1
|
Huang JW, Sun YY, Li QS, Zhou HZ, Li YH, Fan XX, Wang JF. Increased risk of heavy metal accumulation in mangrove seedlings in coastal wetland environments due to microplastic inflow. Environ Pollut 2024; 349:123927. [PMID: 38582184 DOI: 10.1016/j.envpol.2024.123927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/02/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
The recovery phase of mangrove seedlings in coastal wetland ecosystems can be negatively affected by exposure to external pollutants. This study aimed to investigate the impact of microplastics (MPs) influx, specifically polystyrene (PS) and polymethyl methacrylate (PMMA), on the growth of Aegiceras corniculatum seedlings and their accumulation of heavy metals (HMs). PS and PMMA significantly increased HMs accumulation (up to 21.0-548%), particularly in the roots of seedlings, compared to the control treatment (CK). Additionally, elevated activities of malondialdehyde and catalase enzymes were observed in the leaves of seedlings, while peroxidase enzyme activity decreased. Topological analysis of the root sediment microbiota coexistence network revealed that the modularization data increased from 0.69 (CK treatment) to 1.07 (PS treatment) and 5.11 (PMMA treatment) under the combined stress of MPs and HMs. This suggests that the introduction of MPs intensifies microbial modularization. The primary cause of increased HMs accumulation in plants is the MPs input, which influences the secretion of organic acids by plants and facilitates the shift of HMs in sediment to bioavailable states. Furthermore, changes in microbial clustering may also contribute to the elevated HMs accumulation in plants. This study provides valuable insights into the effects of external pollutants on mangrove seedlings and offers new perspectives for the preservation and restoration of mangrove coastal wetlands.
Collapse
Affiliation(s)
- Jia-Wei Huang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Yun-Yun Sun
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Qu-Sheng Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Huan-Zhan Zhou
- Changsha Natural Resources Comprehensive Investigation Center, China Geological Survey, 410600, China
| | - Yi-Hao Li
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Guangzhou, 510655, China
| | - Xiang-Xiang Fan
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China
| | - Jun-Feng Wang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment and Climate, Jinan University, Guangzhou, 510632, China.
| |
Collapse
|
2
|
Iqbal S, Xu J, Arif MS, Worthy FR, Jones DL, Khan S, Alharbi SA, Filimonenko E, Nadir S, Bu D, Shakoor A, Gui H, Schaefer DA, Kuzyakov Y. Do Added Microplastics, Native Soil Properties, and Prevailing Climatic Conditions Have Consequences for Carbon and Nitrogen Contents in Soil? A Global Data Synthesis of Pot and Greenhouse Studies. Environ Sci Technol 2024. [PMID: 38701232 DOI: 10.1021/acs.est.3c10247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Microplastics threaten soil ecosystems, strongly influencing carbon (C) and nitrogen (N) contents. Interactions between microplastic properties and climatic and edaphic factors are poorly understood. We conducted a meta-analysis to assess the interactive effects of microplastic properties (type, shape, size, and content), native soil properties (texture, pH, and dissolved organic carbon (DOC)) and climatic factors (precipitation and temperature) on C and N contents in soil. We found that low-density polyethylene reduced total nitrogen (TN) content, whereas biodegradable polylactic acid led to a decrease in soil organic carbon (SOC). Microplastic fragments especially depleted TN, reducing aggregate stability, increasing N-mineralization and leaching, and consequently increasing the soil C/N ratio. Microplastic size affected outcomes; those <200 μm reduced both TN and SOC contents. Mineralization-induced nutrient losses were greatest at microplastic contents between 1 and 2.5% of soil weight. Sandy soils suffered the highest microplastic contamination-induced nutrient depletion. Alkaline soils showed the greatest SOC depletion, suggesting high SOC degradability. In low-DOC soils, microplastic contamination caused 2-fold greater TN depletion than in soils with high DOC. Sites with high precipitation and temperature had greatest decrease in TN and SOC contents. In conclusion, there are complex interactions determining microplastic impacts on soil health. Microplastic contamination always risks soil C and N depletion, but the severity depends on microplastic characteristics, native soil properties, and climatic conditions, with potential exacerbation by greenhouse emission-induced climate change.
Collapse
Affiliation(s)
- Shahid Iqbal
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- Honghe Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe 654400, Yunnan, China
| | - Jianchu Xu
- Honghe Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe 654400, Yunnan, China
- CIFOR-ICRAF China Program, World Agroforestry (ICRAF), Kunming 650201, Yunnan, China
| | - Muhammad Saleem Arif
- Department of Environmental Sciences, Government College University Faisalabad, Allama Iqbal Road, Faisalabad 38000, Pakistan
| | - Fiona R Worthy
- Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
| | - Davey L Jones
- School of Natural Sciences, Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, U.K
- Soils West, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - Sehroon Khan
- Department of Biotechnology, Faculty of Natural Sciences, University of Science and Technology Bannu, Main Campus Bannu-Township, Bannu 28100, Khyber Pakhtunkhwa, Pakistan
| | - Sulaiman Ali Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Ekaterina Filimonenko
- Center for Isotope Biogeochemistry, University of Tyumen, Volodarskogo Str., 6, Tyumen 625003, Russia
| | - Sadia Nadir
- Department of Biotechnology, Faculty of Natural Sciences, University of Science and Technology Bannu, Main Campus Bannu-Township, Bannu 28100, Khyber Pakhtunkhwa, Pakistan
| | - Dengpan Bu
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Awais Shakoor
- Teagasc, Environment, Soils and Land Use Department, Johnstown Castle, Co., Wexford Y35 Y521, Ireland
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2751, Australia
| | - Heng Gui
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- Honghe Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe 654400, Yunnan, China
| | - Douglas Allen Schaefer
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- Honghe Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe 654400, Yunnan, China
| | - Yakov Kuzyakov
- Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Goettingen, Goettingen 37077, Germany
- Peoples Friendship University of Russia (RUDN University), Moscow 117198, Russia
- Institute of Environmental SciencesKazan Federal University, Kazan 420049, Russia
| |
Collapse
|
3
|
Song X, Li C, Qiu Z, Wang C, Zeng Q. Ecotoxicological effects of polyethylene microplastics and lead (Pb) on the biomass, activity, and community diversity of soil microbes 1. Environ Res 2024:119012. [PMID: 38704010 DOI: 10.1016/j.envres.2024.119012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
Microplastics and heavy metals are ubiquitous and persistent contaminants that are widely distributed worldwide, yet little is known about the effects of their interaction on soil ecosystems. A soil incubation experiment was conducted to investigate the individual and combined effects of polyethylene microplastics (PE-MPs) and lead (Pb) on soil enzymatic activities, microbial biomass, respiration rate, and community diversity. The results indicate that the presence of PE-MPs notably reduced soil pH and elevated soil Pb bioavailability, potentially exacerbated the combined toxicity on the biogeochemical cycles of soil nutrients, microbial biomass carbon and nitrogen, and the activities of soil urease, sucrase, and alkaline phosphatase. Soil CO2 emissions increased by 7.9% with PE-MPs alone, decreased by 46.3% with single Pb, and reduced by 69.4% with PE-MPs and Pb co-exposure, compared to uncontaminated soils. Specifically, the presence of PE-MPs and Pb, individually and in combination, facilitated the soil metabolic quotient, leading to reduced microbial metabolic efficiency. Moreover, the addition of Pb and PE-MPs modified the composition of the microbial community, leading to the enrichment of specific taxa. Tax4Fun analysis showed the effects of Pb, PE-MPs and their combination on the biogeochemical processes and ecological functions of microbes were mainly by altering amino acid metabolism, carbohydrate metabolism, membrane transport, and signal transduction. These findings offer valuable insights into the ecotoxicological effects of combined PE-MPs and Pb on soil microbial dynamics, reveals key assembly mechanisms and environmental drivers, and highlights the potential threat of MPs and heavy metals to the multifunctionality of soil ecosystems.
Collapse
Affiliation(s)
- Xiliang Song
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Changjiang Li
- School of Environment Science & Spatial Informatics, China University of Mining & Technology, Xuzhou 221116, China
| | - Zhennan Qiu
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Chenghui Wang
- College of Life Sciences, Dezhou University, De'zhou, 253023, China
| | - Qiangcheng Zeng
- College of Life Sciences, Dezhou University, De'zhou, 253023, China.
| |
Collapse
|
4
|
He W, Huang J, Liu S, Yu H, Li E, Zhang W, Yi K, Zhang C, Pang H, Tan X. Effects of microplastics on sedimentary geochemical properties and microbial ecosystems combined with hydraulic disturbance. Sci Total Environ 2024; 923:171350. [PMID: 38432377 DOI: 10.1016/j.scitotenv.2024.171350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/05/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
Microplastics (MPs) pollution is widely investigated owing to its potential threats to river ecosystems. However, it remains unclear whether hydraulic disturbance deepens or mitigates the effects of MPs-contaminated sediments on the river environment. Herein, we studied the impact of sediment aggregates, organic matter, and enzyme activity, with emphasis on microbial community structure and function in sediments exposed to MPs (1 %, 5 %, and 10 % w/w) in conjunction with hydraulic disturbance. The experimental results showed that the influence of MPs on the sediment under hydraulic disturbance is more significant than that of static culture, especially for various environmental factors (MWD, MBC, and sucrase activity etc.). The proportions of the >0.05 mm-fraction aggregates increased from 74-76 % to 82-88 % in the sediment throughout the entire disturbance process. It has been found that the disturbance generally promotes the interaction between MPs and sediments. FAPROTAX analysis demonstrated that the disturbance reduced the difference in effects on microbial functional genes between the control group and the MPs-added groups by up to 10 times, suggesting that the effects of disturbance on MPs-contaminated sediments are relatively complex. This work provides new insights into the effects of hydraulic disturbance on physicochemical properties and microbial communities of MPs-contaminated sediment.
