Article
Environmental Sciences
Song Fang, Hai Nan, Dongqing Lv, Xiangwei You, Jianqiu Chen, Chengliang Li, Jiguang Zhang
Summary: The application of sulfoxaflor in greenhouse vegetable soil may lead to an increase in N2O emissions, impacting nitrogen cycling and utilization in the soil.
Article
Engineering, Environmental
Qianhua Wu, Xiaohan Jiang, Hanxin Wu, Lina Zou, Lubin Wang, Jiyan Shi
Summary: This study investigated the adsorption behavior of CuO NPs with regard to As in soil and the effects of CuO NPs on the microbial community in As-contaminated soil-rice systems. The results showed that CuO NPs could temporarily adsorb As in soil and high doses of CuO NPs promoted As release. CuO NPs also had significant impacts on the microbial diversity and gene abundance related to As cycling.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Jinlong Han, Yufei Xu, Duo Xu, Yunxia Niu, Lei Li, Fuping Li, Zhaoxin Li, Hao Wang
Summary: The effects of reclaimed water containing ofloxacin (OFL) and ciprofloxacin (CIP) in antibiotics polluted natural soil (APNS) were investigated. The experiment showed that OFL and CIP were mainly adsorbed and degraded at 30 cm, and their concentration increased with depth due to desorption from APNS. Changes in replenishment water concentration significantly affected OFL and CIP in pore water and soil. Soil microorganisms selectively degraded OFL and CIP, with degradation rates of 45.48% and 42.39% respectively. This study provides a reference for future research on the migration of trace organic pollutants under natural conditions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Hongda Sun, Zhuofan Li, Jinyu Wen, Qianqian Zhou, Yafang Gong, Xiaohan Zhao, Hui Mao
Summary: In this study, the effects of co-exposure to polyethylene microplastics (PE MPs) and zinc oxide nanoparticles (ZnO NPs) on maize growth, element distribution, speciation, and adsorption mechanism were evaluated through a pot experiment. The results showed that individual exposure to PE MPs had no significant toxicity, but significantly decreased maize grain yield. Exposure to ZnO NPs increased the concentration and distribution intensity of zinc in maize tissues. Interestingly, ZnO NPs were unable to be transported to the maize stem under co-exposure to PE MPs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Zainab Abdulsada, Richard Kibbee, Dina Schwertfeger, Juliska Princz, Maria DeRosa, Banu Ormeci
Summary: The research investigated the fate and removal of AgNPs during the chemical conditioning of anaerobically digested sludge and their impact on soil bacteria and health after land application. Results showed minimal impact of conditioned AgNPs at 20 mg AgNPs/g soil on the presence and diversity of important phyla in soil. The study provides new insight into the potential impacts of AgNPs and different sludge conditioning chemicals on soil biological activities and plant growth.
Article
Environmental Sciences
Cancan Qian, Jian Wu, Haodong Wang, Desong Yang, Jianghu Cui
Summary: nZVI treatment resulted in decreased soil pH value, redox potential, and Fe (II) content. It also significantly decreased the relative abundance of certain microbial communities related to carbon and nitrogen cycles. Additionally, nZVI treatment led to reduced grain yield and decreased protein content and essential nutrient levels in a dose-dependent manner. The metabolomics results indicated that nZVI interfered with the expression of lysine and glutathione by regulating antioxidant and protein synthesis pathways in rice.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Youming Dong, Minling Gao, Weiwen Qiu, Ling Xiao, Zimin Cheng, Hongchang Peng, Zhengguo Song
Summary: This study investigated the mechanisms by which microplastics affect soil sulfur mineralization. The results showed that the type, concentration, and size of microplastics are the main factors influencing sulfur mineralization. Additionally, microplastics directly alter the structure and activities of soil enzymes.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Environmental Sciences
Ved Prakash, Jose Peralta-Videa, Durgesh Kumar Tripathi, Xingmao Ma, Shivesh Sharma
Summary: The advent of the nanotechnology era provides a unique opportunity for sustainable agriculture, but requires adequate assessment and control of exposure and toxicity of nanoparticles. The increase in cerium oxide nanoparticles in water and soil affects soil microorganisms and plants, necessitating further research on their interactions in agricultural systems.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Green & Sustainable Science & Technology
Xiaodan Wang, Hua Ma, Chunyun Guan, Mei Guan
Summary: The overuse of chemical fertilizers in China has led to ecological problems, prompting the development of organic alternative fertilizers such as rapeseed green manure. This study reveals that the decomposition of rapeseed green manure can enhance soil nutrient content and improve soil bacterial community structure, especially under conditions where a higher amount of plant residue is returned.
