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JOURNAL OF HAZARDOUS MATERIALS
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Youming Dong et al.
Summary: This study explored the effects and mechanisms of PSMP and PTFE microplastics on As bioavailability in paddy soil. PSMP and PTFE inhibited root activity and reduced the abundance of certain bacteria, leading to decreased iron plaques on root surfaces and inhibited As uptake by rice. Additionally, PSMP and PTFE decreased hemoglobin content and inhibited the activities of starch synthase and pyrophosphorylase in rice grains, resulting in reduced starch accumulation and biomass. Ultimately, the physiological toxicity and adverse effects of PSMP, PTFE, and As led to decreased rice yield in co-contaminated soil.
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Fayuan Wang et al.
Summary: Microplastics have been found to widely exist in various soil types and can alter soil properties, fertility, and the availability of pollutants. This may pose a potential threat to plant performance, crop productivity, and global climate change. Comprehensive studies are needed to better understand the impacts of microplastics on soil ecosystems.
JOURNAL OF HAZARDOUS MATERIALS
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Xueying Feng et al.
Summary: This study investigated the impacts of different types of Microplastics (MPs) on Pb-Zn contaminated soil and found that MPs, especially at a dose of 2%, decreased the richness and diversity of bacterial communities, altered microbial community composition, and significantly affected soil properties and heavy metal availability. The effects were dependent on the type and dose of MPs.
JOURNAL OF HAZARDOUS MATERIALS
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Yingying Liu et al.
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JOURNAL OF HAZARDOUS MATERIALS
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Zhiqin Zhang et al.
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JOURNAL OF HAZARDOUS MATERIALS
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Yongming Luo et al.
Summary: This study investigated the uptake pathways and accumulation of nanoplastics in edible plants. It was found that polystyrene nanoparticles mainly accumulated in the roots of wheat and lettuce plants, with limited transfer to the shoots. Various techniques including scanning electron microscopy and inductively coupled plasma mass spectrometry were used to confirm the presence of nanoplastics in the plants.
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Quanlong Wang et al.
Summary: Microplastics have diverse impacts on soil ecosystems, potentially harming soil fauna and their ecological functions. Conversely, soil fauna can also influence microplastics, affecting their growth, reproduction, lifespan, and survival.
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(2022)
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Heather A. Leslie et al.
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Annkatrin Weber et al.
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Aiyun Guo et al.
Summary: The widespread use of antibiotics and plastic films in agriculture has led to new characteristics of soil pollution, with the coexistence of antibiotics and microplastics. This study investigates the combined effects of oxytetracycline and polyethylene microplastics on wheat seedling growth, rhizosphere bacterial communities, and soil metabolite profiles. The results show that the combination of 150 mg kg(-1) oxytetracycline and microplastic significantly reduced plant biomass and height, while promoting carotenoid content and peroxidase activity in wheat leaves. Additionally, specific genera of plant growth-promoting rhizobacteria (PGPR) were significantly decreased in soil exposed to oxytetracycline and polyethylene. The study also found that the combination of oxytetracycline and microplastic altered multiple metabolites in soil. These findings help to elucidate the potential mechanisms of phytotoxicity caused by the combination of oxytetracycline and polyethylene microplastic.
ENVIRONMENTAL POLLUTION
(2022)
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Srinidhi Sridharan et al.
Summary: Due to increasing concerns on global ecosystems and human health, the environmental risks posed by microplastics (MPs) and nanoplastics (NPs) have become an important topic of research. However, studies on these micro(nano)-plastics (NPs) have often treated them as a single entity instead of recognizing the diverse compositions and behaviors of different plastic polymers. Furthermore, there is limited understanding of the leachability and ecotoxicity of additives associated with these polymers.
SCIENCE OF THE TOTAL ENVIRONMENT
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Summary: Nanoplastics pose risks to the environment and human health. This review provides an overview of potential sources, exposure routes, and effects on cells, as well as approaches to minimize nanoplastic levels.
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Shuling Zhao et al.
