Chemosphere最新文献_第6页

Seasonal dynamics and pesticide impact on gut microbiome in Amynthas gracilis earthworms: A comparative study across agricultural landscapes assessed by 16S rRNA amplicon-based sequencing 季节性动态和农药对羊草蚯蚓肠道微生物组的影响：基于16S rRNA扩增子测序的农业景观比较研究

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-27 DOI: 10.1016/j.chemosphere.2025.144660

Gabriel Brenes-Bravo , Frank Solano-Campos , Clemens Ruepert , Freylan Mena

{"title":"Seasonal dynamics and pesticide impact on gut microbiome in Amynthas gracilis earthworms: A comparative study across agricultural landscapes assessed by 16S rRNA amplicon-based sequencing","authors":"Gabriel Brenes-Bravo , Frank Solano-Campos , Clemens Ruepert , Freylan Mena","doi":"10.1016/j.chemosphere.2025.144660","DOIUrl":"10.1016/j.chemosphere.2025.144660","url":null,"abstract":"<div><div>The use of pesticides in agriculture can affect the biodiversity of soil ecosystems and interfere with the ecological services they provide. The gut microbiome of earthworms serves as a bioindicator for changes in diversity within one of the most representative groups of soil macrofauna. In this study, we defined a gradient of soil and pesticide use regimes within a horticultural area, including conventional management, good agricultural practices, organic production and forest. Earthworms (<em>A. gracilis</em>) from these four conditions were sampled, and their microbiomes were assessed by sequencing the V4 region from the 16S rRNA gene. Comparison of ASVs indicated the presence of 142 bacterial genera among all the samples, with Actinobacteriota, Proteobacteria, Firmicutes and Bacteroidota being dominant phyla. Simpson’s diversity index revealed diminished biodiversity in the gut microbiomes of earthworms from conventionally managed soil, correlating negatively with the presence of the insecticide chlorpyrifos. Furthermore, a seasonal shift in the dominance of bacterial taxa was observed between dry and rainy seasons. These shifts were evident in the gut microbiome of organisms from organically managed and good practices soils but not in the conventional site. Our results demonstrate that earthworm’s gut microbiome serves as a responsive bioindicator for biodiversity changes in agricultural landscapes, suggesting that key features of the microbial community can be altered by pesticide exposure.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"387 ","pages":"Article 144660"},"PeriodicalIF":8.1,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Retraction notice to “Serum level of PCBs and OCPs and leukocyte telomere length among adults in Tehran, Iran” [Chemosphere 248, June 2020, 126092] “北京市成人血清多氯联苯和氯代酚含量与白细胞端粒长度的关系”[j].环境科学学报，2020,24(6):126092。

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-27 DOI: 10.1016/j.chemosphere.2025.144635

Behrooz Karimi , Ramin Nabizadeh Nodehi , Masud Yunesian

引用次数: 0

Exploring anaerobic fermentation stability against a temperature perturbation: process indicators and recovery strategies 探索厌氧发酵稳定性对温度扰动：过程指标和恢复策略

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-27 DOI: 10.1016/j.chemosphere.2025.144669

Manuel João Afecto Gonçalves , Cristina González-Fernández , Silvia Greses

{"title":"Exploring anaerobic fermentation stability against a temperature perturbation: process indicators and recovery strategies","authors":"Manuel João Afecto Gonçalves , Cristina González-Fernández , Silvia Greses","doi":"10.1016/j.chemosphere.2025.144669","DOIUrl":"10.1016/j.chemosphere.2025.144669","url":null,"abstract":"<div><div>Anaerobic fermentation (AF) efficiency is highly influenced by temperature, and operational disruptions in industrial settings can lead to severe process failure. In this study, AF of food wastes (FWs) was subjected to a temperature drop from 25 °C to 15 °C to elucidate AF behaviour and proper recovery strategies. The temperature decrease caused a marked decline in volatile fatty acids (VFAs) production from 23.7 ± 0.2 to 6.1 ± 0.2 g/L, reducing the bioconversion yields from 42.8 ± 0.4 to 8.9 ± 0.3 %. VFAs-producing pathways shifted toward lactic (HLact, 13.3 ± 0.1 g/L) and succinic (HSu, 4.0 ± 0.2 g/L) acids, indicating partial inhibition of the acidogenesis step. This shift was correlated with the enrichment with HLact-producing bacteria (LAB), namely <em>Enterococcus</em>, <em>Lactobacillus</em>, and <em>Lactococcus</em>. To recover VFAs production levels, two strategies were applied: (i) natural recovery by re-establishing the original operational conditions to 25 °C and (ii) a combined approach of re-establishing the operational conditions plus partial re-inoculation of the fermentation broth. While both strategies restored VFAs production and metabolite distribution, the re-inoculation strategy halved the recovery period. These findings underscore the severity of temperature-induced stress in AF of FWs and highlight the importance of effective interventions to recover the performance of a bioprocess under stress. Adopting appropriate countermeasures can effectively mitigate perturbations and safeguard the stability of industrial AF processes.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"387 ","pages":"Article 144669"},"PeriodicalIF":8.1,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Retraction notice to “Assessing of cesium removal from wastewater using functionalized wood cellulosic adsorbent” [Chemosphere 270, May 2021, 128668] “功能化木质纤维素吸附剂对废水中铯的去除效果评价”[j].环境科学学报，2002,21(5):1286 - 1286。