Article
Environmental Sciences
Rui Zong, Zhenhua Wang, Wenhao Li, Olusola O. Ayantobo, Haiqiang Li, Libing Song
Summary: In drylands, seasonal freezing and thawing have a significant negative impact on soil microbial quality and multifunctionality, leading to soil degeneration in agroecosystems. Freezing and thawing promote the release of nutrients but decrease the microbial biomass carbon content. Fungal and bacterial communities in the soil are significantly affected, with fungal richness and diversity decreasing while bacterial diversity and evenness increasing.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Anamika Das, K. N. Yogalakshmi
Summary: The present study successfully degraded chlorpyrifos in contaminated soil using laccase-immobilized magnetic iron nanoparticles. The degradation efficiency gradually increased, with a maximum degradation rate of 83.6%.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
Yongquan Li, Caili Li, Ying Xin, Tao Huang, Jin Liu
Summary: Soil contaminated with oil can significantly reduce the abundance and diversity of bacteria and fungi, while promoting the relative abundance of certain bacterial species. Total organic carbon is a key factor that influences the microbial community in oil-contaminated soil.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Tianai Zhou, Shiv Prasher, Zhiming Qi, Saji George, Ali Mawof, Christopher Nzediegwu, Jaskaran Dhiman, Ramanbhai Patel
Summary: The study found that the presence of silver nanoparticles in wastewater significantly increased the uptake of various heavy metals by plants, while there were no significant differences in soil metal concentrations between the two treatments. The presence of silver nanoparticles in wastewater may exacerbate the uptake of heavy metals by food crops irrigated with wastewater, potentially posing a health risk for humans.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Environmental
Sara Peixoto, Susana Loureiro, Isabel Henriques
Summary: The study highlights the significant effects of Ag2S NPs on the soil microbiome composition, while AgNO3 exerts a stronger influence on both composition and functional parameters over time. Distinct variants of ammoniaoxidizing and nitrite-oxidizing bacteria genes emerged in silver-treated soils, suggesting a potential succession of bacteria with different degrees of silver-tolerance.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Zhenjun Zhang, Jiajiang Lin, Zuliang Chen
Summary: In this study, machine learning models were used to predict the impact of silver nanoparticles (AgNPs) on soil enzymes. The artificial neural network (ANN) optimized with genetic algorithm (GA) was found to be suitable for simulating overall trends, while the gradient boosting machine (GBM) and random forest (RF) were ideal for small-scale analysis. The study revealed that polyvinylpyrrolidone coated AgNPs had the most inhibitory effect on soil enzyme activity among the three types of AgNPs at the same dose. The ANN model indicated the importance order of four factors: dose > type > size > exposure time. The RF model suggested that the enzyme was more sensitive when experiments were conducted at specific doses, sizes, and exposure times. This study provides new insights on the regularity of soil enzyme responses to AgNPs.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Multidisciplinary Sciences
Caroline Bissardon, Marie-Pierre Isaure, Emmanuel Lesuisse, Mauro Rovezzi, Eric Lahera, Olivier Proux, Sylvain Bohic
Summary: The study of metals in biological systems using X-ray absorption spectroscopy (XAS) is of great interest. Sample preparation, especially for biological samples, is a critical and complex procedure. This paper proposes a cellular preparation protocol based on cryo-preserved samples, which allows for the analysis of biological samples in their near-native hydrated state to preserve the chemical integrity.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2022)
Article
Biochemistry & Molecular Biology
S. Morante, S. Botticelli, R. Chiaraluce, V. Consalvi, G. La Penna, L. Novak, A. Pasquo, M. Petrosino, O. Proux, G. Rossi, G. Salina, F. Stellato
Summary: This study investigates the stability of wild-type frataxin and its variants upon Co2+ binding, and confirms the stability ranking through comparative analysis of XAS spectra. The acidic ridge of frataxin is identified as the most likely location for metal binding sites, and the N-terminal disordered tail is found to modulate the protein's ability to interact with the metal.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Geochemistry & Geophysics
G. S. Pokrovski, C. Sanchez-Valle, S. Guillot, A. Y. Borisova, M. Munoz, A-L Auzende, O. Proux, J. Roux, J-L Hazemann, D. Testemale, Y. Shvarov
Summary: The redox dynamics of subduction processes remain poorly understood due to a lack of direct geochemical tracers. This study investigates the chemical and redox state of arsenic in serpentinites from the Tso Morari region, which are evidence of Himalayan subduction, using X-ray absorption spectroscopy. The findings reveal contrasting redox speciation of arsenic, from arsenide to arsenite and arsenate, allowing for reconstruction of the redox behavior of arsenic during subduction. The out-of-equilibrium release of highly oxidized fluids is reflected by the high As-V/As-III ratios observed. Arsenic in serpentinite is shown to be a sensitive record of subduction redox dynamics, providing valuable insights beyond traditional equilibrium approaches.
