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Luong TT, Nguyen THT, Nguyen TD, Le VT, Pham THT, Ho TT, Nguyen NL. Degradation of Triazole Fungicides by Plant Growth-Promoting Bacteria from Contaminated Agricultural Soil. J Microbiol Biotechnol 2024; 34:56-64. [PMID: 37940179 PMCID: PMC10840487 DOI: 10.4014/jmb.2308.08037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/09/2023] [Accepted: 10/16/2023] [Indexed: 11/10/2023]
Abstract
The widespread application of triazole fungicides (TFs) in agricultural practices can result in the considerable accumulation of active compound residues in the soil and a subsequent negative impact on the soil microbiota and crop health. In this study, we isolated three TF-degrading bacterial strains from contaminated agricultural soils and identified them as Klebsiella sp., Pseudomonas sp., and Citrobacter sp. based on analysis of morphological characteristics and 16S rRNA gene sequences. The strains used three common TFs, namely hexaconazole, difenoconazole, and propiconazole, as their only sources of carbon and energy for growth in a liquid mineral salt medium, with high concentrations (~ 500 mg/l) of each TF. In addition to the ability to degrade fungicides, the isolates also exhibited plant growth-promoting characteristics, such as nitrogen fixation, indole acetic acid production, phosphate dissolution, and cellulose degradation. The synergistic combination of three bacterial isolates significantly improved plant growth and development with an increased survival rate (57%), and achieved TF degradation ranging from 85.83 to 96.59% at a concentration of approximately 50 mg/kg of each TF within 45 days in the soil-plant system. Based on these findings, the three strains and their microbial consortium show promise for application in biofertilizers, to improve soil health and facilitate optimal plant growth.
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Affiliation(s)
- Thi Tham Luong
- Da Lat Nuclear Research Institute, 01 Nguyen Tu Luc, Da Lat 66106, Lam Dong, Vietnam
| | - Thi Hong Tham Nguyen
- Da Lat Nuclear Research Institute, 01 Nguyen Tu Luc, Da Lat 66106, Lam Dong, Vietnam
| | - Tien Dat Nguyen
- Da Lat Nuclear Research Institute, 01 Nguyen Tu Luc, Da Lat 66106, Lam Dong, Vietnam
| | - Van Toan Le
- Da Lat Nuclear Research Institute, 01 Nguyen Tu Luc, Da Lat 66106, Lam Dong, Vietnam
| | - Thi Hong Trang Pham
- Institute for Global Health Innovations, Duy Tan University, Da Nang 550000, Vietnam
- Biotechnology Department, College of Medicine and Pharmacy, Duy Tan University, Da Nang 550000, Vietnam
| | - Thanh-Tam Ho
- Institute for Global Health Innovations, Duy Tan University, Da Nang 550000, Vietnam
- Biotechnology Department, College of Medicine and Pharmacy, Duy Tan University, Da Nang 550000, Vietnam
| | - Ngoc-Loi Nguyen
- Institute of Oceanology, Polish Academy of Sciences, Powstancow Warszawy 55, Sopot 81-712, Poland
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Sliti A, Singh V, Ibal JC, Jeong M, Shin JH. Impact of propiconazole fungicide on soil microbiome (bacterial and fungal) diversity, functional profile, and associated dehydrogenase activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:8240-8253. [PMID: 38175519 DOI: 10.1007/s11356-023-31643-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 12/17/2023] [Indexed: 01/05/2024]
Abstract
Pesticides, protect crops but can harm the environment and human health when used without caution. This study evaluated the impact of propiconazole, a fungicide that acts on fungal cell membranes, on soil microbiome abundance, diversity, and functional profile, as well as soil dehydrogenase activity (DHA). The study conducted microcosm experiments using soil samples treated with propiconazole and employed next-generation sequencing (MiSeq) and chromatographic approaches (GC-MS/MS) to analyze the shift in microbial communities and propiconazole level, respectively. The results showed that propiconazole significantly altered the distribution of microbial communities, with notable changes in the abundance of various bacterial and fungal taxa. Among soil bacterial communities, the relative abundance of Proteobacteria and Planctomycetota increased, while that of Acidobacteria decreased after propiconazole treatment. In the fungal communities, propiconazole increased the abundance of Ascomycota and Basidiomycota in the treated soil, while that of Mortierellomycota was reduced. Fungicide application further triggered a significant decrease in DHA over time. Analysis of the functional profile of bacterial communities showed that propiconazole significantly affected bacterial cellular and metabolic pathways. The carbon degradation pathway was upregulated, indicating the microbial detoxification of the contaminant in the treated soil. Our findings suggest that propiconazole application has a discernible impact on soil microbial communities, which could have long-term consequences for soil health, quality, and function.
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Affiliation(s)
- Amani Sliti
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Vineet Singh
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jerald Conrad Ibal
- Department of Biological Sciences, Idaho State University, Pocatello, ID, 83209, USA
| | - Minsoo Jeong
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
- NGS Core Facility, Kyungpook National University, Daegu, 41566, Republic of Korea.
- Department of Integrative Biotechnology, Kyungpook National University, Daegu, 41566, Republic of Korea.
