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Bacillus (bacteria), etc ; arsenic; genes; groundwater; oxidoreductases; prokaryotic cells; China; Show all 7 Subjects
Abstract:
... Many investigations suggest that dissimilatory arsenate-respiring prokaryotes (DARPs) play a key role in stimulating reductive mobilization of As from solid phase into groundwater, but it is not clear how environmental Mn(II) affects the DARPs-mediated reductive mobilization of arsenic. To resolve this issue, we collected soil samples from a realgar tailings-affected area. We found that there were ...
bacteria, etc ; Pseudomonas; caffeine; carbon; decaffeination; filtration; manganese dioxide; manganese monoxide; quartz; sand; synergism; China; Show all 12 Subjects
Abstract:
... Bioaugmented sand filtration has attracted considerable attention because it can effectively remove contaminants in drinking water without additional chemical reagent addition. In this study, a synthesized chemical manganese dioxide (MnO₂)-coated quartz sand (MnQS) and biogenic manganese oxide (BioMnOₓ) composite system was proposed to simultaneously remove typical pharmaceutical contaminants and ...
... The ultimate purpose of phytoextraction is not only to remove heavy metals from soil but also to improve soil quality. Here, we evaluated how the joint effect of Streptomyces pactum (strain Act12) and inorganic (Hoagland's solution) and organic (humic acid and peat) nutrients affected the phytoextraction practice of cadmium (Cd) and zinc (Zn) by potherb mustard, and the microbial community composi ...
Bacillus (bacteria); bacteria, etc ; arsenates; arsenic; arsenites; groundwater; manganese oxides; synergism; Show all 8 Subjects
Abstract:
... Iron-manganese binary oxides (Fe-Mn oxides) have the potential to immobilize arsenite/arsenate [As(III/V)] in situ in natural environments. However, the As(III/V) immobilization performances of Fe-Mn oxides in the presence of indigenous metal-reducing bacteria in reducing groundwater systems have received limited attention. Here, As(III/V) immobilization by Fe-Mn oxides and the interactions of Fe ...
Bacillus (bacteria); bacteria, etc ; Microcystis; algicides; algology; chlorophyll; extracellular matrix; glass; pollution; Show all 9 Subjects
Abstract:
... Harmful cyanobacterial blooms are global pollution problems. Algicidal bacteria, an effective method to control cyanobacteria that is widely studied in the laboratory, is often less effective when used in natural environments. A bacterium Bacillus sp. AK3, which has algicidal and microcystin-RR (MC-RR) degradation abilities, was used in this study. We determined the efficacy of Bacillus sp. AK3 in ...
... Luminescent Cu@Cu₂S nanozymes have been prepared by a one-pot method, displaying high peroxidase-like and oxidase-like activity. Fluorescence images show that these nanozymes adhere to the surface of the bacterial cell and scanning electron microscopy reveals that the nanomaterials cause folding and collapse of the bacterial surface, resulting in bacterial death. ...
Bacillus (bacteria); bacteria, etc ; adsorption; biotransformation; ducks; kinetics; pollution; research; sulfamethoxazole; toxicity; wastewater; zinc; Show all 12 Subjects
Abstract:
... The complex mixtures of antibiotics and heavy metals are commonly existed in livestock and poultry breeding wastewater. Effective and simultaneous removal of these toxic compounds by microorganisms, especially single strains, remains a considerable challenge. In this study, a novel functional strain SDB4, isolated from duck manure and identified as Bacillus sp., has been shown to possess high remo ...
... Hypoxanthine‐guanine phosphoribosyltransferase (HGPRT) is a key enzyme in the purine salvage pathway. Here, the reverse reaction of HGPRT from the thermophilic bacterium Hungateiclostridium thermocellum was studied in the presence of IMP and pyrophosphate. As for the human enzyme, the bacterial HGPRT was activated by guanine. Furthermore, guanine was found to operate as both an activator and an in ...
coliform bacteria; fecal bacteria, etc ; World Health Organization; color; geochemistry; low educational status; pH; people; turbidity; Thailand; Show all 10 Subjects
Abstract:
... Poor-quality drinking water can cause numerous health problems, particularly for people who are living with poor economic conditions, have a low educational status and have limited access to safe drinking water, such as the hill tribe people in Thailand. This study aimed to assess the quality of different sources of natural drinking water from the hill tribe villages in northern Thailand. Seventy- ...
bacteria, etc ; environment; microbial communities; microbiome; Show all 4 Subjects
Abstract:
... The complexity of microbial communities suggests prevalent interactions involving more than just pairs of species. These so-called higher-order interactions may reveal new molecules that enable bacteria to deal with complex environments. This forum article discusses how higher-order interactions can be detected and why molecular biologists might care. ...