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-26 DOI: 10.1016/j.chemosphere.2025.144640

Md. Nazmul Hasan , M.A. Shenashen , Md. Munjur Hasan , Hussein Znad , Md. Rabiul Awual

引用次数: 0

Cytotoxicity, biochemical, histological and gut microbiota changes in Eisenia fetida earthworms after exposure to different sulfamethoxazole and oxytetracycline concentrations 不同磺胺甲恶唑和土霉素浓度对臭Eisenia fetida蚯蚓细胞毒性、生化、组织学和肠道微生物群的影响

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-26 DOI: 10.1016/j.chemosphere.2025.144616

C.F. Rutkoski , I. Vergara-Luis , E. Urionabarrenetxea , N. Garcia-Velasco , B. Zaldibar , E. Anakabe , M. Olivares , A. Prieto , E.A. Almeida , M. Soto

{"title":"Cytotoxicity, biochemical, histological and gut microbiota changes in Eisenia fetida earthworms after exposure to different sulfamethoxazole and oxytetracycline concentrations","authors":"C.F. Rutkoski , I. Vergara-Luis , E. Urionabarrenetxea , N. Garcia-Velasco , B. Zaldibar , E. Anakabe , M. Olivares , A. Prieto , E.A. Almeida , M. Soto","doi":"10.1016/j.chemosphere.2025.144616","DOIUrl":"10.1016/j.chemosphere.2025.144616","url":null,"abstract":"<div><div>Sulfamethoxazole and oxytetracycline are antibiotics widely used to control or prevent bacterial diseases. They are frequently detected in soil, especially in soils fertilized with animal waste, and may cause toxic effects in non-target organisms. The aim of this study was to evaluate the effect of the antibiotics sulfamethoxazole (SMX) and oxytetracycline (OTC) on the earthworm <em>Eisenia fetida</em>, at concentrations of 0 (control), 0.1, 1.0 and 10.0 mg/kg, after 14 days of exposure. Neither antibiotic affected survival, growth or caused oxidative stress in <em>E. fetida</em>, however, they promoted changes in the cells of the system, decreasing cell viability and riboflavin content. Furthermore, the higher concentration of SMX affected the integrity of the epidermis, reducing the mucopolysaccharides present in the integument. Antibiotics negatively affected the intestinal microbiota of <em>E. fetida</em>, promoting an increase in bacterial phyla that harbor antibiotic resistance genes (ARGs), such as Firmicutes after exposure of earthworms to the two antibiotics and Proteobacteria that increased at the highest concentration of SMX. Furthermore, after 7 and 14 days of exposure, the concentration of antibiotics decreased in the soil, with greater degradation occurring for SMX than OTC, and, after 14 days of exposure, the earthworms bioaccumulated more SMX. Under the conditions studied, SMX proved to be more toxic than OTC, however, both antibiotics changed the intestinal microbiota of <em>E. fetida</em>, promoting the increase in phyla/genera that harbor ARGs. The effects observed at different levels of biological complexity are worrying, given that the concentrations tested are environmentally relevant.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"387 ","pages":"Article 144616"},"PeriodicalIF":8.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Enhanced arsenic accumulation in engineered Pseudomonas putida via heterologous expression of a DNA-binding transcription repressor ArsR 通过异源表达dna结合转录抑制因子ArsR增强工程恶臭假单胞菌的砷积累

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-25 DOI: 10.1016/j.chemosphere.2025.144659

