1
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He M, Yao W, Meng Z, Liu J, Yan W, Meng W. Microplastic-contamination can reshape plant community by affecting soil properties. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 283:116844. [PMID: 39128455 DOI: 10.1016/j.ecoenv.2024.116844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 07/28/2024] [Accepted: 08/04/2024] [Indexed: 08/13/2024]
Abstract
Microplastics, as emerging contaminants, pose a serious threat to terrestrial ecosystems, yet their impact on plant communities remains largely unexplored. This study utilized the soil seed bank to establish naturally germinated plant communities and investigated the effects of polyethylene (PE) and polypropylene (PP) on community characteristics. Additionally, the study aimed to elucidate the mechanisms by which variations in soil properties influenced plant community. The results indicated that microplastics led to a significant increase in soil available potassium (AK), likely due to alterations in soil microorganism proliferation. Furthermore, microplastics caused a decrease in soil salinity, total phosphorus (TP), and ammonium nitrogen (AN). Additionally, plant community composition shifted, resulting in reduced stability and niche breadth of dominant species. Microplastics also impacted niche overlap and interspecific associations among dominant species, possibly due to the reduced accessibility of resources for dominant species. Salinity, AK, and TP were identified as major drivers of changes in niche breadth, niche overlap, and community stability, with TP exerting the strongest impact on plant community composition. These findings provide valuable insights for the restoration of plant communities in coastal saline-alkali wetland contaminated by microplastics.
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Affiliation(s)
- Mengxuan He
- Faculty of Geography, Tianjin Normal University, Tianjin 300387, China
| | - Wenshuang Yao
- Faculty of Geography, Tianjin Normal University, Tianjin 300387, China
| | - Zirui Meng
- Faculty of Geography, Tianjin Normal University, Tianjin 300387, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
| | - Jie Liu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
| | - Wei Yan
- Tianjin Urban Planning & Design Institute Co., LTD, Tianjin 300190, China.
| | - Weiqing Meng
- Faculty of Geography, Tianjin Normal University, Tianjin 300387, China.
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2
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Kushwaha A, Goswami L, Kim BS, Lee SS, Pandey SK, Kim KH. Constructed wetlands for the removal of organic micropollutants from wastewater: Current status, progress, and challenges. CHEMOSPHERE 2024; 360:142364. [PMID: 38768790 DOI: 10.1016/j.chemosphere.2024.142364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 05/12/2024] [Accepted: 05/16/2024] [Indexed: 05/22/2024]
Abstract
In this work, the practical utility of constructed wetlands (CWs) is described as a promising treatment option for micropollutants (MPs) in wastewater with the aid of their eco-friendly, low-energy, economically feasible, and ecologically sustainable nature. This paper offers a comprehensive review on CW technology with respect to the key strategies for MP removal such as phytoremediation, substrate adsorption, and microbial degradation. It explores the important factors controlling the performance of CWs (e.g., in terms of configurations, substrates, plant-microbe interactions, temperature, pH, oxygen levels, hydraulic loading rate, and retention time) along with the discussions on the pivotal role of microbial populations in CWs and plant-microbe cooperative remediation dynamics, particularly in relation to diverse organic MP patterns in CWs. As such, this review aims to provide valuable insights into the key strategies for optimizing MP treatment and for enhancing the efficacy of CW systems. In addition, the process-based models of constructed wetlands along with the numerical simulations based on the artificial neural network (ANN) method are also described in association with the data exploratory techniques. This work is thus expected to help open up new possibilities for the application of plant-microbe cooperative remediation approaches against diverse patterns of organic MPs present in CWs.
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Affiliation(s)
- Anamika Kushwaha
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Lalit Goswami
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Beom Soo Kim
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Sang Soo Lee
- Department of Environmental & Energy Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Sudhir Kumar Pandey
- Department of Botany, Guru Ghasidas Vishwavidyalaya (a central University) Bilaspur, Chhattisgarh, 495009, India
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
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3
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Wang J, Zhu Y, Ye B, Dun J, Yu X, Sui Q. Absorption and translocation of selected pharmaceuticals in Pistia stratiotes: Spatial distribution analysis using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:134028. [PMID: 38493630 DOI: 10.1016/j.jhazmat.2024.134028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/19/2024]
Abstract
Phytoremediation can eliminate pharmaceuticals from aquatic environments through absorption; however, understanding of absorption and transport processes in plants remains limited. In this study, a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry imaging (MALDI-MSI) method was developed to explore the absorption and translocation mechanisms of seven common pharmaceuticals in Pistia stratiotes. Results showed that 2,3-dicyanohydroquinone, an infrequently used matrix, exhibited outstanding performance in MALDI-MSI analysis, producing the highest signal intensity for four of the seven pharmaceuticals. Region of Interest (ROI) analysis revealed that charge speciation of pharmaceuticals significantly influenced their ability to enter vascular bundle. Neutral and positively charged pharmaceuticals easily entered vascular bundle, while negatively charged pharmaceuticals faced difficulty. ROI results for neutral and negatively charged pharmaceuticals exhibited positive correlation with their transfer factor values, indicating that their translocation ability from root to shoot was related to their capacity to enter vascular bundle. However, no correlation was observed for positively charged pharmaceuticals, suggesting that these compounds, upon entering vascular bundle, encountered difficulties in upward translocation through the xylem. This study introduces an innovative approach and offers novel insights into the retention and migration of pharmaceuticals in plant tissues, aiming to enhance the understanding of pharmaceutical accumulation in plants. ENVIRONMENTAL IMPLICATION: Pharmaceuticals in aquatic environment can inflict detrimental effects on both human health and ecosystem. Phytoremediation can remove pharmaceuticals from aquatic environments through absorption. However, our understanding of absorption and transportation of pharmaceuticals in plants remains limited. This study developed a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry imaging (MALDI-MSI) method for pharmaceuticals in plant roots, and to explore the absorption and translocation mechanisms of pharmaceuticals. The study offers direct evidence of differences in accumulation behavior of pharmaceuticals in plants, providing valuable insights for targeted and effective strategies in using plants for remediating the aquatic ecosystem from pharmaceuticals.
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Affiliation(s)
- Jiaxi Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yiwen Zhu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Beibei Ye
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Junling Dun
- Analytical Applications Center, Shimadzu (China) Co., Ltd., Shanghai 200233, China
| | - Xia Yu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qian Sui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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4
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Zhong M, Yang C, Su L, Sun Z, Xu J, Zhang J, Li Q, Hao Y, Ma H, Chen H, Chen J, Chen S. Interactions between plants and bacterial communities for phytoremediation of petroleum-contaminated soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37564-37573. [PMID: 38780843 DOI: 10.1007/s11356-024-33667-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024]
Abstract
Plants can stimulate the microbes to degrade ubiquitous petroleum hydrocarbons (PHCs), which has prompted a novel view on rhizoremediation. In the present study, the degradation rate of PHCs was investigated and 16S rRNA gene analysis was performed to investigate the PHC-degrading bacteria in petroleum-contaminated soil with different plants. Mirabilis jalapa (M. jalapa) has a higher PHC degradation rate than Lolium perenne (L. perenne) under petroleum contamination. The bacterial diversity in rhizospheric soil was decreased but the relative abundance of Actinobacteriota, Proteobacteria, and Candidatus Saccharibacteria were significant increased on 45 days petroleum-contaminated rhizospheric soil. In addition, the relative expression of PHC degradation-related genes, the content of malic acid and citric acid of the root exudates in the two plants was significantly increased in response to petroleum stress. The content of citric acid increased 11.9 times in M. jalapa and 3.4 times in L. perenne, respectively, in response to petroleum stress. These results indicate that M. jalapa changes the hydrocarbon-degrading microbial community to enhance the degradation of PHCs by root exudates and phytostimulation.
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Affiliation(s)
- Ming Zhong
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Caiyu Yang
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Liping Su
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Ziyu Sun
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Juanjuan Xu
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Jin Zhang
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Qilong Li
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Yimin Hao
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Hui Ma
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Hongman Chen
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Jiamei Chen
- Department of foreign languages, Shenyang Agricultural University, Shenyang, China
| | - Shuisen Chen
- Key Laboratory of Agricultural Biotechnology of Liaoning Province, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China.
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5
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Yang SH, Shan L, Chu KH. Root exudates enhanced 6:2 FTOH defluorination, altered metabolite profiles and shifted soil microbiome dynamics. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133651. [PMID: 38309165 DOI: 10.1016/j.jhazmat.2024.133651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/05/2024]
Abstract
6:2 Fluorotelomer alcohol (FTOH), one of per- and polyfluoroalkyl substances (PFAS), is widely used as a raw material in synthesizing surfactants and fluorinated polymers. However, little is known about the role of root exudates on 6:2 FTOH biodegradation in the rhizosphere. This study examined the effects of root exudates produced from dicot (Arabidopsis thaliana) and monocot (Brachypodium distachyon) grown under different nutrient conditions (nutrient-rich, sulfur-free, and potassium-free) on 6:2 FTOH biotransformation with or without bioaugmentating agent Rhodococcus jostii RHA1. All the exudates enhanced defluorination of 6:2 FTOH by glucose-grown RHA1. Amendment of dicot or monocot root exudates, regardless of the plant growth conditions, also enhanced 6:2 FTOH biotransformation in soil microcosms. Interestingly, high levels of humic-like substances in the root exudates are linked to high extents of 6:2 FTOH defluorination. Bioaugmenting strain RHA1 along with root exudates facilitated 6:2 FTOH transformation with a production of more diverse metabolites. Microbial community analysis revealed that Rhodococcus was predominant in all strain RHA1 spiked treatments. Different root exudates changed the soil microbiome dynamics. This study provided new insight into 6:2 FTOH biotransformation with different root exudates, suggesting that root exudates amendment and bioaugmentation are promising approaches to promote rhizoremediation for PFAS-contaminated soil.
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Affiliation(s)
- Shih-Hung Yang
- Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Libo Shan
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109-1085, USA
| | - Kung-Hui Chu
- Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX 77843, USA.
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Chen X, Zhu Y, Chen F, Li Z, Zhang X, Wang G, Ji J, Guan C. The role of microplastics in the process of laccase-assisted phytoremediation of phenanthrene-contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167305. [PMID: 37742959 DOI: 10.1016/j.scitotenv.2023.167305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/16/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are highly toxic organic pollutants widely distributed in terrestrial environments and laccase was considered as an effective enzyme in PAHs bioremediation. However, laccase-assisted phytoremediation of PAHs-contaminated soil has not been reported. Moreover, the overuse of plastic films in agriculture greatly increased the risk of co-existence of PAHs and microplastics in soil. Microplastics can adsorb hydrophobic organics, thus altering the bioavailability of PAHs and ultimately affecting the removal of PAHs from soil. Therefore, this study aimed to evaluate the efficiency of laccase-assisted maize (Zea mays L.) in the remediation of phenanthrene (PHE)-contaminated soil and investigate the effect of microplastics on this remediation process. The results showed that the combined application of laccase and maize achieved a removal efficiency of 83.47 % for soil PHE, and laccase significantly reduced the accumulation of PHE in maize. However, microplastics significantly inhibited the removal of soil PHE (10.88 %) and reduced the translocation factor of PHE in maize (87.72 %), in comparison with PHE + L treatment. Moreover, microplastics reduced the laccase activity and the relative abundance of some PAHs-degrading bacteria in soil. This study provided an idea for evaluating the feasibility of the laccase-assisted plants in the remediation of PAHs-contaminated soil, paving the way for reducing the risk of secondary pollution in the process of phytoremediation.
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Affiliation(s)
- Xiancao Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Yalan Zhu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Fenyan Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Zhiman Li
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Xiaoge Zhang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Gang Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Jing Ji
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China.
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7
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Chen X, Zheng X, Fu W, Liu A, Wang W, Wang G, Ji J, Guan C. Microplastics reduced bioavailability and altered toxicity of phenanthrene to maize (Zea mays L.) through modulating rhizosphere microbial community and maize growth. CHEMOSPHERE 2023; 345:140444. [PMID: 37839745 DOI: 10.1016/j.chemosphere.2023.140444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 07/25/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023]
Abstract
Due to its large specific surface area and great hydrophobicity, microplastics can adsorb polycyclic aromatic hydrocarbons (PAHs), affecting the bioavailability and the toxicity of PAHs to plants. This study aimed to evaluate the effects of D550 and D250 (with diameters of 550 μm and 250 μm) microplastics on phenanthrene (PHE) removal from soil and PHE accumulation in maize (Zea mays L.). Moreover, the effects of microplastics on rhizosphere microbial community of maize grown in PHE-contaminated soil would also be determined. The results showed that D550 and D250 microplastics decreased the removal of PHE from soil by 6.5% and 2.7% and significantly reduced the accumulation of PHE in maize leaves by 64.9% and 88.5%. Interestingly, D550 microplastics promoted the growth of maize and enhanced the activities of soil protease and alkaline phosphatase, while D250 microplastics significantly inhibited the growth of maize and decreased the activities of soil invertase, alkaline phosphatase and catalase, in comparison with PHE treatment. In addition, microplastics changed the rhizosphere soil microbial community and reduced the relative abundance of PAHs degrading bacteria (Pseudomonas, Massilia, Proteobacteria), which might further inhibit the removal of PHE from soil. This study provided a new perspective for evaluating the role of microplastics on the bioavailability of PHE to plants and revealing the combined toxicity of microplastics and PHE to soil microcosm and plant growth.
