Pub Date : 2025-03-18DOI: 10.1016/j.jhazmat.2025.137969
Weidong Qian, Jiaxing Lu, Ting Wang, Qiming Liu, Na Liu, Si Chen, Yongdong Li
The recent designation of Cryptococcus neoformans as a critical-priority fungal pathogen by the World Health Organization highlights the imperative need for novel antifungal agents with distinct mechanisms of action. This study elucidates the novel ferroptotic pathway underlying C. neoformans-induced cell death in Caenorhabditis elegans and investigates the therapeutic potential of isobavachalcone (IBC) through comprehensive evaluation of core biochemical markers: total glutathione (GSH), malondialdehyde, ferrous iron content, and lipid reactive oxygen species (ROS). Integrated transcriptomic analysis via RNA-seq and subsequent RT-qPCR validation revealed critical gene expression patterns associated with ferroptotic regulation. Our findings demonstrate that C. neoformans infection initiates ferroptosis in C. elegans through iron-dependent lipid peroxidation cascades. Remarkably, IBC administration conferred significant protection against fungal-induced ferroptosis by restoring redox homeostasis-evidenced by elevated GSH levels, attenuated ROS accumulation, and decreased ferrous iron content. Mechanistic investigations identified IBC-mediated upregulation of NRF2 and GSH biosynthesis genes, coupled with suppression of GPX-1 activity. These coordinated effects disrupted the iron-ROS amplification loop through modulation of the GSH-GPX-1 axis, ultimately extending host lifespan in C. neoformans-challenged models. Our results position IBC as a ferroptosis inhibitor with dual antioxidant and iron-chelating properties, offering a therapeutic strategy against cryptococcal infections through targeting of evolutionary conserved cell death pathways.
{"title":"Isobavachalcone confers protection against Cryptococcus neoformans-induced ferroptosis in Caenorhabditis elegans via lifespan extension and GSH-GPX-1 axis modulation","authors":"Weidong Qian, Jiaxing Lu, Ting Wang, Qiming Liu, Na Liu, Si Chen, Yongdong Li","doi":"10.1016/j.jhazmat.2025.137969","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137969","url":null,"abstract":"The recent designation of <em>Cryptococcus neoformans</em> as a critical-priority fungal pathogen by the World Health Organization highlights the imperative need for novel antifungal agents with distinct mechanisms of action. This study elucidates the novel ferroptotic pathway underlying <em>C. neoformans</em>-induced cell death in <em>Caenorhabditis elegans</em> and investigates the therapeutic potential of isobavachalcone (IBC) through comprehensive evaluation of core biochemical markers: total glutathione (GSH), malondialdehyde, ferrous iron content, and lipid reactive oxygen species (ROS). Integrated transcriptomic analysis via RNA-seq and subsequent RT-qPCR validation revealed critical gene expression patterns associated with ferroptotic regulation. Our findings demonstrate that <em>C. neoformans</em> infection initiates ferroptosis in <em>C. elegans</em> through iron-dependent lipid peroxidation cascades. Remarkably, IBC administration conferred significant protection against fungal-induced ferroptosis by restoring redox homeostasis-evidenced by elevated GSH levels, attenuated ROS accumulation, and decreased ferrous iron content. Mechanistic investigations identified IBC-mediated upregulation of NRF2 and GSH biosynthesis genes, coupled with suppression of GPX-1 activity. These coordinated effects disrupted the iron-ROS amplification loop through modulation of the GSH-GPX-1 axis, ultimately extending host lifespan in <em>C. neoformans</em>-challenged models. Our results position IBC as a ferroptosis inhibitor with dual antioxidant and iron-chelating properties, offering a therapeutic strategy against cryptococcal infections through targeting of evolutionary conserved cell death pathways.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"57 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-18DOI: 10.1016/j.jhazmat.2025.137974
Valentina Poli , Maria Cristina Lavagnolo , Marina Basaglia , Tiziano Bonato , Silvia Zanatta , Michele Modesti
