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

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2024, Номер unknown

Опубликована: Сен. 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

Язык: 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, Год журнала: 2025, Номер unknown, С. 137348 - 137348

Опубликована: Янв. 1, 2025

Язык: Английский

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

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 137354 - 137354

Опубликована: Янв. 1, 2025

Язык: 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, Год журнала: 2025, Номер unknown, С. 137997 - 137997

Опубликована: Март 1, 2025

Язык: 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, Год журнала: 2025, Номер unknown, С. 116602 - 116602

Опубликована: Апрель 1, 2025

Язык: Английский

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

Applied Radiation and Isotopes, Год журнала: 2025, Номер 222, С. 111847 - 111847

Опубликована: Апрель 16, 2025

Язык: Английский

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

Frontiers in Microbiology, Год журнала: 2025, Номер 16

Опубликована: Апрель 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

Язык: 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, Год журнала: 2025, Номер 493, С. 138383 - 138383

Опубликована: Апрель 22, 2025

Язык: 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, Год журнала: 2024, Номер 13(1), С. 115239 - 115239

Опубликована: Дек. 27, 2024

Язык: Английский

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