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Affiliation(s)
- Xiancao Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Xiaoyan Zheng
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Wenting Fu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Anran Liu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Wenjing Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Gang Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Jing Ji
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
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8
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Pandey P, Tripathi A, Dwivedi S, Lal K, Jhang T. Deciphering the mechanisms, hormonal signaling, and potential applications of endophytic microbes to mediate stress tolerance in medicinal plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1250020. [PMID: 38034581 PMCID: PMC10684941 DOI: 10.3389/fpls.2023.1250020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023]
Abstract
The global healthcare market in the post-pandemic era emphasizes a constant pursuit of therapeutic, adaptogenic, and immune booster drugs. Medicinal plants are the only natural resource to meet this by supplying an array of bioactive secondary metabolites in an economic, greener and sustainable manner. Driven by the thrust in demand for natural immunity imparting nutraceutical and life-saving plant-derived drugs, the acreage for commercial cultivation of medicinal plants has dramatically increased in recent years. Limited resources of land and water, low productivity, poor soil fertility coupled with climate change, and biotic (bacteria, fungi, insects, viruses, nematodes) and abiotic (temperature, drought, salinity, waterlogging, and metal toxicity) stress necessitate medicinal plant productivity enhancement through sustainable strategies. Plants evolved intricate physiological (membrane integrity, organelle structural changes, osmotic adjustments, cell and tissue survival, reclamation, increased root-shoot ratio, antibiosis, hypersensitivity, etc.), biochemical (phytohormones synthesis, proline, protein levels, antioxidant enzymes accumulation, ion exclusion, generation of heat-shock proteins, synthesis of allelochemicals. etc.), and cellular (sensing of stress signals, signaling pathways, modulating expression of stress-responsive genes and proteins, etc.) mechanisms to combat stresses. Endophytes, colonizing in different plant tissues, synthesize novel bioactive compounds that medicinal plants can harness to mitigate environmental cues, thus making the agroecosystems self-sufficient toward green and sustainable approaches. Medicinal plants with a host set of metabolites and endophytes with another set of secondary metabolites interact in a highly complex manner involving adaptive mechanisms, including appropriate cellular responses triggered by stimuli received from the sensors situated on the cytoplasm and transmitting signals to the transcriptional machinery in the nucleus to withstand a stressful environment effectively. Signaling pathways serve as a crucial nexus for sensing stress and establishing plants' proper molecular and cellular responses. However, the underlying mechanisms and critical signaling pathways triggered by endophytic microbes are meager. This review comprehends the diversity of endophytes in medicinal plants and endophyte-mediated plant-microbe interactions for biotic and abiotic stress tolerance in medicinal plants by understanding complex adaptive physiological mechanisms and signaling cascades involving defined molecular and cellular responses. Leveraging this knowledge, researchers can design specific microbial formulations that optimize plant health, increase nutrient uptake, boost crop yields, and support a resilient, sustainable agricultural system.
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Affiliation(s)
- Praveen Pandey
- Microbial Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Division of Plant Breeding and Genetic Resource Conservation, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Arpita Tripathi
- Microbial Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Faculty of Education, Teerthanker Mahaveer University, Moradabad, India
| | - Shweta Dwivedi
- Division of Plant Breeding and Genetic Resource Conservation, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Kanhaiya Lal
- Division of Plant Breeding and Genetic Resource Conservation, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Tripta Jhang
- Division of Plant Breeding and Genetic Resource Conservation, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
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Chane AD, Košnář Z, Hřebečková T, Wiesnerová L, Jozífek M, Doležal P, Praus L, Tlustoš P. Bioremediation of the synthetic musk compounds Galaxolide and Tonalide by white rot fungal strain-assisted phytoremediation in biosolid-amended soil. CHEMOSPHERE 2023; 328:138605. [PMID: 37028715 DOI: 10.1016/j.chemosphere.2023.138605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/23/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
The study was aimed to conduct the bioremediation of synthetic musks by four species of white rot fungi combined with phytoremediation (Zea mays) in biosolid-amended soils where only Galaxolide (HHCB) and Tonalide (AHTN) were found as other musks were below the detection limit (0.5-2 μg/kg dw). The HHCB and AHTN concentration in natural attenuation treated soil was decreased by not more than 9%. In solely mycoremediation, Pleurotus ostreatus was found to be the most efficient fungal strain, with the higher (P < 0.05) HHCB and AHTN removal (51.3% and 46.4%). Phytoremediation-only of biosolid-amended soil was also able to remove HHCB and AHTN from soil significantly (P < 0.05) in comparison to the control treatment without plants which resulted in the final concentration for both compounds of 56.2 and 15.3 μg/kg dw, respectively. Using white rot fungus-assisted phytoremediation, only P. ostreatus decreased the HHCB content in soil significantly (P < 0.05) by 44.7%, when compared to the initial concentration. While using Phanerochaete chrysosporium, the AHTN concentration was decreased by 34.5%, which was a significantly lower concentration at the end of experiment compared to the initial value. Via fungus-assisted phytoremediation, the enzymatic activity and fungal biomass were increased, probably due to the presence of roots in association with the soil microbiome, in the process increasing the degradation of fragrances accordingly. This could lead to a higher (P < 0.05) AHTN removal in P. chrysosporium assisted phytoremediation. Estimated HHCB and AHTN bioaccumulation factors in maize were lower than 1, therefore no environmental risk would be posed.
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Affiliation(s)
- Abraham Demelash Chane
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic
| | - Zdeněk Košnář
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic.
| | - Tereza Hřebečková
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic
| | - Lucie Wiesnerová
- Department of Horticulture, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic; Faculty of Medicine in Pilsen, Department of Medical Chemistry and Biochemistry, Charles University in Prague, Husova 3, 301 00, Plzeň, Czech Republic
| | - Miroslav Jozífek
- Department of Horticulture, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic
| | - Petr Doležal
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic
| | - Lukáš Praus
- Laboratory of Environmental Chemistry, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic
| | - Pavel Tlustoš
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Praha, Suchdol, Czech Republic
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10
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Sharma P, Singh SP, Iqbal HMN, Tong YW. Editorial: Synergistic interaction of plants and microbes for removal of toxic elements/chemicals: multidisciplinary approaches for a sustainable environment. Front Microbiol 2023; 14:1222164. [PMID: 37455715 PMCID: PMC10348905 DOI: 10.3389/fmicb.2023.1222164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023] Open
Affiliation(s)
- Pooja Sharma
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
| | - Surendra Pratap Singh
- Plant Molecular Biology Laboratory, Department of Botany, Dayanand Anglo-Vedic (PG) College, Chhatrapati Shahu Ji Maharaj University, Kanpur, India
| | - Hafiz M. N. Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, Mexico
| | - Yen Wah Tong
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
- Energy and Environmental Sustainability for Megacities (E2S2) Phase II, Campus for Research Excellence and Technological Enterprise (CREATE), Singapore, Singapore
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
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11
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Giri A, Pant D, Chandra Srivastava V, Kumar M, Kumar A, Goswami M. Plant -microbe assisted emerging contaminants (ECs) removal and carbon cycling. BIORESOURCE TECHNOLOGY 2023:129395. [PMID: 37380038 DOI: 10.1016/j.biortech.2023.129395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/22/2023] [Accepted: 06/24/2023] [Indexed: 06/30/2023]
Abstract
Continuous increase in the level of atmospheric CO2 and environmental contaminates has aggravated various threats resulting from environmental pollution and climate change. Research into plant -microbe interaction has been a central concern of ecology for over the year. However, despite the clear contribution of plant -microbe to the global carbon cycle, the role of plant -microbe interaction in carbon pools, fluxes and emerging contaminants (ECs) removal are still a poorly understood. The use of plant and microbes in ECs removal and carbon cycling is an attractive strategy because microbes operate as biocatalysts to remove contaminants and plant roots offer a rich niche for their growth and carbon cycling. However, bio-mitigation of CO2 and removal of ECs is still under research phase because of the CO2 capture and fixation efficiency is too low for industrial purposes and cutting-edge removal methods have not been created for such emerging contaminants.
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Affiliation(s)
- Anand Giri
- School of Civil and Environmental Engineering, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Deepak Pant
- Departments of Environmental Sciences, Central University of Himachal Pradesh, Dharamshala 176215, India.
| | - Vimal Chandra Srivastava
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
| | - Manoj Kumar
- Indian Oil Corporation R&D Centre, Sector 13, Faridabad, India
| | - Ashok Kumar
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan 173234, India
| | - Meera Goswami
- Department of Zoology and Environmental Science, Gurukul Kangri (Deemed to Be University), Haridwar 249404, Uttarakhand, India
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Loureiro DB, Lario LD, Herrero MS, Salvatierra LM, Novo LAB, Pérez LM. Potential of Salvinia biloba Raddi for removing atrazine and carbendazim from aquatic environments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:22089-22099. [PMID: 36282385 PMCID: PMC9938052 DOI: 10.1007/s11356-022-23725-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
In this exploratory study, naturally occurring Salvinia biloba Raddi specimens were assessed for atrazine and carbendazim polluted water remediation. Experiments were carried out over 21 days in glass vessels containing deionized water artificially contaminated with 0, 5, 10, and 20 mg L-1 of atrazine or carbendazim. Atrazine had a pronounced detrimental impact on S. biloba, as no biomass development was observed in all macrophytes exposed to this herbicide in the entire concentration range. However, carbendazim-treated plants were able to grow and survive in the polluted medium even when subjected to the highest concentration of this fungicide (i.e., 20 mg L-1). In addition, increased chlorosis and necrosis were also detected in plants subjected to carbendazim as a result of the high phytotoxicity caused by atrazine. A maximal removal efficiency of ~ 30% was observed for both pesticides at 5 mg L-1 and decreased with increasing concentrations of the pollutants. The spectrum of the FTIR-ATR analysis revealed the existence of various functional groups (e.g., amide, carboxyl, hydroxyl, phosphate, sulfate) on the plants, which could be related to pesticide biosorption. In addition, at the end of the 21-day assay, seven carbendazim-resistant bacteria could be isolated from the roots of fungicide-treated plants. Therefore, the use of autochthonous free-floating S. biloba macrophytes for phytoremediation of aquatic environments contaminated with carbendazim shows great promise. Still, additional research is required to further elucidate the plant-mediated carbendazim elimination process and the role of the herbicide-resistant bacteria, and seek alternative species capable of mitigating atrazine contamination.
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Affiliation(s)
- Dana B Loureiro
- Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA-campus Rosario), Av. Pellegrini 3314, S2002QEO, Rosario (Santa Fe), Argentina
| | - Luciana D Lario
- Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA-campus Rosario), Av. Pellegrini 3314, S2002QEO, Rosario (Santa Fe), Argentina
- Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Montevideo 3371, S2002QAC, Rosario (Santa Fe), Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ministerio de Ciencia, Tecnología e Innovación Productiva, Godoy Cruz 2290, C1425FQB, Buenos Aires, Argentina
| | - María S Herrero
- Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA-campus Rosario), Av. Pellegrini 3314, S2002QEO, Rosario (Santa Fe), Argentina
- Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Montevideo 3371, S2002QAC, Rosario (Santa Fe), Argentina
| | - Lucas M Salvatierra
- Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA-campus Rosario), Av. Pellegrini 3314, S2002QEO, Rosario (Santa Fe), Argentina
- Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Montevideo 3371, S2002QAC, Rosario (Santa Fe), Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ministerio de Ciencia, Tecnología e Innovación Productiva, Godoy Cruz 2290, C1425FQB, Buenos Aires, Argentina
| | - Luís A B Novo
- Scotland's Rural College, West Mains Road, The King's Buildings, Edinburgh, EH9 3JG, UK.
| | - Leonardo M Pérez
- Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA-campus Rosario), Av. Pellegrini 3314, S2002QEO, Rosario (Santa Fe), Argentina
- Instituto de Investigaciones en Ingeniería Ambiental, Química y Biotecnología Aplicada (INGEBIO), Facultad de Química e Ingeniería del Rosario, Pontificia Universidad Católica Argentina (UCA), Montevideo 3371, S2002QAC, Rosario (Santa Fe), Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ministerio de Ciencia, Tecnología e Innovación Productiva, Godoy Cruz 2290, C1425FQB, Buenos Aires, Argentina
- Laboratori de Microbiologia Sanitària i Mediambiental (MSMLab), Universitat Politècnica de Catalunya (UPC-BarcelonaTech), Rambla de Sant Nebridi 22, 08222, Terrassa (Barcelona), Spain
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13
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Ghitti E, Rolli E, Crotti E, Borin S. Flavonoids Are Intra- and Inter-Kingdom Modulator Signals. Microorganisms 2022; 10:microorganisms10122479. [PMID: 36557733 PMCID: PMC9781135 DOI: 10.3390/microorganisms10122479] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/07/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Flavonoids are a broad class of secondary metabolites with multifaceted functionalities for plant homeostasis and are involved in facing both biotic and abiotic stresses to sustain plant growth and health. Furthermore, they were discovered as mediators of plant networking with the surrounding environment, showing a surprising ability to perform as signaling compounds for a multitrophic inter-kingdom level of communication that influences the plant host at the phytobiome scale. Flavonoids orchestrate plant-neighboring plant allelopathic interactions, recruit beneficial bacteria and mycorrhizal fungi, counteract pathogen outbreak, influence soil microbiome and affect plant physiology to improve its resilience to fluctuating environmental conditions. This review focuses on the diversified spectrum of flavonoid functions in plants under a variety of stresses in the modulation of plant morphogenesis in response to environmental clues, as well as their role as inter-kingdom signaling molecules with micro- and macroorganisms. Regarding the latter, the review addresses flavonoids as key phytochemicals in the human diet, considering their abundance in fruits and edible plants. Recent evidence highlights their role as nutraceuticals, probiotics and as promising new drugs for the treatment of several pathologies.