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Xing L, Liu Y, Li W, Zou L, Wang Y, Luo R. Simultaneous determination of triazole fungicides in animal-origin food by ultra-high-performance liquid chromatography coupled with tandem mass spectrometry. Food Chem X 2023; 20:100956. [PMID: 38144806 PMCID: PMC10740030 DOI: 10.1016/j.fochx.2023.100956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/18/2023] [Accepted: 10/21/2023] [Indexed: 12/26/2023] Open
Abstract
A method for the simultaneous determination of 21 triazole fungicides in animal-origin foods was established by using UPLC-MS/MS. The dilution solvent, extraction solvent, and QuEChERS purification adsorbent composition, were optimized. The response value of the target compound was the highest and the chromatographic peak shape was optimal under the following conditions: water-acetonitrile as the mobile phase, acetonitrile to extract the target compound, C18 (100 mg) as the adsorbent, and water-acetonitrile as the diluent. Our method was validated under electrospray ionization (ESI) + conditions with six animal-origin foods. The 21 triazole fungicides showed good linear relationships (0.1-20 μg∙L-1, R2 > 0.99). The limits of detection and quantitation ranged from 0.1 to 0.3 μg∙kg-1 and 0.3 to 0.9 μg∙kg-1, respectively. The average recoveries ranged from 72.0% to 114.8% with RSDs < 9.9%. Therefore, our method was suitable for the determination of pesticide residues in commercially available animal-origin samples.
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Affiliation(s)
- Lijie Xing
- Analysis and Testing Center, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi 832000, PR China
| | - Yang Liu
- College of Food Science, Shihezi University, Shihezi 832000, PR China
| | - Wenqi Li
- College of Food Science, Shihezi University, Shihezi 832000, PR China
| | - Liangjun Zou
- Analysis and Testing Center, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi 832000, PR China
| | - Yuan Wang
- Analysis and Testing Center, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi 832000, PR China
- College of Food Science, Shihezi University, Shihezi 832000, PR China
| | - Ruifeng Luo
- Analysis and Testing Center, Xinjiang Academy of Agriculture and Reclamation Science, Shihezi 832000, PR China
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Satapute P, De Britto S, Hadimani S, Abdelrahman M, Alarifi S, Govind SR, Jogaiah S. Bacterial chemotaxis of herbicide atrazine provides an insight into the degradation mechanism through intermediates hydroxyatrazine, N-N-isopropylammelide, and cyanuric acid compounds. ENVIRONMENTAL RESEARCH 2023; 237:117017. [PMID: 37652220 DOI: 10.1016/j.envres.2023.117017] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/20/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
In recent times, the herbicide atrazine (ATZ) has been commonly used before and after the cultivation of crop plants to manage grassy weeds. Despite its effect, the toxic residues of ATZ affect soil fertility and crop yield. Hence, the current study is focused on providing insight into the degradation mechanism of the herbicide atrazine through bacterial chemotaxis involving intermediates responsive to degradation. A bacterium was isolated from ATZ-contaminated soil and identified as Pseudomonas stutzeri based on its morphology, biochemical and molecular characterization. Upon ultra-performance liquid chromatography analysis, the free cells of isolated bacterium strain was found to utilize 174 μg/L of ATZ after 3-days of incubation on a mineral salt medium containing 200 μg/L of ATZ as a sole carbon source. It was observed that immobilized based degradation of ATZ yielded 198 μg/L and 190 μg/L by the cells entrapped with silica beads and sponge, respectively. Furthermore, the liquid chromatography-mass spectroscopy revealed that the secretion of three significant metabolites, namely, cyanuric acid, hydroxyatrazine and N- N-Isopropylammelide is responsive to the biodegradation of ATZ by the bacterium. Collectively, this research demonstrated that bacterium strains are the most potent agent for removing toxic pollutants from the environment, thereby enhancing crop yield and soil fertility with long-term environmental benefits.
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Affiliation(s)
- Praveen Satapute
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, 580003, Karnataka, India
| | - Savitha De Britto
- Division of Biological Sciences, School of Science and Technology, University of Goroka, Goroka, 441, Papua New Guinea
| | - Shiva Hadimani
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, 580003, Karnataka, India
| | | | - Saud Alarifi
- Department of Zoology, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | | | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, 580003, Karnataka, India; Department of Environmental Science, Central University of Kerala, Tejaswini Hills, Periye (PO), 671316, Kasaragod (DT), Kerala, India.