The biodegradability of bioplastics in natural environments remains a highly debated topic within the scientific community. It is assessed primarily using the compostability standard EN 13432, although this, however, does not accurately reflect degradation processes occurring in aquatic environments. To verify the biodegradability of polylactic acid (PLA) in freshwater, two tests, differing only in the inoculum sampling location, were conducted according to EN ISO 14851:2019, measuring oxygen demand. However, to gain a comprehensive understanding, bioplastics biodegradation should be thoroughly investigated at multiple levels beyond oxygen consumption. Additional analyses, including morphological and thermal characterization of polymers and assessment of inoculum characteristics, are fundamental in providing valuable insights into degradation mechanisms. Biodegradability tests revealed low biodegradation rates (44.04 % and 23.38 %), with no evident weight change in PLA pellets during testing. Analytical techniques (FT-IR, DSC, SEM) indicated negligible visual or structural modifications between virgin and tested pellets. Therefore, under conditions specified by the standard PLA pellets did not undergo significant biodegradation in freshwater. Discrepancies between tests α and β suggested variability due to inoculum quality. A series of challenges persist when implementing this standard, including the lack of a threshold for use in clearly classifying a bioplastic as “biodegradable” and flexibility in selecting process parameters (e.g., test material shape and size, duration, temperature, inoculum percentage). Accordingly, to facilitate a reliable assessment of the biodegradability of bioplastics in freshwater, the EN ISO 14851:2019 standard should be amended and updated.
{"title":"Assessment of the biodegradability of polylactic acid (PLA) in freshwater using EN ISO 14851:2019: Challenges and outcomes","authors":"Valentina Poli , Maria Cristina Lavagnolo , Marina Basaglia , Tiziano Bonato , Silvia Zanatta , Michele Modesti","doi":"10.1016/j.jhazmat.2025.137974","DOIUrl":"10.1016/j.jhazmat.2025.137974","url":null,"abstract":"<div><div>The biodegradability of bioplastics in natural environments remains a highly debated topic within the scientific community. It is assessed primarily using the compostability standard EN 13432, although this, however, does not accurately reflect degradation processes occurring in aquatic environments. To verify the biodegradability of polylactic acid (PLA) in freshwater, two tests, differing only in the inoculum sampling location, were conducted according to EN ISO 14851:2019, measuring oxygen demand. However, to gain a comprehensive understanding, bioplastics biodegradation should be thoroughly investigated at multiple levels beyond oxygen consumption. Additional analyses, including morphological and thermal characterization of polymers and assessment of inoculum characteristics, are fundamental in providing valuable insights into degradation mechanisms. Biodegradability tests revealed low biodegradation rates (44.04 % and 23.38 %), with no evident weight change in PLA pellets during testing. Analytical techniques (FT-IR, DSC, SEM) indicated negligible visual or structural modifications between virgin and tested pellets. Therefore, under conditions specified by the standard PLA pellets did not undergo significant biodegradation in freshwater. Discrepancies between tests α and β suggested variability due to inoculum quality. A series of challenges persist when implementing this standard, including the lack of a threshold for use in clearly classifying a bioplastic as “biodegradable” and flexibility in selecting process parameters (e.g., test material shape and size, duration, temperature, inoculum percentage). Accordingly, to facilitate a reliable assessment of the biodegradability of bioplastics in freshwater, the EN ISO 14851:2019 standard should be amended and updated.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"491 ","pages":"Article 137974"},"PeriodicalIF":12.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-18DOI: 10.1016/j.jhazmat.2025.137990
Steffen Amann, Falk Wagemann, Sebastian Buchinger, Christian Dietrich, Arne Wick, Amir Rahimi, Frank Schmidt-Döhl, Thomas A. Ternes
We investigated the effects of environmentally relevant sulfate concentrations on the leaching behavior of certain metalloids in hardened cement pastes. In our study, different cement pastes made of Portland cement (CEM I), blast furnace slag cement (CEM III/A) and a sulfate-resistant cement (CEM I SR0) were cured for 28 days and leached with ultrapure water and with sulfate-containing water. The released concentrations of the most metals and metalloids were independent of the presence of environmentally relevant sulfate concentrations below 1 µg/L or even below the limit of quantification (LOQ). However, the contact to sulfate-containing water led to an increased chromium release from CEM I, compared to leaching in ultrapure water. Under the same conditions an increased release of vanadium was observed from CEM III/A. A micronucleus test of the selected eluates revealed genotoxic effects which can be very likely attributed to the presence of vanadate. We were further able to connect the different leaching behavior of cement in sulfate-containing water compared to ultrapure water to changes of the specific surface area of the hardened cement pastes.
