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Picariello E, De Nicola F. Recover of Soil Microbial Community Functions in Beech and Turkey Oak Forests After Coppicing Interventions. MICROBIAL ECOLOGY 2024; 87:86. [PMID: 38940921 PMCID: PMC11213729 DOI: 10.1007/s00248-024-02402-2] [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: 02/26/2024] [Accepted: 06/18/2024] [Indexed: 06/29/2024]
Abstract
Forest management influences the occurrence of tree species, the organic matter input to the soil decomposer system, and hence, it can alter soil microbial community and key ecosystem functions it performs. In this study, we compared the potential effect of different forest management, coppice and high forest, on soil microbial functional diversity, enzyme activities and chemical-physical soil properties in two forests, turkey oak and beech, during summer and autumn. We hypothesized that coppicing influences soil microbial functional diversity with an overall decrease. Contrary to our hypothesis, in summer, the functional diversity of soil microbial community was higher in both coppice forests, suggesting a resilience response of the microbial communities in the soil after tree cutting, which occurred 15-20 years ago. In beech forest under coppice management, a higher content of soil organic matter (but also of soil recalcitrant and stable organic carbon) compared to high forest can explain the higher soil microbial functional diversity and metabolic activity. In turkey oak forest, although differences in functional diversity of soil microbial community between management were observed, for the other investigated parameters, the differences were mainly linked to seasonality. The findings highlight that the soil organic matter preservation depends on the type of forest, but the soil microbial community was able to recover after about 15 years from coppice intervention in both forest ecosystems. Thus, the type of management implemented in these forest ecosystems, not negatively affecting soil organic matter pool, preserving microbial community and potentially soil ecological functions, is sustainable in a scenario of climate change.
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Affiliation(s)
- Enrica Picariello
- Department of Sciences and Technologies, University of Sannio, 82100, Benevento, Italy.
| | - Flavia De Nicola
- Department of Sciences and Technologies, University of Sannio, 82100, Benevento, Italy
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2
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Kozhakhmetova M, Akimbekov N, Digel I, Tastambek K. Evaluating the low-rank coal degradation efficiency bioaugmented with activated sludge. Sci Rep 2024; 14:14827. [PMID: 38937498 PMCID: PMC11211346 DOI: 10.1038/s41598-024-64275-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/06/2024] [Indexed: 06/29/2024] Open
Abstract
Microbial bioaugmentation of coal is considered as a viable and ecologically sustainable approach for the utilization of low-rank coals (LRC). The search for novel techniques to derive high-value products from LRC is currently of great importance. In response to this demand, endeavors have been undertaken to develop microbially based coal solubilization and degradation techniques. The impact of supplementing activated sludge (AS) as a microbial augmentation to enhance LRC biodegradation was investigated in this study. The LRC and their biodegradation products were characterized using the following methods: excitation-emission Matrices detected fluorophores at specific wavelength positions (O, E, and K peaks), revealing the presence of organic complexes with humic properties. FTIR indicated the increased amount of carboxyl groups in the bioaugmented coals, likely due to aerobic oxidation of peripheral non-aromatic structural components of coal. The bacterial communities of LRC samples are primarily composed of Actinobacteria (up to 36.2%) and Proteobacteria (up to 25.8%), whereas the Firmicutes (63.04%) was the most abundant phylum for AS. The community-level physiological profile analysis showed that the microbial community AS had high metabolic activity of compared to those of coal. Overall, the results demonstrated successful stimulation of LRC transformation through supplementation of exogenous microflora in the form of AS.
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Affiliation(s)
| | - Nuraly Akimbekov
- Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan
- Khoja Akhmet Yassawi International Kazakh-Turkish University, 161200, Turkestan, Kazakhstan
- West Kazakhstan Marat Ospanov Medical University, Maresyev Str. 68, 030019, Aktobe, Kazakhstan
| | - Ilya Digel
- Aachen University of Applied Sciences, Heinrich-Mussmann-Straße 1, 52428, Jülich, Germany
| | - Kuanysh Tastambek
- Al-Farabi Kazakh National University, 050040, Almaty, Kazakhstan
- Khoja Akhmet Yassawi International Kazakh-Turkish University, 161200, Turkestan, Kazakhstan
- M. Auezov South Kazakhstan University, 160012, Shymkent, Kazakhstan
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3
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Asif A, Koner S, Chen JS, Hussain A, Huang SW, Hussain B, Hsu BM. Uncovering the microbial community structure and physiological profiles of terrestrial mud volcanoes: A comprehensive metagenomic insight towards their trichloroethylene biodegradation potentiality. ENVIRONMENTAL RESEARCH 2024; 258:119457. [PMID: 38906444 DOI: 10.1016/j.envres.2024.119457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 06/04/2024] [Accepted: 06/18/2024] [Indexed: 06/23/2024]
Abstract
Mud volcanoes are dynamic geological features releasing methane (CH4), carbon dioxide (CO2), and hydrocarbons, harboring diverse methane and hydrocarbon-degrading microbes. However, the potential application of these microbial communities in chlorinated hydrocarbons bioremediation purposes such as trichloroethylene (TCE) has not yet been explored. Hence, this study investigated the mud volcano's microbial diversity functional potentiality in TCE degradation as well as their eco-physiological profiling using metabolic activity. Geochemical analysis of the mud volcano samples revealed variations in pH, temperature, and oxidation-reduction potential, indicating diverse environmental conditions. The Biolog Ecoplate™ carbon substrates utilization pattern showed that the Tween 80 was highly consumed by mud volcanic microbial community. Similarly, MicroResp® analysis results demonstrated that presence of additive C-substrates condition might enhanced the cellular respiration process within mud-volcanic microbial community. Full-length 16 S rRNA sequencing identified Proteobacteria as the dominant phylum, with genera like Pseudomonas and Hydrogenophaga associated with chloroalkane degradation, and methanotrophic bacteria such as Methylomicrobium and Methylophaga linked to methane oxidation. Functional analysis uncovered diverse metabolic functions, including sulfur and methane metabolism and hydrocarbon degradation, with specific genes involved in methane oxidation and sulfur metabolism. These findings provide insights into the microbial diversity and metabolic capabilities of mud volcano ecosystems, which could facilitate their effective application in the bioremediation of chlorinated compounds.
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Affiliation(s)
- Aslia Asif
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan; Doctoral Program in Science, Technology, Environment, and Mathematics, National Chung Cheng University, Chiayi County, Taiwan
| | - Suprokash Koner
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan
| | - Jung-Sheng Chen
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Ashiq Hussain
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan; Doctoral Program in Science, Technology, Environment, and Mathematics, National Chung Cheng University, Chiayi County, Taiwan
| | - Shih-Wei Huang
- Center for Environmental Toxin and Emerging Contaminant, Cheng Shiu University, Kaohsiung, Taiwan; Institute of Environmental Toxin and Emerging Contaminant, Cheng Shiu University, Kaohsiung, Taiwan
| | - Bashir Hussain
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan
| | - Bing-Mu Hsu
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan.
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4
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Urbaniak M, Mierzejewska-Sinner E, Bednarek A, Krauze K, Włodarczyk-Marciniak R. Microbial response to Nature-Based Solutions in urban soils: A comprehensive analysis using Biolog® EcoPlates™. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 928:172360. [PMID: 38614349 DOI: 10.1016/j.scitotenv.2024.172360] [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: 01/31/2024] [Revised: 04/06/2024] [Accepted: 04/08/2024] [Indexed: 04/15/2024]
Abstract
The study presents a comprehensive examination of changes in soil microbial functional diversity (hereafter called microbial activity) following the implementation of Nature-Based Solutions (NBS) in urban areas. Utilizing the Biolog® EcoPlates™ technique, the study explored variations in microbial diversity in urban soil under NBSs implementation across timespan of two years. Significant differences in microbial activity were observed between control location and those with NBS implementations, with seasonal variations playing a crucial role. NBS positively impacted soil microbial activity especially at two locations: infiltration basin and wild flower meadow showing the most substantial increase after NBS implementation. The study links rainfall levels to microbial functional diversity, highlighting the influence of climatic conditions on soil microbiome. The research investigates also the utilization of different carbon sources by soil microorganisms, shedding light on the specificity of substrate utilization across seasons and locations. The results demonstrate that NBSs implementations lead to changes in substrate utilization patterns, emphasizing the positive influence of NBS on soil microbial communities. Likewise, biodiversity indices, such as Shannon-Weaver diversity (H'), Shannon Evenness Index (E), and substrate richness index (S), exhibit significant variations in response to NBS. Notably, NBS implementation positively impacted H' and E indexes, especially in infiltration basin and wild flower meadow, underlining the benefits of NBS for enhancing microbial diversity. The obtained results demonstrated valuable insight into the dynamic interactions between NBS implementation and soil microbial activity. The findings underscore the potential of NBS to positively influence soil microbial diversity in urban environments, contributing to urban sustainability and soil health. The study emphasizes the importance of monitoring soil microbial activity to assess the effectiveness of NBS interventions and guides sustainable urban development practices.
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Affiliation(s)
- Magdalena Urbaniak
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
| | - Elżbieta Mierzejewska-Sinner
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
| | - Agnieszka Bednarek
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
| | - Kinga Krauze
- European Regional Centre for Ecohydrology of the Polish Academy of Sciences, Lodz, Poland.
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Decena BC, Dela Cruz TEE. Detection of Changes in Soil Microbial Community Physiological Profiles in Relation to Forest Types and Presence of Antibiotics Using BIOLOG EcoPlate. Indian J Microbiol 2024; 64:773-779. [PMID: 39011008 PMCID: PMC11246321 DOI: 10.1007/s12088-024-01294-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 04/21/2024] [Indexed: 07/17/2024] Open
Abstract
Soil is home to microbiota with diverse metabolic activities. These microorganisms play vital roles in many ecological processes. Thus, the assessment of microbial functional diversity is an important quality indicator of soil ecosystems. In this study, we collected soil samples from three distinct forest habitats, i.e., an agroforest, a primary forest (PF), and a secondary forest, within the Angat Watershed Reservation in Bulacan, Northern Philippines. Community-level physiological profiling (CLPP) was done with the BIOLOG EcoPlate™ to analyze the responses of the soil microbial communities from the three forest habitats in the absence or presence of antibiotics. The BIOLOG EcoPlate represents 31 utilizable carbon sources. Based on the CLPP analysis, soil samples from the PF showed significantly higher utilization of most carbon sources than the other forest types (p < 0.05). Thus, less disturbed forest types constitute more functionally diverse microbial communities. The presence of antibiotics significantly decreased the carbon utilization patterns of the soil microbial communities (p < 0.05), indicating the possible use of CLPP in monitoring contamination in soil.
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Affiliation(s)
- Benjamin C Decena
- The Graduate School, University of Santo Tomas, Espana Blvd., 1015 Manila, Philippines
- Fungal Biodiversity, Ecogenomics and Systematics-Metabolomics (FBeS) Group, Research Center for the Natural and Applied Sciences, University of Santo Tomas, Espana Blvd., 1015 Manila, Philippines
| | - Thomas Edison E Dela Cruz
- Department of Biological Sciences, College of Science, University of Santo Tomas, Espana Blvd., 1015 Manila, Philippines
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Nagy KK, Takács K, Németh I, Varga B, Grolmusz V, Molnár M, Vértessy BG. Novel enzymes for biodegradation of polycyclic aromatic hydrocarbons identified by metagenomics and functional analysis in short-term soil microcosm experiments. Sci Rep 2024; 14:11608. [PMID: 38773163 PMCID: PMC11109138 DOI: 10.1038/s41598-024-61566-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 05/07/2024] [Indexed: 05/23/2024] Open
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are highly toxic, carcinogenic substances. On soils contaminated with PAHs, crop cultivation, animal husbandry and even the survival of microflora in the soil are greatly perturbed, depending on the degree of contamination. Most microorganisms cannot tolerate PAH-contaminated soils, however, some microbial strains can adapt to these harsh conditions and survive on contaminated soils. Analysis of the metagenomes of contaminated environmental samples may lead to discovery of PAH-degrading enzymes suitable for green biotechnology methodologies ranging from biocatalysis to pollution control. In the present study, our goal was to apply a metagenomic data search to identify efficient novel enzymes in remediation of PAH-contaminated soils. The metagenomic hits were further analyzed using a set of bioinformatics tools to select protein sequences predicted to encode well-folded soluble enzymes. Three novel enzymes (two dioxygenases and one peroxidase) were cloned and used in soil remediation microcosms experiments. The experimental design of the present study aimed at evaluating the effectiveness of the novel enzymes on short-term PAH degradation in the soil microcosmos model. The novel enzymes were found to be efficient for degradation of naphthalene and phenanthrene. Adding the inorganic oxidant CaO2 further increased the degrading potential of the novel enzymes for anthracene and pyrene. We conclude that metagenome mining paired with bioinformatic predictions, structural modelling and functional assays constitutes a powerful approach towards novel enzymes for soil remediation.
