Biodegradation of 2,4,6‐trinitrotoluene and hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine by Actinomycetes species, first time isolated and characterized from water, wastewater, and sludge

Water and Environment Journal, Journal Year: 2023, Volume and Issue: 37(3), P. 538 - 548

Published: March 15, 2023

Abstract Biodegradation has been applied to remediate explosives contaminants, and bacteria have a high potential for the degradation of explosives, such as hexahydro‐1,3,5‐trinitro‐1,3,5‐triazine (RDX) 2,4,6‐trinitrotoluene (TNT). The present study aims screen characterize explosive biodegradable Actinomycetes from water, wastewater, sludge. isolates were recovered 80 environmental samples diverse resources in contaminated areas Iran identified genus species levels using conventional molecular methods. growth rate presence pollutants chromatography was used determine their biodegradation capability. Twenty‐nine (36.25%) characterized cultured that belonged 6 24 validated species. most prevalent isolated Mycobacterium with 11 (37.94%), Rhodococcus seven (24.13%), Nocardia four (13.8%), Streptomyces three (10.33%). Moreover, our results showed these could degrade consume 50–80% RDX TNT sole carbon energy source. In conclusion, we explosive‐contaminated RDX. Hence, seeking screening untapped ecosystems possess unexplored will increase chances discovering resident microorganism capable degrading application bioremediation process. this can be useful intact nature eliminate pollution, which is one major problems world.

Language: Английский

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Short-term continuous cropping leads to a decline in rhizosphere soil fertility by modulating the perilla root exudates

Rhizosphere, Journal Year: 2024, Volume and Issue: 32, P. 100966 - 100966

Published: Oct. 5, 2024

Language: Английский

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Evaluation of the physiological response of Chlorella vulgaris to nanoplastics: involvement of boron and the amino acid biosynthesis pathway

Environmental and Experimental Botany, Journal Year: 2023, Volume and Issue: 212, P. 105382 - 105382

Published: May 22, 2023

Language: Английский

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Defense mechanisms of alfalfa against cyclic tetramethylene tetranitramine (HMX) stress

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 898, P. 165585 - 165585

Published: July 17, 2023

Language: Английский

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Remediation of Soils Polluted by Military Activities

˜The œhandbook of environmental chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 161 - 190

Published: Jan. 1, 2024

Language: Английский

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Bioremediation of tetramethyl thiuram disulfide and resource utilization of natural rubber wastewater by WR-2 Bacillus-dominated microbial community

Environmental Science and Pollution Research, Journal Year: 2022, Volume and Issue: 29(42), P. 63182 - 63192

Published: April 22, 2022

Language: Английский

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Defense Mechanisms of Alfalfa Against Cyclic Tetramethylene Tetranitramine (Hmx) Stress

Published: Jan. 1, 2023

Much attention has been paid to the environmental toxicity and ecological risk caused by cyclic tetramethylene tetranitramine (HMX) pollution in military activity sites. In this study, response mechanism of alfalfa plants HMX was analyzed from aspects photosynthetic system, micromorphology, antioxidant enzyme mineral metabolism, secondary metabolism. Exposure 5 mg·L-1 resulted a significant increase leaf N content drift Fourier transform infrared protein peak area. Transmission electron microscopy images revealed damage root system subcellular morphology, but plant leaves effectively resisted pressure, parameters essentially maintained steady-state levels. The proline decreased significantly 23.1–47.2%, reactive oxygen species increased 1.66–1.80 fold. roots regulate transport/absorption many elements that impart stress resistance, Cu, Mn, Na uptake is associated with metabolism upregulated general exposure, main differences appearing lipids lipid-like molecules, further confirming biofilm structure. causes an imbalance energy supply oxidative phosphorylation generates important biomarkers form pyrophosphate dihydrogen phosphate. Interestingly, had no effect on basic metabolic networks (i.e., glycolysis/gluconeogenesis tricarboxylic acid cycle), good resistance. Alfalfa apparently multiple network systems resist/overcome toxicity. These findings provide scientific basis for improving tolerance understanding mechanism.

Language: Английский

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Microecological Characteristics of Water Bodies/Sediments at Different Radiation Distances and Microbial Remediation Strategies after 50 Years of Pollution Exposure in Typical Ammunition Destruction Sites in China

Published: Jan. 1, 2023

The effects of long-term ammunition pollution on microecological characteristics were analyzed to formulate microbial remediation strategies. basic physical and chemical properties the water/sediment (pH, nitrate, nitrite, ammonium) changed significantly, significant differences in stable isotope ratios N O (nitrate nitrogen) confirmed degradability TNT by indigenous microorganisms exposed pollution. Heavy metals, such as Pb, Zn, Cu, Cd, Cs, Sb, have synergistic toxic ammunition-contaminated sites, significantly decreased diversity richness core area. However, exposure edge area induced use a carbon nitrogen sources for life activities growth development. Bacteroidales group was inhibited contamination. Mg K involved internal mechanism transport, enrichment, metabolism TNT. Nine strains TNT-utilizing microbes screened efficient degradation tolerance typical heavy metals (copper, zinc lead) found contaminated compound bacterial agent prepared effective repair soil improved ecological environment.

Language: Английский

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A flow-drop electrochemiluminescent design for portable detection of soil and skin 2,4,6-trinitrotoluene

Microchemical Journal, Journal Year: 2022, Volume and Issue: 185, P. 108309 - 108309

Published: Dec. 10, 2022

Language: Английский

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