{"title":"Impact of sulfate on the release of genotoxic metals from hardened cement pastes","authors":"Steffen Amann, Falk Wagemann, Sebastian Buchinger, Christian Dietrich, Arne Wick, Amir Rahimi, Frank Schmidt-Döhl, Thomas A. Ternes","doi":"10.1016/j.jhazmat.2025.137990","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137990","url":null,"abstract":"We investigated the effects of environmentally relevant sulfate concentrations on the leaching behavior of certain metalloids in hardened cement pastes. In our study, different cement pastes made of Portland cement (CEM I), blast furnace slag cement (CEM III/A) and a sulfate-resistant cement (CEM I SR0) were cured for 28 days and leached with ultrapure water and with sulfate-containing water. The released concentrations of the most metals and metalloids were independent of the presence of environmentally relevant sulfate concentrations below 1<!-- --> <!-- -->µg/L or even below the limit of quantification (LOQ). However, the contact to sulfate-containing water led to an increased chromium release from CEM I, compared to leaching in ultrapure water. Under the same conditions an increased release of vanadium was observed from CEM III/A. A micronucleus test of the selected eluates revealed genotoxic effects which can be very likely attributed to the presence of vanadate. We were further able to connect the different leaching behavior of cement in sulfate-containing water compared to ultrapure water to changes of the specific surface area of the hardened cement pastes.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"43 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thermal hydrolysis is an effective technique for enhancing the solubilization of sewage sludge and improving the safety of biosolids for disposal or reuse. However, the release of various dissolved organic matter (DOM) at different TH temperatures, along with their properties that may influence intrinsic photochemical characteristics, remains poorly understood. This study investigates the temperature-dependent molecular evolution of sludge DOM (90–220°C) and its impact on antibiotic photodegradation. FT-ICR MS and ETC analysis were employed to explore the structural evolution, redox properties, and reactive oxygen species generation of DOM. The results reveal that 150°C represents a critical threshold for optimal photochemical activity. At this temperature, proteinaceous substances undergo decarboxylation and denitration, reducing polar functional groups and enhancing electron donor capacity (30.424 μmol e⁻ (mg C)⁻¹). Simultaneously, this molecular transformation facilitates the generation of excited triplet states (³DOM⁎) and significantly enhances the production efficiency of key reactive oxygen species (ROS), such as ¹O₂ and ·O2-. These properties significantly improved sulfamethoxazole photodegradation (kobs=0.2587 h-1). Below 150°C, limited DOM release and reduced ROS production hinder photochemical activity, whereas above 180°C, the increased aromaticity and molecular stability of humic-like substances inhibited photochemical reactivity due to light-shielding effects. This study offers a theoretical basis for optimizing sludge thermal hydrolysis conditions and links DOM molecular structures to the fate of dissolved antibiotics during photodegradation.
