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Algae (Raphidocelis subcapitata) mitigate combined toxicity of microplastic and lead on Ceriodaphnia dubia

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Frontiers of Environmental Science & Engineering 2020年第6期14卷 65-74页

作者： Xuesong Liu Jianmin Wang Department o f Civil Architectural and Environmental EngineeringMissouri University of Science and TechnologyRollaMO 65409USA The Center for Research in Energy and Environment(CREE) Missouri University of Science and TechnologyRollaMO 65409USA

microplastics(MPs)have been recognized as a new class of emerging contaminants in recent *** not only directly impact aquatic organisms,but also indirectly impact these organisms by interacting with background toxins in the ***,under realistic environmental conditions,algae,a natural food for aquatic organisms,may alter the toxicity pattern related to *** this research,we first examined the toxicity of MPs alone,and their effect on the toxicity of lead(Pb)on Ceriodaphnia dubia(***),a model aquatic organism for toxicity ***,we investigated the effect of algae on the combined toxicity of MPs and *** observed that,MPs significantly increased Pb toxicity,which was related to the increase in soluble Pb concentration and the intake of Pb-loaded MPs,both of which increased the accumulation of Pb in *** presence of algae mitigated the combined toxicity of MPs and Pb,although algae alone increased Pb ***,the toxicity mitigation through algae uptake came from mechanisms other than Pb accumulation,which will need further investigation.

关键词： microplastic Lead Toxicity Algae C.dubia

Fairy shrimp Branchinella kugenumaensis displays sensitivity to microplastic exposure

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Journal of Oceanology and Limnology 2024年第4期42卷 1186-1199页

作者： Yingying ZHANG Xinrui XU Wenbo SUN Yuting WANG Hui YANG College of Animal Science and Technology Yangzhou UniversityYangzhou 225009China

The increasing global concern regarding plastic pollution has prompted the research into the consequences of microplastics(MPs)on aquatic *** shrimp Branchinella kugenumaensis are freshwater planktonic organisms that have existed for 250 million *** study aimed to uncover the harmful effects of MPs,with a particular focus on their size variations(0.1,1,and 5μm),on the fairy *** focused on how MPs could significantly affect the survival and growth of fairy ***,larger MPs,especially those measuring 5μm,caused higher mortality rates and hindered the growth compared to smaller *** impact of MPs continued even subsequent to depuration in clean *** accumulation of MPs within the intestines of fairy shrimp resulted in intestinal blockages,disrupted excretory functions,and harmed intestinal epithelial *** at the histological,cellular,and molecular levels showed that exposure to MPs triggered necroptosis in intestinal cells,accompanied by alterations in pathways related to transcription,translation,digestion,energy metabolism,and neurological ***,the effects of MPs on gene expression and pathways varied based on particle size,with larger MPs having a more significant effect and causing a strong response in xenobiotic biodegradation and metabolism *** suggest that the increasing severity of MPs pollution could pose a significant threat to the survival of fairy *** study provided vital insights into the complex relationship between microplastics and aquatic organisms,and highlighted the urgent need to address the potential devastating impact of plastic pollution on freshwater ***,due to their rapid growth,strong reproductive capacity,sensitivity,and ease of cultivation,fairy shrimp hold the potential candidate to serve as a model organism for studying the effects of MPs and other pollutants on freshwater ecosystems.

关键词： microplastic freshwater ecosystem toxic effects fairy shrimp model organism

microplastic fiber and drought effects on plants and soil are only slightly modified by arbuscular mycorrhizal fungi

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Soil Ecology Letters 2022年第1期4卷 32-44页

作者： Anika Lehmann Eva FLeifheit Linshan Feng Joana Bergmann Anja Wulf Matthias C.Rillig Freie Universität Berlin Institut für Biologie14195 BerlinGermany Berlin-Brandenburg Institute of Advanced Biodiversity Research 14195 BerlinGermany Leibniz Centre for Agricultural Landscape Research(ZALF) 15374 MünchebergGermany

microplastics are increasingly recognized as a factor of global change. By altering soil inherentproperties and processes, ripple-on effects on plants and their symbionts can be ***, interactions with other factors of global change, such as drought, can influence theeffect of microplastics. We designed a greenhouse study to examine effects of polyester microfibers,arbuscular mycorrhizal (AM) fungi and drought on plant, microbial and soil responses. We found thatpolyester microfibers increased the aboveground biomass of Allium cepa under well-watered anddrought conditions, but under drought conditions the AM fungal-only treatment reached the highestbiomass. Colonization with AM fungi increased under microfiber contamination, however, plantbiomass did not increase when both AM fungi and fibers were present. The mean weight diameter ofsoil aggregates increased with AM fungal inoculation overall but decreased when the system wascontaminated with microfibers or drought stressed. Our study adds additional support to themounting evidence that microplastic fibers in soil can affect the plant–soil system by promoting plantgrowth, and favoring key root symbionts, AM fungi. Although soil aggregation is usually positivelyinfluenced by plant roots and AM fungi, and microplastic promotes both, our results show that plasticstill had a negative effect on soil aggregates. Even though there are concerns that microplastic mightinteract with other factors of global change, our study revealed no such effect for drought.

