Effect of Fe(II) on reactivity of heterotrophic denitrifiers in the remediation of nitrate- and Fe(II)-contaminated groundwater.


:Heterotrophic denitrifiers, capable of simultaneous nitrate reduction and Fe(II) oxidation, can be applied for the remediation of nitrate and Fe(II) combined contamination in groundwater. Under strictly anaerobic condition, denitrifying microbial communities were enriched with the coexistence of soluble nitrate, Fe(II) and associated nutrient elements to monitor the denitrification process. Low abundance of Fe(II) (e.g., 10 mg L-1 in this study) tended to stimulate the activity of denitrifying microbial communities. However, elevated Fe(II) concentration (50 and 100 mg L-1 in this study), acted as a stress, strongly inhibited the activity and reproduction of denitrifiers. Besides, through thermodynamics calculations, methanol rather than Fe(II) was proved to be the preferable electron donors for both energy metabolism and anabolism. Betaproteobacteria was found to be the most predominant (sub)phylum in all enriched microbial assemblages. Methylovesartilis was the most predominant group mainly catalyzed for methanol based denitrification, and others denitrifiers included Methylophilaceae, Dechloromonas and Denitratisoma. Excessive Fe(II) in the solution greatly reduced the proportions of these denitrifying groups, while the influence seemed to be less apparent on functional genes composition. As such, a conceptional metabolism pathway of the most dominant genus (i.e., Methylovesartilis) for nitrate reducing as well as methanol and Fe(II) oxidation confirmed that biotic nitrate reducing and Fe(II) oxidizing were potentially proceeded in cytoplasm by enzymes such as NarGHI. The Fe(II) oxidation rate depended on the rate of Fe(II) entering into the cell. These findings provide a clear mechanistic understanding of heterotrophic denitrification coupling with Fe(II) oxidation, and environmental implication for the bioremediation of nitrate and Fe(II) contaminated groundwater.


Ecotoxicol Environ Saf


Liu Y,Feng C,Sheng Y,Dong S,Chen N,Hao C




Has Abstract


2018-12-30 00:00:00












  • Effects of various warming patterns on Cd transfer in soil-rice systems under Free Air Temperature Increase (FATI) conditions.

    abstract::Global warming has become an important research topic in different disciplines around the world, especially in the fields of environment quality and food security. As a potential problem in soil environments, cadmium (Cd) contamination of rice under global warming conditions has not been thoroughly investigated. In th...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Ge L,Cang L,Ata-Ul-Karim ST,Yang J,Zhou D

    更新日期:2019-01-30 00:00:00

  • The effects of continuous diazinon exposure on growth and reproduction in Japanese medaka using a modified Medaka Extended One Generation Reproduction Test (MEOGRT).

    abstract::The Medaka Extended One Generation Reproduction Test (MEOGRT) is a Tier 2 test within U.S. Environmental Protection Agency's (USEPA) Endocrine Disruptor Screening Program (EDSP), designed to characterize the potential adverse effects to fish of exposure to chemical that can cause disruption of the endocrine system. Th...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Flynn K,Lothenbach D,Whiteman F,Hammermeister D,Swintek J,Etterson M,Johnson R

    更新日期:2018-10-30 00:00:00

  • High temperature damage to fatty acids and carbohydrate metabolism in tall fescue by coupling deep transcriptome and metabolome analysis.

    abstract::High temperature damage impairs the growth of tall fescue by inhibiting secondary metabolites. Little is known about the regulation pattern of the fatty acids and carbohydrate metabolism at the whole-transcriptome level in tall fescue under high temperature stress. Here, two tall fescue genotypes, heat tolerant PI5787...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Hu T,Sun XY,Zhao ZJ,Amombo E,Fu JM

    更新日期:2020-10-15 00:00:00

  • Comparison of rates of direct and indirect migration of phosphorus flame retardants from flame-retardant-treated polyester curtains to indoor dust.

    abstract::In this study, the pathways for migration of phosphorus flame retardants (PFRs), tris(1,3-dichloroisopropyl) phosphate (TDCPP) and tricresyl phosphate (TCsP) which were detected from curtains often, from flame-retardant-treated polyester curtains to indoor dust were investigated. Two possible migration pathways were c...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Tokumura M,Ogo S,Kume K,Muramatsu K,Wang Q,Miyake Y,Amagai T,Makino M

    更新日期:2019-03-01 00:00:00

  • Geochemical cycle of mercury associated with wet deposition and inflows in a subalpine wetland.

    abstract::Subalpine wetland is a mercury (Hg) sensitive ecosystem, but there is poor understanding of Hg behavior in this typical wetland. Here, distribution and speciation of Hg in waters of a subalpine wetland (Dajiuhu) in China were investigated, and an initial model of the Hg geochemical cycle in the wetland was established...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Ning Y,Liu J,Huang X,Wang P,Yang S,Bi X,Yang X,Mo J

