224,547 results match your criteria soils


Altered albedo dominates the radiative forcing changes in a subtropical forest following an extreme snow event.

Glob Chang Biol 2021 Sep 15. Epub 2021 Sep 15.

Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, 411008, India.

Subtropical forests are important ecosystems globally due to their extensive role in carbon sequestration. Extreme climate events are known to introduce disturbances in the ecosystem that cause long-term changes in carbon balance and radiation reflectance. However, how these ecosystem function changes contribute to global warming in terms of radiative forcing (RF), especially in the years following a disturbance, still needs to be investigated. Read More

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September 2021

Genomes of novel Myxococcota reveal severely curtailed machineries for predation and cellular differentiation.

Appl Environ Microbiol 2021 Sep 15:AEM0170621. Epub 2021 Sep 15.

Department of Microbiology and Molecular Genetics.

Cultured Myxococcota are predominantly aerobic soil inhabitants, characterized by their highly coordinated predation and cellular differentiation capacities. Little is currently known regarding yet-uncultured Myxococcota from anaerobic, non-soil habitats. We analyzed genomes representing one novel order (o__JAFGXQ01) and one novel family (f__JAFGIB01) in the Myxococcota from an anoxic freshwater spring (Zodletone spring) in Oklahoma, USA. Read More

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September 2021

Distinct assembly processes and determinants of soil microbial communities between farmland and grassland in arid and semiarid areas.

Appl Environ Microbiol 2021 Sep 15:AEM0101021. Epub 2021 Sep 15.

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.

It is critical to identify the assembly processes and determinants of soil microbial communities to better predict soil microbial responses to environmental change in arid and semiarid areas. Here, soils from 16 grassland-only, 9 paired grassland and farmland, and 16 farmland-only sites were collected across the central Inner Mongolia Plateau covering a steep environmental gradient. Through analyzing the paired samples, we discovered that land uses had strong effects on soil microbial communities, but weak effects on their assembly processes. Read More

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September 2021

Effects of host plant resistance and fungicide applications on Ascochyta blight symptomology and yield of chickpea ( L.).

Plant Dis 2021 Sep 15. Epub 2021 Sep 15.

Montana State University Bozeman, 33052, Eastern Agricultural Research Center, Sidney, Montana, United States;

Ascochyta blight (AB), caused by the pathogen , is a major threat to chickpea production worldwide causing major yield losses and decreasing quality. Control of AB requires integrating pest management options including resistant cultivars and fungicide applications. To address this, fungicides with different modes of action were evaluated on three chickpea cultivars with differing levels of susceptibility to AB under irrigated and dryland conditions in 2015 to 2017. Read More

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September 2021

Assessment of biochemical compounds and antioxidant enzyme activity in barley and wheatgrass under water deficit condition.

J Sci Food Agric 2021 Sep 15. Epub 2021 Sep 15.

Department of Food Science and Biotechnology, Gachon University, Seongnam, 13120, Republic of Korea.

Background: Wheatgrass and barley grass are freshly sprouted leaves of wheat and barley seeds and are rich sources of phytochemicals. This study was conducted to investigate the effects of drought stress on the biochemical compounds and antioxidant activities of barley and wheatgrass extracts. The grass was cultivated in the organic soil growing medium with different drought stress, mainly control with 100% water holding capacity (WHC), mild drought-stress with 75% WHC, moderate drought-stress with 50% WHC, and severe drought stress with 25% WHC in a growth chamber by controlling temperature (20/15 °C, day/night), light (12/12 h, light/dark; intensity 150 μmol m s with quantum dot light-emitting diodes), and relative humidity (60%) for 7-days. Read More

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September 2021

Arsenic-induced oxidative stress in Brassica oleracea: Multivariate and literature data analyses of physiological parameters, applied levels and plant organ type.

Environ Geochem Health 2021 Sep 15. Epub 2021 Sep 15.

Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès - Toulouse II, 5 allée Machado A, 31058cedex 9, Toulouse, France.

Plant redox homeostasis governs the uptake, toxicity and tolerance mechanism of toxic trace elements and thereby elucidates the remediation potential of a plant. Moreover, plant toxicity/tolerance mechanisms control the trace element compartmentation in edible and non-edible plant organs as well as the associated health hazards. Therefore, it is imperative to unravel the cellular mechanism involved in trace element toxicity and tolerance. Read More

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September 2021

Transporters and transcription factors gene families involved in improving nitrogen use efficiency (NUE) and assimilation in rice (Oryza sativa L.).