Mandana Ghahghaei , Azar Shahpiri

{"title":"Enhanced arsenic accumulation in engineered Pseudomonas putida via heterologous expression of a DNA-binding transcription repressor ArsR","authors":"Mandana Ghahghaei , Azar Shahpiri","doi":"10.1016/j.chemosphere.2025.144659","DOIUrl":"10.1016/j.chemosphere.2025.144659","url":null,"abstract":"<div><div>Arsenic is a highly toxic metalloid that poses significant environmental and health risks due to its widespread presence in soil, water, and industrial processes. Its accumulation in living organisms can lead to severe health issues, underscoring the need for effective bioremediation strategies. In this study, the gene encoding ArsR from <em>Corynebacterium glutamicum</em> (CgArsR1) was cloned into the plasmid pSEVA234 and transformed into <em>Pseudomonas putida</em> KT2440. Following induction with isopropyl β-<span>d</span>-1-thiogalactopyranoside (IPTG), the CgArsR1 protein was detected in the soluble fraction of the recombinant strain (P-CgArsR). This strain demonstrated enhanced tolerance to both arsenite (As<sup>3+</sup>) and arsenate (As<sup>5+</sup>) at higher concentrations compared to the control strain with the empty vector. The resting cells of P-CgArsR accumulated 250 μg g<sup>−1</sup> dry cell weight (DCW) of As<sup>3+</sup> and 150 μg g<sup>−1</sup> DCW of As<sup>5+</sup>, while the control cells accumulated only 100 μg g<sup>−1</sup> of either form. Optimal arsenic accumulation occurred at pH 7, reaching a maximum of 200 μg g<sup>−1</sup> DCW, while NaCl negatively affected accumulation, reducing it to 100 μg g<sup>−1</sup> DCW at 120 mM NaCl. These results indicate that engineered strains could effectively remediate arsenic in wastewater with NaCl concentrations between 0 and 40 mM, highlighting their potential in bioremediation efforts.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"387 ","pages":"Article 144659"},"PeriodicalIF":8.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

引用次数: 0

Retraction notice to “Annealing temperature effect on cobalt ferrite nanoparticles for photocatalytic degradation” [Chemosphere 281, October 2021, 130903] “退火温度对钴铁氧体纳米颗粒光催化降解的影响”[j].化学通报，2021,10(10):130903。

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-23 DOI: 10.1016/j.chemosphere.2025.144636

S. Swathi , R. Yuvakkumar , P. Senthil Kumar , G. Ravi , Dhayalan Velauthapillai

引用次数: 0

Retraction notice to “Investigation of pure and g-C3N4 loaded CdWO4 photocatalytic activity on reducing toxic pollutants” [Chemosphere 291, Part 3, March 2022, 133090] “纯CdWO4和g-C3N4负载CdWO4光催化活性的研究”的撤回通知[Chemosphere 291， Part 3, March 2022, 133090]。

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-23 DOI: 10.1016/j.chemosphere.2025.144638

S.P. Keerthana , R. Yuvakkumar , P. SenthilKumar , G. Ravi , S.I. Hong , Dhayalan Velauthapillai

引用次数: 0

Retraction notice to “Preparation of pyrolytic coke/uio-66 composite and its effectiveness for removing mono-ethylene glycol (MEG) from aqueous environments” [Chemosphere 365, October 2024, 143321] “热解焦炭/ uo -66复合材料的制备及其对水环境中单乙二醇（MEG）的去除效果”的撤回通知[j]。

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-23 DOI: 10.1016/j.chemosphere.2025.144631

Behrad Barzegar , Rezvan Habibi , Leila Pourkhalil , Hassan Aghdasinia

引用次数: 0

Retraction notice to “Effect of calcium and phosphorus on ammonium and nitrate nitrogen adsorption onto iron (hydr)oxides surfaces: CD-MUSIC model and DFT computation” [Chemosphere 357, June 2024, 142070] “钙、磷对铁（氢）氧化物表面铵态氮和硝态氮吸附的影响：CD-MUSIC模型和DFT计算”[j].环境科学学报，2004,24(6):1470 - 1470。

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-08-23 DOI: 10.1016/j.chemosphere.2025.144632

Mengke Jia , Jie Ma , Qiongqiong Zhou , Lijie Liu , Xiaolei Jie , Hongen Liu , Shiyu Qin , Chang Li , Fuqing Sui , Haichao Fu , Haijiao Xie , Long Wang , Peng Zhao

引用次数: 0