关键词： Arbuscular mycorrhizal fungi microplastic Soil aggregation Organic matter decomposition Drought Root traits

Environmental perspectives of microplastic pollution in the aquatic environment:a review

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Marine Life Science & Technology 2020年第4期2卷 414-430页

作者： Manzoor Ahmad Jia-Ling Li Pan-Deng Wang Wael NHozzein Wen-Jun Li State Key Laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)School of Life SciencesSun Yat-Sen UniversityGuangzhou 510275China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUriimqi 830011China Bioproducts Research Chair Zoology DepartmentCollege of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia Botany and Microbiology Department Faculty of ScienceBeni-Suef UniversityBeni-Suef 65211Egypt

microplastics are a highly concerning pollutant that have gained attention from the scientific community and other regulatory authorities due to their potential risks to organisms and *** are widespread in both terrestrial and aquatic ecosystems and can be found even in Antarctica and deep-sea *** ability to survive for long periods in the environment and their aptitude of inter-and intra-environmental translocation can prompt poor environmental *** adsorption of heavy metals and other toxic persistent organic pollutants is a further cause for ***,microplastics enable the development of a distinct microbial niche within an ecosystem,which could potentially impair ecosystem function by promoting the growth of selective microbial *** acquisition of metal-resistant,antibiotic-resistant genes,and the enrichment of antibiotic-resistant bacteria on microplastic surfaces have recently been ***,some studies have also reported the colonizahon of pathogenic bacterial strains such as Vibrio *** microplastic *** review aims to address the sources of microplastic pollution in the freshwater and marine environments and to discuss their potential functions in the environment.

关键词： microplastic Heavy metals Pollutant reservoir Distinct microbial habitat Gene exchange

Characteristics and sources of microplastic pollution in the water and sediments of the Jinjiang River Basin,Fujian Province,China

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China Geology 2022年第3期5卷 429-438页

作者： Ya-ci Liu Lin Wu Guo-wei Shi Sheng-wei Cao Ya-song Li Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesChina Geological SurveyMinistry of Natural ResourcesShijiazhuang 050061China Fujian Provincial Key Laboratory of Water Cycling and Eco-Geological Processes Xiamen 361000China

microplastic pollution is widely distributed from surface water to sediments to groundwater vertically and from land to the ocean *** study collected samples from surface water,groundwater,and sediments from upper to lower reaches and then to the estuary in 16 typical areas in the Jinjiang River Basin,Fujian Province,***,it determined the components and abundance of the microplastics and analyzed the possible microplastic sources through principal component analysis(PCA).As a result,seven main components of microplastics were detected,i.e.,polyethylene(PE),polypropylene(PP),polyvinyl chloride(PVC),polyethylene terephthalate(PET),polyformaldehyde(POM),nylon 6(PA6),and polystyrene(PS).Among them,PE and PP were found to have the highest proportion in the surface water and sediments and in the groundwater,*** surface water,groundwater,and sediments had average microplastic abundance of 1.6 n/L,2.7 n/L and 33.8 n/kg,*** microplastics in the sediments had the largest particle size,while those in the groundwater had the smallest particle *** with water bodies and sediments in other areas,those in the study area generally have medium-low-level microplastic *** pollution sources were determined according to PCA,i.e.,the dominant agriculture-forestry-fishery source,domestic wastewater,and industrial *** study can provide a scientific basis for the control of microplastics in rivers.

关键词： microplastic Surface water Groundwater Sediment Estuary Hydrogeological survey engineering Environment geological survey engineering Jinjiang River basin

Current status and cause analysis of microplastic pollution in sea areas in China

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China Geology 2022年第1期5卷 160-170页

作者： Wei Xiong Xi Mei Bei-bei Mi Hao Yang Zong-zhu Han Yong Zhang Wen-chao Lu Qingdao Institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdao 266071China College of Marine Geosciences Ocean University of ChinaQingdao 266100China State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences(Wuhan)Wuhan 430074China China Geological Survey Ministry of Natural ResourcesBeijing 100037China