Collapse
Affiliation(s)
- Wenjuan He
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Si Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Hanbo Yu
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China; Key Laboratory of Dongting Lake Aquatic EcoEnvironmental Control and Restoration of Hunan Province, Changsha 410114, PR China
| | - Enjie Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Wei Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Kaixin Yi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Chenyu Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Haoliang Pang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Xiaofei Tan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| |
Collapse
|
5
|
Zhao X, Pei W, Qi Y, Li Y, Kong X. Enhanced aerobic granular sludge with micro-electric field for sulfamethoxazole degradation: Efficiency, mechanism, and microbial community. Chemosphere 2024; 354:141741. [PMID: 38499071 DOI: 10.1016/j.chemosphere.2024.141741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 03/15/2024] [Accepted: 03/16/2024] [Indexed: 03/20/2024]
Abstract
In this study, an aerobic granular sludge electrochemical system (AGES) was established by applying the micro-electric field to an aerobic granular sludge (AGS) reactor for the degradation of sulfamethoxazole (SMZ). Under the stimulation of the micro-electric field, the granulation of sludge was improved and the degradation rate of SMZ was enhanced. The features of granular sludge were characterized by scanning electron microscopy and X-ray diffraction. The optimal degradation rate of SMZ (88%) was obtained at the voltage of 3 V and the effective electrode area of 800 mm2. The results of kinetics analyses revealed that the degradation of SMZ by AGES can be fitted with the second-order kinetic equation, showing a degradation rate constant (k) of 0.001 L mol-1·min-1. The degradation products of SMZ in the AGES system were detected by LC-MS and their possible degradation routes were elucidated. The micro-electric field in the AGES system played a selective role in microbes' enrichment and growth, changing the diversity of the microbial community. Pseudomonas, Tolumonas, and Acidovorax were the dominant bacteria in the AGES system, which is accountable for the abatement of SMZ and nutrients. This work provides a green means for improving AGS and paves the way for applying the AGS process to real-world wastewater treatment.
Collapse
Affiliation(s)
- Xia Zhao
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Weina Pei
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Yihan Qi
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China.
| | - Yabin Li
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China.
| | - Xiuqin Kong
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| |
Collapse
|
6
|
Cao J, Chen Z, Wang L, Yan N, Lin J, Hou L, Zhao Y, Huang C, Wen T, Li C, Rahman SU, Liu Z, Qiao J, Zhao J, Wang J, Shi Y, Qin W, Si T, Wang Y, Tang K. Graphene enhances artemisinin production in the traditional medicinal plant Artemisia annua via dynamic physiological processes and miRNA regulation. Plant Commun 2024; 5:100742. [PMID: 37919898 PMCID: PMC10943550 DOI: 10.1016/j.xplc.2023.100742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/09/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
We investigated the effects of graphene on the model herb Artemisia annua, which is renowned for producing artemisinin, a widely used pharmacological compound. Seedling growth and biomass were promoted when A. annua was cultivated with low concentrations of graphene, an effect which was attributed to a 1.4-fold increase in nitrogen uptake, a 15%-22% increase in chlorophyll fluorescence, and greater abundance of carbon cycling-related bacteria. Exposure to 10 or 20 mg/L graphene resulted in a ∼60% increase in H2O2, and graphene could act as a catalyst accelerator, leading to a 9-fold increase in catalase (CAT) activity in vitro and thereby maintaining reactive oxygen species (ROS) homeostasis. Importantly, graphene exposure led to an 80% increase in the density of glandular secreting trichomes (GSTs), in which artemisinin is biosynthesized and stored. This contributed to a 5% increase in artemisinin content in mature leaves. Interestingly, expression of miR828 was reduced by both graphene and H2O2 treatments, resulting in induction of its target gene AaMYB17, a positive regulator of GST initiation. Subsequent molecular and genetic assays showed that graphene-induced H2O2 inhibits micro-RNA (miRNA) biogenesis through Dicers and regulates the miR828-AaMYB17 module, thus affecting GST density. Our results suggest that graphene may contribute to yield improvement in A. annua via dynamic physiological processes together with miRNA regulation, and it may thus represent a new cultivation strategy for increasing yield capacity through nanobiotechnology.
Collapse
Affiliation(s)
- Junfeng Cao
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhiwen Chen
- Engineering Research Center of Coal-based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China; National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology/CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Luyao Wang
- Hainan Institute, Zhejiang University, Yongyou Industry Park, Yazhou Bay Sci-Tech City, Sanya 572000, China; College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Ning Yan
- Shandong Provincial Key Laboratory of Dryland Farming Technology, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Jialing Lin
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology/CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Lipan Hou
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology/CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yongyan Zhao
- Hainan Institute, Zhejiang University, Yongyou Industry Park, Yazhou Bay Sci-Tech City, Sanya 572000, China; College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Chaochen Huang
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology/CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Tingting Wen
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology/CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Chenyi Li
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology/CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Saeed Ur Rahman
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zehui Liu
- Engineering Research Center of Coal-based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China
| | - Jun Qiao
- Engineering Research Center of Coal-based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China
| | - Jianguo Zhao
- Engineering Research Center of Coal-based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China
| | - Jie Wang
- Shandong Provincial Key Laboratory of Dryland Farming Technology, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Yannan Shi
- Institute of Millet Crops, Hebei Academy of Agriculture & Forestry Sciences/Hebei Branch of China National Sorghum Improvement Center, Shijiazhuang 050035, China
| | - Wei Qin
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Tong Si
- Shandong Provincial Key Laboratory of Dryland Farming Technology, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Yuliang Wang
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Kexuan Tang
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic and Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| |
Collapse
|
7
|
Gao Q, Lu X, Li J, Wang P, Li M. Impact of microplastics on nicosulfuron accumulation and bacteria community in soil-earthworms system. J Hazard Mater 2024; 465:133414. [PMID: 38181595 DOI: 10.1016/j.jhazmat.2023.133414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 01/07/2024]
Abstract
Microplastics (MPs) widely co-occur with various pollutants in soils. However, the data related to the impacts of MPs on terrestrial animal and microbial properties in pesticide-contaminated soils are few. In this study, the influence of MPs (0.01%, 0.1%, and 1%) on nicosulfuron concentrations in soil (10 µg/g) and earthworms were investigated, moreover, microbial community structure and diversity in soil and earthworm gut were also measured. After 30 days, the concentration of nicosulfuron in soil decreased to 1.27 µg/g, moreover, the residual concentration of nicosulfuron in soil (1%MPs and nicosulfuron) was only 44.8% of that in the single nicosulfuron treatment group. The accumulation of nicosulfuron in earthworms (1%MPs and nicosulfuron) was 7.37 µg/g, which was 1.82 times of that in the single nicosulfuron treatment group. In addition, 1% MPs decreased the richness and diversity of the soil and gut bacterial community in earthworms as well as altered microbial community composition, leading to the enrichment of specific microbial community. Our findings imply that MPs may change the migration of pesticides to terrestrial animal and as well as microbial diversity in earthworms and soil.
Collapse
Affiliation(s)
- Qingchuan Gao
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Xiaohui Lu
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Jinfeng Li
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Ping Wang
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Ming Li
- College of Forestry, Northeast Forestry University, Harbin 150040, China.
| |
Collapse
|
8
|
Li S, Zhong L, Zhang B, Fan C, Gao Y, Wang M, Xiao H, Tang X. Microplastics induced the differential responses of microbial-driven soil carbon and nitrogen cycles under warming. J Hazard Mater 2024; 465:133141. [PMID: 38056262 DOI: 10.1016/j.jhazmat.2023.133141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
The input of microplastics (MPs) and warming interfere with soil carbon (C) or nitrogen (N) cycles. Although the effects of warming and/or MPs on the cycles have been well studied, the biological coupling of microbial-driven cycles was neglected. Here, the synergistic changes of the cycles were investigated using batch incubation experiments. As results, the influences of MPs were not significant at 15, 20, and 25 °C, and yet, high temperature (i.e., 30 °C) reduced the respiration of high-concentration MPs-amended soil by 9.80%, and increased dissolved organic carbon (DOC) by 14.74%. In contrast, high temperature did not change the effect of MPs on N. The decrease of microbial biomass carbon (MBC) and the constant of microbial biomass nitrogen (MBN) indicated that microbial N utilization was enhanced, which might be attributed to the enrichments of adapted populations, such as Conexibacter, Acidothermus, and Acidibacter. These observations revealed that high temperature and MPs drove the differential response of soil C and N cycles. Additionally, the transcriptomic provided genomic evidence of the response. In summary, the high temperature was a prerequisite for the MPs-driven response, which underscored new ecological risks of MPs under global warming and emphasized the need for carbon emission reduction and better plastic product regulation.