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APPLIED SOIL ECOLOGY
(2022)
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Jun-Li Xu et al.
Summary: This systematic review summarizes the current knowledge on the biological effects of micro- and nanoplastics (MNPs) on human health based on mammalian systems. The majority of the studies focused on the effects of polystyrene MNPs, and most of them reported adverse health effects, including cytotoxicity, inflammatory response, and oxidative stress. Some studies investigated the factors influencing the toxicity of MNPs, such as size, concentration, and shape.
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Article
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Minling Gao et al.
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ENVIRONMENTAL POLLUTION
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Yuhang Lian et al.
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JOURNAL OF HAZARDOUS MATERIALS
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Jiahui Zhu et al.
Summary: The presence of microplastics in terrestrial systems has been proven by many studies. This study investigated the influence of different types of microplastics on the bacterial communities in rhizosphere soil. The results showed that the microplastics had varying effects on the alpha diversities of the microbiota, and different types of microplastics may have different biodegradation pathways. Additionally, the microplastics had different impacts on the functional categories of the bacterial communities.
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Sarawut Sangkham et al.
Summary: Microplastics and nanoplastics are emerging environmental pollutants that pose significant ecotoxicological concerns to humans and aquatic animals. However, there is still limited knowledge about the exposure routes and toxic effects of these particles on animal and human health. This review focuses on the potential exposure routes, human health impacts, and toxicity responses of microplastics/nanoplastics, based on studies conducted in vitro and in vivo experiments. It highlights ingestion, inhalation, and dermal contacts as major exposure routes, and identifies oxidative stress, cytotoxicity, DNA damage, inflammation, immune response, neurotoxicity, and metabolic disruption as serious health consequences.
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Huiyan Tong et al.
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SCIENCE OF THE TOTAL ENVIRONMENT
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Weizhen Cui et al.
Summary: Microplastics have adverse effects on earthworms, with higher concentrations and smaller sizes having greater impact. Earthworms selectively ingest microplastics, preferring those with smaller particle size and biodegradable compositions. Microplastics can also facilitate the accumulation of heavy metals and organic pollutants by earthworms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
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Yujie Zhou et al.
Summary: This study investigated the abundance and composition of microplastics in urban soil in Nanjing, China, and found that fibers and fragments were the main components of microplastics in the soil. The study identified primary factors affecting microplastic abundance and composition and identified five potential sources of microplastics. The findings provide novel insights for quantitative source appointment and regional ecological control of microplastics in urban soil.
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Pengfei Wu et al.
Summary: This article provides an overview of the presence and potential health impacts of microplastics in the biosphere, with a focus on inhalation and ingestion as the major exposure pathways. It discusses the absorption, distribution, metabolic toxicity, and excretion of microplastics in the human body, as well as the potential risks associated with them.
JOURNAL OF HAZARDOUS MATERIALS
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Biotechnology & Applied Microbiology
Lalina Maroof et al.
Summary: This study reported the LDPE-degrading bacterial strain Exiguobacterium sp. strain LM-IK2 isolated from plastic dumped soil, demonstrating its potential for LDPE degradation. The analysis showed slight surface disruption and chemical changes in LDPE films after treatment with the bacteria. Genetic analysis confirmed the presence of key genes responsible for LDPE degradation. Therefore, Exiguobacterium sp. strain LM-IK2 holds promise for LDPE bioremediation.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2022)
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Engineering, Environmental
Yu Wang et al.
Summary: Research shows that microplastics can enter plant leaves through foliar exposure and have an impact on plant physiology, with positively charged microplastics exhibiting greater toxicity compared to negatively charged microplastics. These findings are significant for understanding the effects of microplastics on plants and ecosystems.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
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Engineering, Environmental
LiYuan Chen et al.
Summary: This study investigates the spatial distributions, characteristics, and compositions of microplastics (MPs) in farmland soils in China. The study calculates the contributions of agricultural films, livestock and poultry manures, irrigation water, and air deposition to MPs in farmland. It also identifies influencing factors such as recovery method, plowing frequency, meteorological conditions, and soil properties that are significantly correlated with the abundances of MPs in agricultural soils.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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Bin Huang et al.
