Molecular strategies of the pygmy grasshopper Eucriotettix oculatus adapting to long-term heavy metal pollution

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 276, P. 116301 - 116301

Published: April 10, 2024

To study the heavy metal accumulation and its impact on insect exterior chromosome morphology, reveal molecular mechanism of insects adapting to long-term compound pollution habitats, this study, in Diaojiang river basin, which has been polluted by metals(HMs) for nearly a thousand years, two Eucriotettix oculatus populations was collected from mining non-mining areas. It found that contents 7 metals (As, Cd, Pb, Zn, Cu, Sn, Sb) E. area were higher than 1–11 times. The analysis morphology shows external hind wing type chromosomal are significant differences between populations. Based accumulation,morphological change, stable population density, it is inferred affected adapted environment pollution. Then, analyzing transcriptome populations, digestion, immunity, excretion, endocrine, nerve, circulation, reproductive other systems lysosomes, endoplasmic reticulum cell structure-related gene expression suppressed. This functions above-mentioned related inhibited stress. However, also through up-regulation genes above system, such as ATP2B, pepsin A, ubiquitin, AQP1, ACOX, ATPeV0A, SEC61A, CANX, ALDH7A1, DLD, aceE, Hsp40, catalase, etc., down-regulation MAPK signalling pathway genes, can enhanced nutrient absorption, improve energy metabolism, repair damaged cells degrade abnormal proteins, maintain stability systems, resist damage so adapt long time.

Language: Английский

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In Vitro Removal of Cd and Pb Through the Bacterial Strain Burkholderia zhejiangensis CEIB S4-3: Efficiency and Cellular Mechanisms Implicated in the Process

Processes, Journal Year: 2025, Volume and Issue: 13(1), P. 276 - 276

Published: Jan. 19, 2025

Heavy metals are among the most toxic environmental pollutants. They a group of chemical elements broadly distributed in different environments. Anthropogenic activities such as agriculture, livestock farming, and mining release large amounts waste that contain heavy into environment. Bacteria organisms present wide diversity cellular mechanisms can be used to develop efficient, low-cost, easy-to-implement, sustainable processes remediate sites contaminated with metals. In this study, capacity strain Burkholderia zhejiangensis CEIB S4-3 remove Cd, Pb, mixture both was evaluated through vitro experiments. B. eliminate on average 90% Cd+2 91% Pb+2 study system (50 mg/L), while presence metals, bacterial strain, removal Cd Pb 59 75%, respectively. The main mechanism for removing extracellular biosorption, while, case it intracellular bioaccumulation. from were removed absorption. addition, analysis genome revealed genes related resistance implicated sensing transcriptional response exposure efflux systems important. data obtained work basis developing new using S4-3.

Language: Английский

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Accumulation and Transport of Cd, Pb, As, and Cr in Different Maize Varieties in Southwest China

Agriculture, Journal Year: 2025, Volume and Issue: 15(2), P. 203 - 203

Published: Jan. 18, 2025

The southwestern region of China is one the major maize (Zea mays L.)-producing areas and a concentrated zone farmland contaminated by heavy metals (HMs). Selection varieties with low accumulation HMs under complex HM pollution conditions most feasible effective ways for safe utilization HM-polluted farmland. In this study, we conducted field experiments to investigate differences in biological traits among 28 local combined soil Cd, Pb, As, Cr, Hg. We analyzed absorption, accumulation, transport characteristics Cr various parts plant (Hg was not detected any part plants) explored relationships contents different through cluster analysis, correlation principal component analysis. results indicated that maize, root length, dry weight, height were significantly influenced content, while stem weight least affected. capacity followed order grains < stems cobs leaves roots, root–grain root–stem cob–grain stem–cob stem–leaf. addition, As Pb Cd. Different exhibited synergistic effects parts, except stem, particularly grains. A synchronous mechanism observed other parts. primarily derived from human activities such as extraction, storage, smelting non-ferrous metals, parent material weathering products played secondary role. yield tested ranged 7377.6 11,037.0 kg·hm−2, M5 (Haoyu 1511) achieving highest yield. M2, M4, M5, M9, M10, M21, M25–28 identified suitable popularization HM-contaminated soils due their HMs.