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Ma Q, Li Q, Wang J, Parales RE, Li L, Ruan Z. Exposure to three herbicide mixtures influenced maize root-associated microbial community structure, function and the network complexity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122393. [PMID: 37595734 DOI: 10.1016/j.envpol.2023.122393] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023]
Abstract
Herbicide mixtures are a new and effective agricultural strategy for managing suppress weed resistance and have been widely used in controlling weeding growth in maize fields. However, the potential ecotoxicological impact of these mixtures on the microbial community structure and function within various root-associated niches, remains inadequately understood. Here, the effects of nicosulfuron, mesotrione and atrazine on soil enzyme activity and microbial community structure and function were investigated when applied alone and in combination. The findings indicated that herbicide mixtures exhibit a prolonged half-life compared to single herbicides. Ecological niches are the major factor influencing the structure and functions of the microbial community, with the rhizosphere exhibiting a more intensive response to herbicide stress. Herbicides significantly inhibited the activities of soil functional enzymes, including dehydrogenase, urease and sucrose in the short-term. Single herbicide did not drastically influence the alpha or beta diversity of the soil bacterial community, but herbicide mixtures significantly increased the richness of the fungal community. Meanwhile, the key functional microbial populations, such as Pseudomonas and Enterobacteriaceae, were significantly altered by herbicide stress. Both individual and combined use of the three herbicides reduced the complexity and stability of the bacterial network but increased the interspecific cooperations of fungal community in the rhizosphere. Moreover, by quantification of residual herbicide concentrations in the soil, we showed that the degradation period of the herbicide mixture was longer than that of single herbicides. Herbicide mixtures increased the contents of NO3--N and NH4+-N in the soil in the short-term. Overall, our study provided a comprehensive insight into the response of maize root-associated microbial communities to herbicide mixtures and facilitated the assessment of the ecological risks posed by herbicide mixtures to the agricultural environment from an agricultural sustainability perspective.
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Affiliation(s)
- Qingyun Ma
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, PR China; State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Qingqing Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Jie Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China; College of Life Science, Xinjiang Normal University, Urumqi, 830046, PR China
| | - Rebecca E Parales
- Department of Microbiology and Molecular Genetics, College of Biological Sciences, University of California, Davis, CA, USA
| | - Lin Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, PR China
| | - Zhiyong Ruan
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
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Han L, Xu H, Wang Q, Liu X, Li X, Wang Y, Nie J, Liu M, Ju C, Yang C. Deciphering the degradation characteristics of the fungicides imazalil and penflufen and their effects on soil bacterial community composition, assembly, and functional profiles. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132379. [PMID: 37643571 DOI: 10.1016/j.jhazmat.2023.132379] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023]
Abstract
The adsorption-desorption and degradation characteristics of two widely applied fungicides, imazalil and penflufen, and the responses of soil bacterial diversity, structure, function, and interaction after long-term exposure were systemically studied in eight different soils. The adsorption ability of imazalil in soil was significantly higher than that of penflufen. Both imazalil and penflufen degraded slowly in most soils following the order: imazalil > penflufen, with soil pH, silt, and clay content being the potential major influencing factors. Both imazalil and penflufen obviously inhibited the soil microbial functional diversity, altered the soil bacterial community and decreased its diversity. Although exposure to low and high concentrations of imazalil and penflufen strengthened the interactions among the soil bacterial communities, the functional diversity of the co-occurrence network tended to be simple at high concentrations, especially in penflufen treatment. Both imazalil and penflufen markedly disturbed soil nitrogen cycling, especially penflufen seriously inhibited most nitrogen cycling processes, such as nitrogen fixation and nitrification. Meanwhile, sixteen and ten potential degradative bacteria of imazalil and penflufen, respectively, were found in soils, including Kaistobacter and Lysobacter. Collectively, the long-term application of imazalil and penflufen could cause residual accumulation in soils and subsequently result in serious negative effects on soil ecology.
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Affiliation(s)
- Lingxi Han
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China.
| | - Han Xu
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Qianwen Wang
- Central Laboratory, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiaoli Liu
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Xiaoming Li
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Yiran Wang
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Jiyun Nie
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China.
| | - Mingyu Liu
- College of Horticulture, Qingdao Agricultural University, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China
| | - Chao Ju
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Congjun Yang
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China
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Zhang C, Dai Y, Liu J, Su Y, Zhang Q. Chitosan Enhances Low-Dosage Difenoconazole to Efficiently Control Leaf Spot Disease in Pseudostellaria heterophylla (Miq.) Pax. Molecules 2023; 28:6170. [PMID: 37630422 PMCID: PMC10459367 DOI: 10.3390/molecules28166170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/11/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
Pseudostellaria heterophylla (Miq.) Pax is a popular clinical herb and nutritious health food. However, leaf spot disease caused by fungal pathogens frequently occurs and seriously influences the growth, quality, and yield of P. heterophylla. In this work, the field control roles of difenoconazole, chitosan, and their combination in the leaf spot disease in P. heterophylla and their effects on the disease resistance, photosynthetic capacity, medicinal quality, and root yield of P. heterophylla are investigated. The results manifest that 37% difenoconazole water-dispersible granule (WDG) with 5000-time + chitosan 500-time dilution liquid had a superior control capacity on leaf spot disease with the control effects of 91.17%~88.19% at 15~30 days after the last spraying, which significantly (p < 0.05) exceeded that of 37% difenoconazole WDG 3000-time dilution liquid and was significantly (p < 0.01) higher than that of 37% difenoconazole WDG 5000-time dilution liquid, chitosan 500-time dilution liquid, or chitosan 1000-time dilution liquid. Simultaneously, this combination could more effectively enhance the disease resistance, photosynthetic capacity, medicinal quality, and tuberous root yield of P. heterophylla compared to when these elements were applied alone, as well as effectively reduce difenoconazole application. This study emphasizes that chitosan combined with a low dosage of difenoconazole can be proposed as a green, efficient, and alternative formula for controlling leaf spot disease in P. heterophylla and enhancing its resistance, photosynthesis, quality, and yield.
