We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
[Effects of Tire Wear Particles on Seedling Growth of Kidney Bean （Phaseolus vulgaris L.） and Soil Antibiotic Resistance Gene Abundance].
Summary
Researchers studied how tire wear particles, a major source of microplastics, affect kidney bean seedling growth and antibiotic resistance genes in soil. The study found that tire wear particles impaired root development by up to 49% and fresh weight by up to 48%, while also significantly increasing the abundance of antibiotic resistance genes in soil, including high-risk genes linked to drug-resistant bacteria.
Tire wear particles （TWP）， a major source of microplastics （MPs）， are persistent environmental pollutants with notable toxicity. Although TWP pollution in soils has garnered increasing attention， most research has concentrated on aquatic environments， leaving gaps in understanding its effects on plants and co-occurring soil pollutants. This study examined the impact of TWP on plant growth and soil pollutants， specifically antibiotic resistance genes （ARGs）， using the kidney bean （Phaseolus vulgaris L.） as a model. The findings should enhance predictions and develop mitigation strategies for soil TWP risks. Pot experiments and qPCR analysis were conducted to assess the effects of TWP at concentrations of 0.1% and 1% on kidney bean growth and soil ARGs abundance， while evaluating the role of soil properties in regulating these interactions. TWP exposure impaired seedling growth， reducing root development by 31.35%-49.03% and fresh weight by 31.40%-48.33%. At 0.1% TWP， ARGs abundance in rhizosphere and non-rhizosphere soils increased significantly by 13.58% and 14.83%， respectively. At 1% TWP， the enhancement of ARGs abundance weakened， and ARGs in non-rhizosphere soil significantly decreased compared to that in the control. However， higher TWP concentrations led to a significant increase in high-risk genes such as aadE and tetO， indicating that TWP pollution intensified the ARGs risk in soil. Correlation and redundancy analyses revealed that TWP inhibited plant growth and increased the pollution level and health risks of soil ARGs by increasing soil conductivity and depleting nutrients like dissolved organic carbon. This study provides critical insights into the effects of TWP residues on plant growth and soil ARGs. This study's findings aim to offer a scientific basis for the assessment of ecological risks posed by the combined contamination of TWP and ARGs in agricultural soils.
Sign in to start a discussion.
More Papers Like This
Exposure to heavy metal and antibiotic enriches antibiotic resistant genes on the tire particles in soil
Researchers found that tire particles in soil accumulate antibiotic-resistant bacteria and antibiotic resistance genes, and that the presence of heavy metals or antibiotics in the soil further enriches these resistance genes on tire particle surfaces. The findings suggest that tire-derived microplastics in contaminated soils could serve as reservoirs for antibiotic resistance, with potential implications for human health.
Co-exposure to tire wear particles and nickel inhibits mung bean yield by reducing nutrient uptake
Researchers grew mung bean plants for a full lifecycle in soil contaminated with tire wear particles and nickel, finding that tire particles alone reduced crop yields by up to 52%. When combined with high levels of nickel, a heavy metal, yields dropped by as much as 88%. This study shows that tire-derived microplastics in agricultural soil can significantly reduce food production and, when mixed with other pollutants, the damage is far worse than either contaminant alone.
Integrating metabolomics and high-throughput sequencing to investigate the effects of tire wear particles on mung bean plants and soil microbial communities.
Tire wear particles at realistic concentrations (0.1-1.5% soil weight) inhibited mung bean growth, altered root metabolite profiles, and shifted soil microbial community structure, indicating that road-derived plastic contaminants can disrupt soil-plant systems in agricultural settings.
Tire abrasion particles negatively affect plant growth even at low concentrations and alter soil biogeochemical cycling
Researchers found that tire abrasion particles—a major source of microplastic pollution on land—negatively affected plant growth and disrupted soil nutrient cycling even at low concentrations. This is concerning because tire particles are shed in enormous quantities on roads and accumulate in roadside soils where plants grow.
Tire particles and its leachates: Impact on antibiotic resistance genes in coastal sediments
Researchers studied how tire particles and the chemicals they release affect antibiotic resistance genes in coastal sediment microorganisms. They found that both the physical particles and their chemical leachates increased the abundance of antibiotic resistance genes and altered microbial community structure. The findings suggest that tire wear pollution in coastal areas may contribute to the spread of antibiotic resistance in marine environments.