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Affiliation(s)
- Kinga K Nagy
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem Rkp. 3., 1111, Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2., 1117, Budapest, Hungary
| | - Kristóf Takács
- PIT Bioinformatics Group, Eötvös Loránd University, 1117, Budapest, Hungary
| | - Imre Németh
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem Rkp. 3., 1111, Budapest, Hungary
| | - Bálint Varga
- PIT Bioinformatics Group, Eötvös Loránd University, 1117, Budapest, Hungary
| | - Vince Grolmusz
- PIT Bioinformatics Group, Eötvös Loránd University, 1117, Budapest, Hungary
- Uratim Ltd., 1118, Budapest, Hungary
| | - Mónika Molnár
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem Rkp. 3., 1111, Budapest, Hungary.
| | - Beáta G Vértessy
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem Rkp. 3., 1111, Budapest, Hungary.
- Institute of Enzymology, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2., 1117, Budapest, Hungary.
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7
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Li J, Li X, Fischel M, Lin X, Zhou S, Zhang L, Wang L, Yan J. Applying Red Mud in Cadmium Contamination Remediation: A Scoping Review. TOXICS 2024; 12:347. [PMID: 38787126 PMCID: PMC11125661 DOI: 10.3390/toxics12050347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024]
Abstract
Red mud is an industrial solid waste rarely utilized and often disposed of in landfills, resulting in resource waste and environmental pollution. However, due to its high pH and abundance of iron and aluminum oxides and hydroxides, red mud has excellent adsorption properties which can effectively remove heavy metals through ion exchange, adsorption, and precipitation. Therefore, red mud is a valuable resource rather than a waste byproduct. In recent years, red mud has been increasingly studied for its potential in wastewater treatment and soil improvement. Red mud can effectively reduce the migration and impact of heavy metals in soils and water bodies. This paper reviews the research results from using red mud to mitigate cadmium pollution in water bodies and soils, discusses the environmental risks of red mud, and proposes key research directions for the future management of red mud in cadmium-contaminated environments.
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Affiliation(s)
- Jintao Li
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China
| | - Xuwei Li
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People’s Republic of China, Nanjing 210042, China
| | - Matthew Fischel
- Sustainable Agricultural Systems Laboratory, USDA-Agricultural Research Service, Beltsville, MD 20705, USA
| | - Xiaochen Lin
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People’s Republic of China, Nanjing 210042, China
| | - Shiqi Zhou
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China
| | - Lei Zhang
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China
| | - Lei Wang
- Ecological Environment Bureau of Chuzhou City, Chuzhou 239000, China
| | - Jiali Yan
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China
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Tang S, Gong J, Song B, Li J, Cao W, Zhao J. Co-influence of biochar-supported effective microorganisms and seasonal changes on dissolved organic matter and microbial activity in eutrophic lake. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 923:171476. [PMID: 38458471 DOI: 10.1016/j.scitotenv.2024.171476] [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: 11/11/2023] [Revised: 02/27/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
DOM (dissolved organic matter) play a crucial role in lakes' geochemical and carbon cycles. Eutrophication evolution would influence nutrient status of waters and investigating the DOM variation helps a better understanding of bioremediation on environmental behavior of DOM in eutrophic lakes. In our study, the contents, compositions and characteristics of systematic DOM&SOM (sediment organic matter) were greatly influenced by seasonal changes. But the effective bioremediations obviously reduced the DOM concentration and thus mitigated the eutrophication outbreak risks in water bodies due to the increased MBC (microbial biomass carbon), microbial activity and metabolism. In early summer, the overall DOM in each treatment were readily low levels and derived from both autochthonous and exogenous origins, dominated by fulvic acid-like. In midsummer, the DOM contents and characteristics in each treatment increased significantly as phytoplankton activity improved, and the majority of DOM were humic acid-like and mainly of biological origin. The greatest differences of enzymes, MBC, microbial metabolism and DOM&SOM removal among different treatments were observed in summer months. In autumn, the systematic DOM&SOM slightly reduced due to the deceased microbial activity, in which the microbial humic acids were main component and derived from endogenous sources. Additionally, the gradually decreased SOM with cultivated time in each treatment was a result of microbiological conversion of SOM into DOM. For various treatments, BE, BE.A, BE.C and BE.E increased the MBC, enzymatic and microbial activities due to the application of biochar-supported EMs. Among these, BE and BE.A, especially BE.A with oxygen supplement, achieved the most desirable effect on reducing systematic DOM&SOM levels and increasing enzymatic and microbial activities. The group of EM also reduced the levels of DOM&SOM as improved degradation of EMs for DOM. However, BC, BE.C and BE.E finally did not achieved the desirable effect on reducing DOM&SOM due to the suppression of microbial activities, respectively, from high dose of biochar, weakening of dominant species and additional introduction of EMs in low liveness.
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Affiliation(s)
- Siqun Tang
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Jilai Gong
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China.
| | - Biao Song
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Juan Li
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Weicheng Cao
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Jun Zhao
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
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Li SX, Gao XR, Yi J, Jia LY, Ren J. A new strategy of using periphyton to simultaneously promote remediation of PAHs-contaminated soil and production of safer crops. ENVIRONMENTAL RESEARCH 2024; 246:118149. [PMID: 38199466 DOI: 10.1016/j.envres.2024.118149] [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: 10/18/2023] [Revised: 12/20/2023] [Accepted: 01/05/2024] [Indexed: 01/12/2024]
Abstract
Contaminated farmland leads to serious problems for human health through biomagnification in the soil-crop-human chain. In this paper, we have established a new soil remediation strategy using periphyton for the production of safer rice. Four representative polycyclic aromatic hydrocarbons (PAHs), including phenanthrene (Phe), pyrene (Pyr), benzo[b]fluoranthene (BbF), and benzo[a]pyrene (BaP), were chosen to generate artificially contaminated soil. Pot experiments demonstrated that in comparison with rice cultivation in polluted soil with ΣPAHs (50 mg kg-1) but without periphyton, adding periphyton decreased ΣPAHs contents in both rice roots and shoots by 98.98% and 99.76%, respectively, and soil ΣPAHs removal reached 94.19%. Subsequently, risk assessment of ΣPAHs based on toxic equivalent concentration (TEQ), pollution load index (PLI), hazard index (HI), toxic unit for PAHs mixture (TUm), and incremental lifetime cancer risk (ILCR) indicated that periphyton lowered the ecological and carcinogenicity risks of PAHs. Besides, the role of periphyton in enhancing the rice productivity was revealed. The results indicated that periphyton alleviated the oxidative stress of PAHs on rice by reducing malondialdehyde (MDA) content and increasing total antioxidant capacity (T-AOC). Periphyton reduced the toxic stress of PAHs on the soil by promoting soil carbon cycling and metabolic activities as well. Periphyton also improved the soil's physicochemical properties, such as the percentage of soil aggregate, the contents of humic substances (HSs) and nutrients, which increased rice biomass. These findings confirmed that periphyton could improve rice productivity by enhancing soil quality and health. This study provides a new eco-friendly strategy for soil remediation and simultaneously enables the production of safe crops on contaminated land.
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Affiliation(s)
- Su-Xin Li
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, No.2 Linggong Road, Dalian, 116024, PR China
| | - Xiao-Rong Gao
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, No.2 Linggong Road, Dalian, 116024, PR China.
| | - Jun Yi
- Key Laboratory of Edible Oil Quality and Safety for State Market Regulation, Wuhan, 430040, PR China
| | - Ling-Yun Jia
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, No.2 Linggong Road, Dalian, 116024, PR China
| | - Jun Ren
- MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, No.2 Linggong Road, Dalian, 116024, PR China
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10
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Liu H, Jing H. The Vertical Metabolic Activity and Community Structure of Prokaryotes along Different Water Depths in the Kermadec and Diamantina Trenches. Microorganisms 2024; 12:708. [PMID: 38674652 PMCID: PMC11052081 DOI: 10.3390/microorganisms12040708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 04/28/2024] Open
Abstract
Prokaryotes play a key role in particulate organic matter's decomposition and remineralization processes in the vertical scale of seawater, and prokaryotes contribute to more than 70% of the estimated remineralization. However, little is known about the microbial community and metabolic activity of the vertical distribution in the trenches. The composition and distribution of prokaryotes in the water columns and benthic boundary layers of the Kermadec Trench and the Diamantina Trench were investigated using high-throughput sequencing and quantitative PCR, together with the Biolog EcoplateTM microplates culture to analyze the microbial metabolic activity. Microbial communities in both trenches were dominated by Nitrososphaera and Halobacteria in archaea, and by Alphaproteobacteria and Gammaproteobacteria in bacteria, and the microbial community structure was significantly different between the water column and the benthic boundary layer. At the surface water, amino acids and polymers were used preferentially; at the benthic boundary layers, amino acids and amines were used preferentially. Cooperative relationships among different microbial groups and their carbon utilization capabilities could help to make better use of various carbon sources along the water depths, reflected by the predominantly positive relationships based on the co-occurrence network analysis. In addition, the distinct microbial metabolic activity detected at 800 m, which was the lower boundary of the twilight zone, had the lowest salinity and might have had higher proportions of refractory carbon sources than the shallower water depths and benthic boundary layers. This study reflected the initial preference of the carbon source by the natural microbes in the vertical scale of different trenches and should be complemented with stable isotopic tracing experiments in future studies to enhance the understanding of the complex carbon utilization pathways along the vertical scale by prokaryotes among different trenches.
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Affiliation(s)
- Hao Liu
- CAS Key Laboratory for Experimental Study under Deep-Sea Extreme Conditions, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China;
| | - Hongmei Jing
- CAS Key Laboratory for Experimental Study under Deep-Sea Extreme Conditions, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China;
- HKUST-CAS Sanya Joint Laboratory of Marine Science Research, Chinese Academy of Sciences, Sanya 572000, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
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11
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Huang Z, Qin Y, He X, Zhang M, Ren X, Yu W, Ji K. Analysis on metabolic functions of rhizosphere microbial communities of Pinus massoniana provenances with different carbon storage by Biolog Eco microplates. Front Microbiol 2024; 15:1365111. [PMID: 38511000 PMCID: PMC10951076 DOI: 10.3389/fmicb.2024.1365111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/16/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction Rhizosphere microorganisms are influenced by vegetation. Meanwhile, they respond to vegetation through their own changes, developing an interactive feedback system between microorganisms and vegetation. However, it is still unclear whether the functional diversity of rhizosphere soil microorganisms varies with different carbon storage levels and what factors affect the functional diversity of rhizosphere soil microorganisms. Methods In this study, the Biolog-Eco microplate technique was used to analyze the metabolic diversity of carbon source of rhizosphere soil microorganisms from 6 Pinus massoniana provenances with three levels of high, medium and low carbon storage. Results The results showed that the average well color development(AWCD) value of rhizosphere microorganisms was significantly positive correlated with carbon storage level of Pinus massoniana (p < 0.05). The AWCD value, Simpson and Shannon diversity of high carbon sequestrance provenances were 1.40 (144h incubation) 0.96 and 3.24, respectively, which were significantly higher (p < 0.05) than those of other P. massoniana provenances. The rhizosphere microbial AWCD, Shannon and Simpson diversity of the 6 provenances showed the same variation trend (SM>AY>QJ>SX>HF>SW). Similarly, microbial biomass carbon (MBC) content was positively correlated with carbon storage level, and there were significant differences among high, medium and low carbon storage provenances. The PCA results showed that the differences in the carbon source metabolism of rhizosphere microorganisms were mainly reflected in the utilization of amino acids, carboxylic acids and carbohydrates. Pearson correlation analysis showed that soil organic carbon (SOC), total nitrogen (TN) and pH were significantly correlated with rhizosphere AWCD (p < 0.05). Conclusion Soil properties are important factors affecting rhizosphere microbial carbon source metabolism. The study confirmed that the microorganisms of high carbon storage provenances had relatively high carbon metabolic activity. Among them, the carbon metabolic activity of rhizosphere microorganisms of SM provenance was the highest, which was the preferred provenances in effective ecological service function.
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Affiliation(s)
| | | | | | | | | | | | - Kongshu Ji
- State Key Laboratory of Tree Genetics and Breeding, Key Open Laboratory of Forest Genetics and Gene Engineering of National Forestry and Grassland Administration, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
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12
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Liu W, Wang Z, Chai G, Deng W. Effect of carbon nanomaterials on functional diversity and structure of soil microbial community under single and repeated exposures. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:115896-115906. [PMID: 37897582 DOI: 10.1007/s11356-023-30653-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 10/20/2023] [Indexed: 10/30/2023]
Abstract
The extensive application of carbon nanomaterials (CNMs) has attracted increasing studies concerned about its environmental impact. These studies focus on single exposure to CNMs, but repeated exposures with relatively low concentration are more likely to occur under actual exposure scenario. In this study, we studied the metabolic functional and structure of soil microorganism community under single and repeated exposures to multiwalled carbon nanotubes (MW), graphene (GR), and fullerene (C60) by Biolog EcoPlates and high-throughput sequencing. Our findings revealed that repeated exposures to CNMs significantly increase the metabolic activity and diversity of the soil microbial community as compared with single exposure. Principal component and similarity analysis not only indicated that GR exerted a stronger effect on soil microbial diversity among three exposures compared to C60 and MW, but also revealed that the metabolic activity of the soil microbial community was more affected by the exposure scenarios of CNMs than the type of CNMs. These findings elucidated the effect of CNMs under different exposure scenarios on soil microorganism community, providing a new perspective on the risk assessment of nanomaterials.