Gram-negative bacteria; aquatic bacteria, etc ; chemical analysis; nuclear magnetic resonance spectroscopy; polymers; polysaccharides; seawater; Sea of Japan; Show all 8 Subjects
Abstract:
... Kangiella japonica KMM 3897 is a Gram-negative bacterium isolated from a coastal sea-water sample of the Sea of Japan. In this paper, the results about the structure and the antiproliferative effect on cancer cells of the capsular polysaccharide isolated from the Kangiella japonica KMM 3897 have been described. The carbohydrate polymer was isolated and purified by several separation techniques, an ...
bacteria, etc ; acid hydrolysis; cell walls; peptidoglycans; Show all 4 Subjects
Abstract:
... The study of peptidoglycan-binding proteins frequently requires in vitro binding assays, in which the isolated peptidoglycan used as a substrate must be carefully quantified. Here, we describe an easy and sensitive assay for peptidoglycan quantification based on a modified Nelson–Somogyi reducing sugar assay. We report the response of this assay to different common sugars and adapt its use to pept ...
bacteria, etc ; Fusobacterium necrophorum; abscess; infectious diseases; Show all 4 Subjects
Abstract:
... F. necrophorum, a gram-negative obligate anaerobe, causes pharyngotonsillitis, peritonsillar abscess and the Lemierre Syndrome as well as other significant infections. Clinical information on this bacterium has increased dramatically over the past 20 years, yet no standard guidance exists for treating these infections. While data support F. necrophorum as a cause of pharyngotonsillitis, no consens ...
Gram-positive bacteria, etc ; Bacillus subtilis; copper; peptidoglycans; Show all 4 Subjects
Abstract:
... In the original paper, Chang and co-workers describe the contact killing of Bacillus subtilis, a Gram-positive bacterium, on copper-containing substrates and offer a mechanism for its accomplishment. The present Comment offers support for that mechanism and adds a necessary initial step, the degradation of the overlying peptidoglycan lattice. Degradation is necessary because the lattice is too thi ...
Bacillus (bacteria), etc ; Pseudomonas; bioremediation; biosurfactants; petroleum; pollution; Show all 6 Subjects
Abstract:
... Increasing soil petroleum hydrocarbons (PHs) pollution have caused world-wide concerns. The removal of PHs from soils mainly involves physical, chemical, biological processes and their combinations. To date, most reviews in this field based on research articles, but limited papers focused on the integration of remediation technologies from the perspective of patents. In this study, 20-years Chines ...
soil bacteria, etc ; climate; soil; soil biology; China; Show all 5 Subjects
Abstract:
... It is well-known that climate warming influences soil microbial communities. The effects are usually a comprehensive consequence of the direct and indirect effects of plants. Yet how plants influence the responses of soil microbes to climate warming remains largely unknown. In this study, a field warming experiment using infrared heaters was conducted on the eastern Tibetan Plateau to investigate ...
Jia-Xuan Yan; Qihao Wu; Eric J. N. Helfrich; Marc G. Chevrette; Doug R. Braun; Heino Heyman; Gene E. Ananiev; Scott R. Rajski; Cameron R. Currie; Jon Clardy; Tim S. Bugni
Bacillus (bacteria), etc ; antibacterial properties; biochemical pathways; bioinformatics; glycolysis; Show all 5 Subjects
Abstract:
... Chemical investigations of a marine sponge-associated Bacillus revealed six new imidazolium-containing compounds, bacillimidazoles A–F (1–6). Previous reports of related imidazolium-containing natural products are rare. Initially unveiled by timsTOF (trapped ion mobility spectrometry) MS data, extensive HRMS and 1D and 2D NMR analyses enabled the structural elucidation of 1–6. In addition, a plaus ...
rhizosphere bacteria, etc ; plant development; rare species; rhizosphere; watermelons; Show all 5 Subjects
Abstract:
... Rare bacteria in rhizospheres from natural watermelon vs chimeric watermelon were investigated to understand the rare rhizobacteria assembling processes along with plant development and effects of rare species on functional stability. Over 80% of the total OTUs were defined as rare taxa (i.e., transient, permanent, and conditionally rare) in the rhizosphere. Among these three rarities, transient r ...
bacteria, etc ; 5-methylcytosine; DNA; chromatin; epigenetics; mammals; mutants; Show all 7 Subjects
Abstract:
... 5-Methylcytosine (mC) and 5-hydroxymethylcytosine (hmC), the two main epigenetic modifications of mammalian DNA, exist in symmetric and asymmetric combinations in the two strands of CpG dyads. However, revealing such combinations in single DNA duplexes is a significant challenge. Here, we evolve methyl-CpG-binding domains (MBDs) derived from MeCP2 by bacterial cell surface display, resulting in th ...