Language: Английский

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The global research trends and hotspots on phthalate esters (PAEs): A comprehensive visualization and bibliometric analysis (2000-2023)

Environmental Chemistry and Ecotoxicology, Journal Year: 2025, Volume and Issue: 7, P. 381 - 393

Published: Jan. 1, 2025

Language: Английский

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New insights into immobilized bacterial systems for removal of heavy metals from wastewater

International Journal of Environmental Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Language: Английский

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Spatial distribution, contamination levels, and risk assessment of heavy metals along the Eastern India coastline

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117779 - 117779

Published: March 9, 2025

Language: Английский

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The Ecological Risks of Heavy Metals in the Estuarine Wetland Ecosystem and Their Impacts on Human Health: A Case from Yellow River Delta National Nature Reserve, China

Land, Journal Year: 2025, Volume and Issue: 14(4), P. 845 - 845

Published: April 12, 2025

Nature reserves are integral to sustaining ecological balance, functioning like a precise regulator, where various species depend on and constrain one another collectively form stable ecosystem. Nevertheless, in the wake of economic development, pollutants heavy metal contamination have insidiously emerged, imperceptibly influencing all these processes. To understand risk metals an estuarine nature reserve, this study focused Yellow River Delta Reserve (YRDNNR) analyzed distribution, potential environmental risks, possible sources (Mn, Cu, Zn, Cr, As, Cd, Pb) surface sediments region. The results indicated that YRDNNR was rich As with Cd presenting most substantial risk. Further analysis suggested high levels could be ascribed agricultural activities. This also found practices made significant contribution carcinogenic pose certain risks natural environment human health. More in-depth monitoring testing should carried out, measures adopted accordance their development. Moreover, systematic regulation fertilizer pesticide use, along enhancements farmers’ awareness, is great significance alleviating pollution hazards. findings carry implications for conservation coastal wetlands, serving as critical alert proliferation other areas delta.

Language: Английский

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Analysis of heavy metals in sediments with different particle sizes and influencing factors in a mining area in Hunan Province

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 2, 2024

Heavy metals mainly exist on the surface of sediment particles and are transported using particulate matter as carriers. Therefore, particle size can affect adsorption, release, migration heavy metals. This study aim to investigate distribution characteristics chemical fraction Cd, Pb, As contents in sediments different sizes BCR method, determine key factors affecting through mineralogical methods such XRD EDS. The results revealed that overall content various forms increases with decrease size, presents fine particles. analysis indicated predominantly contained clay minerals chlorite illite coarse include primary minerals. Due mining areas middle-upstream, Pb were primarily associated galena, sphalerite pyrite, respectively. is jointly influenced by material composition.

Language: Английский

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Multi- and transgenerational effects of environmental chemicals on mollusks: An underexplored experimental design in aquatic (eco)toxicological studies

Environmental Pollution, Journal Year: 2024, Volume and Issue: 351, P. 124058 - 124058

Published: April 27, 2024

Language: Английский

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A Bibliometric Analysis of a Genetic Algorithm for Supply Chain Agility

Mathematics, Journal Year: 2024, Volume and Issue: 12(8), P. 1199 - 1199

Published: April 17, 2024

As a famous population-based metaheuristic algorithm, genetic algorithm can be used to overcome optimization complexities. A adopts probabilistic transition rules and is suitable for parallelism, which makes this attractive in many areas, including the logistics supply chain sector. To obtain comprehensive understanding of development area, paper presents bibliometric analysis on application chains using data from 1991 2024 Web Science database. The authors found growing trend number publications citations over years. This serves as an important reference researchers by highlighting research such multi-objective optimization, metaheuristics, sustainability issues logistics, machine learning integration. also underlines importance Non-Dominated Sorting Genetic Algorithm II (NSGA-II), sustainability, learning, variable neighborhood search near future. integration with potential gap filled limitations algorithms, long computational time, difficulties obtaining optimal solutions, convergence chains.

Language: Английский

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