Transgenic Res 2021 Sep 15. Epub 2021 Sep 15.

School of Life Sciences, University of Science and Technology of China (USTC), Hefei, 230027, Anhui, China.

Nitrogen (N) as a macronutrient is an important determinant of plant growth. The excessive usage of chemical fertilizers is increasing environmental pollution; hence, the improvement of crop's nitrogen use efficiency (NUE) is imperative for sustainable agriculture. N uptake, transportation, assimilation, and remobilization are four important determinants of plant NUE. Read More

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September 2021

Glycinebetaine: a versatile protectant to improve rice performance against aluminium stress by regulating aluminium uptake and translocation.

Plant Cell Rep 2021 Sep 15. Epub 2021 Sep 15.

College of Life Sciences, State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Taian, 271018, Shandong, China.

Key Message: Glycinebetaine alleviates the detrimental effects of aluminium stress by regulating aluminium uptake and translocation, maintaining PSII activity, and activating the oxidative defence, thereby maintaining the growth and development of rice. Aluminium (Al) toxicity is one of the primary growth-limiting factors that limits plant growth and crop productivity in acidic soils. Rice (Oryza sativa L. Read More

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September 2021

STOP1 activates NRT1.1-mediated nitrate uptake to create a favorable rhizospheric pH for plant adaptation to acidity.

Plant Cell 2021 Sep 15. Epub 2021 Sep 15.

State Key Laboratory of Plant Physiology and Biochemistry, College of Natural Resources and Environmental Science, Zhejiang University, Hangzhou, 310058, China.

Protons (H+) in acidic soils arrest plant growth. However, the mechanisms by which plants optimize their biological processes to diminish the unfavorable effects of H+ stress remain largely unclear. Here, we showed that in the roots of Arabidopsis thaliana, the C2H2-type transcription factor STOP1 in the nucleus was enriched by low pH in a nitrate-independent manner, with the spatial expression pattern of NITRATE TRANSPORTER 1. Read More

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September 2021

PLANT CELL MECHANOBIOLOGY: GREATER THAN THE SUM OF ITS PARTS.

Plant Cell 2021 Sep 15. Epub 2021 Sep 15.

Department of Biology and Center for Engineering Mechanobiology, Washington University in St Louis, One Brookings Drive, St. Louis, MO 63130.

The ability to sense and respond to physical forces is critical for the proper function of cells, tissues, and organisms across the evolutionary tree. Plants sense gravity, osmotic conditions, pathogen invasion, wind, and the presence of barriers in the soil, and dynamically integrate internal and external stimuli during every stage of growth and development. While the field of plant mechanobiology is growing, much is still poorly understood-including the interplay between mechanical and biochemical information at the single-cell level. Read More

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September 2021

Tree phyllospheres are a habitat for diverse populations of CO-oxidising bacteria.

Environ Microbiol 2021 Sep 15. Epub 2021 Sep 15.

School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK.

Carbon monoxide (CO) is both a ubiquitous atmospheric trace gas and an air pollutant. While aerobic CO-degrading microorganisms in soils and oceans are estimated to remove ~370 Tg of CO per year, the presence of CO-degrading microorganisms in above-ground habitats, such as the phyllosphere, and their potential role in CO cycling remains unknown. CO-degradation by leaf washes of two common British trees, Ilex aquifolium and Crataegus monogyna, demonstrated CO uptake in all samples investigated. Read More

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September 2021

Identification of essential β-oxidation genes and corresponding metabolites for oestrogen degradation by actinobacteria.

Microb Biotechnol 2021 Sep 15. Epub 2021 Sep 15.

Biodiversity Research Center, Academia Sinica, Taipei, 115, Taiwan.

Steroidal oestrogens (C ) are contaminants receiving increasing attention due to their endocrine-disrupting activities at sub-nanomolar concentrations. Although oestrogens can be eliminated through photodegradation, microbial function is critical for removing oestrogens from ecosystems devoid of sunlight exposure including activated sludge, soils and aquatic sediments. Actinobacteria were found to be key oestrogen degraders in manure-contaminated soils and estuarine sediments. Read More

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September 2021

Improved accuracy and reduced uncertainty in greenhouse gas inventories by refining the IPCC emission factor for direct N O emissions from nitrogen inputs to managed soils.

