Diverse adaptation strategies of generalists and specialists to metal and salinity stress in the coastal sediments

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121073 - 121073

Published: Feb. 1, 2025

Language: Английский

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Enhancing Cd and Pb tolerance of Robinia pseudoacacia (black locust) by regulating antioxidant defense system, macroelement uptake and microstructure

Tree Physiology, Journal Year: 2025, Volume and Issue: 45(3)

Published: Feb. 2, 2025

Woody plants have received considerable attention for the phytoremediation of heavy metal-contaminated soil. This study aimed to investigate changes in antioxidant enzyme activity, macroelement uptake and microstructure woody plant Robinia pseudoacacia (black locust) cadmium (Cd) lead (Pb) co-contaminated soil based on dynamic sampling. The results show that black locust demonstrates strong tolerance Cd Pb After 30-120 days cultivation, activities superoxide dismutase, peroxidase (potassium [K] calcium [Ca]) content leaves significantly declined response Pb. However, after 160 d activities, chlorophyll, sulfhydryl soluble protein contents, as well Ca magnesium were returned normal levels under 40 mg kg-1 1000 contaminated (CdPb3). Meanwhile, K CdPb3 treatment was (P < 0.05) increased by 68.9% compared with control. Cadmium primarily accumulated roots. Scanning electron microscope analysis indicated sieve tubes roots stems might block transport Transmission number volume osmiophilic particles cell walls thickened stress. Path further growth related macroelements physiological change (photosynthesis, activity chelation). Thus, could effectively regulate defense system, absorption enhance Moreover, maintain urease, acid phosphatase sucrase These findings suggest be considered a useful phytostabilization Cd- Pb-contaminated

Language: Английский

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Red Mud Potentially Alleviates Ammonia Nitrogen Inhibition in Swine Manure Anaerobic Digestion by Enhancing Phage-Mediated Ammonia Assimilation

Microorganisms, Journal Year: 2025, Volume and Issue: 13(3), P. 690 - 690

Published: March 19, 2025

Red mud has been demonstrated to improve the methane production performance of anaerobic digestion (AD). However, influence red on ammonia nitrogen inhibition during AD through mediating role bacteria–phages interactions in this process remains poorly understood. Thus, study investigated impact metabolism and characterized phage prokaryotic communities a metagenomic analysis. The results showed that significantly increased by 23.1% promoted conversion into organic nitrogen, resulting 4.8% increase total nitrogen. Simultaneously, it enriched key microbial genera Methanothrix, Proteinophilum, Petrimonas 0.5%, 0.8%, 2.7%, respectively, suggesting an enhancement syntrophic acetate oxidation with greater tolerance. A viral analysis identified seven nitrogen-metabolism-related auxiliary metabolic genes (AMGs), glnA (encoding glutamine synthetase) being most abundant. Compared control treatments, treatments led higher abundance temperate phages number AMGs. Furthermore, two new hosts carrying (Mycolicibacteria smegmatis Kitasatopola aureofaciens) were predicted, indicating expanded host range spread Overall, our findings highlight importance alleviating provide novel understanding swine manure.

Language: Английский

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Stabilization effects and mechanisms of lignin-based hydrogel-coated sulfide nano-zero-valent iron on lead and cadmium contamination in soil

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 492, P. 138095 - 138095

Published: April 5, 2025

Language: Английский

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Biogas production enhancement from anaerobic digestion with magnetic biochar: Insights into the functional microbes and DIET

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 381, P. 125347 - 125347

Published: April 14, 2025

Language: Английский

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The impact of water-sediment regulation scheme (WSRS) on the chemistry of dissolved organic matter in the Yellow River estuary and adjacent waters

Water Research, Journal Year: 2025, Volume and Issue: 282, P. 123669 - 123669

Published: April 17, 2025

Dissolved organic matter (DOM) plays important roles in the global carbon cycle and aquatic ecosystem health. Estuaries are critical zones connecting land ocean which DOM experiences dispersion, transformation, degradation, deposition, etc. The Water-sediment regulation scheme (WSRS) was implemented Yellow River (YR) approximately half of annually sediment a quarter water were poured into estuary around 20 days. Meanwhile, huge amounts discharged (YRE) rapidly, but their processes fates YRE adjacent seas unclear. This study aims to investigate molecular spectrum compositions its associated transformation mechanisms sea before (from June 8 12, 2022) after July 18 22, WSRS. A relatively greater amount highly unsaturated compounds terrestrial-derived found with higher aromaticity humification degree WSRS, by bulk geochemical techniques, optical spectroscopy Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) techniques. High levels less photodegraded estuarine region due rapidly pouring fresh YRE. high suspended concentration facilitates sorption dissolved (DOC), especially those sulphur-containing decreased both relative intensity number. However, long term, WSRS may lead an increase DOC column. Along YR plume coastal current, transported from Laizhou Bay south arrived at Bohai Strait east. Overall, this research provides valuable insights variations induced intensive dam-orientated short term.

Language: Английский

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Diazotrophic community difference between specialists and generalists in response to arsenic and antimony contaminations

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121676 - 121676

Published: April 1, 2025

Language: Английский

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The cytotoxicity of photoexcited CdS in an E. coli-CdS hybrid system and the roles of the sacrificial agent to reduce this toxic effect

Environmental Research, Journal Year: 2024, Volume and Issue: unknown, P. 120700 - 120700

Published: Dec. 1, 2024

Language: Английский

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