{"title":"Thermal Hydrolysis-Induced Molecular Transformations in Sludge: Implications for Photochemical Reactivity and Dissolved Antibiotics Photodissipation","authors":"Haifeng Wen, Xin Wang, Xinchao Zhang, Yiyang He, Lin Gu, Hanlin Zhang, Peize Wu","doi":"10.1016/j.jhazmat.2025.137985","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137985","url":null,"abstract":"Thermal hydrolysis is an effective technique for enhancing the solubilization of sewage sludge and improving the safety of biosolids for disposal or reuse. However, the release of various dissolved organic matter (DOM) at different TH temperatures, along with their properties that may influence intrinsic photochemical characteristics, remains poorly understood. This study investigates the temperature-dependent molecular evolution of sludge DOM (90–220°C) and its impact on antibiotic photodegradation. FT-ICR MS and ETC analysis were employed to explore the structural evolution, redox properties, and reactive oxygen species generation of DOM. The results reveal that 150°C represents a critical threshold for optimal photochemical activity. At this temperature, proteinaceous substances undergo decarboxylation and denitration, reducing polar functional groups and enhancing electron donor capacity (30.424 μmol e⁻ (mg C)⁻¹). Simultaneously, this molecular transformation facilitates the generation of excited triplet states (³DOM⁎) and significantly enhances the production efficiency of key reactive oxygen species (ROS), such as ¹O₂ and ·O<sub>2</sub><sup>-</sup>. These properties significantly improved sulfamethoxazole photodegradation (kobs=0.2587<!-- --> <!-- -->h<sup>-1</sup>). Below 150°C, limited DOM release and reduced ROS production hinder photochemical activity, whereas above 180°C, the increased aromaticity and molecular stability of humic-like substances inhibited photochemical reactivity due to light-shielding effects. This study offers a theoretical basis for optimizing sludge thermal hydrolysis conditions and links DOM molecular structures to the fate of dissolved antibiotics during photodegradation.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"19 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As biodegradable food contact materials (FCMs), polylactic acid (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) may release oligomers into food and raise potential health concerns. This study investigated the migration characteristics and digestive behaviors of oligomers by combining food simulation migration experiments, an in vitro digestion model, and high-resolution mass spectrometry. Moreover, the effects of the migrants from both materials on gut microbiota were evaluated following in vitro colonic fermentation for 48 h. The results indicated that 51 PLA oligomers and 45 PBAT oligomers were released into food simulants, with the migration increasing with ethanol concentration. Cyclic oligomers exhibited higher migration than linear oligomers. During digestion, PLA oligomers were almost completely degraded, whereas PBAT oligomers increased, additionally, cyclic oligomers were more susceptible to degradation. Migrants from both materials exhibited cytotoxicity effect on Caco-2 cells, disrupted the gut microbiota homeostasis, affecting multiple metabolic pathways. Especially, the migrants from PBAT inhibited the production of acetic, butyric, and isobutyric acids, while reducing the degradation of propionic acid. Overall, PBAT may pose a greater hazard than PLA. In conclusion, based on a new perspective of “lifecycle”, this systematic study will contribute to a deeper understanding of the safety of PLA and PBAT when utilized as FCMs.