Glob Chang Biol 2021 Sep 15. Epub 2021 Sep 15.

Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, USA.

Most national GHG inventories estimating direct N O emissions from managed soils rely on a default Tier 1 emission factor (EF ) amounting to 1% of nitrogen inputs. Recent research has however demonstrated the potential for refining the EF considering variables that are readily available at national scales. Building on existing reviews, we produced a large dataset (n = 848) enriched in dry and low latitude tropical climates observations as compared to former global efforts and disaggregated the EF according to most meaningful controlling factors. Read More

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September 2021

Electrokinetic sweeping of colloids at a reactive magnesium oxide interface.

Soft Matter 2021 Sep 15. Epub 2021 Sep 15.

Univ Lyon, Univ Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, 6 Villeurbanne, France.

Investigating the electrokinetic (EK) response in the vicinity of interfaces has regained interest due to the development of new membrane based processes for energy harvesting or soil depollution. However, the case of reactive interfaces, ubiquitous in these processes, remains scarcely explored. Here we experimentally investigate the EK response of a model interface between an aqueous electrolyte and a bulk MgO crystal surface (100), for different pH. Read More

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September 2021

Nitrifier denitrification dominates nitrous oxide production in composting and can be inhibited by a bioelectrochemical nitrification inhibitor.

Bioresour Technol 2021 Aug 28;341:125851. Epub 2021 Aug 28.

Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Science, 286 Huaizhong Road, Shijiazhuang 050021, Hebei, China. Electronic address:

Targeted options to reduce nitrous oxide (NO) emission from composting is scarce due to challenges in disentangling the complex NO production pathways. Here, combined approaches of nitrogen form analysis, isotopocule mapping, quantitative PCR, and Illumina MiSeq sequencing were used to differentiate NO production pathways and decipher the underlying biochemical mechanisms. Results suggested that most NO was produced at the latter stage through nitrifier denitrification. Read More

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Kitchen waste hydrolysate enhances sewage treatment efficiency with different biological process compared with glucose.

Bioresour Technol 2021 Sep 9;341:125904. Epub 2021 Sep 9.

Chongqing Key Lab of Soil Multi-Scale Interfacial Process, and College of Resources and Environment, Southwest University, Chongqing 400716, China.

Insufficient carbon source is the primary factor that limits biological nitrogen and phosphorus removal during sewage treatment. This study investigates the feasibility and biological process of kitchen waste hydrolysate (KWH) replacing glucose to improve pollutant removal efficiency. It was found that using KWH as carbon source achieved better removal effect than glucose during sewage treatment. Read More

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September 2021

Interaction between polychlorinated biphenyls and dissolved organic matter of different molecular weights from natural and anthropic sources.

J Environ Manage 2021 Sep 7;299:113645. Epub 2021 Sep 7.

Organic Geochemistry Lab, CSIC Instituto de Investigaciones Marinas, 36208, Vigo, Spain.

Polychlorinated biphenyls (PCBs) are compounds of significant interest due to high toxicity, persistence, long-range atmospheric transport, and bioaccumulation. These compounds can interact with components present in the environment, including dissolved organic matter (DOM) in soils and waters, thereby modifying its availability and movement. In this study, DOM was fractionated by ultrafiltration and characterized according to its hydrophobicity and hydrophilicity, then the interaction of a series of PCBs and different DOM fractions was evaluated. Read More

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September 2021

Key factors influencing on vegetation restoration in the gullies of the Mollisols.

J Environ Manage 2021 Sep 8;299:113704. Epub 2021 Sep 8.

Northeast Agricultural University, 600 Changjiang Rd, Harbin, 150030, PR China.

Natural vegetation restoration (NVR) highly relates to the development of gully erosion, and is mainly determined by both the soil properties and species competition in the gullies. However, it is still not clear what are the key factors influencing on the vegetation restoration in the gullies with the poor soil properties (e.g. Read More

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September 2021

Contrasting sources and fate of nitrogen compounds in different groundwater systems in the Central Yangtze River Basin.

Environ Pollut 2021 Sep 6;290:118119. Epub 2021 Sep 6.

State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, Wuhan, 430078, China; School of Environmental Studies, State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430078, China.