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Aslam MM, Karanja JK, Dodd IC, Waseem M, Weifeng X. Rhizosheath: An adaptive root trait to improve plant tolerance to phosphorus and water deficits? PLANT, CELL & ENVIRONMENT 2022; 45:2861-2874. [PMID: 35822342 PMCID: PMC9544408 DOI: 10.1111/pce.14395] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 06/09/2023]
Abstract
Drought and nutrient limitations adversely affect crop yields, with below-ground traits enhancing crop production in these resource-poor environments. This review explores the interacting biological, chemical and physical factors that determine rhizosheath (soil adhering to the root system) development, and its influence on plant water uptake and phosphorus acquisition in dry soils. Identification of quantitative trait loci for rhizosheath development indicate it is genetically determined, but the microbial community also directly (polysaccharide exudation) and indirectly (altered root hair development) affect its extent. Plants with longer and denser root hairs had greater rhizosheath development and increased P uptake efficiency. Moreover, enhanced rhizosheath formation maintains contact at the root-soil interface thereby assisting water uptake from drying soil, consequently improving plant survival in droughted environments. Nevertheless, it can be difficult to determine if rhizosheath development is a cause or consequence of improved plant adaptation to dry and nutrient-depleted soils. Does rhizosheath development directly enhance plant water and phosphorus use, or do other tolerance mechanisms allow plants to invest more resources in rhizosheath development? Much more work is required on the interacting genetic, physical, biochemical and microbial mechanisms that determine rhizosheath development, to demonstrate that selection for rhizosheath development is a viable crop improvement strategy.
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Affiliation(s)
- Mehtab Muhammad Aslam
- Center for Plant Water‐Use and Nutrition Regulation, College of Resource and EnvironmentFujian Agriculture and Forestry UniversityFuzhouFujianChina
- College of AgricultureYangzhou UniversityYangzhouJiangsuChina
- State Key Laboratory of Agrobiotechnology, School of Life SciencesThe Chinese University of Hong KongShatinHong Kong
| | - Joseph K. Karanja
- Center for Plant Water‐Use and Nutrition Regulation, College of Resource and EnvironmentFujian Agriculture and Forestry UniversityFuzhouFujianChina
| | - Ian C. Dodd
- The Lancaster Environment CentreLancaster UniversityLancasterUK
| | | | - Xu Weifeng
- Center for Plant Water‐Use and Nutrition Regulation, College of Resource and EnvironmentFujian Agriculture and Forestry UniversityFuzhouFujianChina
- College of AgricultureYangzhou UniversityYangzhouJiangsuChina
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15
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Tripathi A, Pandey P, Tripathi SN, Kalra A. Perspectives and potential applications of endophytic microorganisms in cultivation of medicinal and aromatic plants. FRONTIERS IN PLANT SCIENCE 2022; 13:985429. [PMID: 36247631 PMCID: PMC9560770 DOI: 10.3389/fpls.2022.985429] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
Ensuring food and nutritional security, it is crucial to use chemicals in agriculture to boost yields and protect the crops against biotic and abiotic perturbations. Conversely, excessive use of chemicals has led to many deleterious effects on the environment like pollution of soil, water, and air; loss of soil fertility; and development of pest resistance, and is now posing serious threats to biodiversity. Therefore, farming systems need to be upgraded towards the use of biological agents to retain agricultural and environmental sustainability. Plants exhibit a huge and varied niche for endophytic microorganisms inside the planta, resulting in a closer association between them. Endophytic microorganisms play pivotal roles in plant physiological and morphological characteristics, including growth promotion, survival, and fitness. Their mechanism of action includes both direct and indirect, such as mineral phosphate solubilization, fixating nitrogen, synthesis of auxins, production of siderophore, and various phytohormones. Medicinal and aromatic plants (MAPs) hold a crucial position worldwide for their valued essential oils and several phytopharmaceutically important bioactive compounds since ancient times; conversely, owing to the high demand for natural products, commercial cultivation of MAPs is on the upswing. Furthermore, the vulnerability to various pests and diseases enforces noteworthy production restraints that affect both crop yield and quality. Efforts have been made towards enhancing yields of plant crude drugs by improving crop varieties, cell cultures, transgenic plants, etc., but these are highly cost-demanding and time-consuming measures. Thus, it is essential to evolve efficient, eco-friendly, cost-effective simpler approaches for improvement in the yield and health of the plants. Harnessing endophytic microorganisms as biostimulants can be an effective and alternative step. This review summarizes the concept of endophytes, their multidimensional interaction inside the host plant, and the salient benefits associated with endophytic microorganisms in MAPs.
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Affiliation(s)
- Arpita Tripathi
- Microbial Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Faculty of Education, Teerthanker Mahaveer University, Moradabad, India
| | - Praveen Pandey
- Microbial Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
- Division of Plant Breeding and Genetic Resource Conservation, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Shakti Nath Tripathi
- Department of Botany, Nehru Gram Bharati Deemed to be University, Prayagraj, India
| | - Alok Kalra
- Microbial Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
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16
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Prakash O. Lack of kinship with anaerobes is a kind of short-sightedness of agricultural and environmental microbiologists. ENVIRONMENTAL MICROBIOLOGY REPORTS 2022; 14:330-332. [PMID: 35599340 DOI: 10.1111/1758-2229.13058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 06/15/2023]
Abstract
Due to limited diffusion, active root respiration and intense microbial metabolism, rhizosphere and deeper layer of bulk soil often face hypoxic or anaerobic conditions. The majority of the data on plant growth promotion (PGP) and rhizoremediation have been obtained in aerobic conditions using aerobic or facultative anaerobic microbes neglecting anaerobes and actual soil oxygen conditions. Data obtained with a nutrient-rich medium from an aerobic condition do not exactly translate in oxygen-stressed oligotrophic environments of soil, leading to failure of hypothesis and microbial technology for PGP and pollutants remediation. Anaerobes are key players in the soil ecosystems and participate in the different biogeochemical processes of ecological and environmental significance. This Opinion article aims to divert the attention of agricultural and environmental Microbiologists towards neglected anaerobes and anaerobic processes to develop successful and sustainable PGP and pollutants removal by rhizospheric microorganisms.
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Affiliation(s)
- Om Prakash
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune 411007, Maharashtra, India
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17
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Wang A, Fu W, Feng Y, Liu Z, Song D. Synergetic effects of microbial-phytoremediation reshape microbial communities and improve degradation of petroleum contaminants. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128396. [PMID: 35236043 DOI: 10.1016/j.jhazmat.2022.128396] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/20/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Microbial-phytoremediation is an effective bioremediation technology that introduces petroleum-degrading bacteria and oil-tolerant plants into oil-contaminated soils in order to achieve effective degradation of total petroleum hydrocarbons (TPH). In this work, natural attenuation (NA), microbial remediation (MR, using Acinetobacter sp. Tust-DM21), phytoremediation (PR, using Suaeda glauca), and microbial-phytoremediation (MPR, using both species) were utilized to degrade petroleum hydrocarbons. We evaluated four different biological treatments, assessing TPH degradation rates, soil enzyme activities, and the structure of microbial community in the petroleum-contaminated soil. This finding revealed that the roots of Suaeda glauca adsorbed small amounts of polycyclic aromatic hydrocarbons, causing the structure of soil microbiota community to reshape. The abundance of petroleum-degrading bacteria and plant growth-promoting rhizobacteria (PGPR) has increased, as has microbial diversity. According to correlation research, these genera increased soil enzyme activity, boosted the number of degradation-functional genes in the petroleum hydrocarbon degradation pathway, and accelerated the dissipation and degradation of TPH in petroleum-contaminated soil. This evidence contributes to a better understanding of the mechanisms involved in the combined microbial-phytoremediation strategies for contaminated soil, specifically the interaction between microflora and plants in co-remediation and the effects on the structural reshaping of rhizosphere microbial communities.
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Affiliation(s)
- Ao Wang
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Wenxian Fu
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yu Feng
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Zhimin Liu
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Donghui Song
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin 300457, China.
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18
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Bioremediation of 27 Micropollutants by Symbiotic Microorganisms of Wetland Macrophytes. SUSTAINABILITY 2022. [DOI: 10.3390/su14073944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Micropollutants in bodies of water represent many challenges. We addressed these challenges by the application of constructed wetlands, which represent advanced treatment technology for the removal of micropollutants from water. However, which mechanisms specifically contribute to the removal efficiency often remains unclear. Methods: Here, we focus on the removal of 27 micropollutants by bioremediation. For this, macrophytes Phragmites australis, Iris pseudacorus and Lythrum salicaria were taken from established wetlands, and a special experimental set-up was designed. In order to better understand the impact of the rhizosphere microbiome, we determined the microbial composition using 16S rRNA gene sequencing and investigated the role of identified genera in the micropollutant removal of micropollutants. Moreover, we studied the colonization of macrophyte roots by arbuscular mycorrhizal fungi, which are known for their symbiotic relationship with plants. This symbiosis could result in increased removal of present micropollutants. Results: We found Iris pseudacorus to be the most successful bioremediative system, as it removed 22 compounds, including persistent ones, with more than 80% efficiency. The most abundant genera that contributed to the removal of micropollutants were Pseudomonas, Flavobacterium, Variovorax, Methylotenera, Reyranella, Amaricoccus and Hydrogenophaga. Iris pseudacorus exhibited the highest colonization rate (56%). Conclusions: Our experiments demonstrate the positive impact of rhizosphere microorganisms on the removal of micropollutants.
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Escolà Casas M, Matamoros V. Linking plant-root exudate changes to micropollutant exposure in aquatic plants (Lemna minor and Salvinia natans). A prospective metabolomic study. CHEMOSPHERE 2022; 287:132056. [PMID: 34481172 DOI: 10.1016/j.chemosphere.2021.132056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Recent findings indicate that plant-root exudates can stimulate plant-associated microorganisms to enhance the biodegradation of contaminants in constructed wetlands. To understand this process, we studied the root-exudation changes of two aquatic plants (Lemna minor and Salvinia natans) upon micropollutants exposure (10, 100 and 1000 μg/L mixes containing naproxen, diclofenac, carbamazepine, and benzotriazole). After a 2-day exposure, plant exudates were collected, extracted and non-target analysis was performed with a gas chromatography-high resolution Orbitrap mass-spectrometer. Plants didn't show morphological or growth differences between the control and spiked reactors, but exudation changes were observed in both plants at all concentration levels. Partial least squares discriminant analysis showed that, for Lemna minor, the increase of micropollutants exposure was linked to the reduction of sugar and fatty acid exudation. This may trigger changes in the microbial community living on complex carbon forms. Instead, in Salvinia natans, micropollutants exposure was linked to the release of long-chain compounds such as cuticular waxes and sesquiterpenoids, which might be related to stress signaling. These results demonstrate that plant micropollutant-exposure at environmentally relevant concentration levels triggers changes in root exudates. This may help to design new strategies to enhance micropollutants degradation in nature based solutions such as in constructed wetlands.