Collapse
Affiliation(s)
- Shuang Li
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Linrui Zhong
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Baowei Zhang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Changzheng Fan
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Yuying Gao
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Mier Wang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Huannian Xiao
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Xiang Tang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China; Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China.
| |
Collapse
|
9
|
Hu M, Huang Y, Liu L, Ren L, Li C, Yang R, Zhang Y. The effects of Micro/Nano-plastics exposure on plants and their toxic mechanisms: A review from multi-omics perspectives. J Hazard Mater 2024; 465:133279. [PMID: 38141304 DOI: 10.1016/j.jhazmat.2023.133279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/05/2023] [Accepted: 12/13/2023] [Indexed: 12/25/2023]
Abstract
In recent years, plastic pollution has become a global environmental problem, posing a potential threat to agricultural ecosystems and human health, and may further exacerbate global food security problems. Studies have revealed that exposure to micro/nano-plastics (MPs/NPs) might cause various aspects of physiological toxicities, including plant biomass reduction, intracellular oxidative stress burst, photosynthesis inhibition, water and nutrient absorption reduction, cellular and genotoxicity, seed germination retardation, and that the effects were closely related to MP/NP properties (type, particle size, functional groups), exposure concentration, exposure duration and plant characteristics (species, tissue, growth stage). Based on a brief review of the physiological toxicity of MPs/NPs to plant growth, this paper comprehensively reviews the potential molecular mechanism of MPs/NPs on plant growth from perspectives of multi-omics, including transcriptome, metabolome, proteome and microbiome, thus to reveal the role of MPs/NPs in plant transcriptional regulation, metabolic pathway reprogramming, protein translational and post-translational modification, as well as rhizosphere microbial remodeling at multiple levels. Meanwhile, this paper also provides prospects for future research, and clarifies the future research directions and the technologies adopted.
Collapse
Affiliation(s)
- Mangu Hu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yongxiang Huang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Lin Liu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong 510640, China
| | - Lei Ren
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Chengyong Li
- School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Rongchao Yang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Yueqin Zhang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China.
| |
Collapse
|
10
|
Boughattas I, Vaccari F, Zhang L, Bandini F, Miras-Moreno B, Missawi O, Hattab S, Mkhinini M, Lucini L, Puglisi E, Banni M. Co-exposure to environmental microplastic and the pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) induce distinctive alterations in the metabolome and microbial community structure in the gut of the earthworm Eisenia andrei. Environ Pollut 2024; 344:123213. [PMID: 38158010 DOI: 10.1016/j.envpol.2023.123213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
Microplastics (MPs) are recognized as emergent pollutants and have become a significant environmental concern, especially when combined with other contaminants. In this study, earthworms, specifically Eisenia andrei, were exposed to MPs (at a concentration of 10 μg kg-1 of soil), herbicide 2,4-D (7 mg kg-1 of soil), and a combination of the two for 7 and 14 days. The chemical uptake in the earthworms was measured, and the bacterial and archaeal diversities in both the soil and earthworm gut were analyzed, along with the metabolomic profiles. Additionally, data integration of the two omics approaches was performed to correlate changes in gut microbial diversity and the different metabolites. Our results demonstrated that earthworms ingested MPs and increased 2,4-D accumulation. More importantly, high-throughput sequencing revealed a shift in microbial diversity depending on single or mixture exposition. Metabolomic data demonstrated an important modulation of the metabolites related to oxidative stress, inflammatory system, amino acids synthesis, energy, and nucleic acids metabolism, being more affected in case of co-exposure. Our investigation revealed the potential risks of MPs and 2,4-D herbicide combined exposure to earthworms and soil fertility, thus broadening our understanding of MPs' toxicity and impacts on terrestrial environments.
Collapse
Affiliation(s)
- Iteb Boughattas
- Laboratory of Ecotoxicology and Agrobiodiversity, Sousse University, Tunisia; Regional Field Crops Research Center of Beja, IRESA, Tunisia
| | - Filippo Vaccari
- Department for Sustainable Food Process, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Leilei Zhang
- Department for Sustainable Food Process, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Francesca Bandini
- Department for Sustainable Food Process, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Begoña Miras-Moreno
- Department for Sustainable Food Process, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Omayma Missawi
- Laboratory of Ecotoxicology and Agrobiodiversity, Sousse University, Tunisia
| | - Sabrine Hattab
- Laboratory of Ecotoxicology and Agrobiodiversity, Sousse University, Tunisia; Regional Research Centre in Horticulture and Organic Agriculture, Chott-Mariem, 4042 Sousse, Tunisia
| | - Marouane Mkhinini
- Laboratory of Ecotoxicology and Agrobiodiversity, Sousse University, Tunisia
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Edoardo Puglisi
- Department for Sustainable Food Process, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy.
| | - Mohamed Banni
- Laboratory of Ecotoxicology and Agrobiodiversity, Sousse University, Tunisia; Higher Institute of Biotechnology, Monastir University, Tunisia
| |
Collapse
|
11
|
Li Y, Wang J, Liu C, Wang L, Zhang P, Zhao Q, Xiong Z, Zhang G, Zhang W. Remediation of arsenic-contaminated soil using nanoscale schwertmannite synthesized by persulfate oxidation with carboxymethyl cellulose stabilization. Environ Res 2024; 244:117937. [PMID: 38109958 DOI: 10.1016/j.envres.2023.117937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023]
Abstract
Schwertmannite (SCH) is a promising material for adsorbing inorganic arsenic (As). We synthesized SCH nanoparticles (nano-SCH) via a modified chemical oxidation method and investigated the application of nano-SCH for the remediation of As-contaminated soils. The production of nano-SCH was successfully prepared using the persulfate oxidation method with carboxymethyl cellulose stabilization. The spherical structure of the nano-SCH particles had an average hydrodynamic diameter of 296 nm with high specific surface areas (108.9 m2/g). Compared with SCH synthesized via the H2O2 oxidation method, the percentage of Fe3+ precipitation in nano-SCH synthesis increased from 63.2% to 84.1%. The inorganic As adsorption capacity of nano-SCH improved by 2.27 times at solution pH = 6. After remediation of heavily As-contaminated soils by using 5% nano-SCH, the leachability of inorganic As rapidly decreased to 0.01% in 30 d. Correspondingly, the immobilization efficiencies of inorganic As in soil reached >99.9%. The inorganic As fractions in treated soil shifted from specifically and nonspecifically bound forms to amorphous and crystalline hydrous oxide-bound fractions. After treatment with 5% nano-SCH for 60 d, soil pH slightly decreased from 5.47 to 4.94; by contrast, soil organic matter content increased by 20.9%. Simultaneously, dehydrogenase concentration in soil decreased by 22.4%-34.7% during the remediation process. These changes in soil properties and As immobilization jointly decreased microbial activity and initiated the re-establishment of bacterial communities in the soil. In summary, this study presents a novel and high-productivity technology for nano-SCH synthesis and confirms the high As immobilization effectiveness of nano-SCH in the remediation of As-contaminated soils.
Collapse
Affiliation(s)
- Yujie Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China; Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Jia Wang
- College of Environment and Ecology, Chongqing University, Chongqing, 400044, People's Republic of China
| | - Chao Liu
- Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Long Wang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Peng Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Qianyu Zhao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Zhu Xiong
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Gaosheng Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China
| | - Wei Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, People's Republic of China.
| |
Collapse
|
12
|
Li Y, Wei Q, Zhao X, Qi Y, Guo M, Liu W. Degradation of sulfamethazine by microbial electrolysis cell with nickel-cobalt co-modified biocathode. Environ Sci Pollut Res Int 2024; 31:16497-16510. [PMID: 38321275 DOI: 10.1007/s11356-024-32313-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/29/2024] [Indexed: 02/08/2024]
Abstract
In this study, nickel-cobalt co-modified stainless steel mesh (Ni-Co@SSM) was prepared and used as the biocathode in microbial electrolysis cell (MEC) for sulfamethazine (SMT) degradation. The optimal electrochemical performance of the Ni-Co@SSM was obtained at the electrodeposition time of 600 s, electrodeposition current density of 20 mA cm-2, and nickel-cobalt molar ratio of 1:2. The removal of SMT in MEC with the Ni-Co@SSM biocathode (MEC-Ni-Co@SSM) was 82%, which increased by 30% compared with the conventional anaerobic reactor. Thirteen intermediates were identified and the potential degradation pathways of SMT were proposed. Proteobacteria, Firmicutes, Patescibacteria, Chloroflexi, Bacteroidetes, and Euryarchaeota are the dominant bacteria at the phylum level in the MEC-Ni-Co@SSM, which are responsible for SMT metabolism. Due to the electrical stimulation, there was an increase in the abundance of the metabolic function and the genetic information processing. This work provides valuable insight into utilizing MECs for effective treatment of antibiotic-containing wastewater.
Collapse
Affiliation(s)
- Yabin Li
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China
| | - Qian Wei
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China
| | - Xia Zhao
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China.
| | - Yihan Qi
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China
| | - Menghan Guo
- College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China
| | - Weijing Liu
- Lanzhou Sanmao Industrial LLC, Lanzhou, 730316, People's Republic of China
| |
Collapse
|
13
|
Dai Z, Zhang N, Ma X, Wang F, Peng J, Yang S, Cao W. Microplastics strengthen nitrogen retention by intensifying nitrogen limitation in mangrove ecosystem sediments. Environ Int 2024; 185:108546. [PMID: 38458116 DOI: 10.1016/j.envint.2024.108546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/10/2024]
Abstract
Mangrove wetlands are hotspots of the global nitrogen (N) cycle and important sinks of microplastics (MPs) due to their ecotone location between terrestrial and marine ecosystems. However, the effects of MPs on N cycle processes in mangrove ecosystems are still poorly understood. Thus, the present study assessed the impacts by adding MPs to mangrove sediments in a microcosm incubation experiment. The results showed that MPs increased dissolved organic carbon and nitrate but reduced ammonium contents in the sediments. MPs increased C:N stoichiometric and N:C-acquiring enzymatic ratios, indicating an intensified N limitation in mangrove sediments following exposure of MPs. MPs decreased microbial community diversity and shifted sediment microbial communities from r- to K-strategists, consistent with the intensified N limitation. In response, dissimilatory nitrate reduction to ammonium (DNRA) rates increased while nitrous oxide (N2O) production reduced suggesting more efficient N utilization in MPs treatments. The MPs with heteroatoms such as PLA- and PVC-MPs, increased DNRA rates by 67.5-78.7%, exhibiting a stronger impact than PE-MPs. The variation partitioning analysis revealed that the variances of DNRA rates and N2O production could be attributed to synergistic effects of physicochemical properties, nutrient limitation, and microbial community in mangrove sediments. Overall, this study provides pertinent insights into the impacts of MPs as a new carbon source on nutrient limitation and N turnover in mangrove ecosystems.