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Affiliation(s)
- Wenjuan Liu
- Institute of Loess Plateau, Shanxi University, Taiyuan, 030006, China
| | - Zihan Wang
- Institute of Loess Plateau, Shanxi University, Taiyuan, 030006, China
| | - Guoli Chai
- Institute of Loess Plateau, Shanxi University, Taiyuan, 030006, China
| | - Wenbo Deng
- Institute of Loess Plateau, Shanxi University, Taiyuan, 030006, China.
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13
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Zhu N, Yu Q, Song L, Sheng H. The Inhibiting Effects of High-Dose Biochar Application on Soil Microbial Metagenomics and Rice ( Oryza sativa L.) Production. Int J Mol Sci 2023; 24:15043. [PMID: 37894726 PMCID: PMC10606461 DOI: 10.3390/ijms242015043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Biochar is usually considered as an organic improver which can improve soil and increase crop yields. However, the unrestricted application of biochar to normal-fertility farmland will cause chemical stress on crops and affect agricultural production. At present, the effects and mechanisms of high-dose applications of biochar on rice (Oryza sativa L.) production and soil biological characteristics have not been fully studied. In this greenhouse pot experiment, combined with soil microbial metagenomics, three treatments in triplicates were conducted to explore the responses of rice production, soil chemical properties, and soil biological properties to high-dose applications of biochar (5%, w/w) prepared using peanut waste (peanut hulls and straw). The results show that peanut hulls, with a loose texture and pore structure, are a raw material with stronger effects for preparing biochar than peanut straw in terms of its physical structure. In a rice monoculture system, high-dose applications of biochar (5%, w/w) can slightly increase the grains per spike, while significantly inhibiting the spike number per pot and the percentage of setting. High-dose applications of biochar also have significant negative effects on the diversity and stability of soil bacterial and archaeal communities. Moreover, the microbial metabolism and nutrient cycling processes are also significantly affected by changing the soil carbon/nitrogen ratio. This study discusses the response mechanisms of rice production and soil biology to high-dose biochar applications, and complements the understanding of irrational biochar application on agricultural production and land sustainability.
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Affiliation(s)
- Nanyan Zhu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China;
| | - Qiaoqiao Yu
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou 225000, China;
| | - Lingqi Song
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225000, China;
| | - Haijun Sheng
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225000, China;
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14
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Wang B, Lin Y, Yu W, Xia Q, Ali A, Wei F, Dai C, Zhang J, Cai Z, Zhao J. The loss of microbial autotoxin degradation functions is associated with the decline of beneficial bacterial agents induced by phenolic acids. Microbiol Spectr 2023; 11:e0338022. [PMID: 37698393 PMCID: PMC10581185 DOI: 10.1128/spectrum.03380-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 07/07/2023] [Indexed: 09/13/2023] Open
Abstract
Continuous cultivation of medicinal plants can disrupt the rhizosphere's microbial community. There is still a need to know about the beneficial bacterial community, their putative drivers, and the potential functions they may have. This study used different growth years of Sanqi ginseng (Panax notoginseng) with root rot to look at the beneficial microbial community structure, the function of microbial carbon source utilization, and the function of rhizosphere soil metabolism. The beneficial bacterial community changed and the relative abundance of beneficial agents was suppressed significantly with the successive Sanqi ginseng plantings. The carbon source utilization capacity and diversity increased significantly, whereas three autotoxin degradation-related pathways (biosynthesis of other secondary metabolites, metabolism of terpenoids and polyketides, and xenobiotics biodegradation and metabolism) were downregulated considerably with planting year extended. The changes in the beneficial agents were driven by the shifts in phenolic acid profiles, and the decline of beneficial microbes led to the loss of microbial autotoxin degradation functions. Overall, these results provide insight into beneficial microbes, microbial functions, phenolic acids, and their interactions, and these findings are essential for maintaining healthy and sustainable cultivation of Sanqi ginseng. IMPORTANCE Sanqi ginseng is a valuable perennial Chinese herb with various benefits for human health. However, continuous cultivation causes a high incidence of root rot disease, which leads to decreased yield and serious economic losses and ultimately impedes the sustainable development of Chinese medicine production. The significance of this study is to reveal the pattern of changes in beneficial bacteria and their related functions in root rot diseased rhizosphere with the successive planting years of Sanqi ginseng. This study found that the decline of beneficial bacterial agents mediated by phenolic acid profiles appears to be associated with the loss of microbial autotoxin degradation functions. This result may have new implications for deciphering the causes of Sanqi ginseng's continuous cropping obstacles.
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Affiliation(s)
- Baoying Wang
- School of Geography, Nanjing Normal University, Nanjing, China
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yulan Lin
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Wenhao Yu
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Qing Xia
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Ahmad Ali
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Fugang Wei
- Miaoxiang Sanqi Technology Co., Ltd., Wenshan, China
| | - Chuanchao Dai
- College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Jinbo Zhang
- School of Geography, Nanjing Normal University, Nanjing, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, China
| | - Zucong Cai
- School of Geography, Nanjing Normal University, Nanjing, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
| | - Jun Zhao
- School of Geography, Nanjing Normal University, Nanjing, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
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15
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Xu G, Li G, Wu J, Ma W, Wang H, Yuan J, Li X. Effects of rainfall amount and frequencies on soil net nitrogen mineralization in Gahai wet meadow in the Qinghai-Tibetan Plateau. Sci Rep 2023; 13:14860. [PMID: 37684356 PMCID: PMC10491659 DOI: 10.1038/s41598-023-39267-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 07/22/2023] [Indexed: 09/10/2023] Open
Abstract
Global climate change has led to a significant increase in the frequency of extreme rainfall events in the Qinghai-Tibetan Plateau (QTP), thus potentially increasing the annual rainfall amounts and, consequently, affecting the net soil nitrogen (N) mineralization process. However, few studies on the responses of the soil net N mineralization rates to the increases in rainfall amounts and frequencies in alpine wet meadows have been carried out. Therefore, the present study aims to assess the effects of rainfall frequency and amount changes on the N fixation capacity of wet meadow soils by varying the rainfall frequency and amount in the Gahai wet meadow in the northeastern margin of the QTP during the plant-growing season in 2019. The treatment scenarios consisted of ambient rain (CK) and supplementary irrigation at a rate of 25 mm, with different irrigation frequencies, namely weekly (DF1), biweekly (DF2), every three weeks (DF3), and every four weeks (DF4). According to the obtained results, the increased rainfall frequency and amount decreased the soil mineral N stock and increased the aboveground vegetation biomass (AB) amounts and soil water contents in the wet meadows of the QTP. Ammonium (NH4+-N) and nitrate N (NO3--N) contributed similarly to the mineral N contents. However, the ammonification process played a major role in the soil mineralization process. The effects of increasing rainfall amount and frequency on N mineralization showed seasonal variations. The N mineralization rate showed a single-peaked curve with increasing soil temperature during the rapid vegetation growth phase, reaching the highest value in August. In addition, the N mineralization rates showed significant positive correlations with soil temperatures and NH4+-N contents and a significant negative correlation with AB (P < 0.05). The results of this study demonstrated the key role of low extreme rainfall event frequencies in increasing the net soil N mineralization rates in the vegetation growing season, which is detrimental to soil N accumulation, thereby affecting the effectiveness of soil N contents.
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Affiliation(s)
- Guorong Xu
- College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Guang Li
- College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China.
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, 730070, China.
| | - Jiangqi Wu
- College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China.
| | - Weiwei Ma
- College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China
| | - Haiyan Wang
- College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China
| | - Jianyu Yuan
- College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China
| | - Xiaodan Li
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, China
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16
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Barros DJ, Carvalho GA, de Chaves MG, Vanzela LS, Kozusny-Andreani DI, Guarda EA, Neu V, de Morais PB, Tsai SM, Navarrete AA. Microbial metabolic activity in Amazon floodplain forest and agricultural soils. Front Microbiol 2023; 14:1144062. [PMID: 37293212 PMCID: PMC10244710 DOI: 10.3389/fmicb.2023.1144062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/24/2023] [Indexed: 06/10/2023] Open
Abstract
Microorganisms play an essential role in ecosystem functions. An increasingly used method for conducting functional analyses of a soil microbial community is based on the physiological profile at the community level. This method allows the metabolic capacity of microorganisms to be assessed based on patterns of carbon consumption and derived indices. In the present study, the functional diversity of microbial communities was assessed in soils from seasonally flooded-forest (FOR) and -traditional farming systems (TFS) in Amazonian floodplains flooded with black, clear, and white water. The soils of the Amazon floodplains showed differences in the metabolic activity of their microbial communities, with a general trend in activity level of clear water floodplain > black water floodplain > white water floodplain. The redundancy analysis (RDA) indicated that soil moisture (flood pulse) was the most important environmental parameter in determining the metabolic activity of the soil microbial communities in the black, clear, and white floodplains. In addition, the variance partitioning analysis (VPA) indicated that the microbial metabolic activity of the soil was more influenced by water type (41.72%) than by seasonality (19.55%) and land use type (15.28%). The soil microbiota of the white water floodplain was different from that of the clear water and black water floodplains in terms of metabolic richness, as the white water floodplain was mainly influenced by the low substrate use during the non-flooded period. Taken together, the results show the importance of considering soils under the influence of flood pulses, water types, and land use as environmental factors when recognizing functional diversity and ecosystem functioning in Amazonian floodplains.
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Affiliation(s)
- Dayane J. Barros
- Graduate Program in Biodiversity and Biotechnology (BIONORTE), Federal University of Tocantins (UFT), Palmas, Brazil
| | - Glauber A. Carvalho
- Faculty of Engineering, Architecture and Urbanism, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Miriam G. de Chaves
- Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, Brazil
| | - Luiz S. Vanzela
- Graduate Program in Environmental Sciences, University Brazil, Fernandópolis, Brazil
| | | | - Emerson A. Guarda
- Graduate Program in Biodiversity and Biotechnology (BIONORTE), Federal University of Tocantins (UFT), Palmas, Brazil
| | - Vania Neu
- Federal Rural University of Amazonia (UFRA), Belém, Brazil
| | - Paula B. de Morais
- Graduate Program in Biodiversity and Biotechnology (BIONORTE), Federal University of Tocantins (UFT), Palmas, Brazil
| | - Siu M. Tsai
- Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, Brazil
| | - Acacio A. Navarrete
- Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, Brazil
- Graduate Program in Environmental Sciences, University Brazil, Fernandópolis, Brazil
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17
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Mierzejewska E, Tołoczko W, Urbaniak M. Behind the plant-bacteria system: The role of zucchini and its secondary metabolite in shaping functional microbial diversity in MCPA-contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 867:161312. [PMID: 36603641 DOI: 10.1016/j.scitotenv.2022.161312] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/27/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
MCPA (2-methyl-4-chlorophenoxyacetic acid) contamination is an emerging problem, especially in water reservoirs. The early removal of MCPA residues from soil can prevent its spread to untreated areas. It has been found that the growth of cucurbits and the addition of selected plant secondary metabolites (PSMs) can stimulate MCPA removal from soil. However, the effect of these treatments on soil microbial activity remains poorly studied. Hence, the aim of this research was to evaluate the influence of zucchini (C. pepo cv Atena Polka) and its characteristic PSM: syringic acid (SA) on the functional diversity of soil microorganisms in MCPA-contaminated soil using Biolog® EcoPlates™. It also examines soil physicochemical properties and the growth parameters of zucchini. Microbial activity was enhanced by both zucchini cultivation and SA. All unplanted variants showed significantly lower microbial activity (average well color development, AWCD, ranging from 0.35 to 0.51) than the planted ones (AWCD ranging from 0.77 to 1.16). SA also stimulated microbial activity in the soil: a positive effect was observed from the beginning of the experiment in the unplanted variants, but over a longer time span in the planted variants. SA ameliorated the toxic effect of MCPA on the studied plants, especially in terms of photosynthetic pigment production: the MCPA+SA group demonstrated significantly increased chlorophyll content (401 ± 4.83 μg/g), compared to the MCPA group without SA (338 ± 50.1 μg/g). Our findings demonstrated that zucchini and the amendment of soils with SA, the characteristic PSM of cucurbits, can shape functional diversity in MCPA-contaminated soil. The changes of soil properties caused by the application of both compounds can trigger changes in functional diversity. Hence, both SA and MCPA exert indirect and direct effects on soil microbial activity.