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Affiliation(s)
| | - Víctor Matamoros
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona, Spain
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20
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Lu Y, Kronzucker HJ, Shi W. Stigmasterol root exudation arising from Pseudomonas inoculation of the duckweed rhizosphere enhances nitrogen removal from polluted waters. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117587. [PMID: 34182390 DOI: 10.1016/j.envpol.2021.117587] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/25/2021] [Accepted: 06/10/2021] [Indexed: 06/13/2023]
Abstract
Rhizospheric microorganisms such as denitrifying bacteria are able to affect 'rhizobioaugmention' in aquatic plants and can help boost wastewater purification by benefiting plant growth, but little is known about their effects on the production of plant root exudates, and how such exudates may affect microorganismal nitrogen removal. Here, we assess the effects of the rhizospheric Pseudomonas inoculant strain RWX31 on the root exudate profile of the duckweed Spirodela polyrrhiza, using gas chromatography/mass spectrometry. Compared to untreated plants, inoculation with RWX31 specifically induced the exudation of two sterols, stigmasterol and β-sitosterol. An authentic standard assay revealed that stigmasterol significantly promoted nitrogen removal and biofilm formation by the denitrifying bacterial strain RWX31, whereas β-sitosterol had no effect. Assays for denitrifying enzyme activity were conducted to show that stigmasterol stimulated nitrogen removal by targeting nitrite reductase in bacteria. Enhanced N removal from water by stigmasterol, and a synergistic stimulatory effect with RWX31, was observed in open duckweed cultivation systems. We suggest that this is linked to a modulation of community composition of nirS- and nirK-type denitrifying bacteria in the rhizosphere, with a higher abundance of Bosea, Rhizobium, and Brucella, and a lower abundance of Rubrivivax. Our findings provide important new insights into the interaction of duckweed with the rhizospheric bacterial strain RWX31 and their involvement in the aquatic N cycle and offer a new path toward more effective bio-formulations for the purification of N-polluted waters.
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Affiliation(s)
- Yufang Lu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Herbert J Kronzucker
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada; School of BioSciences, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Weiming Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
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21
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Saravanan A, Senthil Kumar P, Jeevanantham S, Karishma S, Tajsabreen B, Yaashikaa PR, Reshma B. Effective water/wastewater treatment methodologies for toxic pollutants removal: Processes and applications towards sustainable development. CHEMOSPHERE 2021; 280:130595. [PMID: 33940449 DOI: 10.1016/j.chemosphere.2021.130595] [Citation(s) in RCA: 141] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 05/16/2023]
Abstract
Release of pollutants due to inflating anthropogenic activities has a conspicuous effect on the environment. As water is uniquely vulnerable to pollution, water pollution control has received a considerable attention among the most critical environmental challenges. Diverse sources such as heavy metals, dyes, pathogenic and organic compounds lead to deterioration in water quality. Demand for the pollutant free water has created a greater concern in water treatment technologies. The pollutants can be mitigated through physical, chemical and biological methodologies thereby alleviating the health and environmental effects caused. Diverse technologies for wastewater treatment with an accentuation on pre-treatment of feedstock and post treatment are concisely summed up. Pollutants present in the water can be removed by processes some of which include filtration, reverse osmosis, degasification, sedimentation, flocculation, precipitation and adsorption. Membrane separation and adsorption methodologies utilized to control water pollution and are found to be more effective than conventional methods and established recovery processes. This audit relatively features different methodologies that show remarkable power of eliminating pollutants from wastewater. This review describes recent research development on wastewater treatment and its respective benefits/applications in field scale were discussed. Finally, the difficulties in the enhancement of treatment methodologies for pragmatic commercial application are recognized and the future viewpoints are introduced.
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Affiliation(s)
- A Saravanan
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - P Senthil Kumar
- Deprtament of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
| | - S Jeevanantham
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - S Karishma
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - B Tajsabreen
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - P R Yaashikaa
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, India
| | - B Reshma
- Deprtament of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India
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22
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Segura A, Udaondo Z, Molina L. PahT regulates carbon fluxes in Novosphingobium sp. HR1a and influences its survival in soil and rhizospheres. Environ Microbiol 2021; 23:2969-2991. [PMID: 33817928 PMCID: PMC8360164 DOI: 10.1111/1462-2920.15509] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/29/2021] [Accepted: 04/03/2021] [Indexed: 01/23/2023]
Abstract
Novosphingobium sp. HR1a is a good biodegrader of PAHs and aromatic compounds, and also a good colonizer of rhizospheric environments. It was previously demonstrated that this microbe is able to co-metabolize nutrients existing in root exudates together with the PAHs. We have revealed here that PahT, a regulator of the IclR-family, regulates the central carbon fluxes favouring the degradation of PAHs and mono-aromatic compounds, the ethanol and acetate metabolism and the uptake, phosphorylation and further degradation of mono- and oligo-saccharides through a phosphoenolpyruvate transferase system (PTS). As final products of these fluxes, pyruvate and acetyl-CoA are obtained. The pahT gene is located within a genomic region containing two putative transposons that carry all the genes for PAH catabolism; PahT also regulates these genes. Furthermore, encoded in this genomic region, there are genes that are involved in the recycling of phosphoenolpyruvate, from the obtained pyruvate, which is the motor molecule involved in the saccharide uptake by the PTS system. The co-metabolism of PAHs with different carbon sources, together with the activation of the thiosulfate utilization and an alternative cytochrome oxidase system, also regulated by PahT, represents an advantage for Novosphingobium sp. HR1a to survive in rhizospheric environments.
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Affiliation(s)
- Ana Segura
- Environmental Protection Department, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, Granada, 18008, Spain
| | - Zulema Udaondo
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Lázaro Molina
- Environmental Protection Department, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, C/Profesor Albareda 1, Granada, 18008, Spain
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Massot F, Gkorezis P, Van Hamme J, Marino D, Trifunovic BS, Vukovic G, d'Haen J, Pintelon I, Giulietti AM, Merini L, Vangronsveld J, Thijs S. Isolation, Biochemical and Genomic Characterization of Glyphosate Tolerant Bacteria to Perform Microbe-Assisted Phytoremediation. Front Microbiol 2021; 11:598507. [PMID: 33519737 PMCID: PMC7840833 DOI: 10.3389/fmicb.2020.598507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/17/2020] [Indexed: 11/16/2022] Open
Abstract
The large-scale use of the herbicide glyphosate leads to growing ecotoxicological and human health concerns. Microbe-assisted phytoremediation arises as a good option to remove, contain, or degrade glyphosate from soils and waterbodies, and thus avoid further spreading to non-target areas. To achieve this, availability of plant-colonizing, glyphosate-tolerant and -degrading strains is required and at the same time, it must be linked to plant-microorganism interaction studies focusing on a substantive ability to colonize the roots and degrade or transform the herbicide. In this work, we isolated bacteria from a chronically glyphosate-exposed site in Argentina, evaluated their glyphosate tolerance using the minimum inhibitory concentration assay, their in vitro degradation potential, their plant growth-promotion traits, and performed whole genome sequencing to gain insight into the application of a phytoremediation strategy to remediate glyphosate contaminated agronomic soils. Twenty-four soil and root-associated bacterial strains were isolated. Sixteen could grow using glyphosate as the sole source of phosphorous. As shown in MIC assay, some strains tolerated up to 10000 mg kg–1 of glyphosate. Most of them also demonstrated a diverse spectrum of in vitro plant growth-promotion traits, confirmed in their genome sequences. Two representative isolates were studied for their root colonization. An isolate of Ochrobactrum haematophilum exhibited different colonization patterns in the rhizoplane compared to an isolate of Rhizobium sp. Both strains were able to metabolize almost 50% of the original glyphosate concentration of 50 mg l–1 in 9 days. In a microcosms experiment with Lotus corniculatus L, O. haematophilum performed better than Rhizobium, with 97% of glyphosate transformed after 20 days. The results suggest that L. corniculatus in combination with to O. haematophilum can be adopted for phytoremediation of glyphosate on agricultural soils. An effective strategy is presented of linking the experimental data from the isolation of tolerant bacteria with performing plant-bacteria interaction tests to demonstrate positive effects on the removal of glyphosate from soils.
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Affiliation(s)
- Francisco Massot
- Cátedra de Biotecnología, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín, Argentina.,Instituto de Nanobiotecnología (NANOBIOTEC), CONICET-Universidad de Buenos Aires, Junín, Argentina
| | - Panagiotis Gkorezis
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jonathan Van Hamme
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, Canada
| | - Damian Marino
- Centro de Investigaciones del Medio Ambiente, Facultad de Ciencias Exactas, Universidad Nacional de la Plata (UNLP), La Plata, Argentina
| | | | - Gorica Vukovic
- Department of Phytomedicine, Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | - Jan d'Haen
- Institute for Materials Research (IMO-IMEC), Hasselt University, Diepenbeek, Belgium
| | - Isabel Pintelon
- Laboratory of Cell Biology and Histology, University of Antwerp, Antwerp, Belgium
| | - Ana María Giulietti
- Cátedra de Biotecnología, Departamento de Microbiología, Inmunología, Biotecnología y Genética, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín, Argentina.,Instituto de Nanobiotecnología (NANOBIOTEC), CONICET-Universidad de Buenos Aires, Junín, Argentina
| | | | - Jaco Vangronsveld
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.,Department of Plant Physiology and Biophysics, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Lublin, Poland
| | - Sofie Thijs
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
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24
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Hoang SA, Lamb D, Seshadri B, Sarkar B, Choppala G, Kirkham MB, Bolan NS. Rhizoremediation as a green technology for the remediation of petroleum hydrocarbon-contaminated soils. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123282. [PMID: 32634659 DOI: 10.1016/j.jhazmat.2020.123282] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 05/22/2023]
Abstract
Rhizoremediation is increasingly becoming a green and sustainable alternative to physico-chemical methods for remediation of contaminated environments through the utilization of symbiotic relationship between plants and their associated soil microorganisms in the root zone. The overall efficiency can be enhanced by identifying suitable plant-microbe combinations for specific contaminants and supporting the process with the application of appropriate soil amendments. This approach not only involves promoting the existing activity of plants and soil microbes, but also introduces an adequate number of microorganisms with specific catabolic activity. Here, we reviewed recent literature on the main mechanisms and key factors in the rhizoremediation process with a particular focus on soils contaminated with total petroleum hydrocarbon (TPH). We then discuss the potential of different soil amendments to accelerate the remediation efficiency based on biostimulation and bioaugmentation processes. Notwithstanding some successes in well-controlled environments, rhizoremediation of TPH under field conditions is still not widespread and considered less attractive than physico-chemical methods. We catalogued the major pitfalls of this remediation approach at the field scale in TPH-contaminated sites and, provide some applicable situations for the future successful use of in situ rhizoremediation of TPH-contaminated soils.
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Affiliation(s)
- Son A Hoang
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia; Division of Urban Infrastructural Engineering, Mien Trung University of Civil Engineering, Phu Yen 56000, Viet Nam
| | - Dane Lamb
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Balaji Seshadri
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Girish Choppala
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, United States
| | - Nanthi S Bolan
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre (ATC) Building, Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
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26
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Laczi K, Erdeiné Kis Á, Szilágyi Á, Bounedjoum N, Bodor A, Vincze GE, Kovács T, Rákhely G, Perei K. New Frontiers of Anaerobic Hydrocarbon Biodegradation in the Multi-Omics Era. Front Microbiol 2020; 11:590049. [PMID: 33304336 PMCID: PMC7701123 DOI: 10.3389/fmicb.2020.590049] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/26/2020] [Indexed: 12/17/2022] Open
Abstract
The accumulation of petroleum hydrocarbons in the environment substantially endangers terrestrial and aquatic ecosystems. Many microbial strains have been recognized to utilize aliphatic and aromatic hydrocarbons under aerobic conditions. Nevertheless, most of these pollutants are transferred by natural processes, including rain, into the underground anaerobic zones where their degradation is much more problematic. In oxic zones, anaerobic microenvironments can be formed as a consequence of the intensive respiratory activities of (facultative) aerobic microbes. Even though aerobic bioremediation has been well-characterized over the past few decades, ample research is yet to be done in the field of anaerobic hydrocarbon biodegradation. With the emergence of high-throughput techniques, known as omics (e.g., genomics and metagenomics), the individual biodegraders, hydrocarbon-degrading microbial communities and metabolic pathways, interactions can be described at a contaminated site. Omics approaches provide the opportunity to examine single microorganisms or microbial communities at the system level and elucidate the metabolic networks, interspecies interactions during hydrocarbon mineralization. Metatranscriptomics and metaproteomics, for example, can shed light on the active genes and proteins and functional importance of the less abundant species. Moreover, novel unculturable hydrocarbon-degrading strains and enzymes can be discovered and fit into the metabolic networks of the community. Our objective is to review the anaerobic hydrocarbon biodegradation processes, the most important hydrocarbon degraders and their diverse metabolic pathways, including the use of various terminal electron acceptors and various electron transfer processes. The review primarily focuses on the achievements obtained by the current high-throughput (multi-omics) techniques which opened new perspectives in understanding the processes at the system level including the metabolic routes of individual strains, metabolic/electric interaction of the members of microbial communities. Based on the multi-omics techniques, novel metabolic blocks can be designed and used for the construction of microbial strains/consortia for efficient removal of hydrocarbons in anaerobic zones.