As a new type of pollutants in the marine environment,microplastics have attracted increasing attention from scientific researchers and environmental protection workers in China and ***,for the microplastic pollution in sea areas in China,there are a very limited number of studies on its current status and few reviews of research on the *** paper reviews the surveys and researches of microplastics in the Bohai Sea,the Yellow Sea,the East China Sea,the South China Sea,and main estuaries in China carried out in recent years and proposes an outlook for future work,aiming to provide research suggestions and solutions for ecological protection against microplastic pollution in sea areas in *** studies have shown that microplastics are widely distributed in water bodies and sediments in sea areas and major estuaries in *** Pearl River Estuary,in the South China Sea suffers the most serious microplastic pollution,followed by the Bohai *** contrast,the microplastic pollution in the Yellow Sea and the East China Sea is comparatively *** in sea areas in China are mainly fibrous and are concentrated in offshore areas with developed industry and a dense population(especially around estuaries and bays).In addition,they are widely affected by human activities,such as shipping,aquaculture,industry,and sewage *** the authors suggest unifying measurement units and research methods and developing related standard systems to carry out researches related to ***,this paper also suggests further deepening researches on both the source-sink process of microplastics and nanoscale microplastics while enhancing the development and implementation of related policies,aiming to promote researches and control of microplastics in sea areas in China.

关键词： microplastic Marine pollution Distribution pattern Environmental geological survey engineering Bohai Sea Yellow Sea East China Sea South China Sea

microplastic in Commercial Fish in the Mediterranean Sea, the Red Sea and the Arabian Gulf. Part 1: The Mediterranean Sea

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Journal of Water Resource and Protection 2021年第8期13卷 563-587页

作者： Rana Zeeshan Habib Thies Thiemann Department of Biology College of Science United Arab Emirates University Al Ain Abu Dhabi UAE Department of Chemistry College of Science United Arab Emirates University Al Ain Abu Dhabi UAE

microplastic has become a ubiquitous environmental pollutant. microplastic in the oceans has detrimental effects on aquatic organisms. The presence of microplastic in marine fish heightens the chance of finding microplastic in seafood targeted for human consumption. The Mediterranean Sea is known to suffer from significant plastic pollution. It is also one of the most thoroughly studied water bodies in regard to microplastic contamination. The manuscript reviews the available literature of 2015-2021 on the presence of microplastic in commercially important fish species in the Mediterranean Sea. The literature data on microplastic content on beaches, in subtidal sediment, in the sediment from the ocean floor and in surface water of different regions of the Mediterranean Sea is reviewed, also.

关键词： Review Commercial Fish Mediterranean Sea microplastic Environmental Pollution

microplastic Can Decrease Enzyme Activities and Microbes in Soil

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Open Journal of Soil Science 2024年第1期14卷 1-12页

作者： Tazeen Fatima Khan Abdul Halim Farhad Sikder Department of Soil Water and Environment University of Dhaka Dhaka Bangladesh Center for Environmental and Geographic Information Services Dhaka Bangladesh

An in vitro study was conducted to investigate the impacts of microplastics on enzyme activities and soil bacteria. The study included four different treatments of microplastics including a control. Different levels of microplastics were applied to the soil ranging from 0% to 5%, to assess the impacts of microplastics on soil enzymes and subsequent soil bacteria. After 30 days of incubation, the soil samples were collected and growth parameters of bacteria were assessed. Activities of β-glucosidase, urease and dehydrogenase enzymes were also determined. Our results showed that the presence of microplastics in the soil significantly reduced bacterial population together with bacterial strains. The activities of β-glucosidase, urease and dehydrogenase enzymes were reduced significantly to approximately 32%, 40% and 50% in microplastics treated soils respectively. Concentration of microplastic has a role to play towards this direction;the higher the concentration of microplastic the greater is the impact on enzymes and soil bacteria. The present study on the microbial soil health vis-à-vis microplastic application indicates that the material can have negative effect on the soil bacterial population of and thus ultimately may jeopardize soil health and crop production.

关键词： microplastic Concentration Enzyme Activity Bacteria Crop Production

microplastic in an Arid Region: Identification, Quantification and Characterization on and Alongside Roads in Al Ain, Abu Dhabi, United Arab Emirates

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Journal of Environmental Protection 2022年第10期13卷 671-688页

作者： Rana Zeeshan Habib Tholkappiyan Ramachandran Fathalla Hamed Ruwaya Al Kindi Abdel-Hamid Ismail Mourad Thies Thieman Department of Biology College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates Department of Mechanical and Aerospace Engineering College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates Department of Physics College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates Department of Chemistry College of Science United Arab Emirates University Al Ain Abu Dhabi United Arab Emirates

microplastic content was analyzed in road dust, soils alongside roads and stormwater run-offs in Al Ain City, Abu Dhabi. Apart from tire wear material, fibers and degradation products of meso- and macroplastics such as plastic bags and plastic bottle tops were found to be the most dominant plastic microparticles. Speed bumps and artificial turf/lawns were also evaluated as potential sources of microplastics on and alongside roads. It was found that in arid regions Aeolian transport of microplastics may be more important than transport by water.

关键词： Road Wear microplastic Artificial Turf Glass Reflector Beads Speed Bumps