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Affiliation(s)
- Elżbieta Mierzejewska
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland.
| | - Wojciech Tołoczko
- Department of Physical Geography, Faculty of Geography, University of Lodz, Prez. Gabriela Narutowicz 88, 90-139 Lodz, Poland
| | - Magdalena Urbaniak
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland; European Regional Centre for Ecohydrology of the Polish Academy of Sciences, Tylna 3, 90-364 Lodz, Poland; Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology in Prague, Technicka 3, 166 28 Prague, Czech Republic
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18
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Zhang W, Wang J, Zhu L, Wang J, Mao S, Yan X, Wen S, Wang L, Dong Z, Kim YM. New insights into the effects of antibiotics and copper on microbial community diversity and carbon source utilization. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023:10.1007/s10653-023-01491-1. [PMID: 36939996 DOI: 10.1007/s10653-023-01491-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 01/15/2023] [Indexed: 06/18/2023]
Abstract
Residual antibiotics (ABs) and heavy metals (HMs) are continuously released from soil, reflecting their intensive use and contamination of water and soil, posing an environmental problem of great concern. Relatively few studies exist of the functional diversity of soil microorganisms under the combined action of ABs and HMs. To address this deficiency, BIOLOG ECO microplates and the Integrated Biological Responses version 2 (IBRv2) method were used to comprehensively explore the effects of single and combined actions of copper (Cu) and enrofloxacin (ENR), oxytetracycline (OTC), and sulfadimidine (SM2) on the soil microbial community. The results showed that the high concentration (0.80 mmol/kg) compound group had a significant effect on average well color development (AWCD) and OTC showed a dose-response relationship. The results of IBRv2 analysis showed that the single treatment group of ENR or SM2 had a significant effect on soil microbial communities, and the IBRv2 of E1 was 5.432. Microbes under ENR, SM2, and Cu stress had more types of available carbon sources, and all treatment groups were significantly more enriched with microorganisms having D-mannitol and L-asparagine as carbon sources. This study confirms that the combined effects of ABs and HMs can inhibit or promote the function of soil microbial communities. In addition, this paper will provide new insights into IBRv2 as an effective method to evaluate the impacts of contaminants on soil health.
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Affiliation(s)
- Wenjie Zhang
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Jinhua Wang
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China.
| | - Lusheng Zhu
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Jun Wang
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Shushuai Mao
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Xiaojing Yan
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Shengfang Wen
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Lanjun Wang
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Zikun Dong
- Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Taian, 271018, People's Republic of China
| | - Young Mo Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-Gu, Seoul, 04763, Republic of Korea
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Masigol H, Grossart HP, Taheri SR, Mostowfizadeh-Ghalamfarsa R, Pourmoghaddam MJ, Bouket AC, Khodaparast SA. Utilization of Low Molecular Weight Carbon Sources by Fungi and Saprolegniales: Implications for Their Ecology and Taxonomy. Microorganisms 2023; 11:microorganisms11030782. [PMID: 36985355 PMCID: PMC10052706 DOI: 10.3390/microorganisms11030782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/08/2023] [Accepted: 03/16/2023] [Indexed: 03/22/2023] Open
Abstract
Contributions of fungal and oomycete communities to freshwater carbon cycling have received increasing attention in the past years. It has been shown that fungi and oomycetes constitute key players in the organic matter cycling of freshwater ecosystems. Therefore, studying their interactions with dissolved organic matter is crucial for understanding the aquatic carbon cycle. Therefore, we studied the consumption rates of various carbon sources using 17 fungal and 8 oomycete strains recovered from various freshwater ecosystems using EcoPlate™ and FF MicroPlate™ approaches. Furthermore, phylogenetic relationships between strains were determined via single and multigene phylogenetic analyses of the internal transcribed spacer regions. Our results indicated that the studied fungal and oomycete strains could be distinguished based on their carbon utilization patterns, as indicated by their phylogenetic distance. Thereby, some carbon sources had a higher discriminative strength to categorize the studied strains and thus were applied in a polyphasic approach. We concluded that studying the catabolic potential enables a better understanding of taxonomic relationships and ecological roles of fungal vs. oomycete strains.
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Affiliation(s)
- Hossein Masigol
- Plankton and Microbial Ecology, Leibniz Institute for Freshwater Ecology and Inland Fisheries (IGB), 16775 Neuglobsow, Germany; (H.M.); (S.R.T.)
- Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht 4199613776, Iran; (M.J.P.); (S.A.K.)
| | - Hans-Peter Grossart
- Plankton and Microbial Ecology, Leibniz Institute for Freshwater Ecology and Inland Fisheries (IGB), 16775 Neuglobsow, Germany; (H.M.); (S.R.T.)
- Institute for Biochemistry and Biology, Potsdam University, 14469 Potsdam, Germany
- Correspondence: ; Tel.: +49-(0)-3308269991
| | - Seyedeh Roksana Taheri
- Plankton and Microbial Ecology, Leibniz Institute for Freshwater Ecology and Inland Fisheries (IGB), 16775 Neuglobsow, Germany; (H.M.); (S.R.T.)
| | | | - Mohammad Javad Pourmoghaddam
- Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht 4199613776, Iran; (M.J.P.); (S.A.K.)
| | - Ali Chenari Bouket
- East Azarbaijan Agricultural and Natural Resources Research and Education Centre, Plant Protection Research Department, Agricultural Research, Education and Extension Organization (AREEO), Tabriz 5355179854, Iran;
| | - Seyed Akbar Khodaparast
- Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht 4199613776, Iran; (M.J.P.); (S.A.K.)
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20
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Tao Y, Shen L, Han S, Li Z, Cui Y, Lin Y, Qu J, Zhang Y. Metagenomic study of carbon metabolism in black soil microbial communities under lead-lanthanum stress. JOURNAL OF HAZARDOUS MATERIALS 2023; 446:130666. [PMID: 36580779 DOI: 10.1016/j.jhazmat.2022.130666] [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: 10/13/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
Pollution of soil environments with heavy metals (HMs) and rare earth elements (REEs) cannot be ignored. We aimed to determine the effects of lead combined with lanthanum (Pb-La) on microbial community structure, carbon metabolism, and differences in carbon source utilization in black soils using EcoPlates™ and a macrogenomic approach. We found that Pb and La contents and the microbial community structure together influence and shape the response of soil carbon metabolism to Pb-La. Compared with controls, microorganisms under pollution stress preferentially use phenolic and carboxylic acids as growth carbon sources. Under Pb-La stress, the relative abundance of Proteobacteria significantly increased, thereby selectively displacing heavy metal-sensitive phyla, such as Chloroflexi, Acidobacteria, and Thaumarchaeota. Altered functional potential of the microbial carbon cycle manifested as differences in carbon metabolism, methane metabolism, and carbon fixation pathways. Furthermore, an appropriate concentration of La can reduce the environmental toxicity of Pb, whereas a high concentration of La has synergistic toxicity with Pb. These findings have important implications for understanding the impact of HM-REE contamination in microbial communities and the functions associated with carbon metabolism in black soils.
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Affiliation(s)
- Yue Tao
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Lu Shen
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Siyue Han
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Zixu Li
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Yunhe Cui
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Yulong Lin
- School of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China
| | - Jianhua Qu
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China
| | - Ying Zhang
- School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China.
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21
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Migration Rates on Swim Plates Vary between Escherichia coli Soil Isolates: Differences Are Associated with Variants in Metabolic Genes. Appl Environ Microbiol 2023; 89:e0172722. [PMID: 36695629 PMCID: PMC9972950 DOI: 10.1128/aem.01727-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
This study investigates migration phenotypes of 265 Escherichia coli soil isolates from the Buffalo River basin in Minnesota, USA. Migration rates on semisolid tryptone swim plates ranged from nonmotile to 190% of the migration rate of a highly motile E. coli K-12 strain. The nonmotile isolate, LGE0550, had mutations in flagellar and chemotaxis genes, including two IS3 elements in the flagellin-encoding gene fliC. A genome-wide association study (GWAS), associating the migration rates with genetic variants in specific genes, yielded two metabolic variants (rygD-serA and metR-metE) with previous implications in chemotaxis. As a novel way of confirming GWAS results, we used minimal medium swim plates to confirm the associations. Other variants in metabolic genes and genes that are associated with biofilm were positively or negatively associated with migration rates. A determination of growth phenotypes on Biolog EcoPlates yielded differential growth for the 10 tested isolates on d-malic acid, putrescine, and d-xylose, all of which are important in the soil environment. IMPORTANCE E. coli is a Gram-negative, facultative anaerobic bacterium whose life cycle includes extra host environments in addition to human, animal, and plant hosts. The bacterium has the genomic capability of being motile. In this context, the significance of this study is severalfold: (i) the great diversity of migration phenotypes that we observed within our isolate collection supports previous (G. NandaKafle, A. A. Christie, S. Vilain, and V. S. Brözel, Front Microbiol 9:762, 2018, https://doi.org/10.3389/fmicb.2018.00762; Y. Somorin, F. Abram, F. Brennan, and C. O'Byrne, Appl Environ Microbiol 82:4628-4640, 2016, https://doi.org/10.1128/AEM.01175-16) ideas of soil promoting phenotypic heterogeneity, (ii) such heterogeneity may facilitate bacterial growth in the many different soil niches, and (iii) such heterogeneity may enable the bacteria to interact with human, animal, and plant hosts.
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22
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Zheng X, Song W, Ding S, Han L, Dong J, Feng Y, Feng Y. Environmental risk of microplastics after field aging: Reduced rice yield without mitigating yield-scale ammonia volatilization from paddy soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 311:119947. [PMID: 36481464 DOI: 10.1016/j.envpol.2022.119947] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/23/2022] [Accepted: 08/08/2022] [Indexed: 05/20/2023]
Abstract
Microplastics (MPs, <5 mm) are enriched in paddy ecosystems as emerging environmental pollutants. Biochar (BC) is a controversial recalcitrant carbon product that poses potential environmental risks. The presence of these two exogenous organic substances has been demonstrated to have impacts on soil nitrogen cycling and crop production. However, the after-effects of MPs and BC on soil ammonia (NH3) volatilization and rice yield after field aging remain unexplored. In this study, two common MPs, including polyethylene (PE) and polyacrylonitrile (PAN), and BC were selected for rice growing season observations to study the impacts on soil NH3 volatilization and rice yield after field aging. The results showed that the reduction of cumulative soil NH3 losses by MPs was around 45% after one-year field aging, which was within the range of 40-57% in the previous rice season. Abatement of NH3 volatilization by MPs mainly occurred in basal fertilization and was related to floodwater pH. Besides, the reduction rate of NH3 volatilization by BC and MPs + BC was enhanced after field aging (63% and 50-57%) compared to that in the previous rice season (5% and 11-19%), with the abatement process occurring in the first supplementary fertilization. There was a significant positive correlation between cumulative NH3 volatilization and soil urease activity. Notably, field aging removed the positive effect of MPs and MPs + BC in reducing yield-scale NH3 losses in the previous rice season (∼62%). Furthermore, despite BC affecting rice yield insignificantly after field aging, the presence of MPs led to a significant 17-19% reduction in rice yield. Our findings reveal that differences in the after-effects of BC and MPs in field aging emerge, where the negative impacts of MPs on soil NH3 abatement and crop yield are progressively becoming apparent and should be taken into serious consideration.
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Affiliation(s)
- Xuebo Zheng
- Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Wenjing Song
- Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Shudong Ding
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Lanfang Han
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Jianxin Dong
- Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Yuanyuan Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
| | - Yanfang Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
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23
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Langrand J, Lounès-Hadj Sahraoui A, Duclercq J, Raveau R, Laruelle F, Bert V, Facon N, Tisserant B, Fontaine J. Coriander ( Coriandrum sativum) Cultivation Combined with Arbuscular Mycorrhizal Fungi Inoculation and Steel Slag Application Influences Trace Elements-Polluted Soil Bacterial Functioning. PLANTS (BASEL, SWITZERLAND) 2023; 12:618. [PMID: 36771702 PMCID: PMC9920375 DOI: 10.3390/plants12030618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/19/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
The cultivation of aromatic plants for the extraction of essential oils has been presented as an innovative and economically viable alternative for the remediation of areas polluted with trace elements (TE). Therefore, this study focuses on the contribution of the cultivation of coriander and the use of arbuscular mycorrhizal fungi (AMF) in combination with mineral amendments (steel slag) on the bacterial function of the rhizosphere, an aspect that is currently poorly understood and studied. The introduction of soil amendments, such as steel slag or mycorrhizal inoculum, had no significant effect on coriander growth. However, steel slag changed the structure of the bacterial community in the rhizosphere without affecting microbial function. In fact, Actinobacteria were significantly less abundant under slag-amended conditions, while the relative proportion of Gemmatimonadota increased. On the other hand, the planting of coriander affects the bacterial community structure and significantly increased the bacterial functional richness of the amended soil. Overall, these results show that planting coriander most affected the structure and functioning of bacterial communities in the TE-polluted soils and reversed the effects of mineral amendments on rhizosphere bacterial communities and their activities. This study highlights the potential of coriander, especially in combination with steel slag, for phytomanagement of TE-polluted soils, by improving soil quality and health.