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Affiliation(s)
- Krisztián Laczi
- Department of Biotechnology, University of Szeged, Szeged, Hungary
| | - Ágnes Erdeiné Kis
- Department of Biotechnology, University of Szeged, Szeged, Hungary.,Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Árpád Szilágyi
- Department of Biotechnology, University of Szeged, Szeged, Hungary
| | - Naila Bounedjoum
- Department of Biotechnology, University of Szeged, Szeged, Hungary.,Institute of Environmental and Technological Sciences, University of Szeged, Szeged, Hungary
| | - Attila Bodor
- Department of Biotechnology, University of Szeged, Szeged, Hungary.,Institute of Biophysics, Biological Research Centre, Szeged, Hungary.,Institute of Environmental and Technological Sciences, University of Szeged, Szeged, Hungary
| | | | - Tamás Kovács
- Department of Biotechnology, Nanophagetherapy Center, Enviroinvest Corporation, Pécs, Hungary
| | - Gábor Rákhely
- Department of Biotechnology, University of Szeged, Szeged, Hungary.,Institute of Biophysics, Biological Research Centre, Szeged, Hungary.,Institute of Environmental and Technological Sciences, University of Szeged, Szeged, Hungary
| | - Katalin Perei
- Department of Biotechnology, University of Szeged, Szeged, Hungary.,Institute of Environmental and Technological Sciences, University of Szeged, Szeged, Hungary
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Feng NX, Liang QF, Feng YX, Xiang L, Zhao HM, Li YW, Li H, Cai QY, Mo CH, Wong MH. Improving yield and quality of vegetable grown in PAEs-contaminated soils by using novel bioorganic fertilizer. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:139883. [PMID: 32544682 DOI: 10.1016/j.scitotenv.2020.139883] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/30/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
Phthalate acid esters (PAEs) are ubiquitous pollutants in agricultural soils. Application of bioorganic fertilizer (BOF) containing beneficial microbes represents a promising approach to improve the yield and quality of crops grown in contaminated soils. In the present study, a novel multifunctional bioorganic fertilizer N-BOF was developed by using compost of sewage sludge and agricultural waste and inoculating with PAEs-degrading B. megaterium YJB3 and phosphate solubilizing B. megaterium YLYP1. Its feasibility of improving the yield and quality of vegetable grown in PAEs (including DBP and DEHP) contaminated soil was evaluated by pot experiments. The N-BOF could effectively promote plant growth, with biomass increasing by 4-66.9% and 19-110% compared to chemical (CF) and no fertilizer (CK), respectively. The concentrations of DBP and DEHP in shoots of chemically fertilised vegetable ranged 1.23-3.12 mg/kg (dry weight, DW) and 1.63-3.89 mg/kg (DW), respectively. Their concentrations were significantly decreased (p < 0.05) when N-BOF was applied (1%, 2%, 5% amendment), especially at higher application rate ranging 0.11-0.3 mg/kg (DW) and 0.16-0.32 mg/kg (DW), respectively. Meanwhile, vegetable quality attributes were also significantly improved when 2% N-BOF was applied, with increase in the contents of vitamin C, vitamin B1, total protein, and starch, and decrease in the contents of nitrite and nitrate. In this case, the human health risk from consumption of the vegetable grown in PAEs-contaminated soil could be significantly reduced. Thus, our study is expected to provide an efficient way of high-value utilization of organic substrates by producing low-cost but high quality N-BOF. Future studies on the effects of N-BOF in terms of fertilizer regimes on yield and quality of the vegetable are needed, and further field studies for assessing the long-term efficacy and reliability of this promising N-BOF are also warranted.
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Affiliation(s)
- Nai-Xian Feng
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Qi-Feng Liang
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yu-Xi Feng
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Lei Xiang
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hai-Ming Zhao
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yan-Wen Li
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hui Li
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Quan-Ying Cai
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ce-Hui Mo
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
| | - Ming-Hung Wong
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China; Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China
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28
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Lacalle RG, Aparicio JD, Artetxe U, Urionabarrenetxea E, Polti MA, Soto M, Garbisu C, Becerril JM. Gentle remediation options for soil with mixed chromium (VI) and lindane pollution: biostimulation, bioaugmentation, phytoremediation and vermiremediation. Heliyon 2020; 6:e04550. [PMID: 32885063 PMCID: PMC7452571 DOI: 10.1016/j.heliyon.2020.e04550] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 07/10/2020] [Accepted: 07/23/2020] [Indexed: 12/15/2022] Open
Abstract
Gentle Remediation Options (GROs), such as biostimulation, bioaugmentation, phytoremediation and vermiremediation, are cost-effective and environmentally-friendly solutions for soils simultaneously polluted with organic and inorganic compounds. This study assessed the individual and combined effectiveness of GROs in recovering the health of a soil artificially polluted with hexavalent chromium [Cr(VI)] and lindane. A greenhouse experiment was performed using organically-amended vs. non-amended mixed polluted soils. All soils received the following treatments: (i) no treatment; (ii) bioaugmentation with an actinobacteria consortium; (iii) vermiremediation with Eisenia fetida; (iv) phytoremediation with Brassica napus; (v) bioaugmentation + vermiremediation; (vi) bioaugmentation + phytoremediation; and (vii) bioaugmentation + vermiremediation + phytoremediation. Soil health recovery was determined based on Cr(VI) and lindane concentrations, microbial properties and toxicity bioassays with plants and worms. Cr(VI) pollution caused high toxicity, but some GROs were able to partly recover soil health: (i) the organic amendment decreased Cr(VI) concentrations, alleviating toxicity; (ii) the actinobacteria consortium was effective at removing both Cr(VI) and lindane; (iii) B. napus and E. fetida had a positive effect on the removal of pollutants and improved microbial properties. The combination of the organic amendment, B. napus, E. fetida and the actinobacteria consortium was the most effective strategy.
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Affiliation(s)
- Rafael G. Lacalle
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bº Sarriena s/n, E-48940, Leioa, Spain
- Corresponding author.
| | - Juan D. Aparicio
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI), CONICET, Av. Belgrano y Pasaje Caseros, 4000, Tucumán, Argentina
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho, 491. 4000, Tucumán, Argentina
| | - Unai Artetxe
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bº Sarriena s/n, E-48940, Leioa, Spain
| | - Erik Urionabarrenetxea
- Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bº Sarriena s/n, 48940, Leioa, Spain
- Department of Zoology and Animal Cell Biology, Research Centre for Experimental Marine Biology and Biotechnology, University of the Basque Country (UPV/EHU), Areatza Z-G, E-48620, Plentzia, Spain
| | - Marta A. Polti
- Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho, 491. 4000, Tucumán, Argentina
- Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, 4000, Tucumán, Argentina
| | - Manuel Soto
- Department of Zoology and Animal Cell Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bº Sarriena s/n, 48940, Leioa, Spain
- Department of Zoology and Animal Cell Biology, Research Centre for Experimental Marine Biology and Biotechnology, University of the Basque Country (UPV/EHU), Areatza Z-G, E-48620, Plentzia, Spain
| | - Carlos Garbisu
- NEIKER, Department of Conservation of Natural Resources, c/Berreaga 1, E-48160, Derio, Spain
| | - José M. Becerril
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bº Sarriena s/n, E-48940, Leioa, Spain
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29
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Di L, Li Y, Nie L, Wang S, Kong F. Influence of plant radial oxygen loss in constructed wetland combined with microbial fuel cell on nitrobenzene removal from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122542. [PMID: 32240899 DOI: 10.1016/j.jhazmat.2020.122542] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 03/09/2020] [Accepted: 03/14/2020] [Indexed: 06/11/2023]
Abstract
This study investigated the effects of radial oxygen loss (ROL) of three different plants on nitrobenzene (NB) wastewater treatment and bioelectricity generation performance in constructed wetland-microbial fuel cell (CW-MFC). ROL and root biomass from wetland plants showed positive effects on NB wastewater compared to unplanted CW-MFC. Scirpus validus exhibited higher tolerance to NB than Typha orientalis and Iris pseudacorus at 20-200 mg/L NB. As NB concentration reached 200 mg/L, the CW-MFC with Scirpus validus had relatively high DO (2.57 ± 0.17 mg/L) and root biomass (16.42 ± 0.18 g/m2), which resulted in the highest power density and voltage (19.5 mW/m2, 590 mV) as well as NB removal efficiency (93.9 %) among four reactors. High-throughput sequencing results suggested that electrochemically active bacteria (EAB) (e.g., Geobacter, Ferruginibacter) and dominant NB-degrading bacteria (e.g., Comamonas, Pseudomonas) could be enhanced by wetland plants, especially in CW-MFC with Scirpus validus. Therefore, Scirpus validus was a good option for simultaneously treating NB wastewater and producing bioelectricity.
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Affiliation(s)
- Liyan Di
- College of Environmental Sciences and Engineering, Qingdao University, Qingdao 266071, China
| | - Yue Li
- College of Environmental Sciences and Engineering, Qingdao University, Qingdao 266071, China
| | - Likai Nie
- College of Environmental Sciences and Engineering, Qingdao University, Qingdao 266071, China
| | - Sen Wang
- College of Environmental Sciences and Engineering, Qingdao University, Qingdao 266071, China.
| | - Fanlong Kong
- College of Environmental Sciences and Engineering, Qingdao University, Qingdao 266071, China.
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30
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Wang Q, Hou J, Yuan J, Wu Y, Liu W, Luo Y, Christie P. Evaluation of fatty acid derivatives in the remediation of aged PAH-contaminated soil and microbial community and degradation gene response. CHEMOSPHERE 2020; 248:125983. [PMID: 32004887 DOI: 10.1016/j.chemosphere.2020.125983] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 12/16/2019] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
In this study, derivatives of two common fatty acids in plant root exudates, sodium palmitate and sodium linoleate (sodium aliphatates), were added to an aged Polycyclic aromatic hydrocarbons (PAHs) contaminated soil to estimate their effectiveness in the removal of PAHs. Sodium linoleate was more effective in lowering PAHs and especially high-molecular-weight (4-6 ring) PAHs (HMW-PAHs). Principal coordinates analysis (PCoA) indicates that both amendments led to a shift in the soil bacterial community. Moreover, linear discriminant effect size (LEfSe) analysis demonstrates that the specific PAHs degraders Pseudomonas, Arenimonas, Pseudoxanthomonas and Lysobacter belonging to the γ-proteobacteria and Nocardia and Rhodococcus belonging to the Actinobacteria were the biomarkers of, respectively, sodium linoleate and sodium palmitate amendments. Correlation analysis suggests that four biomarkers in the sodium linoleate amendment treatment from γ-proteobacteria were all highly linearly negatively related to HMW-PAHs residues (p < 0.01) while two biomarkers in the sodium palmitate amendment treatment from Actinobacteria were highly linearly negatively related to LMW-PAHs residues (p < 0.01). Higher removal efficiency of PAHs (especially HMW-PAHs) in the sodium linoleate amendment treatment than in the sodium palmitate amendment treatment might be ascribed to the specific enrichment of microbes from the γ-proteobacteria. The bacterial functional KEGG orthologs (KOs) assigned to PAHs metabolism and functional C23O and C12O genes related to cleavage of the benzene ring were both up-regulated. These results provide new insight into the mechanisms of the two sodium aliphatate amendments in accelerating PAHs biodegradation and have implications for practical application in the remediation of PAHs-contaminated soils.
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Affiliation(s)
- Qingling Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jinyu Hou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Jing Yuan
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Yucheng Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Wuxing Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Peter Christie
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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31
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Abstract
Pseudomonas putidais a fast-growing bacterium found mostly in temperate soil and water habitats. The metabolic versatility ofP. putidamakes this organism attractive for biotechnological applications such as biodegradation of environmental pollutants and synthesis of added-value chemicals (biocatalysis). This organism has been extensively studied in respect to various stress responses, mechanisms of genetic plasticity and transcriptional regulation of catabolic genes.P. putidais able to colonize the surface of living organisms, but is generally considered to be of low virulence. A number ofP. putidastrains are able to promote plant growth. The aim of this review is to give historical overview of the discovery of the speciesP. putidaand isolation and characterization ofP. putidastrains displaying potential for biotechnological applications. This review also discusses some major findings inP. putidaresearch encompassing regulation of catabolic operons, stress-tolerance mechanisms and mechanisms affecting evolvability of bacteria under conditions of environmental stress.
