Specific Enrichment of arsM-Carrying Microorganisms with Nitrogen Fixation and Dissimilatory Nitrate Reduction Function Enhances Arsenic Methylation in Plant Rhizosphere Soil

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

Published: Jan. 14, 2025

Plants can recruit microorganisms to enhance soil arsenic (As) removal and nitrogen (N) turnover, but how microbial As methylation in the rhizosphere is affected by N biotransformation not well understood. Here, we used acetylene reduction assay, arsM gene amplicon, metagenome sequencing evaluate influence of on Vetiveria zizanioides, a potential hyperaccumulator. V. zizanioides was grown mining soils (MS) artificial As-contaminated (AS) over two generations controlled pot experiment. Results showed that content dimethylarsinic acid significantly positively correlated with rate fixation activity nitrite reductase. The As-methylating species (e.g., Flavisolibacter Paraflavitalea) were enriched root-associated compartments second generation MS AS. Notably, higher abundance genes involved (nifD, nifK) dissimilatory nitrate ammonium (narG/H, nirB/D/K/S) detected than first generation. metabolic pathway analysis further demonstrated fixing-stimulative DNRA-stimulative could provide synthesis S-adenosyl-l-methionine, serving as methyl donors for methylation. This study highlights important conversion-stimulative pathways has implications enhancing phytoremediation soils.

Language: Английский

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Generational Specific Recruitment of Arsenic- and Antimony-Reducing Microorganisms in Plant Root-Associated Niches for Adapting to Metalloid-Metal Pollution

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

The recruitment of microorganisms by plants can enhance their adaptability to environmental stressors, but how root-associated niches recruit specific for adapting metalloid-metal contamination is not well-understood. This study investigated the generational in different root

Language: Английский

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Enhanced methanogenesis and efficient ciprofloxacin degradation via nZVI@LDH in an electricity-driven anaerobic bioreactor: A biotic-abiotic hybrid system for ROS regulation and ARGs mitigation

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137348 - 137348

Published: Jan. 1, 2025

Language: Английский

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A cooperation mechanism between Bacillus thuringiensis and Citrobacter freundii that enhances cadmium biomineralization

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137354 - 137354

Published: Jan. 1, 2025

Language: Английский

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Phosphate-solubilizing bacteria facilitate rhizospheric processes of Bidens pilosa L. in the phytoremediation of cadmium-contaminated soil: Link between phosphorus availability and cadmium accumulation

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137997 - 137997

Published: March 1, 2025

Language: Английский

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Fate and behavior of uranium biomineralization by the native Burkholderia sp. S1 isolated from tailing areas

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116602 - 116602

Published: April 1, 2025

Language: Английский

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Potential Risks of In-situ Microbial Remediation of Uranium-contaminated Groundwater: Uranium Release and remigration

Applied Radiation and Isotopes, Journal Year: 2025, Volume and Issue: 222, P. 111847 - 111847

Published: April 16, 2025

Language: Английский

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Manganese toxicity suppressing nitrogen-fixing bacteria growth and impairing nitrogen uptake and utilization in sugarcane

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: April 16, 2025

Sugarcane (Saccharum spp.) is a crucial crop for sugar and bioethanol production. However, sugarcane grown in the acidic soils of southern China often suffers from severe leaf chlorosis due to excessive soil manganese (Mn). This study investigates effects Mn toxicity on physicochemical properties microbial communities rhizosphere soil, as well its impact growth nitrogen uptake utilization. Soil samples were collected fields with varying levels toxicity. Physicochemical analyzed, including pH, available nitrogen, community composition. The was assessed through measurements plant biomass, chlorosis, efficiency. significantly lowered pH altered structure. Bacterial genera such Nocardioides Sinomonas, which are involved ureolysis, cellulolysis, oxidation, promoted. In contrast, like Nitrospirota, associated fixation, inhibited. disruption hindered conversion ammonium nitrate reducing nitrogen. Consequently, development suppressed, limited. findings highlight detrimental cultivation high-Mn areas. composition reduced availability directly growth. These results underscore importance applying appropriate fertilizers mitigate improve fertility regions. Future research should focus developing strategies enhance cycling promote beneficial support sustainable

Language: Английский

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Soil-dependent responses of bacterial communities, phosphorus and carbon turnover to uranium stress in different soil ecosystems

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 493, P. 138383 - 138383

Published: April 22, 2025

Language: Английский

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Improvement of Ecological Structure and Function in Phosphorus Tailings-Based Soils through Phosphorus-Solubilizing Bacteria Inoculation and Magnetic Field Treatment

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 13(1), P. 115239 - 115239

Published: Dec. 27, 2024

Language: Английский

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