Collapse
Affiliation(s)
- Zetao Dai
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
| | - Ning Zhang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
| | - Xiao Ma
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
| | - Feifei Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
| | - Jiarui Peng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China
| | - Shengchang Yang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China.
| | - Wenzhi Cao
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of Environment and Ecology, Xiamen University, Xiamen, Fujian 361102, China.
| |
Collapse
|
14
|
Liu M, Wang C, Zhu B. Independent and combined effects of microplastics pollution and drought on soil bacterial community. Sci Total Environ 2024; 913:169749. [PMID: 38160843 DOI: 10.1016/j.scitotenv.2023.169749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/04/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Global terrestrial ecosystems are simultaneously threatened by multiple environmental pressures, with microplastics (MPs) pollution and drought possibly being the most pressing, both of which may have unanticipated effects on soil organisms. Here, we investigated the responses of diversity, composition and functions of soil bacterial community to MPs pollution (including two MPs types: polyethylene (PE) and polylactic acid (PLA); two MPs sizes: < 20 μm and <300 μm) and drought in microcosms. We found that only 20 μm PLA MPs significantly decreased soil bacterial diversity by 17.4 % and altered soil bacterial community composition, while PE MPs and 300 μm PLA MPs had no significant effects. The copiotrophic bacteria (i.e., Proteobacteria and Firmicutes) were enriched in the 20 μm PLA MPs pollution soils due to the enhanced dissolved organic carbon contents. Moreover, our results showed that the 20 μm PLA MPs also affected the potential phenotypes and functions of soil bacterial community, increasing the potentially pathogenic, stress-tolerant, containing mobile elements and forming biofilms phenotypes, and promoting membrane transport and signal transduction pathways. These results suggested that the effects of MPs on soil bacterial community varied depending on MPs types and sizes. However, drought significantly increased soil bacterial diversity by 10.3 % and affected soil bacterial community composition in the 20 μm PLA MPs pollution soils. We also found that drought inhibited the levels of potentially pathogenic, containing mobile elements and forming biofilms phenotypes in the 20 μm PLA MPs pollution soils. Taken together, these findings reveal that drought may alleviate the adverse effects of MPs pollution on soil bacterial community, which enhances our understanding of the interactive effects of multiple global change factors on agroecosystem functions.
Collapse
Affiliation(s)
- Mengli Liu
- Institute of Ecology, College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
| | - Chong Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Biao Zhu
- Institute of Ecology, College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China.
| |
Collapse
|
15
|
Xu Y, Ou Q, van der Hoek JP, Liu G, Lompe KM. Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments. Environ Sci Technol 2024; 58:991-1009. [PMID: 38166393 PMCID: PMC10795193 DOI: 10.1021/acs.est.3c07035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 01/04/2024]
Abstract
Micro- and nanoplastics (MNPs) are attracting increasing attention due to their persistence and potential ecological risks. This review critically summarizes the effects of photo-oxidation on the physical, chemical, and biological behaviors of MNPs in aquatic and terrestrial environments. The core of this paper explores how photo-oxidation-induced surface property changes in MNPs affect their adsorption toward contaminants, the stability and mobility of MNPs in water and porous media, as well as the transport of pollutants such as organic pollutants (OPs) and heavy metals (HMs). It then reviews the photochemical processes of MNPs with coexisting constituents, highlighting critical factors affecting the photo-oxidation of MNPs, and the contribution of MNPs to the phototransformation of other contaminants. The distinct biological effects and mechanism of aged MNPs are pointed out, in terms of the toxicity to aquatic organisms, biofilm formation, planktonic microbial growth, and soil and sediment microbial community and function. Furthermore, the research gaps and perspectives are put forward, regarding the underlying interaction mechanisms of MNPs with coexisting natural constituents and pollutants under photo-oxidation conditions, the combined effects of photo-oxidation and natural constituents on the fate of MNPs, and the microbiological effect of photoaged MNPs, especially the biotransformation of pollutants.
Collapse
Affiliation(s)
- Yanghui Xu
- Key
Laboratory of Drinking Water Science and Technology, Research Centre
for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, P. R. China
- Section
of Sanitary Engineering, Department of Water Management, Faculty of
Civil Engineering and Geosciences, Delft
University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
| | - Qin Ou
- Key
Laboratory of Drinking Water Science and Technology, Research Centre
for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, P. R. China
- Section
of Sanitary Engineering, Department of Water Management, Faculty of
Civil Engineering and Geosciences, Delft
University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
| | - Jan Peter van der Hoek
- Section
of Sanitary Engineering, Department of Water Management, Faculty of
Civil Engineering and Geosciences, Delft
University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
- Waternet,
Department Research & Innovation,
P.O. Box 94370, 1090 GJ Amsterdam, The Netherlands
| | - Gang Liu
- Key
Laboratory of Drinking Water Science and Technology, Research Centre
for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, P. R. China
- Section
of Sanitary Engineering, Department of Water Management, Faculty of
Civil Engineering and Geosciences, Delft
University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
- University
of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Kim Maren Lompe
- Section
of Sanitary Engineering, Department of Water Management, Faculty of
Civil Engineering and Geosciences, Delft
University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
| |
Collapse
|
16
|
Chen C, Deng Y, Liu Q, Lai H, Zhang C. Effects of microplastics on cold seep sediment prokaryotic communities. Environ Pollut 2024; 341:123008. [PMID: 38006990 DOI: 10.1016/j.envpol.2023.123008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/17/2023] [Accepted: 11/18/2023] [Indexed: 11/27/2023]
Abstract
Cold seep sediments are an important reservoir of microplastics (MPs) whose impact on the structure and function of prokaryotic community is not well understood. In this study, the impact of 0.2% and 1% (w/w) polyethylene (PE), polystyrene (PS), and polypropylene (PP) MPs on the cold seep sediment prokaryotic community was investigated in a 120-day laboratory incubation experiment. The results revealed that exposure to MPs altered sedimentary chemical properties in a type- and concentration-dependent manner. Furthermore, MPs significantly altered the structure of bacterial community, with some MPs degradation-associated bacterial phyla significantly increasing (p < 0.05). However, in the case of archaea, the changes in the structure of microbial community were less pronounced (p > 0.05). Co-occurrence network analysis revealed that the addition of MPs reduced the network complexity, while PICRUSt2 and FAPROTAX analyses suggested that 0.2% PP and 1% PS MPs had the most significant effects on the nitrogen and carbon cycles (p < 0.05). Overall, this study provides new insights into the effects of MPs on the structure and function of microbial communities in cold seep sediments.
Collapse
Affiliation(s)
- Chunlei Chen
- Institute of Marine Biology and pharmacology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China
| | - Yinan Deng
- Guangzhou Marine Geological Survey, Guangzhou, 510075, Guangdong, China
| | - Qing Liu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541000, Guangxi, China
| | - Hongfei Lai
- Guangzhou Marine Geological Survey, Guangzhou, 510075, Guangdong, China
| | - Chunfang Zhang
- Institute of Marine Biology and pharmacology, Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China.
| |
Collapse
|
17
|
Xiang P, Liao W, Xiong Z, Xiao W, Luo Y, Peng L, Zou L, Zhao C, Li Q. Effects of polystyrene microplastics on the agronomic traits and rhizosphere soil microbial community of highland barley. Sci Total Environ 2024; 907:167986. [PMID: 37879483 DOI: 10.1016/j.scitotenv.2023.167986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/13/2023] [Accepted: 10/14/2023] [Indexed: 10/27/2023]
Abstract
This study investigated the influence of polystyrene microplastics (MPs) with two different particle sizes (<1 mm, 1-5 mm) and three concentrations (1 g/m2, 10 g/m2, 50 g/m2), as well as added degrading bacteria, on the agronomic traits of highland barley and the bacterial communities in the rhizosphere soil. Results revealed that the small particle size treatment had a significant effect on reducing the 1000-grain weight of highland barley, while the large particle size treatment had an effect on reducing the spike length, width, and awn length (P < 0.05). Additionally, the MP treatment was found to significantly reduce the rhizosphere soil bacterial diversity and richness, including the Shannon, Chao1, observed species, and dominance indices (P < 0.05). Interestingly, the inoculation treatment also reduced microbial diversity, though the microbial diversity after treatment was similar to that of the control community structure, indicating its regulating effect on the soil microbial community. The abundance of Domibacillus, Pedosphaeraceae, and Enterococcus decreased due to the MP treatment, whereas Achromobacter, Massilia, Ralstonia, and Nitrosospira increased (P < 0.05). Furthermore, functional prediction indicated that MP treatment resulted in the enrichment of microbial functions, such as an AraC-type DNA-binding domain, etc. The microbial communities exposed to different sizes and concentrations of MPs had their own unique functions in response to the effects of the MPs. This study provided novel insights into the effects of different particle sizes and concentrations of MPs on the rhizosphere microbial community and agronomic traits of highland barley. It could be used to improve the understanding of the impact of MPs on the rhizosphere soil microecology and enhance bioremediation of MPs.