Summary: This study investigated the pollution characteristics of microplastics in cultivated soil in Yunnan Province, revealing high levels of microplastic abundance mainly derived from plastic mulch. Various morphologies of microplastics were found in soil, and they exhibited different degrees of aging due to environmental factors. The findings emphasize the importance of paying more attention to microplastic pollution in inland soil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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Antonio Ragusa et al.
Summary: The study revealed the presence of microplastic fragments in human placentas, with different shapes and possible origins from man-made coatings, paints, adhesives, etc.
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Minling Gao et al.
Summary: This study investigated the toxic effects of small and large polystyrene microplastics on lettuce under di-butyl phthalate stress. The results showed that microplastics, especially in combination with DBP, could decrease lettuce biomass, induce oxidative stress, and exacerbate subcellular damage. Additionally, PS adhered to root surfaces and caused physical blockage of root pores, leading to cell membrane and wall damage. Molecular docking revealed interactions between DBP and monobutyl phthalate with superoxide dismutase residues. Moreover, there was no statistical difference in phytotoxicity between nano- and microplastics on lettuce, with PS aggravating DBP-induced phytotoxicity.
ENVIRONMENTAL POLLUTION
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Liuwei Wang et al.
Summary: Tiny plastic particles, including microplastics (MPs) and nanoplastics (NPs), are considered emerging contaminants with formation mechanisms such as mechanical abrasion. Research on the environmental fate and ecosystem toxicity of NPs is limited compared to MPs, calling for further exploration in these areas.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
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Lingshi Yin et al.
Summary: Microplastics and nanoplastics are widely distributed in the environment, and the interactions between vascular plants and these plastics involve aspects such as adsorption, absorption, and phytotoxic effects. There are still knowledge gaps in the relationships between micro/nanoplastics and vascular plants, highlighting the need for further research in the future.
ENVIRONMENTAL POLLUTION
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Jie Yang et al.
Summary: The study revealed the presence of microplastics in agricultural soil, which originated from different types of sludge, especially municipal sludge. Long-term application of sludge led to the accumulation of microplastics in soil, highlighting the need for measures to reduce microplastic pollution in agricultural land.
ENVIRONMENTAL POLLUTION
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Guanghui Xu et al.
Summary: Research shows that different sizes of microplastics have diverse impacts on the accumulation and elimination of organic pollutants by earthworms, with larger sizes causing more severe DNA damage and increasing the accumulation of pollutants. Additionally, nano-size microplastics significantly inhibit the bacteria responsible for degrading pollutants in earthworms, leading to higher residual concentrations of pollutants.
JOURNAL OF HAZARDOUS MATERIALS
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Marta Potrykus et al.
Summary: Plastic waste in landfills can be inhabited by microorganisms from the ambient environment, potentially leading to accelerated degradation involving the formation of biofilm. Further research is needed to investigate the possible risk factors of plastic biodegradation in waste landfills.
SCIENCE OF THE TOTAL ENVIRONMENT
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Jiajun Duan et al.
Summary: This paper summarizes the weathering processes of microplastics in terrestrial and aquatic environments, highlighting the impact of weathering on plastic transport and distribution, as well as the different behaviors of MPs under different environmental conditions.
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Defu He et al.
Summary: Research has shown that micro(nano)plastics are widely present in agricultural soils, affecting plants negatively and potentially entering the human food chain through the soil-plant system.
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Haixiao Li et al.
Summary: Different crop roots have varying effects on the vertical migration of microplastics, with corn roots promoting upward movement and ryegrass roots showing strong retention ability for microplastics.
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Youming Dong et al.
Summary: Current research shows that microplastics can enter carrot roots and leaves, with arsenic (As) increasing the amount of microplastics entering the carrot tissue and cells, leading to reduced quality of carrots. The presence of As exacerbates the effects of microplastics on carrots, posing greater health risks for consumers.
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Haifeng Sun et al.
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Chengjun Li et al.
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