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Affiliation(s)
- Cheng Zhang
- Guizhou Provincial Engineering Research Center of Ecological Food Innovation, School of Public Health, Guizhou Medical University, Guiyang 550025, China; (C.Z.); (J.L.)
| | - Yi Dai
- Engineering Technology Research Center for Protection and Detection of Germplasm Resources of Karst-Adaptable Crops, Department of Food and Medicine, Guizhou Vocational College of Agriculture, Qingzhen 551400, China;
| | - Jiaqi Liu
- Guizhou Provincial Engineering Research Center of Ecological Food Innovation, School of Public Health, Guizhou Medical University, Guiyang 550025, China; (C.Z.); (J.L.)
| | - Yue Su
- Engineering Technology Research Center for Protection and Detection of Germplasm Resources of Karst-Adaptable Crops, Department of Food and Medicine, Guizhou Vocational College of Agriculture, Qingzhen 551400, China;
| | - Qinghai Zhang
- Guizhou Provincial Engineering Research Center of Ecological Food Innovation, School of Public Health, Guizhou Medical University, Guiyang 550025, China; (C.Z.); (J.L.)
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Singh VK, Kumar A. Secondary metabolites from endophytic fungi: Production, methods of analysis, and diverse pharmaceutical potential. Symbiosis 2023; 90:1-15. [PMID: 37360552 PMCID: PMC10249938 DOI: 10.1007/s13199-023-00925-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 05/22/2023] [Indexed: 06/28/2023]
Abstract
The synthesis of secondary metabolites is a constantly functioning metabolic pathway in all living systems. Secondary metabolites can be broken down into numerous classes, including alkaloids, coumarins, flavonoids, lignans, saponins, terpenes, quinones, xanthones, and others. However, animals lack the routes of synthesis of these compounds, while plants, fungi, and bacteria all synthesize them. The primary function of bioactive metabolites (BM) synthesized from endophytic fungi (EF) is to make the host plants resistant to pathogens. EF is a group of fungal communities that colonize host tissues' intracellular or intercellular spaces. EF serves as a storehouse of the above-mentioned bioactive metabolites, providing beneficial effects to their hosts. BM of EF could be promising candidates for anti-cancer, anti-malarial, anti-tuberculosis, antiviral, anti-inflammatory, etc. because EF is regarded as an unexploited and untapped source of novel BM for effective drug candidates. Due to the emergence of drug resistance, there is an urgent need to search for new bioactive compounds that combat resistance. This article summarizes the production of BM from EF, high throughput methods for analysis, and their pharmaceutical application. The emphasis is on the diversity of metabolic products from EF, yield, method of purification/characterization, and various functions/activities of EF. Discussed information led to the development of new drugs and food additives that were more effective in the treatment of disease. This review shed light on the pharmacological potential of the fungal bioactive metabolites and emphasizes to exploit them in the future for therapeutic purposes.
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Affiliation(s)
- Vivek Kumar Singh
- Department of Biotechnology, National Institute of Technology, Raipur (CG), Raipur, 492010 Chhattisgarh India
| | - Awanish Kumar
- Department of Biotechnology, National Institute of Technology, Raipur (CG), Raipur, 492010 Chhattisgarh India
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Pagliarini E, Gaggìa F, Quartieri M, Toselli M, Di Gioia D. Yield and Nutraceutical Value of Lettuce and Basil Improved by a Microbial Inoculum in Greenhouse Experiments. PLANTS (BASEL, SWITZERLAND) 2023; 12:1700. [PMID: 37111923 PMCID: PMC10145599 DOI: 10.3390/plants12081700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/30/2023] [Accepted: 02/13/2023] [Indexed: 06/19/2023]
Abstract
Members of Bacillus spp. have been widely used to enrich the soil/root interface to provide plant growth promoting activities. A new isolate, namely to Bacillus sp. VWC18, has been tested under greenhouse conditions in lettuce (Lactuca sativa L.) pots at different concentrations (103, 105, 107, and 109 CFU·mL-1) and application time (single inoculum at transplant and multiple inoculum every ten days) to evaluate the best application dose and frequency. Analysis of foliar yield, main nutrients, and minerals evidenced a significant response for all applications. The lowest (103 CFU·mL-1) and the highest doses (109 CFU·mL-1), applied every ten days until harvest, had the greatest efficacy; the nutrient yield (N, K, P, Na, Ca, Fe, Mg, Mn, Cu, and B) increased more than twice. A new randomized block design with three replicates was then performed in lettuce and basil (Ocinum basilicum L.), with the two best performing concentrations applied every ten days. In addition to previous analysis, root weight, chlorophyll, and carotenoids were also examined. Both experiments confirmed the previous results: inoculation of the substrate with Bacillus sp. VWC18 promoted plant growth, chlorophyll, and mineral uptake in both crop species. Root weight duplicated or triplicated compared to control plants, and chlorophyll concentration reached even higher values. Both parameters had a dose-dependent increase.
