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Shi Z, Xiong L, Liu T, Wu W. Alteration of bacterial communities and co-occurrence networks as a legacy effect upon exposure to polyethylene residues under field environment. J Hazard Mater 2022; 426:128126. [PMID: 34954435 DOI: 10.1016/j.jhazmat.2021.128126] [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: 10/21/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
The use of plastic film mulch threatens the sustainability of the terrestrial environment because of the persistence of plastic residue. Identification of the potential long-term impacts of polyethylene (PE) residue on the soil microbiome has been overlooked in most studies. A long-term field experiment was conducted to expand this understanding by performing a co-occurrence network analysis of bacterial communities among different compartment niches (i.e. plastisphere, rhizosphere, and bulk soil) and three PE residue concentrations to determine the differential operational taxonomic units (OTUs) and keystone taxa. The specific set of bacterial microbes in the plastisphere was different from that of bulk soil and rhizosphere (R2 = 0.372, P < 0.001, PERMANOVA). Totally, 215 and 257 differential OTUs were identified in response to the different compartment niches and PE residue concentrations, respectively. Among these, several hubs or keystone taxa responsible for the exposure to PE residues were further identified, most of which have potential biodegradation functions. Exposure to PE residues led to a reduced network complexity and microbiome stability in the soil ecosystem. This study provides a comprehensive evidence on the alteration of bacterial communities and co-occurrence networks in the terrestrial environment as a legacy effect when exposed to PE residues, and has potential implications for predicting the ecological functions of the soil ecosystem.
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Affiliation(s)
- Zhen Shi
- College of Tropical Crops, Hainan University, Haikou 570228, Hainan, China
| | - Li Xiong
- College of Tropical Crops, Hainan University, Haikou 570228, Hainan, China
| | - Tuo Liu
- College of Tropical Crops, Hainan University, Haikou 570228, Hainan, China
| | - Wei Wu
- College of Tropical Crops, Hainan University, Haikou 570228, Hainan, China.
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Luo G, Jin T, Zhang H, Peng J, Zuo N, Huang Y, Han Y, Tian C, Yang Y, Peng K, Fei J. Deciphering the diversity and functions of plastisphere bacterial communities in plastic-mulching croplands of subtropical China. J Hazard Mater 2022; 422:126865. [PMID: 34449345 DOI: 10.1016/j.jhazmat.2021.126865] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [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: 06/02/2021] [Revised: 07/22/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Considering the inhomogeneity of plastisphere and surrounding soil, it is plausible that the microbial community colonizing it also varies, affecting soil services and sustainability. Herein, we analyzed the soil and film residue from fifty-five plastic-mulching croplands in the subtropical areas of China. Based on the outcomes of this analysis, we explored the diversity and functions of the associated bacterial communities. Alpha-diversity and phylogenetic diversity of the plastisphere bacterial community was significantly lower than the surrounding soil. The average net relatedness and net nearest taxa indices of samples were less than zero. Four phyla and twenty genera were enriched in the plastisphere compared to the surrounding soil. Ecological networks of the plastisphere community showed multiple nodes, but fewer interactions, and the members of Bradyrhizobium, Rhodospirillaceae, and Bacillus were indicated as the hub species. Predicted pathways related to human disease, as well as the metabolisms of cofactors, vitamins, amino acids, and xenobiotic biodegradation, were reinforced in the plastisphere, and meanwhile, accompanied by an increase in abundance of genes related to carbon, nitrogen, and phosphorus cycles. These results demonstrated the diversity and functions of the plastisphere microbiome and highlighted the necessity for exploring the ecological and health risks of plastic residue in croplands.
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Affiliation(s)
- Gongwen Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China; Key laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Tuo Jin
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China; Rural Energy and Environment Agency, Ministry of Agriculture and Rural affairs, Beijing 100125, China
| | - Huiru Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China
| | - Jianwei Peng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China.
| | - Ning Zuo
- Resource Protection and Utilization Station, Hunan Agriculture and Rural Affairs Department, Changsha 410005, China
| | - Ying Huang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China
| | - Yongliang Han
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China
| | - Chang Tian
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China
| | - Yong Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China
| | - Kewei Peng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China
| | - Jiangchi Fei
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha 410128, China.
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Faezeh Seif, Noorimotlagh Z, Mirzaee SA, Kalantar M, Barati B, Fard ME, Fard NK. The SARS-CoV-2 (COVID-19) pandemic in hospital: An insight into environmental surfaces contamination, disinfectants' efficiency, and estimation of plastic waste production. Environ Res 2021; 202:111809. [PMID: 34333010 PMCID: PMC8320441 DOI: 10.1016/j.envres.2021.111809] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 05/28/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 08/13/2023]
Abstract
The current COVID-19 pandemic that is caused by SARS-CoV-2 has led all the people around the globe to implement preventive measures such as environmental cleaning using alcohol-based materials, and social distancing in order to prevent and minimize viral transmission via fomites. The role of environmental surface contamination in viral transmission in within hospital wards is still debatable, especially considering the spread of new variants of the virus in the world. The present comprehensive study aims to investigate environmental surface contamination in different wards of a hospital as well as the efficacy of two common disinfectants for virus inactivation, and tries to produce an estimate of plastic residue pollution as an environmental side effect of the pandemic. With regard to environmental surface contamination, 76 samples were taken from different wards of the hospital, from which 40 were positive. These samples were taken from contaminated environmental surfaces such as patient bed handles, the nursing station, toilet door handles, cell phones, patient toilet sinks, toilet bowls, and patient's pillows, which are regularly-touched surfaces and can pose a high risk for transmission of the virus. The number of positive samples also reveals that SARS-CoV-2 can survive on inanimate surfaces after disinfection by ethanol 70 % and sodium hypochlorite (0.001 %). The results correspond to the time that the VOC 202012/01 (lineage B.1.1.7) had emerged in the hospital and this should be considered that this variant could possibly have different traits, characteristics, and level of persistence in the environment. The plastic waste as an environmental side effect of the pandemic was also investigated and it was confirmed that the amount of plastic residue for a single (RT) PCR confirmatory test for COVID-19 diagnosis is 821.778 g of plastic residue/test. As a result, it is recommended that for improving plastic waste management programs, considering challenges such as minimizing plastic waste pollution, optimization of gas control technologies in incinerators, process redesign, reduction of single-use plastics and PPE, etc. Is of utmost importance.