GEOCHEMICAL PERSPECTIVES LETTERS
(2022)
Article
Microbiology
Manon Janet-Maitre, Stephane Pont, Frerich M. Masson, Serena Sleiman, Julian W. Trouillon, Mylene Robert-Genthon, Benoit Gallet, Chantal Dumestre-Perard, Sylvie Elsen, Christine Moriscot, Bart W. Bardoel, Suzan H. M. Rooijakkers, Francois Cretin, Ina Attree
Summary: This study found that multiple factors, including bacterial surface-attached molecules and adaptation to stress, as well as intracellular polyphosphates and biotin, significantly affect Pseudomonas aeruginosa's ability to withstand membrane attack complex (MAC)-dependent killing in human plasma. These findings highlight the importance of understanding the complex interaction between bacterial pathogens and the human immune system for developing effective antibacterial strategies.
Article
Chemistry, Inorganic & Nuclear
Jeireimy Domergue, Pawel Guinard, Magali Douillard, Jacques Pecaut, Sarah Hostachy, Olivier Proux, Colette Lebrun, Alan Le Goff, Pascale Maldivi, Carole Duboc, Pascale Delangle
Summary: To control the cellular level of reactive oxygen species (ROS) and prevent pathologies related to oxidative stress, designing antioxidants based on natural enzymes involved in ROS degradation is a promising strategy. In this study, Ni complexes with tripeptides derived from the ATCUN motif were synthesized to mimic the active site of nickel superoxide dismutase (NiSOD). Six different Ni(II) complexes with various coordination modes were characterized and found to exhibit SOD-like activity. The complexes with equilibrium between N-coordination and S-coordination showed the highest efficiency, indicating the beneficial effect of a nearby proton relay. This study also demonstrated that two bound thiolates and two amidates are not prerequisites for the catalytic activity of NiSOD mimics.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sabah El Mohammad, Olivier Proux, Antonio Aguilar, Jean-Louis Hazemann, Christele Legens, Celine Chizallet, Kim Larmier
Summary: The formation of tungstate-mannose complexes in aqueous solution was characterized using a combination of experimental and theoretical techniques. The structures of the complexes were determined using NMR and X-ray absorption spectroscopy. The study identified new complexes and provided insights into the structure-reactivity relationships of these metal-sugar complexes.
INORGANIC CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
S. Botticelli, R. Chiaraluce, V. Consalvi, G. La Penna, A. Pasquo, M. Petrosino, O. Proux, G. C. Rossi, F. Stellato, S. Morante
Summary: In this study, it is demonstrated that Zn2+ ions are involved in the mechanism of SARS-CoV-2 virus evading immune response mediated by the BST2-tetherin host protein, supported by sequence analysis, molecular dynamics simulations, and X-ray absorption experiments.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Electrochemistry
Ana Marija Damjanovic, Anna Theresa Sophie Freiberg, Armin Siebel, Burak Koyutuerk, Davide Menga, Kevin Krempl, Pankaj Madkikar, Olivier Proux, Hubert Andreas Gasteiger, Michele Piana
Summary: Ex situ and operando X-ray absorption spectroscopy (XAS) were used to investigate the structure and degradation mechanism of Fe-based catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). The results showed that Fe3+ was incorporated in the ZrO2 structure and significant presence of Fe-N-C-type structures was excluded in the Fe0.07Zr0.93O2-delta/C catalyst. The aging process led to the formation of oxidic Fe clusters and Fe demetalation from the ZrO2 structure. The faster aging of Fe0.07Zr0.93O2-delta compared to Fe-N-C was attributed to improved mass transport to/from active sites.
Article
Biochemistry & Molecular Biology
Benoit Toubhans, Nour Alkafri, Marcos Quintela, David W. James, Caroline Bissardon, Salvatore Gazze, Franziska Knodel, Olivier Proux, Alexandra T. Gourlan, Philipp Rathert, Sylvain Bohic, Deyarina Gonzalez, Lewis W. Francis, Laurent Charlet, R. Steven Conlan
Summary: At physiological levels, selenium is involved in redox reactions and has potential anti-cancer effects. Selenium nanoparticles, coated with serum albumin or chitosan, enhance biocompatibility and bioavailability. In this study, selenium nanoparticles were found to regulate histone methylation in ovarian cancer cell models, leading to increased histone methylation at specific sites. This novel role of selenium in histone methylation is mediated by a decrease in S-adenosylhomocysteine, an endogenous inhibitor of lysine methyltransferases. These findings broaden our understanding of the action of selenium nanoparticles in cancer therapy and other applications.