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Fan X, Zhao M, Wen H, Zhang Y, Zhang Y, Zhang J, Liu X. Enhancement degradation efficiency of pyrethroid-degrading esterase (Est816) through rational design and its application in bioremediation. CHEMOSPHERE 2023; 319:138021. [PMID: 36731665 DOI: 10.1016/j.chemosphere.2023.138021] [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: 11/17/2022] [Revised: 01/12/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
The pervasive use of pyrethroids is seriously hazardous to the environment and even human health. Enzymatic bioremediation is potentially a rapid and environmentally friendly technology to combat the pollution of pyrethroid pesticides. The hydrolysis of ester linkages is the initial and critical enzymatic step in microbial degradation pathways. Here, the versatile and thermostable esterase Est816 was cloned and its new function, pyrethroid-hydrolysis activity, was expanded. To further improve its pyrethroid-hydrolysis ability, Est816 was modified by rational design. After two rounds of mutation, the best-performing mutant, Est816A216V/K238N/M97V, was obtained, which could completely degrade 1 mg/L λ-cyhalothrin, cypermethrin, and deltamethrin within 20 min, and efficiently degrade fenvalerate, reaching over 80% conversion. Degradation activity analyses showed that three substitutions (A216V, K238 N and M97V) were beneficial for enhancing the activity of Est816. Enzymatic characterization showed that Est816A216V/K238N/M97V inherited broad substrate specificity and possessed excellent stability and adaptability over wide ranges of temperature and pH, which is essential for bioremediation in frequently changing conditions. Furthermore, Est816A216V/K238N/M97V had the best degradation effect on all four pyrethroid residues in Panax notoginseng root, with more than 87% conversion after 24 h. Pyrethroid residues in tea, cucumber, and soil were reduced by more than 76%, 80%, and 76%, respectively. Taken together, these findings highlight the great potential of Est816A216V/K238N/M97V in the bioremediation of pyrethroid-contaminated soil and agricultural products.
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Affiliation(s)
- Xinjiong Fan
- College & Hospital of Stomatology, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China; School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Meng Zhao
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China; Minhang Branch, Zhongshan Hospital, Fudan University,170 Xinsong Rd, Shanghai 200000, China
| | - Huamei Wen
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Yanyu Zhang
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Yixin Zhang
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, China
| | - Jing Zhang
- College & Hospital of Stomatology, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China.
| | - Xiaolong Liu
- University of Science and Technology of China, Hefei, Anhui 230026, China.
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11
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Song J, Zheng Z, Fang H, Li T, Wu Z, Qiu M, Shen H, Mei J, Xu L. Deposition and dissipation of difenoconazole in pepper and soil and its reduced application to control pepper anthracnose. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114591. [PMID: 36736234 DOI: 10.1016/j.ecoenv.2023.114591] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/27/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
The initial deposition amount, dissipation dynamics, retention rate, and field control efficacy of difenoconazole in pepper-soil system were studied with different application dosages, planting regions and patterns. The initial deposition amount of difenoconazole under the same application dosage showed the following order: fruits < cultivated soils < lower stems < upper stems < lower leaves < upper leaves, open field < greenhouse, and Changjiang < Cixi < Hefei < Langfang, respectively, which increased with increasing application dosage. The dissipation rates in leaves, stems, fruits and cultivated soils exhibited an initially fast and then slow trend, while the retention rates displayed a tendency of first increasing and then stabilizing with increasing application dosages. After 7 d of difenoconazole application, the retention rates at five concentrations were 10.3%- 39.1%, and the field efficacy mostly reached the minimum effective dose. These results suggested that difenoconazole could be reduced by 25% based on the minimum recommended dose meeting the requirements of field control efficacy for controlling pepper anthracnose.
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Affiliation(s)
- Jiajin Song
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhiruo Zheng
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Tongxin Li
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zishan Wu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Mengting Qiu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Hongjian Shen
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jiajia Mei
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Lihui Xu
- Institute of Eco-Environmental Protection, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
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12
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Zhao G, Tian Y, Yu H, Li J, Mao D, Faisal RM, Huang X. Development of solid agents of the diphenyl ether herbicide degrading bacterium Bacillus sp. Za based on a mixed organic fertilizer carrier. Front Microbiol 2022; 13:1075930. [PMID: 36504824 PMCID: PMC9729343 DOI: 10.3389/fmicb.2022.1075930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/07/2022] [Indexed: 11/25/2022] Open
Abstract
The long-term and widespread use of diphenyl ether herbicides has caused serious soil residue problems and threatens the agricultural ecological environment. The development of biodegrading agents using high-efficiency degrading strains as pesticide residue remediation materials has been widely recognized. In this study, the strain Bacillus sp. Za was used to prepare solid agents for the remediation of diphenyl ether herbicides-contaminated soil. The ratio of organic fertilizer was 1:3 (pig manure: cow dung), the inoculum amount of Za was 10%, the application amount of solid agents was 7%, and the application mode was mixed application, all of which were the most suitable conditions for solid agents. After the solid agents were stored for 120 days, the amount of Za remained above 108 CFU/g. The degradation rates of the solid agents for lactofen, bifenox, fluoroglycofen, and fomesafen in soil reached 87.40, 82.40, 78.20, and 65.20%, respectively, on the 7th day. The application of solid agents alleviated the toxic effect of lactofen residues on maize seedlings. A confocal laser scanning microscope (CLSM) was used to observe the colonization of Za-gfp on the surface of maize roots treated in the solid agents, and Za-gfp mainly colonized the elongation zone and the mature area of maize root tips, and the colonization time exceeded 21 days. High-throughput sequencing analysis of soil community structural changes in CK, J (solid agents), Y (lactofen), and JY (solid agents + lactofen) groups showed that the addition of solid agents could restore the bacterial community structure in the rhizosphere soil of maize seedlings. The development of solid agents can facilitate the remediation of soil contaminated with diphenyl ether herbicide residues and improve the technical level of the microbial degradation of pesticide residues.
