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61,005 resultsShowing papers similar to The effects of biosolid microplastics on rhizosphere respiration of root exudates in Glycine max
ClearMicroplastics affect soybean rhizosphere microbial composition and function during vegetative and reproductive stages
Researchers conducted a 70-day greenhouse experiment to evaluate how four types of microplastics affect soybean rhizosphere bacterial communities in two soil types. The study found that polyamide microplastics consistently altered bacterial diversity and nitrogen cycling functions, while other plastic types had shorter-term effects, suggesting that different microplastics pose varying risks to agricultural soil microbial ecosystems.
Effects of polyethylene microplastics on the microbial community structure of maize rhizosphere soil
Researchers investigated how polyethylene microplastics from agricultural films affect the microbial communities in crop root zones (rhizosphere), finding shifts in bacterial diversity and function. Disrupting soil microbiomes through microplastic contamination could have downstream effects on soil fertility and crop health.
Effects of microplastics on common bean rhizosphere bacterial communities
Researchers studied how polyethylene and biodegradable microplastics affect bacterial communities in the root zone of common beans. Both types of microplastics significantly altered the diversity and composition of rhizosphere bacteria, with biodegradable microplastics inducing more distinctive changes than conventional polyethylene at higher concentrations.
Root traits of soybeans exposed to polyethylene films, polypropylene fragments, and biosolids
Researchers grew soybeans in soil amended with polyethylene film or polypropylene fragment microplastics at realistic biosolid-application concentrations and tracked root development weekly for 11 weeks. Polyethylene increased root length and lateral branching while polypropylene at high concentrations reduced root growth, with both plastic types causing plants to reach maturity up to two weeks earlier than controls.
[Effect of Low-density Polyethylene Microplastics on Soybean-soil-microbial System].
A pot experiment explored how different concentrations of low-density polyethylene microplastics affect soybean plants, the soil they grow in, and the microbial communities in that soil. Higher microplastic concentrations inhibited soybean growth, reduced soil enzyme activity, and altered microbial diversity in ways that could impair soil fertility. As microplastic contamination of agricultural soils continues to grow, these findings suggest real risks to food crop productivity and soil ecosystem health.
Root traits and rhizosphere responses as emerging bioindicators of microplastic pollution in agricultural soils: A review
This review examines how microplastic pollution in agricultural soils disrupts root growth, nutrient uptake, and the beneficial interactions between plant roots and soil microbes. Researchers found that microplastics can alter root exudation patterns, change soil structure, and shift microbial communities around roots in ways that may impair crop productivity. The study proposes that root traits and rhizosphere responses could serve as early warning indicators of microplastic contamination in farmland.
Microplastics affect the nitrogen nutrition status of soybean by altering the nitrogen cycle in the rhizosphere soil
Researchers investigated how three types of microplastics — polystyrene, polyethylene, and polyvinyl chloride — affect soybean growth by altering nitrogen cycling in the root-zone soil. They found that polyethylene and polystyrene promoted nitrogen availability and soybean growth, while polyvinyl chloride disrupted the nitrogen cycle, reduced beneficial soil microorganisms, and inhibited plant growth. The study suggests that different types of microplastics can have opposing effects on crop nutrition through their impact on soil microbial communities.
Sub-micron microplastics affect nitrogen cycling by altering microbial abundance and activities in a soil-legume system
Researchers found that very small (sub-micron) polyethylene and polypropylene microplastics in soil significantly altered nitrogen cycling by changing the abundance and activity of bacteria around soybean roots. While the microplastics did not affect plant growth directly, they increased nitrogen uptake and shifted the balance of nitrogen-processing bacteria. These hidden changes to soil chemistry could have long-term effects on agricultural productivity and the nutritional quality of crops.
Potential impacts of polyethylene microplastics and heavy metals on Bidens pilosa L. growth: Shifts in root-associated endophyte microbial communities
Researchers found that polyethylene microplastics in soil contaminated with heavy metals significantly stunted plant growth, reducing root length by nearly 49% and increasing harmful reactive oxygen species in plant tissues. The microplastics also shifted the soil's microbial communities toward stress-resistant species, demonstrating how plastic pollution can disrupt the soil ecosystem that supports our food supply.
Impact of microplastics aerial deposition on rhizosphere soil ecology: the case study of tomato (Solanum lycopersicum) exposed to polyethylene
Researchers investigated the impact of aerial polyethylene microsphere deposition on tomato plants at concentrations of 10, 100, and 1000 mg/L, finding that while shoot biomass was unaffected, exposure significantly altered root metabolite profiles (increasing amino acids, decreasing fatty acids and organic acids) and shifted rhizosphere bacterial and fungal community composition.
Effects of polyethylene microplastics and cadmium co-contamination on the soybean-soil system: Integrated metabolic and rhizosphere microbial mechanisms
Researchers investigated how polyethylene microplastics and cadmium interact in soybean-soil systems and found that specific microplastic concentrations enhanced cadmium accumulation in roots under moderate contamination. Higher microplastic levels reduced beneficial soil bacteria like Sphingomonas and Bradyrhizobium and suppressed nitrogen-cycling functions. The study demonstrates that microplastics fundamentally alter heavy metal behavior through interconnected plant-metabolite-microbe interactions in agricultural soils.
Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil
Researchers tested how biodegradable microplastics from PBAT plastic film affect soybean and maize root growth and soil health. They found that higher concentrations of these microplastics in soil reduced root length, surface area, and biomass in soybean by up to 34%, while also altering key soil enzyme activities. The study suggests that even biodegradable plastic residues in agricultural soil may disrupt plant growth and nutrient cycling.
Polyethylene microplastics distinctly affect soil microbial community and carbon and nitrogen cycling during plant litter decomposition
Researchers measured how polyethylene microplastics affect soil microbial communities and carbon cycling in agricultural soils, finding that microplastic addition shifted microbial diversity and suppressed key carbon mineralization processes. The results suggest microplastic accumulation in farmland could impair soil carbon storage.
Polyethylene microplastics reduce microbe-driven multifunctionality in maize-soybean intercropping ecosystem
This greenhouse study examined how polyethylene, polypropylene, and polystyrene microplastics affect a maize-soybean intercropping system at concentrations up to 5% by weight. High PP concentrations reduced maize biomass by nearly 30%, while PS surprisingly increased it; microplastic presence generally disrupted soil microbial diversity and reduced overall ecosystem multifunctionality.
Effect of conventional and biodegradable microplastics on the soil-soybean system: A perspective on rhizosphere microbial community and soil element cycling
This study compared how conventional polyethylene microplastics and biodegradable alternatives (PBAT and PLA) affect soil bacteria and nutrient cycling in soybean fields. The biodegradable microplastics actually caused more harm to soybean growth than conventional ones, reducing shoot biomass by up to 34% and disrupting nitrogen availability in soil. This challenges the assumption that biodegradable plastics are always better for the environment and raises questions about their impact on agricultural productivity and food security.
Effects of polyethylene and polylactic acid microplastics on plant growth and bacterial community in the soil
Researchers compared the effects of regular polyethylene and biodegradable polylactic acid microplastics on soybean growth and soil bacteria. Surprisingly, the biodegradable microplastics caused more harm than conventional ones, significantly reducing root growth and altering soil bacterial communities important for nitrogen fixation. This finding challenges the assumption that biodegradable plastics are always safer for the environment and raises questions about their impact on food crops.
Polyethylene Microplastic Particles Alter the Nature, Bacterial Community and Metabolite Profile of Reed Rhizosphere Soils
Researchers found that polyethylene microplastic particles alter the bacterial community composition, soil environmental factors, and metabolite profiles of reed rhizosphere soils, with effects increasing at higher microplastic concentrations and showing distinct interactions with reed biomass.
Living in the plastic age - Different short-term microbial response to microplastics addition to arable soils with contrasting soil organic matter content and farm management legacy
Adding polyethylene or polypropylene microplastics to two agricultural soils did not severely disrupt overall microbial activity or nitrogen cycling, but polypropylene reduced microbial biomass, especially in the organically managed soil. The results suggest that soil management history influences how resilient soil microbiomes are to microplastic contamination.
Polyethylene microplastics alter soil microbial community assembly and ecosystem multifunctionality
Researchers studied how polyethylene microplastics at different concentrations affect soil microbial communities and overall ecosystem function in a maize growing system. They found that higher concentrations of microplastics shifted microbial community composition, reduced beneficial bacteria involved in nutrient cycling, and impaired multiple soil ecosystem functions simultaneously. The study suggests that microplastic contamination in agricultural soils can undermine the biological processes that support healthy crop growth.
Mitigation of microplastic toxicity in soybean by synthetic bacterial community and arbuscular mycorrhizal fungi interaction: Altering carbohydrate metabolism, hormonal transduction, and genes associated with lipid and protein metabolism
Researchers found that inoculating soybean plants with a combination of mycorrhizal fungi and beneficial bacteria helped protect them from microplastic-induced stress, improving biomass, seed quality, antioxidant defenses, and hormone balance. The study suggests that soil microbe communities could be harnessed as a sustainable strategy to help crops cope with growing microplastic contamination in agricultural soils.
Assessing Microplastic Contamination Effects on Soil Microbial Communities in Agricultural Land
This study sampled agricultural soils with varying degrees of microplastic contamination to assess effects on microbial diversity, abundance, and enzymatic activity, finding that higher microplastic concentrations reduced microbial diversity and suppressed nutrient-cycling enzyme activity.
Response of soil enzyme activities and bacterial communities to the accumulation of microplastics in an acid cropped soil
Researchers tested how polyethylene and polyvinyl chloride microplastics at different concentrations affect enzyme activity and bacterial communities in acidic agricultural soil. Both types of microplastics reduced the diversity of soil bacteria while stimulating certain enzymes related to nitrogen and phosphorus cycling. The findings suggest that microplastic accumulation in farmland may alter important soil biological processes, potentially affecting nutrient cycling and the breakdown of pollutants.
Biodegradable Microplastic-Driven Change in Soil pH Affects Soybean Rhizosphere Microbial N Transformation Processes
Researchers found that biodegradable microplastics made from polybutylene succinate (PBS) caused more harm to soil health than conventional polyethylene microplastics in soybean-growing systems. The biodegradable plastic acidified the soil, disrupted microbial communities responsible for nitrogen cycling, and impaired plant nutrient uptake. This challenges the assumption that biodegradable plastics are always safer for agricultural environments.
Rhizosphere microbial activities in response to combined effects of drought and microplastic
Researchers studied how combined drought stress and microplastic contamination affect rhizosphere microbial activities, finding that microplastics exacerbated drought-induced suppression of soil enzyme activities and altered microbial community structure around plant roots.