We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Bacillus subtilis, a promising bacterial candidate for trapping nanoplastics during water treatment
ClearBiological Responses of Bacillus subtilis toward Nanoplastics under Nutritional Stress in Freshwater Ecosystems
Researchers found that polystyrene nanoplastics are toxic to the bacterium Bacillus subtilis under nutrient-poor conditions typical of natural freshwater, with even very low concentrations (2 micrograms per liter) reducing bacterial growth during prolonged exposure. The bacteria initially defended themselves by secreting protective substances, but these defenses eventually failed, leading to irreversible cell death from membrane damage and oxidative stress.
Pseudomonas Stutzeri may alter the environmental fate of polystyrene nanoplastics by trapping them with increasing extracellular polymers
Researchers found that the denitrifying bacterium Pseudomonas stutzeri physically traps polystyrene nanoplastics within secreted extracellular polymers, which impairs bacterial growth and nitrogen removal gene expression while altering the particles' environmental fate and dispersal.
Determination of the ability of native potential probiotic lactobacillus strains in nanoplastic bioremoval in an in-vitro Model
Researchers tested 88 native probiotic Lactobacillus strains for their ability to bind and remove polystyrene nanoplastics in laboratory conditions, finding that a cocktail of three strains achieved up to 77% removal. The most effective strain, L. plantarum RP13, showed strong nanoplastic adhesion confirmed by microscopy imaging. The study suggests that certain probiotic bacteria may have potential as a biological approach to reducing nanoplastic exposure in the gastrointestinal tract.
Two plant-growth-promoting Bacillus species can utilize nanoplastics
Researchers discovered that two species of Bacillus bacteria, commonly used to promote plant growth in agriculture, can break down polystyrene nanoplastics by oxidizing them. While high doses of nanoplastics initially harmed the bacteria, both species recovered and grew normally over time. The findings point to a potential biological approach for cleaning up nanoplastic pollution in agricultural soils.
Biosorption of sub-micron-sized polystyrene microplastics using bacterial biofilms
Researchers found that bacterial biofilms, particularly from Acinetobacter species, can effectively remove sub-micron-sized polystyrene microplastics through biosorption, suggesting biofilm-based approaches as a potential biological method for microplastic remediation in aquatic environments.
Effects of unmodified and amine-functionalized polystyrene nanoplastics on nitrogen removal by Pseudomonas stutzeri: strain characteristics, extracellular polymers, and transcriptomics
Researchers investigated how two types of polystyrene nanoplastics — plain and amine-modified — affect the ability of bacteria to remove nitrogen from water, a process important for wastewater treatment. The amine-coated nanoplastics were found to be more disruptive than unmodified ones, altering the bacteria's cell surface, extracellular proteins, and gene expression. This matters because nanoplastics entering wastewater systems could undermine the biological processes that keep treated water safe to release into the environment.
Adsorption abilities and mechanisms of Lactobacillus on various nanoplastics
Researchers tested whether Lactobacillus, a common probiotic bacterium, could adsorb nanoplastic particles made of polypropylene, polyethylene terephthalate, and polystyrene. They found that the bacteria could efficiently bind all three types of nanoplastics through electrostatic interactions and hydrogen bonding on their cell surfaces. The study suggests that lactic acid bacteria may have potential as a biological method for reducing nanoplastic contamination in food.
Polystyrene microplastic degradation by a novel PGPR Bacillus spizizenii
Researchers discovered that a beneficial soil bacterium, Bacillus spizizenii, can break down polystyrene microplastics with nearly 86% efficiency over 30 days. Chemical analysis confirmed that the bacteria significantly altered the plastic's molecular structure, and microscopy showed visible surface degradation. The finding suggests that naturally occurring soil bacteria could potentially be harnessed as a biological tool for reducing microplastic pollution.
Removal of nanoplastics in water treatment processes: A review
This review examines technologies for removing nanoplastics from water, noting that conventional treatment processes effective for larger plastics often fail to capture these tiny particles. Researchers evaluated emerging methods including microbial degradation, membrane filtration, and photocatalysis, finding that combined approaches offer the best removal rates. The study highlights that more research is needed to develop practical, large-scale solutions for nanoplastic contamination in drinking water and wastewater.
Polystyrene microplastics interaction and influence on the growth kinetics and metabolism of tilapia gut probiotic Bacillus tropicus ACS1
Polystyrene microplastics were found to alter the gut microbiome of tilapia, disrupting the growth kinetics and metabolism of probiotic bacteria, with potential implications for fish health and aquaculture productivity.
Nanoplastics impacts on Thiobacillus denitrificans: Effects of size and dissolved organic matter
Researchers found that 100 nm polystyrene nanoplastics inhibited growth and denitrification ability of Thiobacillus denitrificans more than 350 nm particles, and that dissolved organic matter modulated nanoplastic bioavailability and toxicity in sewage systems.
Treatment of Synthetic Wastewater Containing Polystyrene (PS) Nanoplastics by Membrane Bioreactor (MBR): Study of the Effects on Microbial Community and Membrane Fouling
This study treated synthetic wastewater containing polystyrene nanoplastics using membrane bioreactor technology, evaluating removal efficiency across operational conditions and examining how nanoplastics affect biological treatment performance.