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Affiliation(s)
- Faezeh Seif
- Department of Public Health, Shoushtar Faculty of Medical Sciences, Shoushtar, Iran.
| | - Zahra Noorimotlagh
- Health & Environment Research Center, Ilam University of Medical Sciences, Ilam, Iran; Department of Environmental Health Engineering, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran.
| | - Seyyed Abbas Mirzaee
- Health & Environment Research Center, Ilam University of Medical Sciences, Ilam, Iran; Department of Environmental Health Engineering, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran.
| | - Mojtaba Kalantar
- Department of Public Health, Shoushtar Faculty of Medical Sciences, Shoushtar, Iran.
| | - Barat Barati
- Department of Public Health, Shoushtar Faculty of Medical Sciences, Shoushtar, Iran.
| | - Mahdi Emamian Fard
- Department of Public Health, Shoushtar Faculty of Medical Sciences, Shoushtar, Iran.
| | - Nozar Kalantar Fard
- Department of Public Health, Shoushtar Faculty of Medical Sciences, Shoushtar, Iran.
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Li B, Huang S, Wang H, Liu M, Xue S, Tang D, Cheng W, Fan T, Yang X. Effects of plastic particles on germination and growth of soybean (Glycine max): A pot experiment under field condition. Environ Pollut 2021; 272:116418. [PMID: 33433343 DOI: 10.1016/j.envpol.2020.116418] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [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: 10/12/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 05/06/2023]
Abstract
Plastic residues have become a serious environmental problem in areas where agricultural plastic film are used intensively. Although numerous of studies have been done to assess its impacts on soil quality and crop yields, the understanding of meso-plastic particles effects on plant is still limited. In this study, low density polyethylene (PE) and biodegradable plastic (Bio) mulch film were selected to study the effects of meso-plastic debris on soybean germination and plant growth with the accumulation levels of 0%, 0.1%, 0.5% and 1% in soil (w: w, size ranging 0.5-2 cm) by a pot experiment under field condition. Results showed that the germination viability of soybean seeds was reduced to 82.39%, 39.44% and 26.06% in the treatments with 0.1%, 0.5% and 1% added plastic debris compared to the control (CK), respectively, suggesting that plastic residues in soil inhibit the viability of soybean seed germination. The plastic debris had a significant negative effect on plant height and culm diameter during the entire growth stage of soybean. Similarly, the leaf area at harvest was reduced by 1.97%, 6.86% and 11.53% compared to the CK in the treatments with 0.1%, 0.5% and 1% plastic debris addition, respectively. In addition, the total plant biomass under plastic addition was reduced in both the flowering and harvesting stages, compared to the CK. For the different type of plastic residues, plant height, leaf area and root/shoot ratio at group PE were significantly lower than those of groups treated by Bio. In conclusion, PE debris had a greater negative effects on plant height, culm diameter, leaf area and root/shoot ratio while Bio debris mainly showed the adverse effects on germination viability and root biomass especially at the flowering stage. Therefore, further research is required to elaborate plastic particles' effects on different stages of crops and soil quality.
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Affiliation(s)
- Bintao Li
- State Key Laboratory of Soil Erosion and Dryland Arming on the Loess Plateau, and College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Shan Huang
- State Key Laboratory of Soil Erosion and Dryland Arming on the Loess Plateau, and College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Water Use Efficiency in Dryland Area, Institute of Dryland Farming, Gansu Agriculture Academy of Sciences, Lanzhou, China
| | - Haoming Wang
- College of Plant Protection, Northwest A&F University, Yangling, 712100, China
| | - Mengjuan Liu
- College of Agronomy, Northwest A&F University, Yangling, 712100, China
| | - Sha Xue
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, China
| | - Darrell Tang
- Soil Physics and Land Management, Wageningen University & Research, 6700AA, Wageningen, the Netherlands
| | - Wanli Cheng
- Key Laboratory of Water Use Efficiency in Dryland Area, Institute of Dryland Farming, Gansu Agriculture Academy of Sciences, Lanzhou, China
| | - Tinglu Fan
- Key Laboratory of Water Use Efficiency in Dryland Area, Institute of Dryland Farming, Gansu Agriculture Academy of Sciences, Lanzhou, China
| | - Xiaomei Yang
- State Key Laboratory of Soil Erosion and Dryland Arming on the Loess Plateau, and College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Water Use Efficiency in Dryland Area, Institute of Dryland Farming, Gansu Agriculture Academy of Sciences, Lanzhou, China; Soil Physics and Land Management, Wageningen University & Research, 6700AA, Wageningen, the Netherlands.
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