Collapse
Affiliation(s)
- Peng Xiang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Wenlong Liao
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Zhuang Xiong
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Wenqi Xiao
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Yingyong Luo
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Lianxin Peng
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Changsong Zhao
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China.
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China.
| |
Collapse
|
18
|
Bodor A, Feigl G, Kolossa B, Mészáros E, Laczi K, Kovács E, Perei K, Rákhely G. Soils in distress: The impacts and ecological risks of (micro)plastic pollution in the terrestrial environment. Ecotoxicol Environ Saf 2024; 269:115807. [PMID: 38091673 DOI: 10.1016/j.ecoenv.2023.115807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/23/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024]
Abstract
Plastics have revolutionised human industries, thanks to their versatility and durability. However, their extensive use, coupled with inadequate waste disposal, has resulted in plastic becoming ubiquitous in every environmental compartment, posing potential risks to the economy, human health and the environment. Additionally, under natural conditions, plastic waste breaks down into microplastics (MPs<5 mm). The increasing quantity of MPs exerts a significant burden on the soil environment, particularly in agroecosystems, presenting a new stressor for soil-dwelling organisms. In this review, we delve into the effects of MP pollution on soil ecosystems, with a specific attention to (a) MP transport to soils, (b) potential changes of MPs under environmental conditions, (c) and their interaction with the physical, chemical and biological components of the soil. We aim to shed light on the alterations in the distribution, activity, physiology and growth of soil flora, fauna and microorganisms in response to MPs, offering an ecotoxicological perspective for environmental risk assessment of plastics. The effects of MPs are strongly influenced by their intrinsic traits, including polymer type, shape, size and abundance. By exploring the multifaceted interactions between MPs and the soil environment, we provide critical insights into the consequences of plastic contamination. Despite the growing body of research, there remain substantial knowledge gaps regarding the long-term impact of MPs on the soil. Our work underscores the importance of continued research efforts and the adoption of standardised approaches to address plastic pollution and ensure a sustainable future for our planet.
Collapse
Affiliation(s)
- Attila Bodor
- Department of Biotechnology, University of Szeged, Szeged, Hungary; Institute of Biophysics, HUN-REN Biological Research Centre, Szeged, Hungary.
| | - Gábor Feigl
- Department of Plant Biology, University of Szeged, Szeged, Hungary
| | - Bálint Kolossa
- Department of Biotechnology, University of Szeged, Szeged, Hungary
| | - Enikő Mészáros
- Department of Plant Biology, University of Szeged, Szeged, Hungary
| | - Krisztián Laczi
- Department of Biotechnology, University of Szeged, Szeged, Hungary
| | - Etelka Kovács
- Department of Biotechnology, University of Szeged, Szeged, Hungary
| | - Katalin Perei
- Department of Biotechnology, University of Szeged, Szeged, Hungary
| | - Gábor Rákhely
- Department of Biotechnology, University of Szeged, Szeged, Hungary; Institute of Biophysics, HUN-REN Biological Research Centre, Szeged, Hungary
| |
Collapse
|
19
|
Liu Z, Wen J, Liu Z, Wei H, Zhang J. Polyethylene microplastics alter soil microbial community assembly and ecosystem multifunctionality. Environ Int 2024; 183:108360. [PMID: 38128384 DOI: 10.1016/j.envint.2023.108360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023]
Abstract
Although pervasive microplastics (MPs) pollution in terrestrial ecosystems invites increasing global concern, impact of MPs on soil microbial community assembly and ecosystem multifunctionality received relatively little attention. Here, we manipulated a mesocosm experiment to investigate how polyethylene MPs (PE MPs; 0, 1%, and 5%, w/w) influence ecosystem functions including plant production, soil quality, microbial community diversity and assembly, enzyme activities in carbon (C), nitrogen (N) and phosphorus (P) cycling, and multifunctionality in the maize-soil continuum. Results showed that PE MPs exerted negligible effect on plant biomass (dry weight). The treatment of 5% PE MPs caused declines in the availability of soil water, C and P, whereas enhanced soil pH and C storage. The activity of C-cycling enzymes (α/β-1, 4-glucosidase and β-D-cellobiohydrolase) was promoted by 1% PE MPs, while that of β-1, 4-glucosidase was inhibited by 5% PE MPs. The 5% PE MPs reduced the activity of N-cycling enzymes (protease and urease), whereas increased that of the P-cycling enzyme (alkaline phosphatase). The 5% PE MPs shifted soil microbial community composition, and increased the number of specialist species, microbial community stability and networks resistance. Moreover, PE MPs altered microbial community assembly, with 5% treatment decreasing dispersal limitation proportion (from 13.66% to 9.96%). Overall, ecosystem multifunctionality was improved by 1% concentration, while reduced by 5% concentration of PE MPs. The activity of α/β-1, 4-glucosidase, urease and protease, and ammonium-N content were the most important predictors of ecosystem multifunctionality. These results underscore that PE MPs can alter soil microbial community assembly and ecosystem multifunctionality, and thus development and implementation of practicable solutions to control soil MPs pollution become increasingly imperative in sustainable agricultural production.
Collapse
Affiliation(s)
- Ziqiang Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Jiahao Wen
- Guangdong Laboratory for Lingnan Modern Agriculture, Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Zhenxiu Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Hui Wei
- Guangdong Laboratory for Lingnan Modern Agriculture, Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Jiaen Zhang
- Guangdong Laboratory for Lingnan Modern Agriculture, Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China.
| |
Collapse
|
20
|
Kudzin MH, Piwowarska D, Festinger N, Chruściel JJ. Risks Associated with the Presence of Polyvinyl Chloride in the Environment and Methods for Its Disposal and Utilization. Materials (Basel) 2023; 17:173. [PMID: 38204025 PMCID: PMC10779931 DOI: 10.3390/ma17010173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024]
Abstract
Plastics have recently become an indispensable part of everyone's daily life due to their versatility, durability, light weight, and low production costs. The increasing production and use of plastics poses great environmental problems due to their incomplete utilization, a very long period of biodegradation, and a negative impact on living organisms. Decomposing plastics lead to the formation of microplastics, which accumulate in the environment and living organisms, becoming part of the food chain. The contamination of soils and water with poly(vinyl chloride) (PVC) seriously threatens ecosystems around the world. Their durability and low weight make microplastic particles easily transported through water or air, ending up in the soil. Thus, the problem of microplastic pollution affects the entire ecosystem. Since microplastics are commonly found in both drinking and bottled water, humans are also exposed to their harmful effects. Because of existing risks associated with the PVC microplastic contamination of the ecosystem, intensive research is underway to develop methods to clean and remove it from the environment. The pollution of the environment with plastic, and especially microplastic, results in the reduction of both water and soil resources used for agricultural and utility purposes. This review provides an overview of PVC's environmental impact and its disposal options.
Collapse
Affiliation(s)
- Marcin H. Kudzin
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Łódź, Poland; (M.H.K.); (D.P.); (N.F.)
- Circular Economy Center (BCG), Environmental Protection Engineering Research Group, Brzezińska 5/15, 92-103 Łódź, Poland
| | - Dominika Piwowarska
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Łódź, Poland; (M.H.K.); (D.P.); (N.F.)
- Doctoral School of Exact and Natural Sciences, University of Lodz, 21/23 Jana Matejki Str., 90-237 Łódź, Poland
- UNESCO Chair on Ecohydrology and Applied Ecology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Str., 90-232 Łódź, Poland
- European Regional Centre for Ecohydrology of the Polish Academy of Sciences, 3 Tylna Str., 90-364 Łódź, Poland
| | - Natalia Festinger
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Łódź, Poland; (M.H.K.); (D.P.); (N.F.)
- Circular Economy Center (BCG), Environmental Protection Engineering Research Group, Brzezińska 5/15, 92-103 Łódź, Poland
| | - Jerzy J. Chruściel
- Łukasiewicz Research Network—Lodz Institute of Technology, 19/27 Marii Sklodowskiej-Curie Str., 90-570 Łódź, Poland; (M.H.K.); (D.P.); (N.F.)
- Circular Economy Center (BCG), Environmental Protection Engineering Research Group, Brzezińska 5/15, 92-103 Łódź, Poland
| |
Collapse
|
21
|
Lu S, Hao J, Yang H, Chen M, Lian J, Chen Y, Brown RW, Jones DL, Wan Z, Wang W, Chang W, Wu D. Earthworms mediate the influence of polyethylene (PE) and polylactic acid (PLA) microplastics on soil bacterial communities. Sci Total Environ 2023; 905:166959. [PMID: 37696400 DOI: 10.1016/j.scitotenv.2023.166959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/25/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Abstract
There is a growing body of evidence that suggests that both biodegradable and conventional (non-degradable) microplastics (MP) are hazardous to soil health by affecting the delivery of key ecological functions such as litter decomposition, nutrient cycling and water retention. Specifically, soil fauna may be harmed by the presence of MPs while also being involved in their disintegration, degradation, migration and transfer in soil. Therefore, a comprehensive understanding of the interactions between MPs and soil fauna is essential. Here, we conducted a 120-day soil microcosm experiment applying polyethylene (PE) and polylactic acid (PLA), in the absence/presence of the earthworm Eisenia nordenskioldi to estimate the relative singular and combined impact of MPs and earthworms on the soil bacterial community. Our findings revealed contrasting effects of PE and PLA on the composition and diversity of soil bacteria. All treatments affected the community and network structure of the soil bacterial community. Compared to the control (no MPs or earthworms), PE decreased bacterial alpha diversity, while PLA increased it. Patescibacteria were found to be significantly abundant in the PE group whereas Actinobacteria and Gemmatimonadetes were more abundant in PE, and PLA and earthworms groups. The presence of earthworms appeared to mediate the impact of PE/PLA on soil bacteria, potentially through bacterial consumption or by altering soil properties (e.g., pH, aeration, C availability). Earthworm presence also appeared to promote the chemical aging of PLA. Collectively, our results provide novel insights into the soil-fauna-driven impact of degradable/nondegradable MPs exposure on the long-term environmental risks associated with soil microorganisms.
