nifH gene sequence identities were distinguished. Studied T. repens nodule isolates indicated the highest nifH gene sequence similarities (95-100%) with R. leguminosarum bv. trifolii reference strains and on nifH phylogram all these strains formed monophyletic, highly supported clade (100%). The decreased genotype and nucleotide diversities of the waste-heap R. leguminosarum bv. trifolii population, compared to that from the control area and substantial genetic differentiation between populations of nifH gene, is arguably the consequence of the random genetic drift (Tajima's D = 2.042, p = 0.99).
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Affiliation(s)
- Ewa Oleńska
- Department of Genetics and Evolution, Institute of Biology, University of Białystok, Białystok, Poland
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Boshoff M, De Jonge M, Dardenne F, Blust R, Bervoets L. The impact of metal pollution on soil faunal and microbial activity in two grassland ecosystems. ENVIRONMENTAL RESEARCH 2014; 134:169-180. [PMID: 25173048 DOI: 10.1016/j.envres.2014.06.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 05/27/2014] [Accepted: 06/26/2014] [Indexed: 06/03/2023]
Abstract
In this study the influence of metal pollution on soil functional activity was evaluated by means of Bait lamina and BIOLOG(®) EcoPlates™ assays. The in situ bait lamina assay investigates the feeding activity of macrofauna, mesofauna and microarthropods while the BIOLOG(®) EcoPlate™ assay measures the metabolic fingerprint of a selectively extracted microbial community. Both assays proved sensitive enough to reveal changes in the soil community between the plots nearest to and further away from a metal pollution source. Feeding activity (FA) at the less polluted plots reached percentages of 90% while plots nearer to the source of pollution reached percentages as low as 10%. After 2 and 6 days of incubation average well color development (AWCD) and functional richness (R') were significantly lower at the plots closest to the source of pollution. While the Shannon Wiener diversity index (H') decreased significantly at sites nearer to the source of pollution after 2 days but not after 6 days of incubation. Arsenic, Cu and Pb correlated significantly and negatively with feeding activity and functional indices while the role of changing environmental factors such as moisture percentage could not be ruled out completely. Compared to the Bait lamina method that is used in situ and which is therefore more affected by site specific variation, the BIOLOG assay, which excludes confounding factors such as low moisture percentage, may be a more reliable assay to measure soil functional activity.
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Affiliation(s)
- Magdalena Boshoff
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
| | - Maarten De Jonge
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Freddy Dardenne
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Ronny Blust
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Lieven Bervoets
- Laboratory of Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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Balota EL, Machineski O, Hamid KIA, Yada IFU, Barbosa GMC, Nakatani AS, Coyne MS. Soil microbial properties after long-term swine slurry application to conventional and no-tillage systems in Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 490:397-404. [PMID: 24867704 DOI: 10.1016/j.scitotenv.2014.05.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/25/2014] [Accepted: 05/05/2014] [Indexed: 06/03/2023]
Abstract
Swine waste can be used as an agricultural fertilizer, but large amounts may accumulate excess nutrients in soil or contaminate the surrounding environment. This study evaluated long-term soil amendment (15 years) with different levels of swine slurry to conventional (plow) tillage (CT) and no tillage (NT) soils. Long-term swine slurry application did not affect soil organic carbon. Some chemical properties, such as calcium, base saturation, and aluminum saturation were significantly different within and between tillages for various application rates. Available P and microbial parameters were significantly affected by slurry addition. Depending on tillage, soil microbial biomass and enzyme activity increased up to 120 m(3) ha(-1) year(-1) in all application rates. The NT system had higher microbial biomass and activity than CT at all application levels. There was an inverse relationship between the metabolic quotient (qCO2) and MBC, and the qCO2 was 53% lower in NT than CT. Swine slurry increased overall acid phosphatase activity, but the phosphatase produced per unit of microbial biomass decreased. A comparison of data obtained in the 3rd and 15th years of swine slurry application indicated that despite slurry application the CT system degraded with time while the NT system had improved values of soil quality indicators. For these Brazilian oxisols, swine slurry amendment was insufficient to maintain soil quality parameters in annual crop production without additional changes in tillage management.
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Affiliation(s)
- Elcio L Balota
- IAPAR - Agronomic Institute of Paraná State, 86001-970 Londrina, Paraná, Brazil.
| | - Oswaldo Machineski
- IAPAR - Agronomic Institute of Paraná State, 86001-970 Londrina, Paraná, Brazil
| | - Karima I A Hamid
- IAPAR - Agronomic Institute of Paraná State, 86001-970 Londrina, Paraná, Brazil
| | - Ines F U Yada
- IAPAR - Agronomic Institute of Paraná State, 86001-970 Londrina, Paraná, Brazil
| | | | - Andre S Nakatani
- EMBRAPA Soja, Caixa Postal 231, CEP 86001-970 Londrina, Paraná, Brazil
| | - Mark S Coyne
- Department of Plant and Soil Sciences, University of Kentucky, Lexington KY 40546, USA
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