Although groundwater nitrogen pollution has been widely studied, the control of hydrogeological conditions on behavior of nitrogen compounds has been poorly understood. In this study, multiple stable isotopes (N/C/H/O), spectral characteristics of DOM coupled with water chemistry were used to reveal the sources and fate of nitrate and ammonium in three subareas with different hydrogeological conditions in the Central Yangtze River Basin. We identified three contrasting patterns of nitrogen sources and fate in groundwater controlled by different aquifer features. Read More

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September 2021

Source apportionment and human health risk assessment of trace metals and metalloids in surface soils of the Mugan Plain, the Republic of Azerbaijan.

Environ Pollut 2021 Aug 27;290:118058. Epub 2021 Aug 27.

Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea. Electronic address:

The Mugan Plain is the most productive area in the Republic of Azerbaijan, but a previous study confirmed trace metal and metalloid (TM&M) contamination with Cr, Ni and Pb, and the potential ecological risk of As was estimated. However, no industrial activity was previously reported in this area; thus, a source apportionment model using positive matrix factorization (PMF) was employed to identify pollution sources, and a human health risk assessment was conducted to evaluate noncarcinogenic and carcinogenic risks. Surface soil samples were collected from 349 sites, and six major elements (Si, Ca, Cl, P, S and Sr) and 8 TM&Ms (As, Cd, Cr, Co, Cu, Ni, Pb and Zn) were analyzed by X-ray fluorescence and employed for further apportionment and risk assessment. Read More

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Toxicity of isoprocarb to earthworms (Eisenia fetida): Oxidative stress, neurotoxicity, biochemical responses and detoxification mechanisms.

Environ Pollut 2021 Aug 28;290:118038. Epub 2021 Aug 28.

Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China; Agricultural Environment and Farmland Conservation Experiment Station of Ministry Agriculture, Shanghai, 201403, China.

Isoprocarb (IPC) is a conventional carbamate with high insecticidal activity, however, generalized use of it may cause soil contamination and adversely implicate non-target biota. Following OECD standardized toxicological protocols, the toxic effects of IPC on Eisenia fetida at lethal and sublethal concentrations were examined to elucidate its toxic modes of action as well as biochemical and detoxification responses of E. fetida. Read More

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Static modelling of the material flows of micro- and nanoplastic particles caused by the use of vehicle tyres.

Environ Pollut 2021 Sep 3;290:118102. Epub 2021 Sep 3.

University of Natural Resources and Life Sciences, Institute of Waste Management, Muthgasse 107, 1190, Vienna, Austria.

The emissions of tyre wear particles (TWPs) into the environment are increasing and have negative impacts on the environment and human health. The aim of this study was therefore to establish a mass balance for vehicle tyres und TWP emissions in Austria using static material flow analysis, which enabled a quantification of mass flows of rubber including carbon black as the most mass-relevant tyre filler. Vehicle-specific and mileage-dependent emission factors were used to calculate the TWP emissions. Read More

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September 2021

A critical review of the environmental impacts of manufactured nano-objects on earthworm species.

Environ Pollut 2021 Aug 31;290:118041. Epub 2021 Aug 31.

Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation and College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, PR China. Electronic address:

The presence of manufactured nano-objects (MNOs) in various consumer or their (future large-scale) use as nanoagrochemical have increased with the rapid development of nanotechnology and therefore, concerns associated with its possible ecotoxicological effects are also arising. MNOs are releasing along the product life cycle, consequently accumulating in soils and other environmental matrices, and potentially leading to adverse effects on soil biota and their associated processes. Earthworms, of the group of Oligochaetes, are an ecologically significant group of organisms and play an important role in soil remediation, as well as acting as a potential vector for trophic transfer of MNOs through the food chain. Read More

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Column tests for evaluation of the enzymatic biodegradation capacity of hydrocarbons (C-C) contaminated soil.

Environ Pollut 2021 Aug 17;290:117986. Epub 2021 Aug 17.

TechnoRem Inc., 4701, rue Louis-B.-Mayer, Laval, Québec, H7P 6G5, Canada.

Though many studies pertaining to soil bioremediation have been performed to study the microbial kinetics in shake flasks, the process efficiency in column tests is seldom. In the present study, soil columns tests were carried out to study the biodegradation of soil contaminated with a high concentration of diesel (≈19.5 g/kg) petroleum hydrocarbons expressed as C-C. Read More

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Adsorption and photochemical capacity on 17α-ethinylestradiol by char produced in the thermo treatment process of plastic waste.