{"title":"Chemical Migration, Digestive Behaviors and Effect on Gut Microbiota of PLA and PBAT Oligomers","authors":"Guowei Ma, Xiaomeng Gao, Yuting Chen, Hanfei Li, Yiling Cui, Peixue Guo, Tingting Zhao, Feng Di","doi":"10.1016/j.jhazmat.2025.137988","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137988","url":null,"abstract":"As biodegradable food contact materials (FCMs), polylactic acid (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) may release oligomers into food and raise potential health concerns. This study investigated the migration characteristics and digestive behaviors of oligomers by combining food simulation migration experiments, an <em>in vitro</em> digestion model, and high-resolution mass spectrometry. Moreover, the effects of the migrants from both materials on gut microbiota were evaluated following <em>in vitro</em> colonic fermentation for 48<!-- --> <!-- -->h. The results indicated that 51 PLA oligomers and 45 PBAT oligomers were released into food simulants, with the migration increasing with ethanol concentration. Cyclic oligomers exhibited higher migration than linear oligomers. During digestion, PLA oligomers were almost completely degraded, whereas PBAT oligomers increased, additionally, cyclic oligomers were more susceptible to degradation. Migrants from both materials exhibited cytotoxicity effect on Caco-2 cells, disrupted the gut microbiota homeostasis, affecting multiple metabolic pathways. Especially, the migrants from PBAT inhibited the production of acetic, butyric, and isobutyric acids, while reducing the degradation of propionic acid. Overall, PBAT may pose a greater hazard than PLA. In conclusion, based on a new perspective of “lifecycle”, this systematic study will contribute to a deeper understanding of the safety of PLA and PBAT when utilized as FCMs.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"25 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-18DOI: 10.1016/j.jhazmat.2025.137964
Jie Tang, Tingting Cai, Na Li, Zexi Chen, Jintong Liu, Hong Yang
The extensive application of organophosphorus pesticides (OPs), in agricultural pest management has led to pervasive residue accumulation, posing substantial risks to the environment and human health. This study presented an environmentally friendly approach for chlorpyrifos detection using a Mn(III)-blocked aggregation-induced emission (AIE)-based metal-organic framework (MOF) nanosystem. Attributed to the inhibitory effect of chlorpyrifos on ascorbate oxidase (AAox), ascorbic acid was abundant with the restriction of oxidation by AAox and reduced Mn(III) in MOF. The redox reaction prompted the collapse of MOF and the release of AIEgens. Free AIEgens reassembled into emissive aggregates in the aqueous solution with significantly enhanced fluorescence signal through AIE. The enhanced luminescence enabled the sensitive detection of chlorpyrifos with a detection limit of 3.79 ng mL-1, as confirmed by recovery tests with food samples. The efficacy of sensor in tracking chlorpyrifos bioaccumulation in wheat underscored the potential for practical application in the residue monitoring within crops. This work introduced a highly sensitive AIE-MOF-based fluorescence sensing and environmentally friendly method for chlorpyrifos detection in crops, which was crucial for ensuring food and environmental safety.
{"title":"Target-induced dissociation of AIE metal-organic framework for fluorescence-enhanced determination of the chlorpyrifos bioaccumulation in wheat by employing Mn (III) as the active center","authors":"Jie Tang, Tingting Cai, Na Li, Zexi Chen, Jintong Liu, Hong Yang","doi":"10.1016/j.jhazmat.2025.137964","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137964","url":null,"abstract":"The extensive application of organophosphorus pesticides (OPs), in agricultural pest management has led to pervasive residue accumulation, posing substantial risks to the environment and human health. This study presented an environmentally friendly approach for chlorpyrifos detection using a Mn(III)-blocked aggregation-induced emission (AIE)-based metal-organic framework (MOF) nanosystem. Attributed to the inhibitory effect of chlorpyrifos on ascorbate oxidase (AAox), ascorbic acid was abundant with the restriction of oxidation by AAox and reduced Mn(III) in MOF. The redox reaction prompted the collapse of MOF and the release of AIEgens. Free AIEgens reassembled into emissive aggregates in the aqueous solution with significantly enhanced fluorescence signal through AIE. The enhanced luminescence enabled the sensitive detection of chlorpyrifos with a detection limit of 3.79<!-- --> <!-- -->ng<!-- --> <!-- -->mL<sup>-1</sup>, as confirmed by recovery tests with food samples. The efficacy of sensor in tracking chlorpyrifos bioaccumulation in wheat underscored the potential for practical application in the residue monitoring within crops. This work introduced a highly sensitive AIE-MOF-based fluorescence sensing and environmentally friendly method for chlorpyrifos detection in crops, which was crucial for ensuring food and environmental safety.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"126 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-18DOI: 10.1016/j.jhazmat.2025.138002
Zhou Jiang , Wenjie Fang , Yongguang Jiang , Yidan Hu , Yiran Dong , Ping Li , Liang Shi
As one of the most abundant microorganisms on Earth, Bathyarchaeia with diverse abilities to degrade complex organic carbon play a vital role in the global carbon cycle. However, the role of Bathyarchaeia in arsenic (As) metabolism and their contribution to As mobilization in aquifers remain unclear. In this study, we recovered 15 Bathyarchaeota metagenome-assembled genomes (MAGs) from metagenomes of borehole sediments in the Jianghan Plain (JHP), China. Together with 374 representative Bathyarchaeia MAGs from public databases, six As metabolism genes i.e. arrA, arsR, arsA, arsB, arsC (Trx) and arsM were identified, accounting for 4.4, 47.6, 20.3, 38.3, 37.5 and 49.4 % of total Bathyarchaeia MAGs, respectively. Heterologous expression of multiple arsC and arsM genes of Bathyarchaeia MAGs obtained from JHP sediments validated their abilities for As(V) reduction and As(III) methylation at environmentally relevant As concentration. These results indicate that in addition to providing bioavailable carbon sources for other microbial functional populations, Bathyarchaeia directly participate in As mobilization in the JHP aquifer via As(V) reduction and As(III) methylation. The diversified distribution of arsC and arsM in the class Bathyarchaeia suggests that Bathyarchaeia may contribute to As cycling in other As-rich environments, such as hot spring, saline lakes, marine hydrothermal sediments and soils.