    更新日期:2021-01-15 00:00:00

  • Brominated flame retardant (BFRs) and Dechlorane Plus (DP) in paired human serum and segmented hair.

    abstract::Brominated flame retardants (BFRs) and Dechlorane Plus (DP) were measured in both human hair and paired serum samples from a cohort of university students in South China. Segmental analysis was conducted to explore gender difference and the relationships between the hair and serum. The concentrations of total PBDEs in...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Qiao L,Zheng XB,Yan X,Wang MH,Zheng J,Chen SJ,Yang ZY,Mai BX

    更新日期:2018-01-01 00:00:00

  • Mineral elements uptake and physiological response of Amaranthus mangostanus (L.) as affected by biochar.

    abstract::Amaranthus mangostanus L. (amaranth) was hydroponically grown in different concentrations of biochar amended nutrient solution to investigate the mineral elements migration and physiological response of amaranth as affected by biochar. Our results showed that exposure to 26.6 g/L of biochar greatly increased the root ...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Jia W,Wang C,Ma C,Wang J,Sun H,Xing B

    更新日期:2019-07-15 00:00:00

  • Metabolic and proteomic mechanism of benzo[a]pyrene degradation by Brevibacillus brevis.

    abstract::Benzo[a]pyrene (BaP) is a model compound of polycyclic aromatic hydrocarbons. The relationship between its toxicity and some target biomolecules has been investigated. To reveal the interactions of BaP biodegradation and metabolic network, BaP intermediates, proteome, carbon metabolism and ion transport were analyzed....

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Zhu Y,Chen K,Ding Y,Situ D,Li Y,Long Y,Wang L,Ye J

    更新日期:2019-05-15 00:00:00

  • Protonation state effects of estrogen receptor α on the recognition mechanisms by perfluorooctanoic acid and perfluorooctane sulfonate: A computational study.

    abstract::Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) have been reported to cause adverse health effects on wildlife as well as humans. Numerous studies demonstrated that PFOA and PFOS could interfere with the transcriptional activation of estrogen receptor α (ERα) by mimicking the function of endogenous ...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Cao H,Wang L,Liang Y,Li Z,Feng H,Sun Y,Zhang A,Fu J

    更新日期:2019-04-30 00:00:00

  • Planarians in toxicology. I. Physiology of sexual-only Dugesia dorotocephala: effects of diet and population density on adult weight and cocoon production.

    abstract::A rare sexual-only race of Dugesia dorotocephala produces offspring from cocoons rather than by fissioning, allowing individuals to be accurately aged. Because each animal possesses fully developed male and female reproductive systems and a true brain with synapses, many types of toxicological studies which normally u...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Kostelecky J,Elliott B,Schaeffer DJ

    更新日期:1989-12-01 00:00:00

  • Low level exposure to crude oil impacts avian flight performance: The Deepwater Horizon oil spill effect on migratory birds.

    abstract::In 2010, the Deepwater Horizon oil spill released 134 million gallons of crude oil into the Gulf of Mexico making it the largest oil spill in US history. The three month oil spill left tens of thousands of birds dead; however, the fate of tens of thousands of other migratory birds that were affected but did not immedi...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Perez CR,Moye JK,Cacela D,Dean KM,Pritsos CA

    更新日期:2017-12-01 00:00:00

  • Nonylphenol biodegradation in river sediment and associated shifts in community structures of bacteria and ammonia-oxidizing microorganisms.

    abstract::Nonylphenol (NP) is one of commonly detected contaminants in the environment. Biological degradation is mainly responsible for remediation of NP-contaminated site. Knowledge about the structure of NP-degrading microbial community is still very limited. Microcosms were constructed to investigate the structure of microb...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Wang Z,Yang Y,Sun W,Xie S,Liu Y

    更新日期:2014-08-01 00:00:00

  • Toxic effects of pentachlorophenol and other pollutants on the mineralization of acetate in several soils.

    abstract::The mineralization of [14C]acetate was studied in bottles with fresh soil and groundwater. Addition of toxicants inhibited the formation of 14CO2 and dose-effect curves were obtained. The acetate mineralization was not inhibited by zinc, cadmium, K2Cr2O7, chloropyrifos, and paraquat in an acid sandy soil at 1000 mg/kg...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: van Beelen P,Fleuren-Kemilä AK

    更新日期:1993-08-01 00:00:00

  • Rapid and simultaneous analysis of tetrabromobisphenol A and hexabromocyclododecane in water by direct immersion solid phase microextraction: Uniform design to explore factors.