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32
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Zhang C, Tao Y, Li S, Ke T, Wang P, Wei S, Chen L. Bioremediation of cadmium-trichlorfon co-contaminated soil by Indian mustard (Brassica juncea) associated with the trichlorfon-degrading microbe Aspergillus sydowii: Related physiological responses and soil enzyme activities. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109756. [PMID: 31711776 DOI: 10.1016/j.ecoenv.2019.109756] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/23/2019] [Accepted: 10/01/2019] [Indexed: 05/27/2023]
Abstract
Soil co-contaminated with heavy metals and organics is often difficult to remediate. In this study, pot experiments were conducted to investigate the concurrent removal of cadmium (Cd, two levels: CdL [10 mg kg-1] and CdH [50 mg kg-1]) and trichlorfon (TCF, 100 mg kg-1) from co-contaminated soil by comparing the following remediation methods: natural remediation (NR), soil inoculated with Aspergillus sydowii (AS), soil planted with Brassica juncea (BJ), and soil planted with B. juncea and inoculated with A. sydowii (BJ-AS). The physiological responses of B. juncea and soil enzyme activities after remediation were also studied. B. juncea grew well in co-contaminated soil at both Cd levels. The biomass and chlorophyll content of B. juncea in CdH soil were lower than those in CdL soil, whereas the malondialdehyde content and activities of catalase, peroxidase and superoxide dismutase of B. juncea in CdH soil were higher than those in CdL soil. Cd accumulation in B. juncea was high in CdH soil, whereas high Cd removal efficiency was observed in CdL soil. TCF could be thoroughly degraded within 35 days in NR at both Cd-level soils. AS, BJ and BJ-AS promoted TCF degradation and enhanced the activities of catalase, urease, sucrase and alkaline phosphatase in soil compared with the NR. BJ-AS showed the highest phytoextraction ratio (3.32% in CdL and 1.34% in CdH soil) and TCF degradation rate (half-life of 2.18 and 2.37 days in CdL and CdH soil, respectively). These results demonstrate that BJ-AS could effectively remove Cd and TCF from soil and is thus a feasible technology for the bioremediation of these co-contaminated soil.
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Affiliation(s)
- Chao Zhang
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China
| | - Yue Tao
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China
| | - Shuangxi Li
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China
| | - Tan Ke
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China
| | - Panpan Wang
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China
| | - Sijie Wei
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China
| | - Lanzhou Chen
- College of Resource & Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Hubei Research Center of Environment Remediation Technology, Wuhan University, Wuhan, 430079, China.
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Abstract
The ability of endophytes to colonize every plant tissue has led to the opportunity of using the microorganism in a lot of biological applications. Endophytes are beneficial to their host cells as such its application is observed in every aspects of life. This study therefore endeavored to give an analysis of endophytes, what they were and what they had been used for till the present time. Sampling of several literature studies in endophytes was done in this study to enable a complete understanding of the mechanism of application of the actions of endophytes, so as to be able to do a thorough assessment of the current state in the knowledge of the microbes. From the complete analysis of the literature on the application and use of endophytes, in nutrient asquition and increase the stress tolerance in plants. This study provided a platform for further research gaps through the presentation of what endophytes were, what they had been used for till date, the mechanism of operation of the micro-organism and the type of interaction between them and their hosts. There are still ways to improve on the methods of application of endophytes as a type of biological organism. This will be done by adjusting to the current trends in biological studies using molecular mechanization, following an intensive further study on endophyte mechanisms.
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Waigi MG, Wang J, Yang B, Gudda FO, Ling W, Liu J, Gao Y. Endophytic Bacteria in in planta Organopollutant Detoxification in Crops. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 252:1-50. [PMID: 31451946 DOI: 10.1007/398_2019_33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microbe-assisted organopollutant removal, or in planta crop decontamination, is based on an interactive system between organopollutant-degrading endophytic bacteria (DEBOP) and crops in alleviating organic toxins in plants. This script focuses on the fast-growing body of literature that has recently bloomed in organopollutant control in agricultural plants. The various facets of DEBOP under study include their colonization, distribution, plant growth-promoting mechanisms, and modes of action in the detoxification process in plants. Also, an assessment of the biotechnological advances, advantages, and bottlenecks in accelerating the implementation of this decontamination strategy will be undertaken. The highlighted key research directions from this review will shape the future of agro-environmental sustainability and preservation of human health.
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Affiliation(s)
- Michael Gatheru Waigi
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jian Wang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Bing Yang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Fredrick Owino Gudda
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Wanting Ling
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Juan Liu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yanzheng Gao
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China.
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Molina L, Segura A, Duque E, Ramos JL. The versatility of Pseudomonas putida in the rhizosphere environment. ADVANCES IN APPLIED MICROBIOLOGY 2019; 110:149-180. [PMID: 32386604 DOI: 10.1016/bs.aambs.2019.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This article addresses the lifestyle of Pseudomonas and focuses on how Pseudomonas putida can be used as a model system for biotechnological processes in agriculture, and in the removal of pollutants from soils. In this chapter we aim to show how a deep analysis using genetic information and experimental tests has helped to reveal insights into the lifestyle of Pseudomonads. Pseudomonas putida is a Plant Growth Promoting Rhizobacteria (PGPR) that establishes commensal relationships with plants. The interaction involves a series of functions encoded by core genes which favor nutrient mobilization, prevention of pathogen development and efficient niche colonization. Certain Pseudomonas putida strains harbor accessory genes that confer specific biodegradative properties and because these microorganisms can thrive on the roots of plants they can be exploited to remove pollutants via rhizoremediation, making the consortium plant/Pseudomonas a useful tool to combat pollution.
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Affiliation(s)
- Lázaro Molina
- CSIC- Estación Experimental del Zaidín, Granada, Spain
| | - Ana Segura
- CSIC- Estación Experimental del Zaidín, Granada, Spain
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Alvarez-Cobelas M, Rojo C, Benavent-Corai J. Long-Term Phytoplankton Dynamics in a Complex Temporal Realm. Sci Rep 2019; 9:15967. [PMID: 31685884 PMCID: PMC6828802 DOI: 10.1038/s41598-019-52333-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 10/11/2019] [Indexed: 11/26/2022] Open
Abstract
Faced with an environment of accelerated change, the long-term dynamics of biotic communities can be approached to build a consistent and causal picture of the communities’ life. We have undertaken a 25-year monthly-sampling study on the phytoplankton of a meso-oligotrophic lake, paying attention to controlling factors of overall biomass (TB) and taxonomical group biomass (TGBs). Long-term series included decreased trends of TB and TGBs, and multi-scale periodicity. A decadal TB periodicity emerged related to nitrogen concentration and Cryptophytes. Annual periodicities were mainly related to air and water temperature controlling the abundance of Chlorophytes or Dinoflagellates. Intra-annual cycles could arise from autogenic processes. The analysis by periods revealed relevant dynamics (for example, Diatom periodicities), hidden in the analysis of the complete series. These results allow us to establish that: i) two organizational levels of phytoplankton change differently in time scales from months to decades; ii) controlling factors (climate, water physics and chemistry) act at different time scales and on different TGBs, and iii) different combinations of the “taxonomical group-control factor-trend and periodicity” set throughout the studied time explain total biomass dynamics. A holistic approach (multiple complementary analyses) is necessary to disentangle the different actors and relationships that explain non-stationary long-term phytoplankton dynamics.
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Affiliation(s)
- M Alvarez-Cobelas
- National Museum of Natural History (CSIC), c/ Serrano 115 dpdo, Madrid, E-28006, Spain.
| | - C Rojo
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, c/ Catedrático José Beltrán 2, Paterna, Valencia, E-46980, Spain
| | - J Benavent-Corai
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, c/ Catedrático José Beltrán 2, Paterna, Valencia, E-46980, Spain
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Akkaya Ö, Arslan E. Biotransformation of 2,4-dinitrotoluene by the beneficial association of engineered Pseudomonas putida with Arabidopsis thaliana. 3 Biotech 2019; 9:408. [PMID: 31692640 DOI: 10.1007/s13205-019-1933-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 10/09/2019] [Indexed: 11/29/2022] Open
Abstract
2,4-dinitrotoluene (2,4-DNT) is a priority environmental xenobiotic pollutant which has toxic, mutagenic, and carcinogenic properties. Thus, its biodegradation by applying recent approaches such as taking advantage of plant-bacteria interactions is crucial. In this work, the genes from Burkholderia sp. R34, necessary for 2,4-DNT degradation, were integrated into wild-type Pseudomonas putida (P. putida) KT2440 genome, and this strain, named KT.DNT, was inoculated to soil in in vitro conditions. To estimate the disappearance of 2,4-DNT in contaminated soil, samples were taken from different time intervals, extracted and analyzed using high-performance liquid chromatography (HPLC). Biotransformation of 2,4-DNT increased gradually and the degradation in soil after 14-days of treatment with the bacterium was found to be the 97.1%, indicating that the engineered strain could be a remarkable candidate for in situ bioremediation of 2,4-DNT-contaminated sites. In addition, in vitro interaction of this bacterium with a model plant, Arabidopsis thaliana (A. thaliana), enhanced lateral root and root hair formation together with dry root weight. Moreover, the initial 2,4-DNT concentration was decreased to 68% within 2 h with the plant-associated KT.DNT in liquid culture. Hence, the usage of this bacterium with plants could also be a promising application for the 2,4-DNT biotransformation.
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Affiliation(s)
- Özlem Akkaya
- Department of Molecular Biology and Genetics, Gebze Technical University, 41400 Kocaeli, Turkey
| | - Ebru Arslan
- Department of Molecular Biology and Genetics, Gebze Technical University, 41400 Kocaeli, Turkey
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38
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Ahmad F, Ashraf N, Da-Chuan Y, Jabeen H, Anwar S, Wahla AQ, Iqbal S. Application of a novel bacterial consortium BDAM for bioremediation of bispyribac sodium in wheat vegetated soil. JOURNAL OF HAZARDOUS MATERIALS 2019; 374:58-65. [PMID: 30978631 DOI: 10.1016/j.jhazmat.2019.03.130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 06/09/2023]
Abstract
Plant-bacterial mutualism has tremendous potential for remediation of herbicide contaminated soils. Generally, bacterial inoculation helps plants to grow well in the contaminated environment. Here, we investigated the impact of bispyribac sodium (BS) degrading bacterial consortium (BDAM) on BS remediation, plant growth promotion and BS accumulation in plant parts. Wheat (Triticum aestivum) was planted in BS spiked soil and inoculated with BDAM. Inoculation showed a beneficial effect on plant biomass production and degradation of BS in the rhizosphere and the rhizosheath. After 40 and 60 days of inoculation, the degradation of BS was more than 96% and approximately 100% respectively in the planted and inoculated soil spiked with 2 and 5 mg kg-1 BS. However, in planted and un-inoculated soil, the degradation of BS was 72% after 60 days of sowing. Furthermore, inoculated bacterial strains colonized both in rhizo- and endosphere of the inoculated plants. In comparison with the un-inoculated soil, significantly less accumulation of BS was found in the roots and shoots of the plants growing in inoculated soil. We report the efficiency of plant-bacterial partnership for enhanced biodegradation of BS and to eliminate the BS residual toxicity to non-target plants.
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Affiliation(s)
- Fiaz Ahmad
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Noreen Ashraf
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Yin Da-Chuan
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Hina Jabeen
- Assistant Prof. Head Department of Microbiology, Women University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Samina Anwar
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Jhang Road, Faisalabad, 38000, Pakistan
| | - Abdul Qadeer Wahla
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Jhang Road, Faisalabad, 38000, Pakistan
| | - Samina Iqbal
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Jhang Road, Faisalabad, 38000, Pakistan.
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Liu T, Xu S, Lu S, Qin P, Bi B, Ding H, Liu Y, Guo X, Liu X. A review on removal of organophosphorus pesticides in constructed wetland: Performance, mechanism and influencing factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:2247-2268. [PMID: 30332661 DOI: 10.1016/j.scitotenv.2018.10.087] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/07/2018] [Accepted: 10/07/2018] [Indexed: 05/12/2023]
Abstract
The residues of organophosphorus pesticides (OPPs) have been widely detected in rivers, the gulf, and even groundwater and drinking water, which may pose a serious threat to aquatic ecosystems and human health. Compared to other treatments, constructed wetlands (CWs) have been demonstrated to be a cost-effective alternative risk mitigation strategy for non-point-source pesticide pollution. This review summarizes 32 studies related to the remediation of OPPs in 117 CWs during 2001-2017 worldwide. The performances, mechanisms and influencing factors in the studies are comprehensively and critically reviewed in this paper. Overall, the OPPs were efficiently removed with an efficiency up to 87.22 ± 16.61%. The removal efficiency, differences and related reasons among different types of CWs in developed and developing countries and the different types of OPPs in CWs are well-evaluated in detail. In addition, the main processes for OPPs removal in CWs involve phytoremediation (plant uptake, phytoaccumulation, phytovolatilization and phytodegradation), substrate adsorption or sedimentation, and biodegradation. Based on the quantitative analysis by mass balance, for water-soluble pesticides, the dominant removal process was via microbiological degradation. This result was in contrast to findings obtained with hydrophobic OPPs, for which the dominant processes were biodegradation and sorption by substrate. Therefore, the behavior of microbial transformation prevails. Additionally, the presence of plants can facilitate the elimination of OPPs in CWs, promoting the process by an average percentage of approximately 6.19 ± 9.46%. Statistical analysis shows that loading of inlet OPPs is the largest limiting factor and that the HRT and T are the most significant parameters that influence the efficiency of trapping OPPs in CWs. Simultaneously, we can also obtain suitable parameters for the design and operation of CWs. This review promotes further research on plant-microbe joint combined remediation and examines the different behaviors of water-soluble and hydrophobic OPPs in CWs.