J Hazard Mater 2021 Sep 7;423(Pt A):127066. Epub 2021 Sep 7.

Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; Yunnan Provincial Key Laboratory of Carbon Sequestration and Pollution Control in Soils, Kunming 650500, China.

Plastic is a major component of solid waste. It is often thermally treated, generating microplastics and plastic-char which end up as landfill. This study investigated the potential of plastic-char for treating persistent organic pollutants of aqueous media using 17α-ethinylestradiol (EE2) as a target contaminant. Read More

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September 2021

Microbial response and adaption to thallium contamination in soil profiles.

J Hazard Mater 2021 Aug 30;423(Pt A):127080. Epub 2021 Aug 30.

Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China.

Thallium (Tl) is a trace metal with high toxicity. Comprehensive investigation of spatial distribution of Tl and microorganism is still limited in soils from mining area. In this study, 16S rRNA sequencing and network analysis were used for deciphering the co-occurrence patterns of bacterial communities in two different types of soil profiles around a typical Tl-bearing pyrite mine. Read More

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Competitive kinetics of Ni(II)/Co(II) and Cr(VI)/P(V) adsorption and desorption on goethite: A unified thermodynamically based model.

J Hazard Mater 2021 Aug 25;423(Pt A):127028. Epub 2021 Aug 25.

State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Xianlin Ave. 163, Nanjing 210023, PR China. Electronic address:

Predicting the dynamic behavior of coexisting ions on mineral interface is essential to understanding their lability in soil matrix, but a mechanical kinetic model for predicting competitive adsorption is lacking. In this study, the thermodynamic and kinetic adsorption behaviors of Ni(II), Co(II), Cr(VI), and P(V) on goethite under various condition were investigated by batch and stirred-flow experiments, respectively. The equilibrium model CD-MUSIC was developed to describe their equilibrium behavior, followed by the development of a multi-rate kinetic model constrained by the equilibrium model to describe their kinetic behavior. Read More

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Source apportionment and crop bioaccumulation of perfluoroalkyl acids and novel alternatives in an industrial-intensive region with fluorochemical production, China: Health implications for human exposure.

J Hazard Mater 2021 Aug 24;423(Pt A):127019. Epub 2021 Aug 24.

Department of Civil & Environmental Engineering, Imperial College London, London SW72BU, UK.

Due to their great environmental hazards, the widely used legacy perfluoroalkyl acids (PFAAs) are gradually restricted, and novel alternatives are being developed and applied. For efficient control of emerging environmental risks in agricultural production, we systematically studied the source apportionment in field soils and bioaccumulation characteristics in multiple crops of 12 PFAAs and five novel alternatives in an industrial-intensive region of China, followed by human exposure estimation and health risk assessment. Compared with perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), shorter-chained PFAAs and novel alternatives have become the dominant components in local soils and crops, indicating their wide application. Read More

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Determination of priority control factors for the management of soil trace metal(loid)s based on source-oriented health risk assessment.

J Hazard Mater 2021 Sep 2;423(Pt A):127116. Epub 2021 Sep 2.

Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Electronic address:

Trace metal(loid)s (TMs) in soils can seriously threaten the ecological environment and human health. With the limitation of resources and costs, determining priority control factor is critical for managing soil TM pollution. To explore the pollution characteristics, source apportionment, and human health risk of TMs, a total of 209 surface soil samples were collected from Anqing City, China. Read More

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September 2021

Enzymatic biodegradation of highly p-xylene contaminated soil using cold-active enzymes: A soil column study.

J Hazard Mater 2021 Sep 2;423(Pt A):127099. Epub 2021 Sep 2.

INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada. Electronic address:

Enzymatic bioremediation is a sustainable and environment-friendly method for the clean-up of contaminated soil and water. In the present study, enzymatic bioremediation was designed using cold-active enzymes (psychrozymes) which catalyze oxidation steps of p-xylene biodegradation in highly contaminated soil (initial concentration of 13,000 mg/kg). The enzymes were obtained via co-culture of two psychrophilic Pseudomonas strains and characterized by kinetic studies and tandem LC-MS/MS. Read More

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September 2021