Collapse
Affiliation(s)
- Siyuan Lu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China
| | - Jiahua Hao
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China
| | - Hao Yang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China
| | - Mengya Chen
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China
| | - Jiapan Lian
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yalan Chen
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Robert W Brown
- School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Davey L Jones
- School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Zhuoma Wan
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China
| | - Wei Wang
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Wenjin Chang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China
| | - Donghui Wu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin 130117, China; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun 130024, China; Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun 130024, China; Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130117, China.
| |
Collapse
|
22
|
Zhang P, Wang J, Huang L, He M, Yang H, Song G, Zhao J, Li X. Microplastic transport during desertification in drylands: Abundance and characterization of soil microplastics in the Amu Darya-Aral Sea basin, Central Asia. J Environ Manage 2023; 348:119353. [PMID: 37866184 DOI: 10.1016/j.jenvman.2023.119353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/09/2023] [Accepted: 10/14/2023] [Indexed: 10/24/2023]
Abstract
Desertification and microplastic pollution are major environmental issues that impact the function of the ecosystem and human well-being of drylands. Land desertification may influence soil microplastics' abundance, transport, and distribution, but their distribution in the dryland deserts of Central Asia's Amu Darya-Aral Sea basin is unknown. Here, we investigated the abundance and distribution of microplastics in dryland desert soils from the Amu Darya River to the Aral Sea basin in Central Asia at a spatial scale of 1000 km and soil depths ranging from 0 to 50 cm. Microplastics were found in soils from all sample locations, with abundances ranging from 182 to 17841 items kg-1 and a median of 3369. Twenty-four polymers were identified, with polyurethane (PU, 37.3%), silicone resin (SR, 17.0%), and chlorinated polyethylene (CPE, 9.8%) accounting for 64.1% of all polymer types. The abundance of microplastics was significantly higher in deep (20-50 cm) soils than in surface (0-5, 5-20 cm) soils. The main morphological characteristics of the observed microplastics were small size (20-50 μm) and irregular particles with no round edges (mean eccentricity 0.65). The abundance was significantly and positively related to soil EC and TP. According to the findings, desertification processes increase the abundance of microplastic particles in soils and promote migration to deeper soil layers. Human activities, mainly grazing, may be the region's primary cause of desertification and microplastic pollution. Our findings provide new information on the diffusion of microplastics in drylands during desertification; these findings are critical for understanding and promoting dryland plastic pollution prevention and control.
Collapse
Affiliation(s)
- Peng Zhang
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Jin Wang
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Lei Huang
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Mingzhu He
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Haotian Yang
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Guang Song
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Jiecai Zhao
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Xinrong Li
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
| |
Collapse
|
23
|
Zhang Y, Yang S, Zeng Y, Chen Y, Liu H, Yan X, Pu S. A new quantitative insight: Interaction of polyethylene microplastics with soil - microbiome - crop. J Hazard Mater 2023; 460:132302. [PMID: 37647663 DOI: 10.1016/j.jhazmat.2023.132302] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/09/2023] [Accepted: 08/12/2023] [Indexed: 09/01/2023]
Abstract
In this study, the interaction between primary/secondary PE MPs and soil - microbiome - crop complex system and PE MPs enrichment behavior in crops were studied by using the self-developed quantitative characterization method of Eu-MPs and in situ zymography. The results demonstrated for the first time the enrichment effect of micron-sized PE (> 10 µm) in crops, manifested as roots>leaves>stems. Primary PE MPs significantly increased soil TN, TC, SOM and β-glu activity and inhibited Phos activity. Age-PE MPs significantly reduced soil TN, TP, β-glu and Phos activities and also have significant inhibitory effects on plant height, stem diameter, and leaf dry weight of maize. Age-PE MPs significantly affected soil microbial diversity, mainly caused by bacterial genera such as UTCFX1, Sphingomonas, Subgroup-6 and Gemmatimonas. Age-PE MPs also affected some metabolism related to microbial community composition and maize growth, including Glycerolipid, Citrate cycle (TCA cycle), C5-Branched dibasic acid, Arginine and proline, Tyrosine metabolism, pentose phosphate pathway, Valine, leucine and isoleucine biosynthesis. These research results indicated that the PE MPs, which are widely present in farmland soils, can affect crop growth, soil microbial community and metabolic function after aging, thus affecting agroecosystems and terrestrial biodiversity.
Collapse
Affiliation(s)
- Ying Zhang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China
| | - Shuo Yang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China
| | - Yuping Zeng
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China
| | - Yi Chen
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China
| | - Hanshuang Liu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China
| | - Xinyao Yan
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China
| | - Shengyan Pu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| |
Collapse
|
24
|
Wang PY, Zhao ZY, Xiong XB, Wang N, Zhou R, Zhang ZM, Ding F, Hao M, Wang S, Ma Y, Uzamurera AG, Xiao KW, Khan A, Tao XP, Wang WY, Tao HY, Xiong YC. Microplastics affect soil bacterial community assembly more by their shapes rather than the concentrations. Water Res 2023; 245:120581. [PMID: 37703757 DOI: 10.1016/j.watres.2023.120581] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/26/2023] [Accepted: 09/04/2023] [Indexed: 09/15/2023]
Abstract
Polyethylene film mulching is a key technology for soil water retention in dryland agriculture, but the aging of the films can generate a large number of microplastics with different shapes. There exists a widespread misunderstanding that the concentrations of microplastics might be the determinant affecting the diversity and assembly of soil bacterial communities, rather than their shapes. Here, we examined the variations of soil bacteria community composition and functioning under two-year field incubation by four shapes (ball, fiber, fragment and powder) of microplastics along the concentration gradients (0.01%, 0.1% and 1%). Data showed that specific surface area of microplastics was significantly positively correlated with the variations of bacterial community abundance and diversity (r=0.505, p<0.05). The fragment- and fiber-shape microplastics displayed more pronounced interfacial continuity with soil particles and induced greater soil bacterial α-diversity, relative to the powder- and ball-shape ones. Strikingly, microplastic concentrations were not significantly correlated with bacterial community indices (r=0.079, p>0.05). Based on the variations of the βNTI, bacterial community assembly actually followed both stochastic and deterministic processes, and microplastic shapes significantly modified soil biogeochemical cycle and ecological functions. Therefore, the shapes of microplastics, rather than the concentration, significantly affected soil bacterial community assembly, in association with microplastic-soil-water interfaces.
Collapse
Affiliation(s)
- Peng-Yang Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Ze-Ying Zhao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Bin Xiong
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Ning Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Rui Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, China
| | - Zhi-Ming Zhang
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, China
| | - Fan Ding
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
| | - Meng Hao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Song Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Yue Ma
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Aimee Grace Uzamurera
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Kai-Wen Xiao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Aziz Khan
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Xiu-Ping Tao
- Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610095, China
| | - Wen-Ying Wang
- School of Life Sciences, Qinghai Normal University, Xining 810001, China
| | - Hong-Yan Tao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China.
| | - You-Cai Xiong
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China.
| |
Collapse
|
25
|
Wang J, Zhang X, Li X, Wang Z. Exposure pathways, environmental processes and risks of micro (nano) plastics to crops and feasible control strategies in agricultural regions. J Hazard Mater 2023; 459:132269. [PMID: 37607458 DOI: 10.1016/j.jhazmat.2023.132269] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/24/2023]
Abstract
Micro/nanoplastics (MPs/NPs) pollution may adversely impact agricultural ecosystems, threatening the sustainability and security of agricultural production. This drives an urgent need to comprehensively understand the environmental behavior and effects of MPs/NPs in soil and atmosphere in agricultural regions, and to seek relevant pollution prevention strategies. The rhizosphere and phyllosphere are the interfaces where crops are exposed to MPs/NPs. The environmental behavior of MPs/NPs in soil and atmosphere, especially in the rhizosphere and phyllosphere, determines their plant accessibility, bioavailability and ecotoxicity. This article comprehensively reviews the transformation and migration of MPs/NPs in soil, transportation and deposition in the atmosphere, environmental behavior and effects in the rhizosphere and phyllosphere, and plant uptake and transportation pathways. The article also summarizes the key factors controlling MPs/NPs environmental processes, including their properties, biotic and abiotic factors. Based on the sources, environmental processes and intake risks of MPs/NPs in agroecosystems, the article offers several feasible pollution prevention and risk management options. Finally, the review highlights the need for further research on MPs/NPs in agro-systems, including developing quantitative detection methods, exploring transformation and migration patterns in-situ soil, monitoring long-term field experiments, and establishing pollution prevention and control systems. This review can assist in improving our understanding of the biogeochemistry behavior of MPs/NPs in the soil-plant-atmosphere system and provide a roadmap for future research.