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Affiliation(s)
- Guoqiang Zhao
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yanning Tian
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Houyu Yu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jintao Li
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Dongmei Mao
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Rayan Mazin Faisal
- Department of Biology, College of Science, University of Mosul, Mosul, Iraq
| | - Xing Huang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China,*Correspondence: Xing Huang,
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13
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Shahid M, Khan MS. Ecotoxicological implications of residual pesticides to beneficial soil bacteria: A review. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 188:105272. [PMID: 36464377 DOI: 10.1016/j.pestbp.2022.105272] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/02/2022] [Accepted: 10/23/2022] [Indexed: 06/17/2023]
Abstract
Optimization of crop production in recent times has become essential to fulfil food demands of constantly increasing human populations worldwide. To address this formidable challenge, application of agro-chemicals including synthetic pesticides in intensive farm practices has increased alarmingly. The excessive and indiscriminate application of pesticides to foster food production however, leads to its exorbitant deposition in soils. After accumulation in soils beyond threshold limits, pesticides harmfully affect the abundance, diversity and composition and functions of rhizosphere microbiome. Also, the cost of pesticides and emergence of resistance among insect-pests against pesticides are other reasons that require attention. Due to this, loss in soil nutrient pool cause a substantive reduction in agricultural production which warrant the search for newer environmentally friendly technology for sustainable crop production. Rhizosphere microbes, in this context, play vital roles in detoxifying the polluted environment making soil amenable for cultivation through detoxification of pollutants, rhizoremediation, bioremediation, pesticide degradation, and stress alleviation, leading to yield optimization. The response of soil microorganisms to range of chemical pesticides is variable ranging from unfavourable to the death of beneficial microbes. At cellular and biochemical levels, pesticides destruct the morphology, ultrastructure, viability/cellular permeability, and many biochemical reactions including protein profiles of soil bacteria. Several classes of pesticides also disturb the molecular interaction between crops and their symbionts impeding the overall useful biological processes. The harmful impact of pesticides on soil microbes, however, is poorly researched. In this review, the recent findings related with potential effects of synthetic pesticides on a range of soil microbiota is highlighted. Emphasis is given to find and suggest strategies to minimize the chemical pesticides usage in the real field conditions to preserve the viability of soil beneficial bacteria and soil quality for safe and sustainable crop production even in pesticide contaminated soils.
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Affiliation(s)
- Mohammad Shahid
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India.
| | - Mohammad Saghir Khan
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
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14
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Han L, Xu M, Kong X, Liu X, Wang Q, Chen G, Xu K, Nie J. Deciphering the diversity, composition, function, and network complexity of the soil microbial community after repeated exposure to a fungicide boscalid. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 312:120060. [PMID: 36058318 DOI: 10.1016/j.envpol.2022.120060] [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: 05/06/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Boscalid is a novel, highly effective carboximide fungicide that has been substantially and irrationally applied in greenhouses. However, little is known about the residual characteristics of boscalid and its ecological effects in long-term polluted greenhouse soils. Therefore, actual boscalid pollution status in greenhouse soils was simulated by repeatedly introducing boscalid into the soil under laboratory conditions. The degradation characteristics of boscalid, and its effects on the diversity, composition, function, and co-occurrence patterns of the soil microbial community were systematically investigated. Boscalid degraded slowly, with its degradation half-lives ranging from 31.5 days to 180.1 days in the soil. Boscalid degradation was further delayed by repeated treatment and increasing its initial concentration. Boscalid significantly decreased soil microbial diversity, particularly at the recommended dosage. Amplicon sequencing analysis showed that boscalid altered the soil microbial community and further stimulated the phylum Proteobacteria and four potential boscalid-degrading bacterial genera, Sphingomonas, Starkeya, Citrobacter, and Castellaniella. Although the network analysis revealed that boscalid significantly reduced the microbial network complexity, it enhanced the vital roles of Proteobacteria by increasing its proportion and strengthening the relationships among the internal bacteria in the network. The soil microbial function in the boscalid treatment were simulated at the recommended dosage and two-fold recommended dosage but showed an inhibition-recovery-stimulation trend at the five-fold recommended dosage with an increase in treatment frequency. Moreover, the expression of nitrogen cycling functional genes, nifH, AOA amoA, AOB amoA, nirK, and nirS in all boscalid treatments displayed an inhibition-recovery-stimulation trend during the entire experimental period, and the effects were more pronounced at the five-fold recommended dosage. In conclusion, repeated boscalid treatments delayed degradation, reduced soil microbial diversity and network complexity, disturbed soil microbial community, and interfered with soil microbial function.