{"title":"Arsenic mobilization by Bathyarchaeia in subsurface sediments at the Jianghan Plain, China","authors":"Zhou Jiang , Wenjie Fang , Yongguang Jiang , Yidan Hu , Yiran Dong , Ping Li , Liang Shi","doi":"10.1016/j.jhazmat.2025.138002","DOIUrl":"10.1016/j.jhazmat.2025.138002","url":null,"abstract":"<div><div>As one of the most abundant microorganisms on Earth, <em>Bathyarchaeia</em> with diverse abilities to degrade complex organic carbon play a vital role in the global carbon cycle. However, the role of <em>Bathyarchaeia</em> in arsenic (As) metabolism and their contribution to As mobilization in aquifers remain unclear. In this study, we recovered 15 <em>Bathyarchaeota</em> metagenome-assembled genomes (MAGs) from metagenomes of borehole sediments in the Jianghan Plain (JHP), China. Together with 374 representative <em>Bathyarchaeia</em> MAGs from public databases, six As metabolism genes i.e. <em>arrA</em>, <em>arsR</em>, <em>arsA</em>, <em>arsB</em>, <em>arsC</em> (Trx) and <em>arsM</em> were identified, accounting for 4.4, 47.6, 20.3, 38.3, 37.5 and 49.4 % of total <em>Bathyarchaeia</em> MAGs, respectively. Heterologous expression of multiple <em>arsC</em> and <em>arsM</em> genes of <em>Bathyarchaeia</em> MAGs obtained from JHP sediments validated their abilities for As(V) reduction and As(III) methylation at environmentally relevant As concentration. These results indicate that in addition to providing bioavailable carbon sources for other microbial functional populations, <em>Bathyarchaeia</em> directly participate in As mobilization in the JHP aquifer via As(V) reduction and As(III) methylation. The diversified distribution of <em>arsC</em> and <em>arsM</em> in the class <em>Bathyarchaeia</em> suggests that <em>Bathyarchaeia</em> may contribute to As cycling in other As-rich environments, such as hot spring, saline lakes, marine hydrothermal sediments and soils.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"491 ","pages":"Article 138002"},"PeriodicalIF":12.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-18DOI: 10.1016/j.jhazmat.2025.137962
Frank Menger, Mara Römerscheid, Stefan Lips, Ole Klein, Deedar Nabi, Jürgen Gandrass, Hanna Joerss, Katrin Wendt-Potthoff, Daria Bedulina, Tristan Zimmermann, Mechthild Schmitt-Jansen, Carolin Huber, Alexander Böhme, Nadin Ulrich, Aaron J. Beck, Daniel Pröfrock, Eric P. Achterberg, Annika Jahnke, Lars Hildebrandt
The authors regret to inform, that there was an error in the author list of the article. Frank Menger and Mara Römerscheid share the first authorship of this manuscript. Additionally, the affiliation of Annika Jahnke and Lars Hildebrandt were mixed up in the footnotes * and * *. The correct list of authors should state:
{"title":"Erratum to “Screening the release of chemicals and microplastic particles from diverse plastic consumer products into water under accelerated UV weathering conditions” [J Hazard Mater 477 (2024) 135256]","authors":"Frank Menger, Mara Römerscheid, Stefan Lips, Ole Klein, Deedar Nabi, Jürgen Gandrass, Hanna Joerss, Katrin Wendt-Potthoff, Daria Bedulina, Tristan Zimmermann, Mechthild Schmitt-Jansen, Carolin Huber, Alexander Böhme, Nadin Ulrich, Aaron J. Beck, Daniel Pröfrock, Eric P. Achterberg, Annika Jahnke, Lars Hildebrandt","doi":"10.1016/j.jhazmat.2025.137962","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137962","url":null,"abstract":"The authors regret to inform, that there was an error in the author list of the article. Frank Menger and Mara Römerscheid share the first authorship of this manuscript. Additionally, the affiliation of Annika Jahnke and Lars Hildebrandt