Collapse
Affiliation(s)
- Jie Wang
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiaokai Zhang
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiaona Li
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
| |
Collapse
|
26
|
Li W, Xiao Y. Microplastics increase soil microbial network complexity and trigger diversity-driven community assembly. Environ Pollut 2023; 333:122095. [PMID: 37385357 DOI: 10.1016/j.envpol.2023.122095] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
The widespread existence of microplastics (MPs) in soil has been extensively demonstrated, and their presence would ineluctably change soil physicochemical properties and microbial community composition. However, there is limited understanding of how MPs affect soil microbial assembly. In this study, three different polymer types of MPs, i.e., high-density polyethylene (HDPE), polystyrene (PS), and polylactic acid (PLA), with the same particle size (100 μm) and dose (2%) were applied under the planted and unplanted condition, Pennisetum alopecuroides was chosen as a model species. Plant growth parameters, soil physicochemical properties, and microbial communities (including bacteria and eukaryotes) were determined. The assembly and the co-occurrence network of microbial communities were analyzed. Results revealed that the effect of MPs on soil physicochemical properties was type-dependent and could influenced by the presence of P . alopecuroides. MPs could enrich bacterial genera related to nitrogen cycle and some pathogens of eukaryotes. The presence of MPs changed bacterial and eukaryotic community assembly, in which diversity drove the deterministic/stochastic assembly processes. MPs addition increased the complexity of bacterial network, while had a minor effect on eukaryotic network. The inhibition of MPs on P . alopecuroides growth decayed over time, HDPE MPs was more harmful to P . alopecuroides growth than PS and PLA MPs. Our findings enormously improved our comprehensions of MPs-induced ecological impacts and interactions of soil bacterial and eukaryotic communities .
Collapse
Affiliation(s)
- Wanlin Li
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Yan Xiao
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China.
| |
Collapse
|
27
|
Menicagli V, Balestri E, Giommoni F, Vannini C, Lardicci C. Plastic litter changes the rhizosphere bacterial community of coastal dune plants. Sci Total Environ 2023; 880:163293. [PMID: 37030390 DOI: 10.1016/j.scitotenv.2023.163293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 05/27/2023]
Abstract
The presence of plastic litter in coastal environments like beach-dune systems has been well documented, and recent studies have shown that this pollutant can influence sand properties as well as dune vegetation. However, the effects of plastics on rhizosphere bacterial communities of dune plants have largely been neglected. This is an ecologically relevant issue since these communities may play an important role in improving plant growth and resilience of dune systems. Here, we explored the impact of plastic litter made of either non-biodegradable polymers (NBP) or biodegradable/compostable polymers (BP) on the structure and composition of rhizosphere bacterial communities associated with two widespread species along coastal European dunes, Thinopyrum junceum and Sporobolus pumilus, by using a one-year field experiment combined with metabarcoding techniques. Both plastics did not affect neither the survival nor the biomass of T. junceum plants, but they significantly increased alpha-diversity of rhizosphere bacterial communities. They also changed rhizosphere composition by increasing the abundance of the phyla Acidobacteria, Chlamydiae, and Nitrospirae, and of the family Pirellulaceae, and reducing the abundance of the family Rhizobiaceae. NBP reduced drastically the survival of S. pumilus while BP increased its root biomass compared to controls. BP also increased the abundance of the phylum Patescibacteria of the rhizosphere bacterial communities. Our findings provide the first evidence that NBP and BP can change rhizosphere bacterial communities associated with dune plants and highlight the importance of investigating how these changes can affect the resilience of coastal dunes to climate change.
Collapse
Affiliation(s)
| | | | | | - Claudia Vannini
- Department of Biology, University of Pisa, Pisa, Italy; Center for Instrument Sharing University of Pisa (CISUP), University of Pisa, Pisa, Italy; Center for Climate Change Impact, University of Pisa, Pisa, Italy
| | - Claudio Lardicci
- Department of Earth Sciences, University of Pisa, Pisa, Italy; Center for Instrument Sharing University of Pisa (CISUP), University of Pisa, Pisa, Italy; Center for Climate Change Impact, University of Pisa, Pisa, Italy
| |
Collapse
|
28
|
Wu J, Ye Q, Sun L, Liu J, Huang M, Wang T, Wu P, Zhu N. Impact of persistent rain on microplastics distribution and plastisphere community: A field study in the Pearl River, China. Sci Total Environ 2023; 879:163066. [PMID: 37004292 DOI: 10.1016/j.scitotenv.2023.163066] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/21/2023] [Accepted: 03/21/2023] [Indexed: 05/17/2023]
Abstract
Microplastic contamination is a global problem which has been threatening human health and the environment. There is still a knowledge gap about the effect of persistent rain on microplastics distribution and plastisphere community in fluvial environments. In this study, the abundance and composition of microplastics in the sediment and surface water from the Pearl River was investigated. Thirty polymers (10-500 μm) were identified from thirty-eight samples collected at ten sites using the newly developed laser direct infrared (LDIR) technique. The average concentrations of microplastics in the sediment and surface water were 1974 particles kg-1 and 290 particles L-1, respectively. Abnormally high concentrations of polyurethanes (PU) were possibly due to particulate pollution from ship antifouling. The persistent rain increased the abundance and diversity of microplastics in the surface water, whereas an opposite trend was observed in the sediment. Sediments could temporarily switch from microplastics sinks to potential sources under the effect of violent hydrodynamic disturbances. Additionally, plastisphere communities and predicted functional profiles indicated significant differences before and after the rain. Our study highlights the important impact of persistent rain on microplastic contamination in the environment.
Collapse
Affiliation(s)
- Jiayan Wu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Quanyun Ye
- Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Leiye Sun
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Jieyu Liu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Minye Huang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Tianming Wang
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, PR China.
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, PR China
| |
Collapse
|
29
|
Wang K, Yang S, Yu X, Bai M, Ye H, Xu Y, Zhao L, Wu D, Li X, Weng L, Li Y. Microplastics degradation stimulated by in-situ bioelectric field in agricultural soils. Environ Int 2023; 177:108035. [PMID: 37329759 DOI: 10.1016/j.envint.2023.108035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/15/2023] [Accepted: 06/09/2023] [Indexed: 06/19/2023]
Abstract
Bioelectric field is a stimulated force to degrade xenobiotic pollutants in soils. However, the effect of bioelectric field on microplastics (MPs) aging is unclear. The degradation behavior of polyvinyl chloride (PVC), polyethylene (PE) and polylactic acid (PLA) was investigated in an agricultural soil microbial electrochemical system in which bioelectric field was generated in-situ by native microbes. Based on the density function theory, the energy gaps between the highest and the lowest occupied molecular orbitals of the three polymers with periodic structure were 4.20, 7.24 and 10.09 eV respectively, and further decreased under the electric field, indicating the higher hydrolysis potential of PLA. Meanwhile, the mass loss of PLA in the closed-circuit group (CC) was the highest on day 120, reaching 8.94%, which was 3.01-3.54 times of that without bioelectric field stimulation. This was mainly due to the enrichment of plastic-degrading bacteria and a robust co-occurrence network as the deterministic assembly process, e.g., the abundance of potential plastic-degrading bacteria on the surface of PLA and PVC in the CC increased by 1.92 and 1.30 times, respectively, compared to the open-circuit group. In terms of functional genes, the xenobiotic biodegradation and metabolism capacity of plasticsphere in the CC were stronger than that in soil, and determined by the bioaccessibility of soil nitrogen and carbon. Overall, this study explored the promoting effect of bioelectric field on the degradation of MPs and reveled the mechanism from quantum chemical calculations and microbial community analysis, which provides a novel perception to the in-situ degradation of MPs.
Collapse
Affiliation(s)
- Kai Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Side Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Xin Yu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Mohan Bai
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Huike Ye
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Yan Xu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Lixia Zhao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Dan Wu
- Tianjin Eco-Environmental Monitoring Center, Tianjin 300191, China.
| | - Xiaojing Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Liping Weng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs / Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA / Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China
| | - Yongtao Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| |
Collapse
|
30
|
Zhao Z, Wu H, Jin T, Liu H, Men J, Cai G, Cernava T, Duan G, Jin D. Biodegradable mulch films significantly affected rhizosphere microbial communities and increased peanut yield. Sci Total Environ 2023; 871:162034. [PMID: 36754316 DOI: 10.1016/j.scitotenv.2023.162034] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Biodegradable mulch films are widely used to replace conventional plastic films in agricultural fields. However, their ecological effects on different microbial communities that naturally inhabit agricultural fields are scarcely explored. Herein, differences in bacterial communities recovered from biofilms, bulk soil, and rhizosphere soil were comparatively assessed for polyethylene film (PE) and biodegradable mulch film (BDM) application in peanut planted fields. The results showed that the plastic film type significantly influenced the bacterial community in different ecological niches of agricultural fields (P < 0.001). Specifically, BDMs significantly increased the diversity and abundance of bacteria in the rhizosphere soil. The bacterial communities in each ecological niche were distinguishable from each other; bacterial communities in the rhizosphere soil showed the most pronounced response among different treatments. Acidobacteria and Pseudomonas were significantly enriched in the rhizosphere soil when BDMs were used. BDMs also increased the rhizosphere soil bacterial network complexity and stability. The enrichment of beneficial bacteria in the rhizosphere soil under BDMs may also have implications for the observed increase in peanut yield. Deepening analyses indicated that Pseudoxanthomonas and Glutamicibacter are biomarkers in biofilms of PE and BDMs respectively. Our study provides new insights into the consequences of the application of different types of plastic films on microbial communities in different ecological niches of agricultural fields.