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Affiliation(s)
- Julien Langrand
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV-UR 4492), Université Littoral Côte d’Opale, SFR Condorcet FR CNRS 3417, CS 80699, 62228 Calais, France
| | - Anissa Lounès-Hadj Sahraoui
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV-UR 4492), Université Littoral Côte d’Opale, SFR Condorcet FR CNRS 3417, CS 80699, 62228 Calais, France
| | - Jérôme Duclercq
- Unité Écologie et Dynamique des Systèmes Anthropisés (EDYSAN UMR CNRS 7058 CNRS), Université de Picardie Jules Verne, UFR des Sciences, 80029 Amiens, France
| | - Robin Raveau
- Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), UMR Santé et Agroécologie du Vignoble (SAVE), Bordeaux Sciences Agro, ISVV, 33882 Villenave d’Ornon, France
| | - Frédéric Laruelle
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV-UR 4492), Université Littoral Côte d’Opale, SFR Condorcet FR CNRS 3417, CS 80699, 62228 Calais, France
| | - Valérie Bert
- Unité Technologies Propres et Economie Circulaire, INERIS, Parc Technologique Alata, BP2, 60550 Verneuil en Halatte, France
| | - Natacha Facon
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV-UR 4492), Université Littoral Côte d’Opale, SFR Condorcet FR CNRS 3417, CS 80699, 62228 Calais, France
| | - Benoît Tisserant
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV-UR 4492), Université Littoral Côte d’Opale, SFR Condorcet FR CNRS 3417, CS 80699, 62228 Calais, France
| | - Joël Fontaine
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV-UR 4492), Université Littoral Côte d’Opale, SFR Condorcet FR CNRS 3417, CS 80699, 62228 Calais, France
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24
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Li D, Chen J, Zhang X, Shi W, Li J. Structural and functional characteristics of soil microbial communities in response to different ecological risk levels of heavy metals. Front Microbiol 2022; 13:1072389. [PMID: 36569064 PMCID: PMC9772559 DOI: 10.3389/fmicb.2022.1072389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/18/2022] [Indexed: 12/13/2022] Open
Abstract
Objective The potential ecological risk index (RI) is the most commonly used method to assess heavy metals (HMs) contamination in soils. However, studies have focused on the response of soil microorganisms to different concentrations, whereas little is known about the responses of the microbial community structures and functions to HMs at different RI levels. Methods Here, we conducted soil microcosms with low (L), medium (M) and high (H) RI levels, depending on the Pb and Cd concentrations, were conducted. The original soil was used as the control (CK). High-throughput sequencing, qPCR, and Biolog plate approaches were applied to investigate the microbial community structures, abundance, diversity, metabolic capacity, functional genes, and community assembly processes. Result The abundance and alpha diversity indices for the bacteria at different RI levels were significantly lower than those of the CK. Meanwhile, the abundance and ACE index for the fungi increased significantly with RI levels. Acidobacteria, Basidiomycota and Planctomycetes were enriched as the RI level increased. Keystone taxa and co-occurrence pattern analysis showed that rare taxa play a vital role in the stability and function of the microbial community at different RI levels. Network analysis indicates that not only did the complexity and vulnerability of microbial community decrease as risk levels increased, but that the lowest number of keystone taxa was found at the H level. However, the microbial community showed enhanced intraspecific cooperation to adapt to the HMs stress. The Biolog plate data suggested that the average well color development (AWCD) reduced significantly with RI levels in bacteria, whereas the fungal AWCD was dramatically reduced only at the H level. The functional diversity indices and gene abundance for the microorganisms at the H level were significantly lower than those the CK. In addition, microbial community assembly tended to be more stochastic with an increase in RI levels. Conclusion Our results provide new insight into the ecological impacts of HMs on the soil microbiome at different risk levels, and will aid in future risk assessments for Pb and Cd contamination.
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25
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Liu H, Wang F, Liu H, Jing H. Metabolic activity and community structure of prokaryotes associated with particles in the twilight zone of the South China Sea. Front Microbiol 2022; 13:1056860. [PMID: 36560947 PMCID: PMC9763726 DOI: 10.3389/fmicb.2022.1056860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/31/2022] [Indexed: 12/12/2022] Open
Abstract
The twilight zone is an important depth of the ocean where particulate organic matter (POM) remineralization takes place, and prokaryotes contribute to more than 70% of the estimated remineralization. However, little is known about the microbial community and metabolic activity associated with different particles in the twilight zone. The composition and distribution of particle-attached prokaryotes in the twilight zone of the South China Sea (SCS) were investigated using high-throughput sequencing and quantitative PCR, together with the Biolog Ecoplate™ microplates culture to analyze the microbial metabolic activity. We found that α- and γ-Proteobacteria dominating at the lower and upper boundary of the twilight zone, respectively; Methanosarcinales and Halobacteriales of the Euyarchaeota occupied in the larger particles at the upper boundary. Similar microbial community existed between euphotic layer and the upper boundary. Higher amount of shared Operational Taxonomic Units (OTUs) in the larger particles along the water depths, might be due to the fast sinking and major contribution of carbon flux of the larger particles from the euphotic layer. In addition to polymers as the major carbon source, carbohydrates and amino acids were preferentially used by microbial community at the upper and lower boundary, respectively. This could potentially be attributed to the metabolic capabilities of attached microbial groups in different particles, and reflected the initial preference of the carbon source by the natural microbes in the twilight zone as well. The microbial structure and carbon metabolic profiles could be complemented with metatranscriptomic analysis in future studies to augment the understanding of the complex carbon cycling pathways in the twilight zone.
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Affiliation(s)
- Hao Liu
- CAS Key Lab for Experimental Study Under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Fangzhou Wang
- CAS Key Lab for Experimental Study Under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China,University of Chinese Academy of Sciences, Beijing, China
| | - Hongbin Liu
- Department of Ocean Science, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, China,HKUST-CAS Sanya Joint Laboratory of Marine Science Research, Chinese Academy of Sciences, Sanya, China,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China,*Correspondence: Hongbin Liu,
| | - Hongmei Jing
- CAS Key Lab for Experimental Study Under Deep-sea Extreme Conditions, Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China,HKUST-CAS Sanya Joint Laboratory of Marine Science Research, Chinese Academy of Sciences, Sanya, China,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China,Hongmei Jing,
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26
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Wang K, Dou Z, Liu Y, Li X, Lv G, Zhang TA. Summary of research progress on separation and extraction of valuable metals from Bayer red mud. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:89834-89852. [PMID: 36357761 DOI: 10.1007/s11356-022-23837-5] [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: 06/27/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Bayer red mud is a strong alkaline solid waste discharged during alumina production. Due to large emissions and strong alkalinity, red mud is now mostly dammed or buried, which not only occupies huge land but also contaminates the surrounding ecosystem, causing the risk of collapse and landslide. In addition to its overall utilization in building materials, agriculture, the environment, and the chemical industry, red mud also contains valuable metals such as sodium, aluminum, iron, titanium, and scandium and is considered to be an important secondary resource. In this paper, the physicochemical properties and hazards of red mud are first introduced, and then, the overall utilization of red mud is summarized. Then, the latest research progress on the separation and extraction of valuable metals from red mud is reviewed in detail and a new comprehensive utilization method is recommended and evaluated. This paper also provides suggestions for the future development direction of the comprehensive utilization technology of red mud.
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Affiliation(s)
- Kun Wang
- Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
| | - Zhihe Dou
- Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China.
| | - Yan Liu
- Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
| | - Xiaofei Li
- Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
| | - Guozhi Lv
- Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
| | - Ting-An Zhang
- Key Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
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27
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Yan Y, Xie Y, Zhang J, Li R, Ali A, Cai Z, Huang X, Liu L. Effects of Reductive Soil Disinfestation Combined with Liquid-Readily Decomposable Compounds and Solid Plant Residues on the Bacterial Community and Functional Composition. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02139-w. [PMID: 36374338 DOI: 10.1007/s00248-022-02139-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Reductive soil disinfestation (RSD) incorporated with sole plant residues or liquid-readily decomposable compounds is an effective management strategy to improve soil health. However, the synthetic effects of RSD incorporated with liquid-readily decomposable compounds and solid plant residues on soil ecosystem services remain unclear. Field experiments were carried out to investigate the effects of untreated soil (CK), RSD incorporated with sawdust (SA), molasses (MO), and their combinations (SA + MO) on the bacterial community and functional composition. The results showed that RSD treatments significantly altered soil bacterial community structure compared to CK treatment. The bacterial community structure and composition in MO and SA + MO treatments were clustered compared to SA treatment. This was mainly attributed to the readily decomposable carbon sources in molasses having a stronger driving force to reshape the soil microbial community during the RSD process. Furthermore, the functional compositions, such as the disinfestation efficiency of F. oxysporum (96.4 - 99.1%), abundances of nitrogen functional genes, soil metabolic activity, and functional diversity, were significantly increased in all of the RSD treatments. The highest disinfestation efficiency and abundances of denitrification (nirS and nrfA) and nitrogen fixation (nifH) genes were observed in SA + MO treatment. Specifically, SA + MO treatment enriched more abundant beneficial genera, e.g., Oxobacter, Paenibacillus, Cohnella, Rummeliibacillus, and Streptomyces, which were significantly and positively linked to disinfestation efficiency, soil metabolic activity, and denitrification processes. Our results indicated that combining RSD practices with liquid-readily decomposable compounds and solid plant residues could effectively improve soil microbial community and functional composition.
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Affiliation(s)
- Yuanyuan Yan
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Yi Xie
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Jingqing Zhang
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Ruimin Li
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Ahmad Ali
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
| | - Zucong Cai
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing Normal University, Nanjing, 210023, China
| | - Xinqi Huang
- School of Geography, Nanjing Normal University, Nanjing, 210023, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China
- Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing Normal University, Nanjing, 210023, China
| | - Liangliang Liu
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China.
- School of Geography, Nanjing Normal University, Nanjing, 210023, China.
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28
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Mi H, Yi L, Wu Q, Xia J, Zhang B. A review of comprehensive utilization of red mud. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2022; 40:1594-1607. [PMID: 35875958 DOI: 10.1177/0734242x221107987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Red mud (RM) is a solid waste generated during the process of alumina production. RM has already posed a serious environmental threat with the development of the alumina refining industry. The comprehensive utilization of RM has attracted much attention due to its large-scale generation and harmful nature. This paper introduces the characteristics and state of RM and summarizes the relevant research on the comprehensive utilization of RM. The results show that comprehensive utilization of RM is mainly focused on the preparation of building materials, the extraction of valuable metals, catalyst synthesis and environmental protection. Besides, the article discusses the existing problems while utilizing RM. Prospects and suggestions for different utilization methods of RM are proposed.
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Affiliation(s)
- Hongcheng Mi
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Longsheng Yi
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Qian Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Jin Xia
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
| | - Binghang Zhang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China
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29
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Martínez-Gallardo MR, Jurado MM, López-González JA, Toribio A, Suárez-Estrella F, Sáez JA, Moral R, Andreu-Rodríguez FJ, López MJ. Biorecovery of olive mill wastewater sludge from evaporation ponds. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115647. [PMID: 35803069 DOI: 10.1016/j.jenvman.2022.115647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/27/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Olive mill wastewater (OMW) resulting from the olive oil extraction process is usually disposed of in evaporation ponds where it concentrates generating a sludge that pollutes the ponds nearby area. In this study, four bio-treatments were applied for the in-situ bioremediation and valorization of OMW sludge: Landfarming, phytoremediation, composting and vermicomposting. In all cases, the OMW sludge was added with organic residues (mushroom compost, rabbit manure, and chicken manure). The bio-treatments were carried out in duplicate, inoculated and non-inoculated, to determine the effect of a specialized fungal consortium (Aspergillus ochraceus H2 and Scedosporium apiospermum H16) on the efficacy of the bio-treatments. The evaluation of chemical parameters, toxicity, and functional microbial biodiversity revealed that the four techniques depleted the toxicity and favored the stimulation of functional microbiota. Landfarming and phytoremediation allowed the decontamination and improvement of soils. Composting and vermicomposting also offered high-quality products of agronomic interest. Inoculation improved the bioremediation effectiveness. Biological treatments are effective for the safe recovery of contaminated OMW sludge into high-quality services and products.
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Affiliation(s)
- M R Martínez-Gallardo
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence ceiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain.
| | - M M Jurado
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence ceiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - J A López-González
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence ceiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - A Toribio
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence ceiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - F Suárez-Estrella
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence ceiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - J A Sáez
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - R Moral
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - F J Andreu-Rodríguez
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - M J López
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence ceiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
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30
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Abbas Y, Ajmal M, Mustafa MF, Stegmann R, Shao Y, Lu W. Advanced remediation of pyrene contaminated soil by double dielectric barrier discharge (DDBD) plasma and subsequent composting process. CHEMOSPHERE 2022; 303:135255. [PMID: 35688191 DOI: 10.1016/j.chemosphere.2022.135255] [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: 04/09/2022] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Due to increasing industrialization, soils are increasingly contaminated by polycyclic aromatics such as pyrene and need gentle treatment to keep the soil functioning. This study applied a double dielectric barrier discharge (DDBD) plasma reactor and composting reactor to remediate pyrene-contaminated soil. The effect of peak-to-peak applied voltages on the remediation efficiency of pyrene was investigated. The experimental results illustrate that pyrene remediation efficiency increased from 43% to 85% when the peak-to-peak applied voltage was increased from 28.0 to 35.8 kV. When using the combined method of DDBD and composting, 90-99% of pyrene could be removed, while a reduction of 76.5% was achieved using only composting, indicating the superiority of the combined system. Moreover, the authors could demonstrate that DDBD plasma treatment improves humification in the post-composting process as humic acid (HA) concentrations increased to 7.7 mg/g with an applied voltage of 35.8 kV; when composting was used as the sole treatment method, only 3.4 mg/g HA were produced. The microbial activity in the DDBD plasma-treated soil peaked on the 5th day and had a 2nd rise afterwards. The authors demonstrate that the combined technology of DDBD plasma and composting is a promising method for soil remediation with persistent organic pollutants. This treatment approach improves pollutant degradation efficiency and facilitates further humification, potentially restoring the function of contaminated soil. This approach could be considered a cost-effective and green strategy for soil remediation with persistent organic pollutants.