were mixed up in the footnotes * and * *. The correct list of authors should state:","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"19 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Although cadmium (Cd) hyperaccumulators have been widely used in phytoremediation of Cd-contaminated soils, the relationship between soil phosphorus (P) uptake and Cd accumulation during phytoremediation remains unclear. In this study, a phosphate-solubilizing bacterium (PSB), Enterobacter sp., and the Cd hyperaccumulator B. pilosa L. were selected to address this knowledge gap. Our results show that Enterobacter sp. inoculation enhances P cycling processes in the rhizosphere of B. pilosa L., resulting in an increase in soil available phosphorus (AP), by 16.2% to 84.3% in low-contaminated soil and by 17.6% to 64.8% in high-contaminated soil. Inorganic P solubilization was the primary process driving the increase in AP content, contributing the most to soil P cycling. Moreover, Enterobacter sp. inoculation significantly promoted the growth of B. pilosa L., boosting total phosphorus, phospholipids, primary metabolic phosphorus, and Cd concentrations in plant tissues. Notably, a strong positive correlation was observed between soil AP and Cd concentrations in plant tissues. P-functional microbes in the rhizosphere, encoding genes such as gcd, ppa, and ppx-gppA, predominantly enhance P bioavailability in soils. Furthermore, in P-deficient and heavily contaminated soils, Proteobacteria replaced Actinobacteria as the predominant hosts for key genes involved in soil P cycling. This study provides valuable insights into the critical link between P availability and Cd accumulation, emphasizing the role of P cycling in enhancing Cd accumulation during phytoremediation mediated by PSB.
{"title":"Phosphate-solubilizing bacteria facilitate rhizospheric processes of Bidens pilosa L. in the phytoremediation of cadmium-contaminated soil: Link between phosphorus availability and cadmium accumulation","authors":"Yi Li, Shiyu Luo, Yiyun Fu, Chijian Tang, Xiaoxiao Qin, Dongyi Shi, Wei Lan, Yingxuan Tang, Fangming Yu","doi":"10.1016/j.jhazmat.2025.137997","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137997","url":null,"abstract":"Although cadmium (Cd) hyperaccumulators have been widely used in phytoremediation of Cd-contaminated soils, the relationship between soil phosphorus (P) uptake and Cd accumulation during phytoremediation remains unclear. In this study, a phosphate-solubilizing bacterium (PSB), <em>Enterobacter</em> sp., and the Cd hyperaccumulator <em>B. pilosa</em> L. were selected to address this knowledge gap. Our results show that <em>Enterobacter</em> sp. inoculation enhances P cycling processes in the rhizosphere of <em>B. pilosa</em> L., resulting in an increase in soil available phosphorus (AP), by 16.2% to 84.3% in low-contaminated soil and by 17.6% to 64.8% in high-contaminated soil. Inorganic P solubilization was the primary process driving the increase in AP content, contributing the most to soil P cycling. Moreover, <em>Enterobacter</em> sp. inoculation significantly promoted the growth of <em>B. pilosa</em> L., boosting total phosphorus, phospholipids, primary metabolic phosphorus, and Cd concentrations in plant tissues. Notably, a strong positive correlation was observed between soil AP and Cd concentrations in plant tissues. P-functional microbes in the rhizosphere, encoding genes such as <em>gcd</em>, <em>ppa</em>, and <em>ppx-gppA</em>, predominantly enhance P bioavailability in soils. Furthermore, in P-deficient and heavily contaminated soils, Proteobacteria replaced Actinobacteria as the predominant hosts for key genes involved in soil P cycling. This study provides valuable insights into the critical link between P availability and Cd accumulation, emphasizing the role of P cycling in enhancing Cd accumulation during phytoremediation mediated by PSB.