Differential impacts of water diversion and environmental factors on bacterial, archaeal, and fungal communities in the eastern route of the South-to-North water diversion project

Environment International, Journal Year: 2025, Volume and Issue: 195, P. 109280 - 109280

Published: Jan. 1, 2025

Water diversion projects effectively mitigate the uneven distribution of water resources but can also influence aquatic biodiversity and ecosystem functions. Despite their importance, impacts such on multi-domain microbial community dynamics underlying mechanisms remain poorly understood. Utilizing high-throughput sequencing, we investigated bacterial, archaeal, fungal along eastern route South-to-North project during both non-water period (NWDP) (WDP). Our findings revealed competitive exclusion effects among bacterial archaeal communities WDP, characterized by decreased species richness increased biomass, while biomass significantly declined. Distance-decay relationships suggested homogenization WDP. Robustness analyses reduced stability with primarily influencing stability, environmental factors had a greater impact communities. Stochastic processes, homogenizing dispersal drift, intensified for Notably, only functional diversity relative abundance chemoheterotrophic organic compound catabolic bacteria declined photoautotrophic bacteria. PLS-PM indicated that shaped assembly processes guilds, whereas This study enhances our understanding WDP underscores importance assessing direct resulting fluctuations.

Language: Английский

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Tetracycline and quinolone contamination mediate microbial and antibiotic resistant gene composition in epiphytic biofilms of mesocosmic wetlands

Water Research, Journal Year: 2024, Volume and Issue: 267, P. 122484 - 122484

Published: Sept. 19, 2024

Language: Английский

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Organic Micropollutants in Waterways of a Large-Scale Water Diversion Project: Insights from Nontarget Screening and “Community” Analysis

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: 59(5), P. 2765 - 2777

Published: Jan. 31, 2025

Large-scale water diversion projects are essential for meeting the needs of water-stressed regions, necessitating an evaluation their impact on quality and aquatic ecosystems. This study provides first snapshots organic micropollutants (OMPs) along 1466 km Eastern Route China's South-to-North Water Diversion Project. Using nontarget analysis with ultrahigh-performance liquid chromatography high-resolution mass spectrometry, we identified quantified 357 OMPs from samples collected during period (WDP) nonwater (NWDP). The included 136 household compounds, 112 agricultural 102 industrial 7 traffic markers. Significant regional variations in OMP concentrations compositions were observed NWDP due to diverse local pollution sources route. However, such differences reduced WDP, likely transfer. diversity varied substantially but was more stable less distance decay WDP. Network indicated closer relationships between suggesting a consistent spatial distribution. source overwhelmingly influenced These findings underscore need ongoing assessments

Language: Английский

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Metagenomic insights into correlation of microbiota and antibiotic resistance genes in the worker-pig-soil interface: A One Health surveillance on Chongming Island, China

Journal of Hazardous Materials Advances, Journal Year: 2025, Volume and Issue: unknown, P. 100648 - 100648

Published: Feb. 1, 2025

Language: Английский

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Insights into the response of biological nitrogen removal process to organophosphate esters and the adaptive mechanisms of microbial community

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107472 - 107472

Published: March 14, 2025

Language: Английский

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Candidate Phyla Radiation (CPR) bacteria from hyperalkaline ecosystems provide novel insight into their symbiotic lifestyle and ecological implications

Microbiome, Journal Year: 2025, Volume and Issue: 13(1)

Published: April 7, 2025

Abstract Background Candidate Phyla Radiation (CPR) represents a unique superphylum characterized by ultra-small cell size and symbiotic lifestyle. Although CPR bacteria have been identified in varied environments, their broader distribution, associations with hosts, ecological roles remain largely unexplored. To address these knowledge gaps, serpentinite-like environment was selected as simplified model system to investigate the communities hyperalkaline environments association hosts extreme conditions. Additionally, enzymatic activity, global evolution of CPR-derived genes encoding essential metabolites (e.g., folate or vitamin B 9 ) were analyzed assessed. Results In highly alkaline ecosystem (pH = 10.9–12.4), metagenomic analyses water sediment samples revealed that constituted 1.93–34.8% microbial communities. Metabolic reconstruction 12 high-quality metagenome-assembled genomes (MAGs) affiliated novel taxa from orders UBA6257, UBA9973, Paceibacterales suggests lack complete biosynthetic pathways for amino acids, lipids, nucleotides. Notably, commonly harbored associated cofactor biosynthesis metabolism, including dihydrofolate reductase ( folA ), serine hydroxymethyltransferase glyA methylenetetrahydrofolate folD ). two presumed auxotrophic incapable forming tetrahydrofolate (THF) due absence , potential some harboring genes. The functionality experimentally verified heterologous expression -deletion mutant Escherichia coli MG1655 Δ . Further assessment available n 4,581) proteins synthesis bioactive derivatives and/or genes) present 90.8% examined. It widespread metabolic complementarity between hosts. Conclusions This finding deepens our understanding mechanisms CPR-host symbiosis, providing insight into cofactor-dependent mutualistic interactions. Our observations suggest may contribute organisms indirectly influence biogeochemical processes.

Language: Английский

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Multi-Metagenome Analysis Unravels Community Collapse After Sampling and Hints the Cultivation Strategy of CPR Bacteria in Groundwater

Microorganisms, Journal Year: 2025, Volume and Issue: 13(5), P. 972 - 972

Published: April 24, 2025

Groundwater harbors phylogenetically diverse Candidate Phyla Radiation (CPR) bacteria, representing an ideal ecosystem for studying this microbial dark matter. However, no CPR strains have been successfully isolated from groundwater, severely limiting further research. This study employed a multi-metagenome approach, integrating time-resolved sampling, antibiotic/nutrient interventions, and correlation networks to unravel ecological roles in groundwater provide insights into their subsequent cultivation. Through 36 metagenomes system containing at least 68 phyla, we revealed the time-sensitive collapse of communities: total abundance plummeted 7.9% 0.15% within 48 h post-sampling, driven by competition with rapidly dividing non-CPR such as members Pseudomonadota. Ampicillin (100 mg/L) stabilized communities suppressing competitors, whereas low-nutrient conditions paradoxically reversed effect. Long-term enrichment (14 months) recovered 63 phyla (0.35% abundance), revealing survival resilience despite nutrient deprivation. Correlation prioritized Actinomyces, novel Acidimicrobiaceae genus, Aestuariivirga, Baekduia Caedimonadaceae potential partners, providing actionable targets co-culture trials. Here, propose recommendations spanning activation status, identification symbiotic optimization culture conditions, which bypass traditional blind cultivation are critical future efforts cultivate bacterial groundwater. Cultivating bacteria will contribute clarifying diversity, roles, evolutionary mechanisms, metabolic pathways, genetic potential.

Language: Английский

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Impact of flow configuration on microbial ecological processes and health risks in biological activated carbon filters

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163204 - 163204

Published: April 1, 2025

Language: Английский

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Microbial resources and interactions across three-dimensional space for a freshwater ecosystem

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 980, P. 179522 - 179522

Published: May 2, 2025

Language: Английский

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Effect of soil-groundwater system on migration and transformation of organochlorine pesticides: A review

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 290, P. 117564 - 117564

Published: Dec. 18, 2024

Language: Английский

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