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Affiliation(s)
- Yawar Abbas
- School of Environment, Tsinghua University, Beijing, 100084, China; Department of Environmental Science, Karakoram International University, Gilgit, Pakistan
| | - Muhammad Ajmal
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Muhammad Farooq Mustafa
- Department of Environmental Design, Health & Nutritional Sciences, Allama Iqbal Open University, Islamabad, Pakistan
| | - Rainer Stegmann
- Institute of Environmental Technology and Energy Economics, Hamburg University of Technology, Hamburg, Germany
| | - Yuchao Shao
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing, 100084, China.
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Urbaniak M, Baran A, Mierzejewska E, Kannan K. The evaluation of Hudson River sediment as a growth substrate - Microbial activity, PCB-degradation potential and risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155561. [PMID: 35513141 DOI: 10.1016/j.scitotenv.2022.155561] [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: 02/24/2022] [Revised: 04/23/2022] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
The potential use of growth substrates prepared with an admixture of 10% to 75% Hudson River sediments was evaluated by analysis of changes in microbial activity (measured using Biolog Ecoplates) and molecular markers (presence of degradative tceA1 and bphA genes) as well as potential risks toward humans and the environment (health and environmental risk quotients). The highest microbial activity was found in growth substrate with 25% Hudson River sediments compared to unamended control soil. Significant differences were observed between samples amended with lower (0-10%) and higher (25-75%) proportion of sediment. Microbial activity increased with the proportion of sediment amendment (≥25% sediment); however, this increase in microbial activity was not affected by increasing pollutant concentrations (PCBs, Pb, Cr Ni and Zn) nor decreasing TOC content. The growth substrate amended with Hudson River sediments demonstrated a potential for PCB degradation, as evidenced by the presence of tceA1 and bphA genes responsible, respectively, for reductive dehalogenation and oxidation of a range of aromatic organic compounds including PCBs. An assessment of risk quotients showed that the growth substrates containing lower doses of Hudson River sediments (10-50%) meet the international requirements for use in agriculture/horticulture for the production of non-food crops. Nevertheless, due to the elevated content of some toxic metals and PCBs, the growth substrate prepared with the highest proportion of sediments (75%) was not suitable for agricultural/horticultural use.
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Affiliation(s)
- Magdalena Urbaniak
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland; Department of Pediatrics and Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, USA.
| | - Agnieszka Baran
- University of Agriculture in Krakow, Faculty of Agriculture and Economics, Department of Agricultural and Environmental Chemistry, Al. Mickiewicza 21, 31-120 Krakow, Poland
| | - Elżbieta Mierzejewska
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
| | - Kurunthachalam Kannan
- Department of Pediatrics and Department of Environmental Medicine, New York University School of Medicine, New York, NY 10016, USA
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Leite RDC, Lucheta AR, Holanda RB, Silva PMP, Carmo ALVD, Leite RDC, Melo CCAD, Costa RVD, Montini M, Fernandes AR. Bauxite residue valorization - Soil conditioners production through composting with palm oil mill residual biomass. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155413. [PMID: 35472350 DOI: 10.1016/j.scitotenv.2022.155413] [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: 01/13/2022] [Revised: 04/14/2022] [Accepted: 04/17/2022] [Indexed: 06/14/2023]
Abstract
Bauxite residue (BR) is a by-product of Bayer process, which is applied for alumina production. Due to its inherent alkalinity and sodicity, the use of BR is globally limited to 23% of the 150 million tons (Mt) produced annually. Maximizing alternative and large-scale uses of BR is a game changer to promote the sustainability of the aluminum production chain. As a strategy for BR valorization, a soil conditioner composed of BR and palm oil residual biomass was proposed. Here we evaluate the BR (25%, 50% and 75%) batch composting with raw palm oil mill waste (POMW) and palm oil compost (POC). The pH, EC, total N and organic carbon, C:N ratio, water holding capacity (WHC), cation exchange capacity (CEC), granulometry and elemental composition were determined after 90 days of composting. Changes in temperature, pH and EC curves were observed during composting of soil conditioners for 90 days. Composting reduced the alkalinity and sodicity of BR, increasing CEC, moisture, organic carbon and total nitrogen. The formulation containing 25% of BR and 75% of POC showed WHC ≥ 60% and CEC ≥ 200 mmolc·kg-1, meeting the Brazilian legislation for production and commercialization of soil conditioners. This strategy could potentially consume 7.6% of all BR produced annually in the largest Brazilian alumina refinery. Concentrations of potentially toxic elements were far below the allowable levels in all formulations. Major and minor plant nutrients were present and the composting aggregated small particles in BR. Composting of BR is a new alternative for the valorization of mining tailings, allowing the development of an environmentally friendly and zero-waste product, which can be applied on a large scale in agriculture to improve soil fertility.
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Affiliation(s)
- Robson da Costa Leite
- SENAI Innovation Institute for Mineral Technologies, Belém, Pará 66035-080, Brazil; Institute of Agricultural Sciences, Federal Rural University of the Amazon, 66077-830 Belém, Pará, Brazil.
| | - Adriano Reis Lucheta
- SENAI Innovation Institute for Mineral Technologies, Belém, Pará 66035-080, Brazil.
| | | | | | | | - Rubson da Costa Leite
- Institute of Agricultural Sciences, Federal Rural University of the Amazon, 66077-830 Belém, Pará, Brazil.
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Xu ZM, Zhang YX, Wang L, Liu CG, Sun WM, Wang YF, Long SX, He XT, Lin Z, Liang JL, Zhang JX. Rhizobacteria communities reshaped by red mud based passivators is vital for reducing soil Cd accumulation in edible amaranth. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 826:154002. [PMID: 35231517 DOI: 10.1016/j.scitotenv.2022.154002] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/08/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Red mud (RM) was constantly reported to immobilize soil cadmium (Cd) and reduce Cd uptake by crops, but few studies investigated whether and how RM influenced rhizobacteria communities, which was a vital factor determining Cd bioavailability and plant growth. To address this concern, high-throughput sequencing and bioinformatics were used to analyze microbiological mechanisms underlying RM application reducing Cd accumulation in edible amaranth. Based on multiple statistical models (Detrended correspondence analysis, Bray-Curtis, weighted UniFrac, and Phylogenetic tree), this study found that RM reduced Cd content in plants not only through increasing rhizosphere soil pH, but by reshaping rhizobacteria communities. Special taxa (Alphaproteobacteria, Gammaproteobacteria, Actinobacteriota, and Gemmatimonadota) associated with growth promotion, anti-disease ability, and Cd resistance of plants preferentially colonized in the rhizosphere. Moreover, RM distinctly facilitated soil microbes' proliferation and microbial biofilm formation by up-regulating intracellular organic metabolism pathways and down-regulating cell motility metabolic pathways, and these microbial metabolites/microbial biofilm (e.g., organic acid, carbohydrates, proteins, S2-, and PO43-) and microbial cells immobilized rhizosphere soil Cd via the biosorption and chemical chelation. This study revealed an important role of reshaped rhizobacteria communities acting in reducing Cd content in plants after RM application.
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Affiliation(s)
- Zhi-Min Xu
- Engineering and Technology Research Center for Agricultural Land Pollution Prevention and Control of Guangdong Higher Education Institutes, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China; Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
| | - Yu-Xue Zhang
- Engineering and Technology Research Center for Agricultural Land Pollution Prevention and Control of Guangdong Higher Education Institutes, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Lei Wang
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China
| | - Chun-Guang Liu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China
| | - Wei-Min Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; School of Environment, Henan Normal University, Xinxiang 453007, China
| | - Yi-Fan Wang
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Sheng-Xing Long
- College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xiao-Tong He
- Engineering and Technology Research Center for Agricultural Land Pollution Prevention and Control of Guangdong Higher Education Institutes, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Zheng Lin
- Engineering and Technology Research Center for Agricultural Land Pollution Prevention and Control of Guangdong Higher Education Institutes, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Jia-Lin Liang
- Engineering and Technology Research Center for Agricultural Land Pollution Prevention and Control of Guangdong Higher Education Institutes, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Jie-Xiang Zhang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
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Effects of dietary supplementation with tropical microfungi Mucor circinelloides and Trichoderma harzianum powder on growth performance, bacterial communities, and the biomass nutritional profile of white shrimp grow-out culture (Litopenaeus vannamei). AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2022.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Liu H, Chen Y, Zhang Y, Zhao W, Guo H, Wang S, Xia W, Wang S, Liu R, Yang C. Enhanced production of polyhydroxyalkanoates in Pseudomonas putida KT2440 by a combination of genome streamlining and promoter engineering. Int J Biol Macromol 2022; 209:117-124. [PMID: 35395277 DOI: 10.1016/j.ijbiomac.2022.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/19/2022] [Accepted: 04/02/2022] [Indexed: 11/05/2022]
Abstract
Polyhydroxyalkanoates (PHAs), a class of bioplastics produced by a variety of microorganisms, have become the ideal alternatives for oil-derived plastics due to their superior physicochemical and material characteristics. Pseudomonas putida KT2440 can produce medium-chain-length PHA (mcl-PHA) from various substrates. In this study, a novel strategy of the large-scale deletion of genomic islands (GIs) coupling with promoter engineering was developed in P. putida KT2440 for constructing the minimal genome cell factories (MGF) capable of efficiently producing mcl-PHA. Firstly, P. putida KTU-U13, a 13 GIs- and upp-deleted mutant derived from the parental strain P. putida KT2440, was used as a starting strain for further deletion of GIs to generate a series of genome-reduced strains. Subsequently, the two minimal genome strains KTU-U24 and KTU-U27, which had a 7.19% and 8.35% reduction relative to the genome size of KT2440 and were advantageous over the strain KTU (KT2440∆upp) and KTU-U13 in several physiological traits such as the maximum specific growth rate, plasmid transformation efficiency, heterologous protein expression capacity and PHA production capacity, were selected as the chassis cells for PHA metabolic engineering. To prevent the formation of the by-product gluconic acid, the glucose dehydrogenase gene was deleted in KTU-U24 and KTU-U27, resulting in KTU-U24∆gcd and KTU-U27∆gcd. To enhance the transcriptional level of PHA synthase genes (phaC) and the supply of the precursor acetyl-CoA, a strong endogenous promoter P46 was inserted into upstream of the phaC operon and pyruvate dehydrogenase gene in the genome of KTU-U24∆gcd and KTU-U27∆gcd, to generate KTU-U24∆gcd-P46CA and KTU-U27∆gcd-P46CA, with the PHA yield of 50.5 wt% and 53.8 wt% (weight percent of PHA in cell dry weight). Finally, KTU-U27∆gcd-P46CA, the most minimal KT2440 chassis currently available, was able to accumulate the PHA to 55.82 wt% in a 5-l fermentor, which is the highest PHA yield obtained with P. putida KT2440 so far. This study suggests that genome streamlining in combination with promoter engineering may be a feasible strategy for the development of the MGF for the efficient production of high value products. Moreover, further streamlining of the P. putida KT2440 genome has great potential to create the optimal chassis for synthetic biology applications.
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Affiliation(s)
- Honglu Liu
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Yaping Chen
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Yiting Zhang
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Wanwan Zhao
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Hongfu Guo
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Siqi Wang
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Wenjie Xia
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Shufang Wang
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Ruihua Liu
- Tianjin Key Laboratory of Protein Science, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Chao Yang
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China.
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Dong M, Hu S, Lv S, Rong F, Wang X, Gao X, Xu Z, Xu Y, Liu K, Liu A. Recovery of microbial community in strongly alkaline bauxite residues after amending biomass residue. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 232:113281. [PMID: 35124422 DOI: 10.1016/j.ecoenv.2022.113281] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
The aim of this study was to characterize the effects of cornstalk biomass amendments on microbial communities in bauxite residues (BRs) by phylogenetic analysis. Improvements in soil geochemical, physical, and biological properties were assessed to identify the major factors controlling microbial community development in BRs. After one year of incubation, the salinity and structure of the amended BRs had gradually improved, with pH dropping from 11.39 to 9.89, the exchangeable sodium percentage (ESP) dropping from 86.3% to 35.2%, and the mean weight diameter (MWD) rising from 0.12 mm to 0.38 mm. Further analysis of community level physiological profiles (CLPP) showed that the microbial utilization of different carbohydrates had shifted significantly, in addition to increases in the diversity index H' (0.7-7.34), U (2.16-3.14), and the average well color development (0.059-1.08). Over the one-year outside incubation, the dominant fungal phyla in the BRs had shifted gradually from Ascomycota (85.64%) to Ascomycota (52.07%) and Basidiomycota (35.53%), while the dominant bacterial phyla had shifted from Actinobacteria (38.47%), Proteobacteria (21.39%), and Gemmatimonadetes (12.72%) to Actinobacteria (14.87%), Proteobacteria (23.53%), and Acidobacteria (14.37%). Despite these shifts, microbial diversity remained lower in the amended BRs than in the natural soil. Further redundancy analysis indicated that pH was the major factor driving shifts in the bacterial community, while aggregates were the major factor driving shifts in the fungal community. This study demonstrated that amendment with cornstalk biomass shifted the microbial community in the BRs from halophilic groups to acidogenic groups by improving the soil environmental conditions.