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Affiliation(s)
- Tao Liu
- College of Civil Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Shirong Xu
- College of Civil Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Shaoyong Lu
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China.
| | - Pan Qin
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China
| | - Bin Bi
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China
| | - Haodong Ding
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China
| | - Ying Liu
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China
| | - Xiaochun Guo
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China.
| | - Xiaohui Liu
- State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu (SEPSORSLD), National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, State Key Laboratory of Environmental Criteria an Risk Assessment, Research Centre of Lake Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China; School of Environment, Tsinghua University, Beijing 100084, People's Republic of China.
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40
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Asemoloye MD, Jonathan SG, Ahmad R. Synergistic plant-microbes interactions in the rhizosphere: a potential headway for the remediation of hydrocarbon polluted soils. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:71-83. [PMID: 30656951 DOI: 10.1080/15226514.2018.1474437] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Soil pollution is an unavoidable evil; many crude-oil exploring communities have been identified to be the most ecologically impacted regions around the world due to hydrocarbon pollution and their concurrent health risks. Several clean-up technologies have been reported on the removal of hydrocarbons in polluted soils but most of them are either very expensive, require the integration of advanced mechanization and/or cannot be implemented in small scale. However, "Bioremediation" has been reported as an efficient, cost-effective and environment-friendly technology for clean-up of hydrocarbon"s contaminated soils. Here, we suggest the implementation of synergistic mechanism of bioremediation such as the use of rhizosphere mechanism which involves the actions of plant and microorganisms, which involves the exploitation of plant and microorganisms for effective and speedy remediation of hydrocarbon"s contaminated soils. In this mechanism, plant"s action is synergized with the soil microorganisms through the root rhizosphere to promote soil remediation. The microorganisms benefit from the root metabolites (exudates) and the plant in turn benefits from the microbial recycling/solubilizing of mineral nutrients. Harnessing the abilities of plants and microorganisms is a potential headway for cost-effective clean-up of hydrocarbon"s polluted sites; such technology could be very important in countries with great oil producing activities/records over many years but still developing.
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Affiliation(s)
- Michael Dare Asemoloye
- a Department of Botany, Mycology and Fungal Biotechnology Unit , University of Ibadan , Ibadan , Nigeria
| | - Segun Gbolagade Jonathan
- a Department of Botany, Mycology and Fungal Biotechnology Unit , University of Ibadan , Ibadan , Nigeria
| | - Rafiq Ahmad
- b Department of Environmental Sciences , COMSATS Institute of Information Technology , Abbottabad , Pakistan
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Characteristics of Organic Acid Secretion Associated with the Interaction between Burkholderia multivorans WS-FJ9 and Poplar Root System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9619724. [PMID: 30687759 PMCID: PMC6330825 DOI: 10.1155/2018/9619724] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/17/2018] [Accepted: 12/02/2018] [Indexed: 11/29/2022]
Abstract
The objective of this study was to investigate whether plant-bacteria interaction affects the secretion of organic acids by both organisms and to assess whether the production of IAA by the bacterium increases the secretion of organic acids by root exudates, and if the stress produced by low available phosphorus (P) affects the production of organic acids by bacteria, by roots, or by root exudates in presence of bacterial cultures. With this purpose, we used as a biological model poplar plants and one strain of Burkholderia multivorans able to solubilize P. High performance liquid chromatography was utilized to measure organic acids. The tests, the inductive effects of exogenous indole-3-acetic acid (IAA) on secretion of organic acids, the 2 × 4 × 2 factorial design experiment, and the ability of organic acids to solubilize tricalcium phosphate were performed to investigate the interactive effects. The results showed that, after B. multivorans WS-FJ9 interacted with the poplar root system, the key phosphate-solubilizing driving force was gluconic acid (GA) which was produced in three ways: (1) secreted by the root system in the presence of IAA produced by B. multivorans WS-FJ9; (2) secreted by B. multivorans WS-FJ9; and (3) secreted by the poplar root system in the presence of phosphorus stress. When phosphorus stress was absent, the GA was produced as outlined in (1) and (2) above. These results demonstrated that inoculating B. multivorans WS-FJ9 into the poplar root system could increase the amount of GA secretion and implied that the interaction between B. multivorans WS-FJ9 and the poplar root system could contribute to the increase of P available fraction for poplar plants.
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Thijs S, Sillen W, Truyens S, Beckers B, van Hamme J, van Dillewijn P, Samyn P, Carleer R, Weyens N, Vangronsveld J. The Sycamore Maple Bacterial Culture Collection From a TNT Polluted Site Shows Novel Plant-Growth Promoting and Explosives Degrading Bacteria. FRONTIERS IN PLANT SCIENCE 2018; 9:1134. [PMID: 30123233 PMCID: PMC6085565 DOI: 10.3389/fpls.2018.01134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/13/2018] [Indexed: 05/23/2023]
Abstract
Military activities have worldwide introduced toxic explosives into the environment with considerable effects on soil and plant-associated microbiota. Fortunately, these microorganisms, and their collective metabolic activities, can be harnessed for site restoration via in situ phytoremediation. We characterized the bacterial communities inhabiting the bulk soil and rhizosphere of sycamore maple (Acer pseudoplatanus) in two chronically 2,4,6-trinitrotoluene (TNT) polluted soils. Three hundred strains were isolated, purified and characterized, a majority of which showed multiple plant growth promoting (PGP) traits. Several isolates showed high nitroreductase enzyme activity and concurrent TNT-transformation. A 12-member bacterial consortium, comprising selected TNT-detoxifying and rhizobacterial strains, significantly enhanced TNT removal from soil compared to non-inoculated plants, increased root and shoot weight, and the plants were less stressed than the un-inoculated plants as estimated by the responses of antioxidative enzymes. The sycamore maple tree (SYCAM) culture collection is a significant resource of plant-associated strains with multiple PGP and catalytic properties, available for further genetic and phenotypic discovery and use in field applications.
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Affiliation(s)
- Sofie Thijs
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Wouter Sillen
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Sascha Truyens
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Bram Beckers
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jonathan van Hamme
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, Canada
| | - Pieter van Dillewijn
- Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Pieter Samyn
- Applied and Analytical Chemistry, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Robert Carleer
- Applied and Analytical Chemistry, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Nele Weyens
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
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Fu W, Xu M, Sun K, Hu L, Cao W, Dai C, Jia Y. Biodegradation of phenanthrene by endophytic fungus Phomopsis liquidambari in vitro and in vivo. CHEMOSPHERE 2018; 203:160-169. [PMID: 29614409 DOI: 10.1016/j.chemosphere.2018.03.164] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 03/03/2018] [Accepted: 03/24/2018] [Indexed: 06/08/2023]
Abstract
Phenanthrene, as a widespread polycyclic aromatic hydrocarbons (PAHs) contaminant in vitro and in vivo of plant, has the characteristics of carcinogenicity, teratogenicity and mutagenicity. This work aimed to explore the phenanthrene metabolic mechanism by Phomopsis liquidambari in vitro, as well as the bioremediation ability through P. liquidambari-rice combination. This strain was able to use phenanthrene as source of carbon and energy to grow, more than 77% of added 50 mg L-1 phenanthrene was removed after 10 d in MSM. We identified the metabolic products via HPLC-MS and proposed two possible degradation pathways. Phenanthrene was firstly combined with oxygen to become phenanthrene 9,10-oxide, and then degraded to 9-phenanthrol, followed by oxidization to 9,10-dihydroxyphenanthrene. In addition, that epoxide (phenanthrene 9,10-oxide) was also hydrolyzed to phenanthrene trans-9,10-dihydrodiol, and then dehydrogenized to 9,10-dihydroxyphenanthrene, which was further degraded to 9,10-phenanthrenequinone; during this metabolic pathway, the changes of P450 monooxygenase, epoxide hydrolase, dehydrogenase and catechol 2,3-dioxygenase activities and their corresponding gene transcription levels were closely related. What's more, P. liquidambari could combine with rice to eliminate phenanthrene accumulated in vivo of rice seedlings, and the removal rate in inoculation treatment represented a significant difference (increased 25.68%) compared with uninoculation treatment after cultivation 30 d. Therefore, we concluded that P. liquidambari could not only respond to phenanthrene pollution stress in vitro but also exert a mitigation effect on plants accumulated phenanthrene. This work provides a foundation for applying endophytic fungi to PAHs bioremediation in vitro and in vivo.
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Affiliation(s)
- Wanqiu Fu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Man Xu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Kai Sun
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Liyan Hu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Wei Cao
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Chuanchao Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Yong Jia
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
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Sun K, Habteselassie MY, Liu J, Li S, Gao Y. Subcellular distribution and biotransformation of phenanthrene in pakchoi after inoculation with endophytic Pseudomonas sp. as probed using HRMS coupled with isotope-labeling. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 237:858-867. [PMID: 29150254 DOI: 10.1016/j.envpol.2017.11.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/13/2017] [Accepted: 11/09/2017] [Indexed: 06/07/2023]
Abstract
Contamination of food-crops with polycyclic aromatic hydrocarbons (PAHs) poses a grave concern to food safety, especially when PAHs are internalized. We have demonstrated in our previous study that inoculation of crop with a phenanthrene-degrading endophytic Pseudomonas sp. Ph6-gfp could overcome this problem. Here, the subcellular distribution and biotransformation mechanism of phenanthrene in pakchoi (Brassica chinensis L.) seedlings with inoculation of Ph6-gfp were further investigated both in vitro and in vivo. The possible biotransformation products of phenanthrene were identified by high-resolution mass spectrometry (HRMS) coupled with 13C2-phenanthrene labeling. Results indicated that Ph6-gfp colonized pakchoi interior and reduced the content of phenanthrene in different cell compartments. Notably, the inoculation hindered the subcellular distribution of phenanthrene from intercellular space to subcellular fractions (i.e., cell wall, cell membrane, cell solution, and cell organelles), likely resulting from the interception and biodegradation of phenanthrene by the bacterium between the cell wall and intercellular space. Additionally, the conjugation reactions of phenanthrene-metabolites and endogenous plant compounds were enhanced as a result of the inoculation. We propose that endophytic degradation, plant metabolism, and conjugation reaction are the three possible biotransformation mechanisms that could account for the changes in phenanthrene inside the plant cell compartments. This is the first observation of endophytic bacteria (EB)-enhanced biotransformation and conjugation of phenanthrene in pakchoi at the subcellular level, which drive novel insights in regulating food-crop contamination with endophytes in PAH-contaminated matrices.
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Affiliation(s)
- Kai Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China; Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Mussie Y Habteselassie
- Department of Crop and Soil Sciences, University of Georgia Griffin Campus, 1109 Experiment Street, Griffin, GA 30223, United States
| | - Juan Liu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Shunyao Li
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanzheng Gao
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Košnář Z, Mercl F, Tlustoš P. Ability of natural attenuation and phytoremediation using maize (Zea mays L.) to decrease soil contents of polycyclic aromatic hydrocarbons (PAHs) derived from biomass fly ash in comparison with PAHs-spiked soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 153:16-22. [PMID: 29407733 DOI: 10.1016/j.ecoenv.2018.01.049] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 06/07/2023]
Abstract
A 120-day pot experiment was conducted to compare the ability of natural attenuation and phytoremediation approaches to remove polycyclic aromatic hydrocarbons (PAHs) from soil amended with PAHs-contaminated biomass fly ash. The PAH removal from ash-treated soil was compared with PAHs-spiked soil. The removal of 16 individual PAHs from soil ranged between 4.8% and 87.8% within the experiment. The natural attenuation approach led to a negligible total PAH removal. The phytoremediation was the most efficient approach for PAH removal, while the highest removal was observed in the case of ash-treated soil. The content of low molecular weight (LMW) PAHs and the total PAHs in this treatment significantly decreased (P <.05) over the whole experiment by 47.6% and 29.4%, respectively. The tested level of PAH soil contamination (~1600 µg PAH/kg soil dry weight) had no adverse effects on maize growth as well on the biomass yield. In addition, the PAHs were detected only in maize roots and their bioaccumulation factors were significantly lower than 1 suggesting negligible PAH uptake from soil by maize roots. The results showed that PAHs of ash origin were similarly susceptible to removal as spiked PAHs. The presence of maize significantly boosted the PAH removal from soil and its aboveground biomass did not represent any environmental risk.