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"34 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Benzene emissions from industrial processes are a significant target for catalytic oxidation. Additionally, VOC emissions often contain heteroatoms such as chlorine, which can deactivate noble metal-based catalysts. The development of a cost-effective, environmentally friendly noble metal-based catalyst that resists chlorine poisoning is crucial. While Ag-based catalysts offer advantages in terms of cost and activity, Ag0 nanoparticles as active centers can be easily poisoned by chlorine. To address this challenge, we introduced a ternary catalyst of Ag-MnOx/CeO2, which combines support modification with MnO2 and Ag active center modification to Ag2O. The synergistic interaction among these components promotes the formation of Ag2O species, significantly enhancing the benzene oxidation performance. Moreover, the combination of Ag2O and MnO2 imparts strong resistance to chlorobenzene poisoning. Through characterization, performance testing, and theoretical analysis, Ag-MnOx/CeO2 demonstrated superior benzene oxidation and chlorine resistance compared with Ag/CeO2 catalysts. This study provides a promising avenue for developing more efficient and sustainable catalysts to address the pressing issue of VOC removal and mitigate chlorine poisoning in noble metal catalysts.
{"title":"Synergistic Effects of Ag-MnOx/CeO2 for Improved Benzene Oxidation and Chlorine Tolerance","authors":"Lingyun Guo, Xuehong Zhang, Wenjie Xia, Lijuan Liu, Xiaowei Zhang, Cibin Xu, Zhiwei Huang, Xiaomin Wu, Huawang Zhao, Guohua Jing, Huazhen Shen","doi":"10.1016/j.jhazmat.2025.138001","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138001","url":null,"abstract":"Benzene emissions from industrial processes are a significant target for catalytic oxidation. Additionally, VOC emissions often contain heteroatoms such as chlorine, which can deactivate noble metal-based catalysts. The development of a cost-effective, environmentally friendly noble metal-based catalyst that resists chlorine poisoning is crucial. While Ag-based catalysts offer advantages in terms of cost and activity, Ag<sup>0</sup> nanoparticles as active centers can be easily poisoned by chlorine. To address this challenge, we introduced a ternary catalyst of Ag-MnO<sub>x</sub>/CeO<sub>2</sub>, which combines support modification with MnO<sub>2</sub> and Ag active center modification to Ag<sub>2</sub>O. The synergistic interaction among these components promotes the formation of Ag<sub>2</sub>O species, significantly enhancing the benzene oxidation performance. Moreover, the combination of Ag<sub>2</sub>O and MnO<sub>2</sub> imparts strong resistance to chlorobenzene poisoning. Through characterization, performance testing, and theoretical analysis, Ag-MnO<sub>x</sub>/CeO<sub>2</sub> demonstrated superior benzene oxidation and chlorine resistance compared with Ag/CeO<sub>2</sub> catalysts. This study provides a promising avenue for developing more efficient and sustainable catalysts to address the pressing issue of VOC removal and mitigate chlorine poisoning in noble metal catalysts.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"14 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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