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Affiliation(s)
- Mengyang Dong
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Shuxiang Hu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Shiquan Lv
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Fangxu Rong
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Xin Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Xinyu Gao
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
| | - Ziwen Xu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Yuzhi Xu
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
| | - Kai Liu
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
| | - Aiju Liu
- School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China.
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Koner S, Chen JS, Hsu BM, Rathod J, Huang SW, Chien HY, Hussain B, Chan MWY. Depth-resolved microbial diversity and functional profiles of trichloroethylene-contaminated soils for Biolog EcoPlate-based biostimulation strategy. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127266. [PMID: 34600373 DOI: 10.1016/j.jhazmat.2021.127266] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
This study explores the toxic effect of TCE at different depths of sub-surface soil and underpins microbial community-level suitable carbon (C)-sources that provided directionality to the in situ biostimulation effort via augmentation strategy for effective TCE remediation in soil. The impacts on resident microbial communities and their functional profiles that govern the TCE biodegradation process were identified. Highly contaminated PW01 soil (9 m depth) had severely limited microbial diversity and was enriched in Proteobacteria and Firmicutes. The abundance of TCE degradation-associated genera was observed in all contaminated samples, and the abundance of TCE-degradation-related taxa were positively correlated with soil TCE contamination levels. Community-level metabolic activity associated with the utilization of diverse external C-sources was directly influenced by TCE concentration and soil depth. Multivariate data analysis revealed that the functional genus, TCE concentration, and selected available C substrate uptake capacity correlated in soil samples. Pearson's correlation tests revealed that C sources such as L-arginine, phenylethylamine and γ-hydroxybutyric acid utilization trait exhibited significant positive correlations with chloroalkane and chloroalkene degradation pathway abundance. Ultimately, depth and TCE contamination level-associated soil microbiota and their most preferred C-source understanding could add to facilitate effective biostimulation via external nutrient amendment for efficient in situ TCE degradation.
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Affiliation(s)
- Suprokash Koner
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan; Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan
| | - Jung-Sheng Chen
- Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan
| | - Bing-Mu Hsu
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan.
| | - Jagat Rathod
- Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Wei Huang
- Center for environmental Toxin and Emerging Contaminant Research, Cheng Shiu University, Kaohsiung, Taiwan; Super Micro Research and Technology Center, Cheng Shiu University, Kaohsiung, Taiwan
| | - Hua-Yi Chien
- Environmental Technology Development Department, Taiwan VCM Corporation, Kaohsiung, Taiwan; Department of Environmental Sciences and Engineering, Fooyin University, Kaohsiung, Taiwan
| | - Bashir Hussain
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan; Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan
| | - Michael W Y Chan
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan
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Zhao Y, Zhang Y, Zhao Z, Ma X, Cai Y. Solidification performances of contaminants by red mud-based cementitious paste filling material and leaching behavior of contaminants in different pH and redox potential environments. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:731-745. [PMID: 35166696 DOI: 10.2166/wst.2022.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Considering the urgent need for disposal of red mud and the comprehensive treatment of coal mined-out areas, this paper presented red mud-based cementitious paste filling material (RMFM) to achieve the purpose of green filling treatment. However, the solidification performance of alkaline RMFM for contaminants can be affected when in contact with acid goaf water in practice, which may in turn cause secondary pollution to the surroundings. The leaching tests of RMFM under different pH and redox potential (Eh) conditions were designed to investigate the effects of environmental elements on the solidification performance of RMFM, and primarily investigated the treatment effectiveness of RMFM on goaf water. The test results manifest that the acidic and oxidizing environments could damage the hydration products generated by alkali and sulfate activation, thus affecting the solidification performance, while the alkaline and reducing environments could effectively prevent the release of the contaminants by enhancing the degree of alkali activation and inhibiting oxidation acid forming process. In the possible exposure environment, RMFM could effectively stabilize its own pollutants without secondary pollution. In addition, the powder RMFM samples had significant removal effects on heavy metals, the values of Cu, Pb, and As removal efficiency all reached more than 96.15%.
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Affiliation(s)
- Yue Zhao
- School of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China E-mail:
| | - Yun Zhang
- Shanxi YunQuan Geotechnical Engineering Technology Co. Ltd, Yangquan 045000, China
| | - Zhihuai Zhao
- School of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China E-mail:
| | - Xuefeng Ma
- School of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China E-mail:
| | - Yun Cai
- School of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China E-mail:
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Liu Z, Wei H, Zhang J, Wang T, He Y, Zhong J, Ma R. Increasing acid rain frequency promotes the microbial community dissimilarities of forest soil rather than agricultural soil in southern China. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 230:113123. [PMID: 34973605 DOI: 10.1016/j.ecoenv.2021.113123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Soil microbial community drives the terrestrial carbon (C) cycling by C sources metabolism (i.e., organic C decomposition), however, the microbial response to changing acid rain frequency remains less studied, thus hampering global warming projection. Here, we manipulated a simulated experiment to decipher the impact of acid rain frequency (0, 30%, and 100%) on microbial community and C sources metabolism in the agricultural and forest soils of southern China, based on the phospholipid fatty acids (PLFAs) analysis and BIOLOG method, respectively. We found that changing acid rain frequency did not affect the microbial biomass and community structure of agricultural soil during the whole experiment period, while the 30% and 100% acid rain frequencies significantly decreased the microbial biomass, and altered the microbial community structure of forest soil at the early stage. However, changing acid rain frequency did not influence the microbial C sources metabolism in the agricultural soil, but 30% acid rain frequency significantly reduced the microbial utilization of carboxylic acids in the forest soil. Moreover, increasing acid rain frequency promoted the microbial community dissimilarities of forest soil. The microbial community structure and C sources utilization of agricultural soil were significantly related to soil available phosphorus content, while that of forest soil correlated with the soil available potassium content and temperature. Changes in soil environmental condition, soil acidification parameters and soil nutrients explained most of the variance of microbial community and C sources utilization (81% and 57%, respectively) in the forest soil, whereas great uncertainties of microbial community and C sources utilization existed in the agricultural soil with the explanatory proportion being 20% and 10%, respectively. Our findings suggest that the microbial community of forest soil is more sensitive to changing acid rain frequency than that of agricultural soil in a short term. These results support the prediction of microbes-driven C cycling dynamics in specific soil ecosystems in the context of changing acid rain frequency.
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Affiliation(s)
- Ziqiang Liu
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Hui Wei
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China.
| | - Jiaen Zhang
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China.
| | - Ting Wang
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yanan He
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Jiawen Zhong
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Rui Ma
- Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
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Borgulat J, Łukasik W, Borgulat A, Nadgórska-Socha A, Kandziora-Ciupa M. Influence of lead on the activity of soil microorganisms in two Beskidy landscape parks. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:839. [PMID: 34820719 PMCID: PMC8613082 DOI: 10.1007/s10661-021-09503-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
The aim of the study was to assess the potential impact of lead on soil metabolism in two landscape parks localized in the Beskid Śląski and Beskid Żywiecki mountains which were affected, among others, by air pollution from the Upper Silesian Industrial Region, the largest industrial zone in Poland. The study was carried out in six locations with different lead levels in the soil environment. Each plot was equipped with four pairs of vacuum ceramic lysimeters to assess the mobility of Pb in the soil. The metabolic activity was assessed by measuring: soil enzyme activity, soil respiration and by studying community-level physiological profiling (CLPP) using Biolog EcoPlates technique. The soil to the examination was collected near the stands with the lysimeters from two soil horizons (A and B layer). The analyses carried out showed that the factors that had the greatest influence on lead mobility were the organic carbon content and the soil pH. The elevated lead level in the topsoil (layer A) could affect the functional biodiversity of soil microorganisms, but low soil pH was a more likely limiting factor. In the subsoil (layer B), lower lead content was found and its probable effect on soil microbial activity was small. In summary, it can be concluded that the assessment of the influence of heavy metals on soil metabolism is not easy, and the Biolog system has proven to be a sensitive tool for assessing the potential impact of heavy metals on the soil environment.
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Affiliation(s)
- Jacek Borgulat
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844, Katowice, Poland.
| | - Włodzimierz Łukasik
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844, Katowice, Poland
| | - Anna Borgulat
- Department of Water Protection, Central Mining Institute, pl. Gwarków 1, 40-166, Katowice, Poland
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Effect of Commercial Amendments on Immobilization of Arsenic, Copper, and Zinc in Contaminated Soil: Comprehensive Assessing to Plant Uptake Combined with a Microbial Community Approach. MINERALS 2021. [DOI: 10.3390/min11101143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Identifying the proper chemical and biological materials as soil amendments is a great concern because they replace soil properties and subsequently change the soil quality. Hence, this study was conducted to evaluate the effects of a diverse range of soil amendments including bentonite (B), talc (T), activated carbon (AC), and cornstarch (CS) in form of sole and composite on the immobilization and bioavailability of As, Cu, and Zn. The amendments were characterized by SEM, FT-IR, and XRF, and applied at 2% (w/w) in the experimental pots with an Asteraceae (i.e., lettuce) for 45 days to monitor plant growth parameters and soil microbial community. Soil pH from 6.1 ± 0.02 significantly increased in the amended soils with the maximum value found for TAC (7.4 ± 0.04). The results showed that soil amendments reduced easily in an exchangeable fractionation of As, Cu, and Zn with the maximum values found for BAC by 66.4%, AC by 84.2%, and T by 89.7% respectively. Adding B, T, AC, and their composites induced dry biomass of lettuce >40 wt.%, while CS and its composites did not affect the dry biomass of the plant. The average content of Cu and Zn in plant tissues decreased >45 wt.% in B, AC, and their composites amended soils; meanwhile, AC and its composites mitigated As uptake by >30 wt.% in lettuce. The results of Biolog Ecoplate showed that the amending soils improved the microbial community, especially for composites (e.g., TCS). The results demonstrated that adding composites amendments provided an efficient method for the immobilization of metals and metalloids, and also induced plant growth parameters and microbial community.
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Cao W, Zhu R, Gong J, Yang T, Zeng G, Song B, Li J, Fang S, Qin M, Qin L, Chen Z, Mao X. Evaluating the metabolic functional profiles of the microbial community and alfalfa (Medicago sativa) traits affected by the presence of carbon nanotubes and antimony in drained and waterlogged sediments. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126593. [PMID: 34271448 DOI: 10.1016/j.jhazmat.2021.126593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 06/13/2023]
Abstract
Antimony (Sb) is the ubiquitous re-emerging contaminant greatly accumulated in sediments which has been revealed risky to ecological environment. However, the impacts of Sb (III/V) on microbes and plants in sediments, under different water management with presence of engineering materials are poorly understood. This study conducted sequential incubation of sediments (flooding, draining and planting) with presence of multiwall carbon nanotubes (MWCNTs) and Sb to explore the influence on microbial functional diversity, Sb accumulation and alfalfa traits. Results showed that water management and planting led to greater impacts of sediment enzyme activities and microbial community metabolic function and bioavailable Sb fractions (defined as sum of acid-soluble fraction and reducible fraction, F1 + F2). Available fractions of Sb (V) showed higher correlation to microbial metabolism (r = 0.933) than that of Sb (III) (r = -0.480) in planting stage. MWCNTs with increasing concentrations (0.011%, w/w) positively correlated to microbial community metabolic function in planting stage whereas resulted in decreasing of Sb (III/V) concentrations in alfalfa, although 0.01% MWCNT led to increase of Sb (V) and decrease of Sb (V) by 50.97% and 32.68% respectively. This study provided information for investigating combined ecological impacts of heavy metal and engineering materials under different water managing sediments.
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Affiliation(s)
- Weicheng Cao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Rilong Zhu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
| | - Jilai Gong
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants, Changsha 410082, PR China.
| | - TingYu Yang
- School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu Province, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Biao Song
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Juan Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Siyuan Fang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Meng Qin
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Lei Qin
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Zengping Chen
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Xiaoqian Mao
- Hunan Ecological and Environmental Affairs Center, Changsha 410082, PR China
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Effect of Municipal Solid Waste Compost on Antimony Mobility, Phytotoxicity and Bioavailability in Polluted Soils. SOIL SYSTEMS 2021. [DOI: 10.3390/soilsystems5040060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The effect of a municipal solid waste compost (MSWC), added at 1 and 2% rates, on the mobility, phytotoxicity, and bioavailability of antimony (Sb) was investigated in two soils (SA: acidic soil; SB: alkaline soil), spiked with two Sb concentrations (100 and 1000 mg kg−1). The impact of MSWC on microbial activity and biochemical functioning within the Sb-polluted soils was also considered. MSWC addition reduced water-soluble Sb and favored an increase in residual Sb (e.g., by 1.45- and 1.14-fold in SA-100 and SA-1000 treated with 2% MSWC, respectively). Significant increases in dehydrogenase activity were recorded in both the amended soils, as well as a clear positive effect of MSWC on the metabolic activity and catabolic diversity of respective microbial communities. MSWC alleviated Sb phytotoxicity in triticale plants and decreased Sb uptake by roots. However, increased Sb translocation from roots to shoots was recorded in the amended soils, according to the compost rate. Overall, the results obtained indicated that MSWC, particularly at a 2% rate, can be used for the recovery of Sb-polluted soils. It also emerged that using MSWC in combination with triticale plants can be an option for the remediation of Sb-polluted soils, by means of assisted phytoextraction.