    abstract::Direct immersion solid phase microextraction (DI-SPME) coupled to liquid chromatography-tandem mass spectrometry (LC-MS/MS) is of significant research interest because of its low solvent consumption, simple design, and efficient, sensitive, fast performance. In this work, a combination of these two methods (DI-SPME-LC...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Yu Y,Zhu X,Zhu J,Li L,Zhang X,Xiang M,Ma R,Yu L,Yu Z,Wang Z

    更新日期:2019-07-30 00:00:00

  • Terrestrial microcosms in a feasibility study on the remediation of diesel-contaminated soils.

    abstract::Phytoremediation and bioremediation are site-specific processes, and feasibility studies should be performed as an initial step in scaling-up these processes. Soil microcosms can be a useful tool for investigating the efficiency of remediation alternatives under realistic conditions. In the present study, the degradat...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Fernández MD,Pro J,Alonso C,Aragonese P,Tarazona JV

    更新日期:2011-11-01 00:00:00

  • Synthesis of Ag and TiO2 modified polycaprolactone electrospun nanofibers (PCL/TiO2-Ag NFs) as a multifunctional material for SERS, photocatalysis and antibacterial applications.

    abstract::In this study, we reported the design and the fabrication of Ag and TiO2 modified polycaprolactone (PCL) electrospun nanofiber (NF) mats. The as-prepared NF mats were fabricated by one-step electrospinning and it was exploited for three different purposes (i) reusable SERS substrate for quantitative analysis to trace ...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Karagoz S,Kiremitler NB,Sakir M,Salem S,Onses MS,Sahmetlioglu E,Ceylan A,Yilmaz E

    更新日期:2020-01-30 00:00:00

  • Multi-phase distribution and risk assessment of endocrine disrupting chemicals in the surface water of the Shaying River, -Huai River Basin, China.

    abstract::Herein we investigated the multi-phase distribution and estrogenic effects of endocrine disrupting chemicals (EDCs) in suspended particulate matter (SPM), colloids, and soluble phases from the Shaying River to assess the composition of estrogenic compounds and associated estrogenic risk. The yeast two hybrid (YES) met...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Huang Y,Xie X,Zhou LJ,Ji X,Gao B,Xu GZ,Li A

    更新日期:2019-05-30 00:00:00

  • Effects of the fungicide azoxystrobin on Atlantic salmon (Salmo salar L.) smolt.

    abstract::Atlantic salmon smolts were exposed to three doses of the fungicide azoxystrobin for 4 days, and physiological blood parameters and transcriptional effects in liver and muscle were evaluated in search for potential negative effects. Azoxystrobin exposure mediated up-regulation of catalase, MAPK1 and IGFBP1 in liver ti...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Olsvik PA,Kroglund F,Finstad B,Kristensen T

    更新日期:2010-11-01 00:00:00

  • Impacts of dietary supplementation with p-coumaric acid and indole-3-acetic acid on survival and biochemical response of honey bees treated with tau-fluvalinate.

    abstract::Pollinator populations are in decline worldwide. Multiple factors have been cited as potential causes to these declines. In honey bees, a combination of stressors is known to cause colony losses. Adequate nutrition is a key factor for honey bee growth and colony development. Several studies show that the nutritional q...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Mitton GA,Szawarski N,Mitton FM,Iglesias A,Eguaras MJ,Ruffinengo SR,Maggi MD

    更新日期:2020-02-01 00:00:00

  • Mechanism and prediction of nonspecific toxicity to fish using bioconcentration characteristics.

    abstract::A basic theory of nonspecific toxicity has been developed using bioconcentration as a basis and applying kinetic relationships developed in previous work. This approach has involved calculation of the critical volume fraction and critical concentration in lipid tissue of fish for a variety of organic compounds at the ...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Connell D,Markwell R

    更新日期:1992-12-01 00:00:00

  • Effects of TiO2, SiO2, Ag and CdTe/CdS quantum dots nanoparticles on toxicity of cadmium towards Chlamydomonas reinhardtii.

    abstract::Nanoparticles (NPs) are inevitably released into the aquatic environment for being widely used and may affect the toxicity of other contaminants already present in the environment, such as trace metals. However, the effects of NPs on the ecotoxicity of cadmium (Cd), a common environmental trace metal pollutant, are no...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Yu Z,Hao R,Zhang L,Zhu Y

    更新日期:2018-07-30 00:00:00

  • Theoretical and experimental adsorption studies of sulfamethoxazole and ketoprofen on synthesized ionic liquids modified CNTs.

    abstract::The adsorption of sulfamethoxazole (SMZ) and ketoprofen (KET) using carbon nanotubes (CNTs) and CNTs modified with ionic liquids (ILs) was investigated. Two ionic liquids (1-benzyl, 3-hexyl imidazolium, IL1 and 1-benzyl, 3-decahexyl imidazolium, IL2) were synthesized, and characterized by nuclear magnetic resonance (1...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Lawal IA,Lawal MM,Akpotu SO,Azeez MA,Ndungu P,Moodley B