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Affiliation(s)
- Lingxi Han
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Min Xu
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Xiabing Kong
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Xiaoli Liu
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China
| | - Qianwen Wang
- Central Laboratory, Qingdao Agricultural University, Qingdao, 266109, China
| | - Guilan Chen
- Central Laboratory, Qingdao Agricultural University, Qingdao, 266109, China
| | - Kun Xu
- Central Laboratory, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jiyun Nie
- College of Horticulture, Qingdao Agricultural University/Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs/National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao)/Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao, 266109, China.
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15
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Assessment of the Effects of Triticonazole on Soil and Human Health. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196554. [PMID: 36235091 PMCID: PMC9572687 DOI: 10.3390/molecules27196554] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/19/2022] [Accepted: 09/26/2022] [Indexed: 11/28/2022]
Abstract
Triticonazole is a fungicide used to control diseases in numerous plants. The commercial product is a racemate containing (R)- and (S)-triticonazole and its residues have been found in vegetables, fruits, and drinking water. This study considered the effects of triticonazole on soil microorganisms and enzymes and human health by taking into account the enantiomeric structure when applicable. An experimental method was applied for assessing the effects of triticonazole on soil microorganisms and enzymes, and the effects of the stereoisomers on soil enzymes and human health were assessed using a computational approach. There were decreases in dehydrogenase and phosphatase activities and an increase in urease activity when barley and wheat seeds treated with various doses of triticonazole were sown in chernozem soil. At least 21 days were necessary for the enzymes to recover the activities. This was consistent with the diminution of the total number of soil microorganisms in the 14 days after sowing. Both stereoisomers were able to bind to human plasma proteins and were potentially inhibitors of human cytochromes, revealing cardiotoxicity and low endocrine disruption potential. As distinct effects, (R)-TTZ caused skin sensitization, carcinogenicity, and respiratory toxicity. There were no significant differences in the interaction energies of the stereoisomers and soil enzymes, but (S)-TTZ exposed higher interaction energies with plasma proteins and human cytochromes.
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16
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Akter R, Mukhles MB, Rahman MM, Rana MR, Huda N, Ferdous J, Rahman F, Rafi MH, Biswas SK. Effect of pesticides on nitrification activity and its interaction with chemical fertilizer and manure in long-term paddy soils. CHEMOSPHERE 2022; 304:135379. [PMID: 35716712 DOI: 10.1016/j.chemosphere.2022.135379] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/12/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Effect of pesticides on nitrification activity and its interaction among heavy metal concentrations (HMCs), antibiotic resistance genes (ARGs), and ammonia monooxygenase (amoA) genes of long-term paddy soils is little known. The aim was to study the effect of pesticides on net nitrification rate (NR), potential nitrification rate (NP), HMCs, ARGs (sulI, sulII, tetO, and tetQ), and amoA (amoA-AOA, amoA-AOB, and amoA-NOB) genes in long-term treated paddy soils. NR and NP were significantly decreased (p < 0.05), whereas HMCs (Pb2+, Cu2+, Zn2+, and Fe3+) were a significantly increased (p < 0.05) in chemical fertilizer with pesticide treated paddy soils as compared with chemical fertilizer treated paddy soils. The scatter plot matrix indicated that total carbon (TC), soil organic carbon (SOC), total nitrogen (TN), and Fe were linearly correlated with NR and NP in long-term treated paddy soils. ARGs and amoA genes were significantly decreased (p < 0.05) in chemical fertilizer and manure with pesticide treated paddy soils. Overall, the result indicated the response of pesticide and their combination of manure with pesticide interaction present in long-term paddy soils, which will play a great role in the control uses of pesticides, manure, and chemical fertilizers in paddy soils and protect the nitrogen cycle as well as environment.
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Affiliation(s)
- Rehena Akter
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Muntaha Binte Mukhles
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - M Mizanur Rahman
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh.
| | - Md Rasel Rana
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Nazmul Huda
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Jannatul Ferdous
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Fahida Rahman
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Meherab Hossain Rafi
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
| | - Sudhangshu Kumar Biswas
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Science, Islamic University, Kushtia, 7003, Bangladesh
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17
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Chitosan and chitosan-derived nanoparticles modulate enhanced immune response in tomato against bacterial wilt disease. Int J Biol Macromol 2022; 220:223-237. [PMID: 35970370 DOI: 10.1016/j.ijbiomac.2022.08.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/06/2022] [Accepted: 08/08/2022] [Indexed: 11/20/2022]
Abstract
The present study evaluated the priming efficacy of chitosan and chitosan-derived nanoparticles (CNPs) against bacterial wilt of tomato. In the current study, seed-treated CNPs plus pathogen-inoculated tomato seedlings recorded significant protection of 62 % against pathogen-induced wilt disease and subsequently better growth. The induced resistance was witnessed by a prominent increase in lignin, callose and H2O2 deposition, followed by superoxide radical accumulation in leaves. Additionally, chitosan and CNPs-treated tomato plants recorded a remarkable increase in the upregulation of phenylalanine ammonia-lyase (PAL), peroxidase (POX), polyphenol oxidase (PPO), catalase (CAT) and β-1, 3 glucanase (GLU) in comparison with untreated plants. The chitosan and CNPs-induced antioxidant enzymes were positively correlated with the stimulation of corresponding gene expression in CNPs treated plants related to pathogen-inoculated ones. The results of this study describe that how the application of chitosan and CNPs elicit defense responses at the cellular, biochemical and gene expression in tomato plants against bacterial wilt disease, thereby improve growth and yield.