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Koner S, Chen JS, Hsu BM, Tan CW, Fan CW, Chen TH, Hussain B, Nagarajan V. Assessment of Carbon Substrate Catabolism Pattern and Functional Metabolic Pathway for Microbiota of Limestone Caves. Microorganisms 2021; 9:microorganisms9081789. [PMID: 34442868 PMCID: PMC8398112 DOI: 10.3390/microorganisms9081789] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 11/26/2022] Open
Abstract
Carbon utilization of bacterial communities is a key factor of the biomineralization process in limestone-rich curst areas. An efficient carbon catabolism of the microbial community is associated with the availability of carbon sources in such an ecological niche. As cave environments promote oligotrophic (carbon source stress) situations, the present study investigated the variations of different carbon substrate utilization patterns of soil and rock microbial communities between outside and inside cave environments in limestone-rich crust topography by Biolog EcoPlate™ assay and categorized their taxonomical structure and predicted functional metabolic pathways based on 16S rRNA amplicon sequencing. Community level physiological profiling (CLPP) analysis by Biolog EcoPlate™ assay revealed that microbes from outside of the cave were metabolically active and had higher carbon source utilization rate than the microbial community inside the cave. 16S rRNA amplicon sequence analysis demonstrated, among eight predominant bacterial phylum Planctomycetes, Proteobacteria, Cyanobacteria, and Nitrospirae were predominantly associated with outside-cave samples, whereas Acidobacteria, Actinobacteria, Chloroflexi, and Gemmatimonadetes were associated with inside-cave samples. Functional prediction showed bacterial communities both inside and outside of the cave were functionally involved in the metabolism of carbohydrates, amino acids, lipids, xenobiotic compounds, energy metabolism, and environmental information processing. However, the amino acid and carbohydrate metabolic pathways were predominantly linked to the outside-cave samples, while xenobiotic compounds, lipids, other amino acids, and energy metabolism were associated with inside-cave samples. Overall, a positive correlation was observed between Biolog EcoPlate™ assay carbon utilization and the abundance of functional metabolic pathways in this study.
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Affiliation(s)
- Suprokash Koner
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (S.K.); (B.H.)
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (C.-W.F.); (V.N.)
| | - Jung-Sheng Chen
- Department of Medical Research, E-Da Hospital, Kaohsiung 824, Taiwan;
| | - Bing-Mu Hsu
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (C.-W.F.); (V.N.)
- Center for Innovative on Aging Society (CIRAS), National Chung Cheng University, Chiayi City 621, Taiwan
- Correspondence: ; Tel.: +886-5272-0411 (ext. 66218)
| | - Chao-Wen Tan
- Division of Cardiology, Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi City 600, Taiwan;
| | - Cheng-Wei Fan
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (C.-W.F.); (V.N.)
| | - Tsung-Hsien Chen
- Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi City 600, Taiwan;
| | - Bashir Hussain
- Department of Biomedical Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (S.K.); (B.H.)
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (C.-W.F.); (V.N.)
| | - Viji Nagarajan
- Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi City 621, Taiwan; (C.-W.F.); (V.N.)
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Fan D, Sun J, Liu C, Wang S, Han J, Agathokleous E, Zhu Y. Measurement and modeling of hormesis in soil bacteria and fungi under single and combined treatments of Cd and Pb. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:147494. [PMID: 34088122 DOI: 10.1016/j.scitotenv.2021.147494] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
Heavy metals are considered major environmental pollutants. Soil microorganisms represent a predominant component of soils ecosystems, yet there is little information regarding hormetic responses of soil microorganisms to single and combined exposures to heavy metals. In the present study, to explore and predict the hormetic response of soil microorganisms, dose-response relationships of bacterial and fungal populations to single and combined treatments of cadmium (Cd) and lead (Pb) were evaluated. The results revealed hormetic responses of bacterial and fungal populations to both single and combined Cd and Pb treatments. The maximum stimulation (Mmax; relative to control treatment with no metals) of bacterial and fungal populations was 40% at 2 mg Cd/kg and 60% at 160 mg Pb/kg. An enhanced Mmax occurred in bacterial (50%) and fungal (75%) populations in the presence of the binary mixtures of 0.6 mg Cd/kg + 160 mg Pb/kg and 4.0 mg Cd/kg + 200 mg Pb/kg, suggesting positive additivity. This study showed that the hormetic effects of the mixtures were related to the independent effect of Cd and Pb, but they could not be predicted by the single effect of Cd or Pb. These new findings of the hormetic response of soil microorganisms to single treatments of Cd and Pb and their binary mixtures can facilitate the determination and minimization of ecological risks in heavy metal-polluted soils.
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Affiliation(s)
- Diwu Fan
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jinwei Sun
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Chenglei Liu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Shengyan Wang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jiangang Han
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Evgenios Agathokleous
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology (NUIST), Nanjing, Jiangsu 210044, China
| | - Yongli Zhu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
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46
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Németh I, Molnár S, Vaszita E, Molnár M. The Biolog EcoPlate™ Technique for Assessing the Effect of Metal Oxide Nanoparticles on Freshwater Microbial Communities. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1777. [PMID: 34361164 PMCID: PMC8308119 DOI: 10.3390/nano11071777] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022]
Abstract
The application of Biolog EcoPlate™ for community-level physiological profiling of soils is well documented; however, the functional diversity of aquatic bacterial communities has been hardly studied. The objective of this study was to investigate the applicability of the Biolog EcoPlate™ technique and evaluate comparatively the applied endpoints, for the characterisation of the effects of metal oxide nanoparticles (MONPs) on freshwater microbial communities. Microcosm experiments were run to assess the effect of nano ZnO and nano TiO2 in freshwater at 0.8-100 mg/L concentration range. The average well colour development, substrate average well colour development, substrate richness, Shannon index and evenness, Simpson index, McIntosh index and Gini coefficient were determined to quantify the metabolic capabilities and functional diversity. Comprehensive analysis of the experimental data demonstrated that short-term exposure to TiO2 and ZnO NPs affected the metabolic activity at different extent and through different mechanisms of action. TiO2 NPs displayed lower impact on the metabolic profile showing up to 30% inhibition. However, the inhibitory effect of ZnO NPs reached 99% with clearly concentration-dependent responses. This study demonstrated that the McIntosh and Gini coefficients were well applicable and sensitive diversity indices. The parallel use of general metabolic capabilities and functional diversity indices may improve the output information of the ecological studies on microbial communities.
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Affiliation(s)
| | | | | | - Mónika Molnár
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary; (I.N.); (S.M.); (E.V.)
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Berta KM, Kurdi R, Lukács P, Penk M, Somogyi V. Red mud with other waste materials as artificial soil substitute and its effect on Sinapis alba. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 287:112311. [PMID: 33752048 DOI: 10.1016/j.jenvman.2021.112311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 02/17/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Despite efforts to utilise bauxite residue, the amount of red mud stored in reservoirs is increasing. This paper aims to evaluate the potential of red mud and other sludge waste types as a soil substitute by monitoring plant development. Pot experiments were carried out testing two types of mixtures: dredging sludge from Lake Balaton mixed with garden soil and the sewage sludge and soil blend. These were then treated with red mud (15 and 30% w/w). The plants were under-, while the roots were more developed in the sewage sludge mix than the dredging sludge blend and the control soil. In the sewage amendment, the phosphorous content increased while the calcium content was lower than in the other soil types and the optimum. The metals uptake of the plants was a factor of the red mud quantity. Lead, nickel, titanium and silicon had elevated concentrations parallel to higher red mud content, but only the nickel exceeded the threshold of the Hungarian legislation. Silicon and titanium were beneficial for plant growth, compensating for the potentially toxic effects of lead and nickel. Results suggest that the red mud in a mixture with either sewage sludge or dredging sludge can act as catalysts for the growth rate of test plants, allowing their utilisation as secondary raw materials.
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Affiliation(s)
- Kinga M Berta
- University of Pannonia, Sustainable Solutions Research Laboratory, Veszprém, Hungary.
| | - Róbert Kurdi
- University of Pannonia, Sustainable Solutions Research Laboratory, Veszprém, Hungary.
| | - Pál Lukács
- University of Pannonia, Centre of Competence for Sustainability and Circular Economy, Veszprém, Hungary.
| | | | - Viola Somogyi
- University of Pannonia, Sustainable Solutions Research Laboratory, Veszprém, Hungary.
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Wang M, Liu X. Applications of red mud as an environmental remediation material: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124420. [PMID: 33191032 DOI: 10.1016/j.jhazmat.2020.124420] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
Red mud is an alkaline by-product produced by alumina plants. The accumulation of red mud is becoming an increasingly serious problem with the growth of the aluminum industry. Various waste treatment methods utilizing red mud as an environmental remediation material have been developed. Red mud environmental remediation materials (RM-ERMs) are environmental remediation materials prepared by activating red mud, synergistically using red mud and other ingredients, or by extracting effective components from red mud. There are three general categories of use for RM-ERMs: for waste water purification, waste gas purification and soil remediation. As well as providing an opportunity to improve the environment through purification technologies, the highly alkaline red mud is consumed in the production of RM-ERMs. The use of RM-ERMs has been shown to be a promising strategy for the simultaneous treatment of various wastes. In this paper, the developregeneration characteristics of various red mud granularent status of RM-ERMs is described, the physical and chemical properties of red mud are introduced, and the active mechanism of RM-ERMs on target pollutants in waste water, waste gas and soil is summarized. Moreover, a discussion on the current existing problems of RM-ERMs provides important tips and suggestions for future research on RM-ERMs.
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Affiliation(s)
- Mengfan Wang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiaoming Liu
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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Chen Y, Wang W, Zhou D, Cai B, Zhang M, Qi D, Jing T, Zang X, Zhang L, Xie J. Acetobacter orientalis XJC-C with a high lignocellulosic biomass-degrading ability improves significantly composting efficiency of banana residues by increasing metabolic activity and functional diversity of bacterial community. BIORESOURCE TECHNOLOGY 2021; 324:124661. [PMID: 33440312 DOI: 10.1016/j.biortech.2020.124661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/30/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Banana residues are an important energy resource after fruit harvesting. The optionally dumping and burning causes severely environmental problems. Traditional compost efficiency was limited by lignocellulosic composition of banana residues. Inoculation with cellulase-producing microbes provides an efficient strategy for improving degradation of lignocellulosic materials. In our study, a newly isolated cellulolytic bacterium Acetobacter orientalis XJC-C with a salt and high temperature resistance was identified from a marine soft coral. By contrast, the strain can biodegrade different lignocellulosic agricultural residues, especially banana straw. The highest cellulolytic and ligninolytic enzyme activities were detected during composting at 40 days. Compared with the negative and positive control groups, the lignin degradation rate reached 76.24% in the A. orientalis XJC-C group, increased by 47.08% and 21.85%, respectively. Moreover, the strain improved significantly the metabolic activity and functional diversity of bacterial community. Hence, A. orientalis XJC-C will be a promising candidate for degrading lignocellulosic agricultural residues.
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Affiliation(s)
- Yufeng Chen
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Wei Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Dengbo Zhou
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Bingyu Cai
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Miaoyi Zhang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Dengfeng Qi
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Tao Jing
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Xiaoping Zang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Lu Zhang
- College of Life Science, Hainan Normal University, Haikou 571158, China
| | - Jianghui Xie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China.
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50
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Martínez-Gallardo MR, López MJ, López-González JA, Jurado MM, Suárez-Estrella F, Pérez-Murcia MD, Sáez JA, Moral R, Moreno J. Microbial communities of the olive mill wastewater sludge stored in evaporation ponds: The resource for sustainable bioremediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111810. [PMID: 33341726 DOI: 10.1016/j.jenvman.2020.111810] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/11/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
Olive Mill Wastewater (OMW) is a polluting residue from the olive oil industry. It is usually stored in open-air unprotected evaporation ponds where their sediments accumulate. This study compares the characteristics of OMW sludges stored for long-time in evaporation ponds and assesses their impact on the underlying soil layer. Physicochemical parameters, toxicity bioassays, and full characterization of the microbial community were analyzed. The extension of the polluting effects was assessed by analysis of toxicity, microbial biomass carbon, and respiration. Geostatistics was used to predict their spatial distribution. Organic matter and polyphenol content besides toxicity levels determine variations between OMW sludges and have a high impact on the microbiota they contain. The microbial community was abundant, diverse, and functionally active. However, the biodegradability of the sludges was hindered by the toxicity levels. Toxicity and biomass carbon were higher on the surface of the ponds than in the soil layer revealing a reduced leach flow and depletion of contaminants. The natural microbiota might be biostimulated by means of applying sustainable and feasible biological treatments in order to favor the OMW sludges bioremediation. These results open up the possibility of solving the environmental concern caused by its storage in similar scenarios, which are common in olive oil-producing countries.
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Affiliation(s)
- María R Martínez-Gallardo
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - María J López
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain.
| | - Juan A López-González
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - Macarena M Jurado
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - Francisca Suárez-Estrella
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - María D Pérez-Murcia
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - José A Sáez
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - Raúl Moral
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - Joaquín Moreno
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
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