A novel bacterial combination for efficient degradation of polystyrene microplastics
Researchers tested three bacterial species, alone and in combinations, for their ability to break down polystyrene microplastics used as the sole food source. The combination of Stenotrophomonas maltophilia and Bacillus velezensis achieved the most impressive results, degrading 43.5 percent of the polystyrene in 60 days. The study suggests that carefully selected bacterial partnerships, rather than single species, may be more effective for biological degradation of plastic waste.
Adaptive responses of Bacillus subtilis underlie differential nanoplastic toxicity with implications for root colonization
Researchers found that nanoplastic toxicity to the beneficial soil bacterium Bacillus subtilis varies significantly depending on the bacteria's growth mode. The study suggests that nanoplastics can substantially limit the ability of plant growth-promoting bacteria to colonize roots, with implications for soil health and agricultural productivity in environments contaminated with plastic particles.
Responses of nitrogen removal under microplastics versus nanoplastics stress in SBR: Toxicity, microbial community and functional genes
Researchers compared the effects of microplastics versus nanoplastics on nitrogen removal in sequencing batch reactors used in wastewater treatment. The study found that microplastics had no significant effect on nitrogen removal, while high concentrations of nanoplastics impaired the process by disrupting microbial communities and functional gene expression. The results suggest that nanoplastics may pose a greater threat to biological wastewater treatment performance than microplastics.
Efficient biosorption of nanoplastics by food-derived lactic acid bacterium
Researchers identified a food-derived lactic acid bacterium, Leuconostoc mesenteroides CBA3656, that efficiently binds and removes nanoplastics across a wide range of conditions including varying pH, temperature, and concentrations. In animal experiments, the strain significantly enhanced fecal excretion of nanoplastics, suggesting it could serve as a promising microbial approach for reducing nanoplastic burden in intestinal environments.
In situ microplastics immobilization by bacterial cellulose-producing strain, Novacetimonas hansenii PA9
Scientists grew a bacteria strain that produces nano-scale cellulose fibers and found it could completely immobilize microplastic particles within 48 hours by entangling them in a natural fiber matrix, after which the cellulose could be broken down with enzymes to recover the trapped plastic. The approach uses biodegradable materials and avoids harsh chemicals, making it a potentially eco-friendly method for removing microplastics from water. Biologically based removal strategies are gaining interest as alternatives to energy-intensive filtration for addressing microplastic contamination in water systems.
Genomic and proteomic analysis of Bacillus subtilis as microplastic bioremediation agents
Researchers analyzed the genes and proteins of Bacillus subtilis bacteria to understand how this common soil microbe might be used to break down microplastics biologically. The genomic and proteomic analysis identified enzymes that could potentially degrade plastic polymers, advancing efforts to develop microbial bioremediation of plastic pollution.
Impact and microbial mechanism of continuous nanoplastics exposure on the urban wastewater treatment process
Researchers investigated the effects of continuous nanoplastic exposure on wastewater treatment over 200 days, finding that while total nitrogen removal was not significantly inhibited, nanoplastics altered microbial community composition and affected nitrification and denitrification processes.
Microplastics shaped performance, microbial ecology and community assembly in simultaneous nitrification, denitrification and phosphorus removal process
This study found that polystyrene and PVC microplastics disrupted the performance of wastewater treatment systems designed to remove nitrogen and phosphorus, reducing nitrogen removal by up to 10%. The microplastics altered microbial communities, decreased cooperation between beneficial bacteria, and blocked important biological pathways. Since wastewater treatment is a key barrier against pollution reaching drinking water, microplastic interference with these systems could indirectly increase human exposure to harmful contaminants.
The effects of microplastics and nanoplastics on nitrogen removal, extracellular polymeric substances and microbial community in sequencing batch reactor
Researchers found that polystyrene nanoplastics and microplastics impaired nitrogen removal in sequencing batch reactors by reducing denitrification rates, altering extracellular polymeric substances, and shifting microbial community composition in activated sludge.
Functional Evaluation of Bacillus subtilis DCP04 from Korean Fermented Soybean Paste: A Potential Probiotic Strain for Polyethylene Degradation and Adsorption
Researchers evaluated Bacillus subtilis DCP04, isolated from Korean fermented soybean paste, for its ability to adsorb and degrade polyethylene micro- and nanoplastics. The strain demonstrated meaningful adsorption and partial biodegradation activity, suggesting potential as a probiotic-based strategy for reducing plastic particle exposure.
Biodegradation of polyethylene (PE), polypropylene (PP), and polystyrene (PS) microplastics by floc-forming bacteria, Bacillus cereus strain SHBF2 isolated from a commercial aquafarm
Researchers found that a beneficial floc-forming bacterium, Bacillus cereus, isolated from a fish farm could break down polyethylene, polypropylene, and polystyrene microplastics when used as its sole carbon source. Over 60 days, the bacteria caused measurable weight loss and surface changes in the plastic particles, suggesting a potential biological approach to microplastic remediation in aquaculture settings.
Exposure to nanoplastic induces cell damage and nitrogen inhibition of activated sludge: Evidence from bacterial individuals and groups
Researchers exposed activated sludge in a wastewater treatment reactor to polystyrene nanoplastics at concentrations up to 10 mg/L over 30 days. They found that nanoplastic exposure caused cell membrane damage, increased oxidative stress, and significantly inhibited nitrogen removal processes. The study suggests that nanoplastic accumulation in wastewater treatment plants could compromise their ability to effectively process nitrogen-containing pollutants.