    更新日期:2018-10-01 00:00:00

  • Short-term exposure to sublethal tebuconazole induces physiological impairment in male zebrafish (Danio rerio).

    abstract::The aim of the present study was to assess the physiological response of male zebrafish Danio rerio to the fungicide tebuconazole and recovery in fungicide-free water. Acute toxicity tests were carried out and the median lethal concentration (LC(50)) from 24 to 96 h was calculated. The fish were exposed to a sublethal...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Sancho E,Villarroel MJ,Fernández C,Andreu E,Ferrando MD

    更新日期:2010-03-01 00:00:00

  • Modulatory effect of metal ions on the immune response of fish: in vivo and in vitro influence of MnCl2 on NK activity of carp pronephros cells.

    abstract::The in vivo and in vitro influence of MnCl2 on carp pronephros cells was investigated. Increased cytotoxicity against both YAC-1 and P 815 target cells was observed following an intraperitoneal injection of 40, 80, or 120 micrograms MnCl2/g body wt administrated 24 hr prior to the in vitro 51Cr release assay. Similarl...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Ghanmi Z,Rouabhia M,Alifuddin M,Troutaud D,Deschaux P

    更新日期:1990-12-01 00:00:00

  • Three-dimensional porous graphene oxide-maize amylopectin composites with controllable pore-sizes and good adsorption-desorption properties: Facile fabrication and reutilization, and the adsorption mechanism.

    abstract::Three-dimensional (3D) porous graphene oxide-maize amylopectin (GO-MA) composites with controllable pore-sizes composites in the range of 6-40 nm were prepared by facile hydrothermal-assisted assembly approaches. The morphologies, pore sizes, specific surface area (SSA) and compositions of GO-MAx:y composites with and...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Zhao XR,Xu X,Teng J,Zhou N,Zhou Z,Jiang XY,Jiao FP,Yu JG

    更新日期:2019-07-30 00:00:00

  • Wetland macrophyte community response to and recovery from direct application of glyphosate-based herbicides.

    abstract::Community-scale impacts of glyphosate-based herbicides on wetland plant communities and the magnitude of those impacts that should be considered biologically relevant are poorly understood. We contrast three different thresholds for setting biologically meaningful critical effect sizes for complex ANOVA study designs....

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Mudge JF,Houlahan JE

    更新日期:2019-11-15 00:00:00

  • Toxic effects of bleached and unbleached paper mill effluents in primary cultures of rainbow trout hepatocytes.

    abstract::Toxic effects of unbleached (sulfate or sulfite) and bleached (sulfate) paper mill effluents were studied in a primary culture of rainbow trout liver cells. The effluents and control water from a clean area were extracted with diethyl ether and added to the cultures dissolved in dimethyl sulfoxide. Plasma membrane int...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Pesonen M,Andersson T

    更新日期:1992-08-01 00:00:00

  • Assessing lead toxicity in the clam Ruditapes philippinarum: Bioaccumulation and biochemical responses.

    abstract::Lead (Pb) is a non-essential metal. Its occurrence in the environment is related principally to anthropogenic contamination. Pb is toxic to aquatic organisms and can provoke damage to membranes and inhibit the activity of essential enzymes. The filter-feeding, Manila clam Ruditapes philippinarum is widely used as a bi...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Aouini F,Trombini C,Volland M,Elcafsi M,Blasco J

    更新日期:2018-08-30 00:00:00

  • Influence of soil temperature and moisture on biochemical biomarkers in earthworm and microbial activity after exposure to propiconazole and chlorantraniliprole.

    abstract::Predicted climate change could impact the effects that various chemicals have on organisms. Increased temperature or change in precipitation regime could either enhance or lower toxicity of pesticides. The aim of this study is to assess how change in temperature and soil moisture affect biochemical biomarkers in Eisen...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Hackenberger DK,Palijan G,Lončarić Ž,Jovanović Glavaš O,Hackenberger BK

    更新日期:2018-02-01 00:00:00

  • Using estimates of metal bioavailability in the soil and genetic variation of allozymes to investigate heavy metal tolerance in the earthworm Eisenia fetida (Oligochaeta).

    abstract::In a recent study, we showed that the earthworm species Eisenia fetida, inhabiting an extremely high metal polluted compost heap on a wine farm, did not have elevated body loads of the metals but exhibited genotoxic tolerance when exposed to Cd in the laboratory (Voua Otomo and Reinecke, 2010). To unravel the mechanis...

    journal_title:Ecotoxicology and environmental safety

    pub_type: 杂志文章


    authors: Voua Otomo P,Owojori OJ,Reinecke SA,Daniels S,Reinecke AJ

    更新日期:2011-10-01 00:00:00