Collapse
Affiliation(s)
- Zhirui Zhao
- Hebei Province Key Laboratory of Sustained Utilization and Development of Water Recourse, School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China
| | - Haimiao Wu
- Hebei Province Key Laboratory of Sustained Utilization and Development of Water Recourse, School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China; Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Tuo Jin
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; Rural Energy and Environment Agency, Ministry of Agriculture and Rural Affairs, Beijing 100125, China
| | - Huiying Liu
- Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Jianan Men
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Guangxing Cai
- Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
| | - Tomislav Cernava
- Institute of Environmental Biotechnology, Graz University of Technology, Petersgasse 12, 8010 Graz, Austria
| | - Guilan Duan
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Decai Jin
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
31
|
Zhang X, Feng Q, Li X, Guo L, Ma D, Cheng X, Qi Y. Microplastics in household fecal sewage treatment facilities of rural China. J Hazard Mater 2023; 448:130925. [PMID: 36753913 DOI: 10.1016/j.jhazmat.2023.130925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/18/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Fecal sewage (FS), composed of human feces and wastewater, potentially contains microplastics (MPs) that are prone to environmental pollution. In this study, 65 FS samples, as collected from 65 villages in 27 Chinese provinces, have been employed to investigate the characteristics of MPs in three kinds of household FS treatment facilities of rural regions, and the possibility of FS irrigation as the source of MPs in farmlands. As a result, seven physicochemical properties and microbial community of FS were detected, and pertinent social statistical data were collected to determine influencing factors of MPs. The abundance of FS-based MPs ranged from 47.16 to 143.05 particles L-1, with an average 90.38 ± 20.63 particles L-1. The FS from northern China had higher MPs abundance than that from southern and northwestern China. Average MPs abundance was cesspit (101.33) > septic tank (86.54) > biogas digester (84.11). The estimated mass of FS-based MPs entering farmlands in China was 7.8 × 103-5.6 × 104 tons a year. Chemical oxygen demand and genus Phascolarctobacterium might mainly affected MPs abundance in FS, while some other factors such as suspended substance, ambient temperature, and medical care spending were also significantly correlated with FS-based MPs abundance.
Collapse
Affiliation(s)
- Xuan Zhang
- School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
| | - Qingge Feng
- School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Xiaowei Li
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Li Guo
- College of Design Art, Liuzhou Institute of Technology, Liuzhou 545616, China
| | - Dachao Ma
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Xiaodie Cheng
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Yuan Qi
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| |
Collapse
|
32
|
Jiang M, Li S, Li H, Jian S, Liu F, Li X. Reprogramming of microbial community in barley root endosphere and rhizosphere soil by polystyrene plastics with different particle sizes. Sci Total Environ 2023; 866:161420. [PMID: 36621484 DOI: 10.1016/j.scitotenv.2023.161420] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 01/01/2023] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
Polystyrene plastics is an emerging pollutant affecting plant performance and soil functioning. However, little information is available on the effects of microplastics and nanoplastics on plant root endophytic and rhizospheric soil microbial communities. Here, barley plants were grown in microplastics/nanoplastics -treated soil and the diversity, composition and function of bacteria and fungi in the root and rhizosphere soil were examined. At the seedling stage, greater changes of root endophytes were found compared with rhizosphere microorganisms under the plastic treatments. Nanoplastics decreased the richness and diversity of the fungal community, while microplastics increased the diversity of the root endophytic bacterial community. The network of the bacterial community under nanoplastics showed higher vulnerability while lower complexity than that under the control. However, the bacterial community under microplastics had a relatively higher resistance than the control. For the rhizosphere microbial community, no significant effect of plastics was found on the α-diversity index at the seedling stage. In addition, the nanoplastics resulted in higher sensitivity in the relative abundance and function of rhizosphere soil microbes than root endophytic microbes at the mature stage. Treatments of polystyrene plastics with different particle sizes reprogramed the rhizosphere and root endophytic microbial communities. Different effects of microplastics and nanoplastics were found on the diversity, composition, network structure and function of bacteria and fungi, which might be due to the variation in particle sizes. These results lay a foundation for learning the effects of polystyrene plastics with different particle sizes on the microorganisms in rhizosphere soil and plant roots, which may have important implications for the adaptation of plant-microbial holobiont in polystyrene plastics-polluted soils.
Collapse
Affiliation(s)
- Miao Jiang
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130102, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education of China, Northwest A & F University, Yangling 712100, China
| | - Shuxin Li
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130102, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huawei Li
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shulian Jian
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130102, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fulai Liu
- University of Copenhagen, Faculty of Science, Department of Plant and Environmental Sciences, Højbakkegård Allé 13, DK-2630 Tåstrup, Denmark
| | - Xiangnan Li
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130102, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
33
|
Rong L, Wang Y, Meidl P, Wang L, Sun H. Microplastics affect soybean rhizosphere microbial composition and function during vegetative and reproductive stages. Ecotoxicol Environ Saf 2023; 252:114577. [PMID: 36709538 DOI: 10.1016/j.ecoenv.2023.114577] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/08/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Microplastics (MPs) are emerging contaminants in agricultural soil, whereas their effects on the rhizosphere microbial ecosystems and biogeochemical nitrogen cycles during plant growth remain unknown. Here, a 70-day greenhouse experiment was carried out with black and fluvo-aquic soil to evaluate the influence of polyamide (PA), polyethylene (PE), polyester (PES), and polyvinyl chloride (PVC) MPs on the bacterial communities and functions in the soybean rhizosphere. The PA treatment consistently affected the rhizobacterial alpha diversity in the fluvo-aquic soil at soybean vegetative and reproductive growth stages, whereas the PE, PES, and PVC treatments had a short-term effect on the bacterial alpha diversity. At two growth stages, 6 and 23 biomarkers were consistently abundant in the PA treatment in the black soil and fluvo-aquic soil, respectively, and order Rhizobiales was found to be a biomarker for PA MPs contamination in both soils. Additionally, PA treatment decreased bacterial network complexity and tightness, whereas the effects of the PE, PES, and PVC on bacterial co-occurrence patterns varied depending on the soil types. Furthermore, PES and PVC treatments inhibited ammonification processes in the soybean rhizosphere, and PE could temporarily inhibit ammonia oxidation and denitrification processes according to the variations of N-cycling gene abundances. These effects on soil N-cycling also varied with soil types and soybean growth stages. This study provides profound information for understanding of MPs residues on the assembly of the soybean rhizosphere communities and function during plant development.
Collapse
Affiliation(s)
- Lili Rong
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, 300350 Tianjin, China
| | - Yu Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, 300350 Tianjin, China.
| | - Peter Meidl
- Institute of Biology, Freie Universität Berlin, 14195 Berlin, Germany; Berlin-Brandenburg Institute of Advanced Biodiversity Research, 14195 Berlin, Germany
| | - Lei Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, 300350 Tianjin, China
| | - Hongwen Sun
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, 300350 Tianjin, China.
| |
Collapse
|
34
|
Wang X, Diao Y, Dan Y, Liu F, Wang H, Sang W, Zhang Y. Effects of solution chemistry and humic acid on transport and deposition of aged microplastics in unsaturated porous media. Chemosphere 2022; 309:136658. [PMID: 36183879 DOI: 10.1016/j.chemosphere.2022.136658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Microplastics (MPs) are susceptible to aging in the environment, and aged MPs are highly migratory in soil due to their smaller particle size and more negative surface charge, but the effects of soil environmental factors on the fate and transport of aged MPs are still unclear. In this study, the transport behavior of pristine/aged MPs in unsaturated sandy porous media was examined under different ionic strength (IS), cationic type (Na+, Ca2+) and humic acid (HA) conditions. The results indicated that the surface charge, surface oxygen-containing functional groups and surface morphology of MPs changed significantly after aging, and that the mobility of aged MPs was significantly enhanced than the pristine MPs under all test conditions. The retention amounts of pristine/aged MPs in unsaturated porous media increased with IS, and IS had a less inhibitory effect on the transport of aged MPs than pristine MPs. The mobility of pristine/aged MPs in Ca2+ solutions was significantly weaker than that in Na+ solutions due to enhanced straining and electrostatic adsorption. HA promoted the mobility of pristine/aged MPs in unsaturated porous media under all IS Na+ (1, 10, and 25 mM) solutions and lower IS (1 mM) Ca2+ solutions, and the ability of HA to promote the transport of aged MPs was significantly stronger than that of pristine MPs due to the higher adsorption of HA on the surface of aged MPs. However, at higher IS (10 mM) Ca2+ solution conditions, the bridging effect of Ca2+ led to the formation of HA-MPs complexes, which altered the hydrophobicity of the pristine/aged MPs surface and the pristine/aged MPs were mainly retained on the air-water interface (AWI). CFT theory and two-site kinetic retention models indicated that the retention of pristine/aged MPs in unsaturated media was dominated by monolayer adsorption, straining and clogging effects. The current research findings may provide insights into the fate and transport of aged MPs in soil and their potential risk of groundwater contamination.
Collapse
Affiliation(s)
- Xiaoxia Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yinzhu Diao
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yitong Dan
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Feihong Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Huan Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Wenjing Sang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Yalei Zhang
- College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| |
Collapse
|