Article
Microbiology
Amelie De Vallee, Jean-William Dupuy, Christine Moriscot, Benoit Gallet, Solene Vanderperre, Gaetan Guignard, Christine Rascle, Glen Calvar, Bastien Malbert, Francois-Xavier Gillet, Cindy Dieryckx, Mathias Choquer, Vincent Girard, Nathalie Poussereau, Christophe Bruel
Summary: This study identified and characterized extracellular vesicles produced by the plant necrotroph Botrytis cinerea. These vesicles contain proteins involved in various cellular processes and have the ability to target different cells. The study also demonstrated a positive effect of these vesicles on the growth of B. cinerea.
Article
Chemistry, Multidisciplinary
Enrico Falcone, Germano Nobili, Michael Okafor, Olivier Proux, Giancarlo Rossi, Silvia Morante, Peter Faller, Francesco Stellato
Summary: The redox activity of Cu ions bound to the amyloid-beta peptide is implicated in oxidative stress in Alzheimer's disease. A low-populated intermediate state, capable of binding Cu in both oxidation states, has been proposed to explain the efficient redox cycling between Cu(II)-Aβ and Cu(I)-Aβ resting states. By using X-ray induced photoreduction and thermal relaxation, a partially reduced Cu-Aβ species different from the resting states was trapped and characterized by X-ray Absorption Spectroscopy (XAS). This approach provides the first direct spectroscopic characterization of an intermediate state.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jerome Rose, Perrine Chaurand, Cedric Dentant, Bernard Angeletti, Daniel Borschneck, Isabelle Kieffer, Olivier Proux, Richard Bonet, Melanie Auffan, Clement Levard, Till Fehlauer, Blanche Collin, Emmanuel Doelsch
Summary: Inorganic contaminants released from mining activities can have a negative impact on the surrounding ecosystems. Sulfuric acid, produced after the oxidation of primary sulfide minerals in ores, plays a significant role in the release of metals. However, secondary metal sulfates can form and control the fate of metals. Thallium (Tl), for example, can be trapped by Tl-jarosite and dorallcharite, secondary minerals found in Tl-rich sulfide deposits and mining areas. The study of the long-term behavior of Tl in soils at the Jas Roux site in France has provided new insights into the biogeochemical cycle of this metal.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Review
Biochemistry & Molecular Biology
Anne Marie Aucour, Geraldine Sarret, Hester Blommaert, Matthias Wiggenhauser
Summary: Excess and limited trace metals in soils and plants can hinder crop yields and pose risks to the environment and human health. The combination of X-ray absorption spectroscopy (XAS) with isotope analyses is an emerging approach that can improve understanding of metal speciation and dynamics in soil-plant systems. This approach shows promise in providing insights into metal availability in soils and metal uptake and translocation in plants, although further research and methodological advancements are needed.
Article
Chemistry, Multidisciplinary
Caroline Bissardon, Olivier Proux, Salvatore Andrea Gazze, Odile Filhol, Benoit Toubhans, Lucie Sauzeat, Sylvain Bouchet, Aled R. Lewis, Thierry Maffeis, Jean-Louis Hazemann, Sam Bayat, Peter Cloetens, R. Steven Conlan, Laurent Charlet, Sylvain Bohic
Summary: This study investigated the effects of sub-toxic concentrations of functionalized selenium nanoparticles on prostate cancer cells and their intracellular localization and fate. The results showed that monodisperse selenium nanoparticles capped with bovine serum albumin could slow down the migration capacity of aggressive prostate cancer cells compared to polydisperse selenium nanoparticles capped with chitosan. The nanoparticles were found to interact with mitochondria in the cells. These findings provide new insight for further research on the cytotoxic mechanisms of selenium nanoparticles.
Article
Chemistry, Physical
Maria Diaz-Lopez, Philip A. Chater, Olivier Proux, Yves Joly, Jean-Louis Hazemann, Pierre Bordet, Valerie Pralong
Summary: This study investigates the structure and charge evolution of Li1.1Mn0.7Ti0.2O2 Li-excess rock salt cathode, revealing that the long-range cation disordered rock salt can form locally ordered layered nanodomains during electrochemical cycling, leading to capacity fade.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)