A5074103907- Toxic Organic Pollutants Impact
- Insect and Pesticide Research
- Insect symbiosis and bacterial influences
- Effects and risks of endocrine disrupting chemicals
- Pharmaceutical and Antibiotic Environmental Impacts
- Microplastics and Plastic Pollution
- Air Quality and Health Impacts
- Plant and animal studies
- Analytical chemistry methods development
- Insect Resistance and Genetics
- Pesticide and Herbicide Environmental Studies
- biodegradable polymer synthesis and properties
- Heavy metals in environment
- Atmospheric chemistry and aerosols
- Waste Management and Recycling
- Particle accelerators and beam dynamics
- Plant nutrient uptake and metabolism
- Environmental and Agricultural Sciences
- Acupuncture Treatment Research Studies
- Environmental remediation with nanomaterials
- Carcinogens and Genotoxicity Assessment
- Microbial bioremediation and biosurfactants
- Liver Disease Diagnosis and Treatment
- Plant Stress Responses and Tolerance
- Plant responses to elevated CO2
China University of Mining and Technology
2024
China University of Mining and Technology - Beijing
2024
Ministry of Ecology and Environment
2012-2024
Shandong Academy of Agricultural Sciences
2024
Shandong First Medical University
2023
Sino-Japan Friendship Center for Environmental Protection
2023
Henan Institute of Science and Technology
2022
Nanjing Normal University
2016-2020
Capital Medical University
2020
Life University
2016-2017
We demonstrated that Variovorax boronicumulans CGMCC 4969 has two enzymatic systems—nitrilase and nitrile hydratase/amidase—that convert indole-3-acetonitrile (IAN) to the important plant hormone indole-3-acetic acid (IAA). The IAA synthesis systems have very different regulatory mechanisms, affecting rate duration. nitrilase was induced by IAN, which rapidly converted IAA; subsequently, consumed for cell growth. hydratase (NHase) amidase system constitutively expressed slowly but...
Imidacloprid (IMI) is mainly metabolized via nitroreduction and hydroxylation pathways, which produce different metabolites that are toxic to mammals insects. However, regulation of IMI metabolic flux between pathways still unclear. In this study, Pseudomonas putida was found metabolize 5-hydroxy nitroso therefore used for investigating the flux. The cell growth time, cosubstrate, dissolved oxygen concentration, pH showed significant effect on degradation formation. Gene cloning...
The plant growth-promoting rhizobacterium <italic>Variovorax boronicumulans</italic> CGMCC4969 was used to degrade the neonicotinoid insecticide, acetamiprid (AAP), in surface water, and enzymatic mechanisms of AAP degradation were explored.
Abstract The intensive and extensive application of imidacloprid in agriculture has resulted water pollution risks to aquatic invertebrates. However, pure bacteria remediation surface environments not been studied. Here, we isolated an imidacloprid-degrading bacterium from a environment, examined its degradation culture water, sequenced genome, compared Clusters Orthologous Groups (COG) protein categorization with that for another bacterium. isolate was obligate oligotrophic bacterium,...
Flonicamid (N-cyanomethyl-4-trifluoromethylnicotinamide, FLO), a novel selective systemic pyridinecarboxamide insecticide, effectively controls hemipterous pests. However, microbial degradation of flonicamid, along with the enzymatic mechanism, has not been studied. Here, bacterial isolate PG13, which converts flonicamid into 4-(trifluoromethyl)nicotinol glycine (TFNG) and N-(4-trifluoromethylnicotinoyl)glycinamide (TFNG-AM), was isolated identified as Alcaligenes faecalis CGMCC 17553. The...
Sulfoxaflor, a sulfoximine insecticide, could efficiently control many insect pests of sap-feeding. Microbial degradation sulfoxaflor and the enzymatic mechanism involved have not been studied to date. A bacterial isolate JW2 that transforms X11719474 was isolated identified as Aminobacter sp. CGMCC 1.17253. Both recombinant Escherichia coli strain harboring 1.17253 nitrile hydratase (NHase) gene pure NHase acquired sulfoxaflor-degrading ability. is typical cobalt-containing content subunit...
The nitrogen-fixing bacterium<italic>Ensifer meliloti</italic>CGMCC 7333 and its nitrile hydratase (NHase) degrade the neonicotinoid insecticides, thiacloprid (THI) acetamiprid (ACE), to their corresponding amide metabolites.
Urban road dust and camphor tree bark samples were collected in June of 2009 from Suzhou, Wuxi Nantong the Yangtze River Delta, China. Eight polybrominated diphenyl ether (PBDE) congeners (BDE-28, 47, 100, 99,154, 153, 183 209) measured to determine levels compositional profiles samples. The concentrations Σ7PBDEs BDE-209 ranged N.D 35.5 μg/kg 4.01 1439 dry weight (dw) samples, 5.1 799 121 3243 lipid (lw) respectively. was predominant congener (contributing 64.1–99.8% Σ8PBDEs) all Apart...
Microvirga flocculans CGMCC 1.16731 can degrade many cyano group-containing neonicotinoid insecticides. Here, its genome was sequenced, and a novel nitrile hydratase gene cluster discovered in plasmid. The NHase (pnhF) has structure β-subunit 1, α-subunit, 2, which is different from previously reported structures. Phylogenetic analysis of α-subunits indicated that NHases containing the three subunit (β1αβ2) are independent two subunits (αβ). pnhF successfully expressed Escherichia coli,...
Flonicamid is a novel, selective, systemic pyridinecarboxamide insecticide that effectively controls hemipterous pests. Sulfoxaflor, sulfoximine insecticide, many sap-feeding insect Ensifer meliloti CGMCC 7333 transforms flonicamid into N-(4-trifluoromethylnicotinoyl) glycinamide (TFNG-AM). Resting cells of E. (optical density at 600 nm [OD600] = 5) transformed 67.20% the in 200-mg/L solution within 96 h. sulfoxaflor N-(methyl(oxido){1-[6-(trifluoromethyl) pyridin-3-yl]...
o investigate the role of selenomethionine (SeMet) in regulating drought tolerance strawberry plants, we explored effects SeMet on antioxidative enzymes, water physiology and fruit quality plants under stress (DS). In this study, used variety 'Sweet Charlie' as material investigated through foliar spraying pot experiments. The results showed that DS obviously enhanced activities antioxidant enzymes (ascorbate peroxidase, superoxide dismutase, peroxidase catalase) increased malondialdehyde...