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Affiliation(s)
- Zdeněk Košnář
- Department of Agro Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague 6 - Suchdol, Czech Republic.
| | - Filip Mercl
- Department of Agro Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague 6 - Suchdol, Czech Republic
| | - Pavel Tlustoš
- Department of Agro Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague 6 - Suchdol, Czech Republic
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Xu XJ, Lai GL, Chi CQ, Zhao JY, Yan YC, Nie Y, Wu XL. Purification of eutrophic water containing chlorpyrifos by aquatic plants and its effects on planktonic bacteria. CHEMOSPHERE 2018; 193:178-188. [PMID: 29131976 DOI: 10.1016/j.chemosphere.2017.10.171] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/16/2017] [Accepted: 10/30/2017] [Indexed: 05/18/2023]
Abstract
In this study, the removal of nutrients and chlorpyrifos as well as shifts of planktonic bacterial communities in constructed microcosms were investigated to evaluate the influence of Phragmites australis, Nymphaea alba, and Myriophyllum verticillatum, and their combination, on the restoration of eutrophic water containing chlorpyrifos. Plant-treated groups showed a higher pollutant removal rate than did no-remediation controls, indicating that treatment with plants is effective at remediation of eutrophic water containing chlorpyrifos. Different plants showed different performance on the remediation of eutrophic water, e.g., P. australis manifested stronger capacity for removal of sediment chlorpyrifos. This finding indicated that an appropriate plant combination is needed to deal with complex wastewater. During the treatments, the planktonic bacterial communities were influenced by the concentrations of nutrients and pollutants. The changes of composition of bacterial communities indicated a strong correlation between the bacterial communities and the concentrations of pollutants. The plants also influenced the planktonic bacterial communities, especially at the early phase of treatments. For example, P. australis increased the abundance of Limnohabitans and Nevskia significantly and decreased the abundance of Devosia, Luteolibacter, Methylibium, and Caulobacter significantly. The abundance of Hydrocarboniphaga significantly increased in N. alba-treated microcosms, whereas in M. verticillatum-treated microcosms, the abundance of Limnohabitans and Bdellovibrio significantly increased. Our results suggest that the planktonic bacterial communities may be altered during phytoremediation, and the functions of the affected bacteria should be concerned.
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Affiliation(s)
- Xing-Jian Xu
- College of Engineering, Peking University, Beijing, 100871, PR China; Shenzhen Techand Ecology & Environment Co., Ltd., Shenzhen, 518040, PR China.
| | - Guo-Li Lai
- College of Engineering, Peking University, Beijing, 100871, PR China.
| | - Chang-Qiao Chi
- College of Engineering, Peking University, Beijing, 100871, PR China.
| | - Jie-Yu Zhao
- College of Engineering, Peking University, Beijing, 100871, PR China.
| | - Ying-Chun Yan
- College of Engineering, Peking University, Beijing, 100871, PR China; Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610207, PR China.
| | - Yong Nie
- College of Engineering, Peking University, Beijing, 100871, PR China.
| | - Xiao-Lei Wu
- College of Engineering, Peking University, Beijing, 100871, PR China.
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James A, Singh DK, Khankhane PJ. Enhanced atrazine removal by hydrophyte-bacterium associations and in vitro screening of the isolates for their plant growth-promoting potential. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:89-97. [PMID: 28598215 DOI: 10.1080/15226514.2017.1337068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Emergent hydrophytes Acorus calamus, Typha latifolia, and Phragmites karka and epiphytic root bacteria isolated from their rhizoplanes were exposed to atrazine (5 and 10 mg l-1) individually and in plant-bacterium combination for 15 days hydroponically. It was observed that A. calamus-Pseudomonas sp. strain, the ACB combination, was best in decontamination, showing 91% and 87% removal of 5 and 10 mg l-1 atrazine. Plant-bacterium association led to significant increase in atrazine decontamination as compared to decontamination by either plant or bacterium alone, indicating a synergistic action of the hydrophytes and isolates which led to enhanced atrazine removal. To the best of our knowledge this is the first report on the potential of plant-bacterium combinations for atrazine decontamination. The isolates showed augmented growth in the presence of plants and were able to alleviate atrazine stress in them. These isolates exhibited plant growth-promoting traits such as auxin, siderophore, Poly(3-hydroxybutyric acid)/succinogycan, ammonia, catalase production and solubilization of inorganic phosphate in vitro. The use of plant-bacterium mutualistic symbiosis for atrazine mitigation is a relatively simple, inexpensive, and clean technique and this phytoremediation-rhizoremediation combination is suggested to be tried on field to establish their potential for clean-up of contaminated sites.
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Affiliation(s)
- Anina James
- a Department of Zoology , University of Delhi , Delhi , India
| | - D K Singh
- a Department of Zoology , University of Delhi , Delhi , India
| | - P J Khankhane
- b Directorate of Weed Research , Jabalpur , Madhya Pradesh , India
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Sauvêtre A, May R, Harpaintner R, Poschenrieder C, Schröder P. Metabolism of carbamazepine in plant roots and endophytic rhizobacteria isolated from Phragmites australis. JOURNAL OF HAZARDOUS MATERIALS 2018; 342:85-95. [PMID: 28823920 DOI: 10.1016/j.jhazmat.2017.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/20/2017] [Accepted: 08/02/2017] [Indexed: 05/18/2023]
Abstract
Carbamazepine (CBZ) is a pharmaceutical frequently categorized as a recalcitrant pollutant in the aquatic environment. Endophytic bacteria previously isolated from reed plants have shown the ability to promote growth of their host and to contribute to CBZ metabolism. In this work, a horseradish (Armoracia rusticana) hairy root (HR) culture has been used as a plant model to study the interactions between roots and endophytic bacteria in response to CBZ exposure. HRs could remove up to 5% of the initial CBZ concentration when they were grown in spiked Murashige and Skoog (MS) medium. Higher removal rates were observed when HRs were inoculated with the endophytic bacteria Rhizobium radiobacter (21%) and Diaphorobacter nitroreducens (10%). Transformation products resulting from CBZ degradation were identified using liquid chromatography-ultra high-resolution quadrupole time of flight mass spectrometry (LC-UHR-QTOF-MS). CBZ metabolism could be divided in four pathways. Metabolites involving GSH conjugation and 2,3-dihydroxylation, as well as acridine related compounds are described in plants for the first time. This study presents strong evidence that xenobiotic metabolism and degradation pathways in plants can be modulated by the interaction with their endophytic community. Hence it points to plausible applications for the elimination of recalcitrant compounds such as CBZ from wastewater in CWs.
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Affiliation(s)
- Andrés Sauvêtre
- Helmholtz Zentrum München, German Research Centre for Environmental Health, GmbH, Research Unit Comparative Microbiome Analysis, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany; Lab. Fisiología Vegetal, Facultad Biociencias, Universidad Autónoma de Barcelona, 08193, Bellaterra, Spain
| | - Robert May
- Labor Dr. Spranger & Partner, Lindberghstraße 9-13, 85051, Ingolstadt, Germany
| | - Rudolf Harpaintner
- Helmholtz Zentrum München, German Research Centre for Environmental Health, GmbH, Research Unit Comparative Microbiome Analysis, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
| | - Charlotte Poschenrieder
- Lab. Fisiología Vegetal, Facultad Biociencias, Universidad Autónoma de Barcelona, 08193, Bellaterra, Spain
| | - Peter Schröder
- Helmholtz Zentrum München, German Research Centre for Environmental Health, GmbH, Research Unit Comparative Microbiome Analysis, Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany.
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García-Sánchez M, Košnář Z, Mercl F, Aranda E, Tlustoš P. A comparative study to evaluate natural attenuation, mycoaugmentation, phytoremediation, and microbial-assisted phytoremediation strategies for the bioremediation of an aged PAH-polluted soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:165-174. [PMID: 28843188 DOI: 10.1016/j.ecoenv.2017.08.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 06/07/2023]
Abstract
Biological treatments are considered an environmentally option to clean-up polluted soil with polycyclic aromatic hydrocarbons (PAHs). A pot experiment was conducted to comparatively evaluate four different strategies, including natural attenuation (NA), mycoaugmentation (M) by using Crucibulum leave, phytoremediation (P) using maize plants, and microbial-assisted phytoremediation (MAP) for the bioremediation of an aged PAH-polluted soil at 180 days. The P treatment had higher affinity degrading 2-3 and 4 ring compounds than NA and M treatments, respectively. However, M and P treatments were more efficient in regards to naphthalene, indeno[l,2,3-c,d]pyrene and benzo[g,h,i]perylene degradation respect to NA. However, 4, 5-6 rings undergo a strong decline during the microbe-assisted phytoremediation, being the treatment which determined the highest rates of PAHs degradation. Sixteen PAH compounds, except fluorene and dibenzo[a,h]anthracene, were found in maize roots, whereas the naphthalene, phenanthrene, anthracene, fluoranthene, and pyrene were accumulated in the shoots, in both P and MAP treatments. However, higher PAH content in maize biomass was achieved during the MAP treatment respect to P treatment. The bioconversion and translocation factors were less than 1, indicating that phystabilization/phytodegradation processes occurred rather than phytoextraction. The microbial biomass, activity and ergosterol content were significantly boosted in the MAP treatment respect to the other treatments at 180 days. Ours results demonstrated that maize-C. laeve association was the most profitable technique for the treatment of an aged PAH-polluted soil when compared to other bioremediation approaches.
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Affiliation(s)
- Mercedes García-Sánchez
- Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague 6-Suchdol, Czech Republic.
| | - Zdeněk Košnář
- Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague 6-Suchdol, Czech Republic
| | - Filip Mercl
- Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague 6-Suchdol, Czech Republic
| | - Elisabet Aranda
- Department of Microbiology, Institute for Water Research, University of Granada, Ramón y Cajal 4, E-18071 Granada, Spain
| | - Pavel Tlustoš
- Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague 6-Suchdol, Czech Republic
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Asemoloye MD, Ahmad R, Jonathan SG. Synergistic action of rhizospheric fungi with Megathyrsus maximus root speeds up hydrocarbon degradation kinetics in oil polluted soil. CHEMOSPHERE 2017; 187:1-10. [PMID: 28787637 DOI: 10.1016/j.chemosphere.2017.07.158] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 07/18/2017] [Accepted: 07/29/2017] [Indexed: 06/07/2023]
Abstract
This study was aimed at combining the potentials of plant and some rhizospheric fungal strains in remediation of crude-oil polluted soil. Four new rhizospheric fungi were identified from an aged crude-oil polluted site and used with Megathyrsus maximus (guinea grass) for a 90 day synergistic remediation experiment. Cultures of these strains were first mixed with spent mushroom compost (SMC), the mixture was then applied to a sterilized crude oil polluted soil at concentrations of 10%, 20%, 30% and 40% potted in three replicates. Soil with plant alone (0%1) and soil with fungi-SMC alone (0%2) served as controls. The soil's initial and final pH, nutrient, 16 EPA PAHs and heavy metal contents were determined, degradation rate, half-life and percentage loss of the total polyaromatic hydrocarbon (TPAH) were also calculated. Finally, the remediated soils were further screened for seed germination supporting index. The fungal strains were identified and registered at NCBI as Aspergillus niger asemoA (KY473958.1), Talaromyces purpurogenus asemoF (KY488463.1), Trichoderma harzianum asemoJ (KY488466.1) and Aspergillus flavus asemoM (KY488467.1). We observed for the first time that the synergistic mechanism improved the soil nutrient, reduced the heavy metal concentration and sped up hydrocarbon degradation rate. Using the initial and final concentrations of the TPAH, we recorded highest biodegradation rates (K1) and half-life (t1/2) in 30 and 40% treatments over controls, these treatments also had highest seed germination supporting index. This work suggests that the set-up synergistic remediation could be used to remediate crude oil polluted soil and this could be used in large scale.
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Affiliation(s)
- Michael Dare Asemoloye
- Food and Environmental Mycology/Biotechnology Unit, Department of Botany, University of Ibadan, Ibadan, Nigeria; Department of Environmental Sciences, COMSATS Institute of Information Technology, 22060, Abbottabad, Pakistan.
| | - Rafiq Ahmad
- Department of Environmental Sciences, COMSATS Institute of Information Technology, 22060, Abbottabad, Pakistan
| | - Segun Gbolagade Jonathan
- Food and Environmental Mycology/Biotechnology Unit, Department of Botany, University of Ibadan, Ibadan, Nigeria
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