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18
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Xue P, Liu X, Zhao L, Zhang J, He Z. Integrating high-throughput sequencing and metabolomics to investigate the stereoselective responses of soil microorganisms to chiral fungicide cis-epoxiconazole. CHEMOSPHERE 2022; 300:134198. [PMID: 35248591 DOI: 10.1016/j.chemosphere.2022.134198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/13/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
The use of the chiral triazole fungicide cis-epoxiconazole in agricultural production continues to increase; however, little is known about the stereoselective and toxic responses of soil microorganisms to cis-epoxiconazole in the soil microenvironment. High-throughput sequencing and metabolomics were integrated to investigate the stereoselective response of soil microbial community structure, metabolic profile to cis-epoxiconazole exposure, and the correlation between the microbiomes and different metabolites. Soil microbial community structure and soil metabolic profile were significantly altered and exhibited significant enantioselectivity. The alpha diversity (Chao, Shannon, and Simpson diversity) of bacterial and fungus was not significantly affected, whereas the beta diversity (Bray-Curtis dissimilarity and PLS-DA) of bacterial and fungus was significantly altered in treatment of cis-epoxiconazole and its enantiomers (p-value < 0.05). The variation in bacterial and fungus community structure was the highest under (+)-enantiomer exposure, followed by exposure to racemate and (-)-enantiomer. Soil metabolomic analysis revealed that exposure to high or low doses of cis-epoxiconazole and its enantiomers resulted in different degrees of reprogramming of the soil metabolic pool. The 39 significantly changed metabolites mainly included small molecular organic acids, amino acids and their intermediates, and purine and adenosine intermediates. Six metabolic pathways were significantly disrupted. Different correlation patterns were observed between the significantly altered metabolites and microbes (p-value < 0.05) by Pearson correlation-based analysis. In conclusion, as xenobiotic pollutant, epoxiconazole altered the structure and metabolism of soil microorganisms with significant stereoselectivity mainly driven by 2R, 3S-(+)-cis-epoxiconazole. This study provided a more robust assessment of the risks of epoxiconazole exposure to soil microorganisms. Given the importance of the soil environment in agricultural production, characterization of the soil microbiome and metabolome can provide new insights into the ecological risks posed by exposure to the chiral triazole pesticide cis-epoxiconazole and its enantiomers.
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Affiliation(s)
- Pengfei Xue
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Xiaowei Liu
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Liuqing Zhao
- SCIEX, Analytical Instrument Trading Co., Ltd., Beijing, 100015, China
| | - Jingran Zhang
- SCIEX, Analytical Instrument Trading Co., Ltd., Beijing, 100015, China
| | - Zeying He
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Ministry of Agriculture and Rural Affairs, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China.
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19
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Lin Y, Xie J, Xiang Q, Liu Y, Wang P, Wu Y, Zhou Y. Effect of propiconazole on plastic film microplastic degradation: Focusing on the change in microplastic morphology and heavy metal distribution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153609. [PMID: 35121034 DOI: 10.1016/j.scitotenv.2022.153609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 01/03/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
With the rapid increase in the use of plastic films, microplastic (MP) pollution in agricultural soils has become a global environmental problem. Propiconazole is widely used in agriculture and horticulture; however, its role in plastic film degradation remains elusive. Butylene adipate-co-terephthalate (PBAT) and polyethylene (PE) films were used to analyze the effects of propiconazole on plastic film and MP degradation. We identified the surface morphologies of PBAT and PE at different propiconazole concentrations and soil pH values, as well as the adsorption and release characteristics of heavy metals during the degradation process via scanning electron microscopy, Fourier transform infrared spectroscopy and inductively coupled plasma mass spectrometry. Propiconazole accelerated the degradation of MPs, adsorption of heavy metals (Ni and Zn), and release of Sn at low concentrations (≤40 mg/kg); however, these effects were evidently absent at a high concentration (120 mg/kg). Furthermore, MPs were more prone to degradation in acidic or alkaline soils than in neutral soil when they coexisted with propiconazole. Hence, we suggest that PBAT and PE plastic films may not be suitable for application in acidic and alkaline soils with propiconazole, because of shorter rupture time and more heavy metal adsorption. PBAT degraded faster, absorbed and released more heavy metals than PE. Under all tested conditions, the heavy metal contents in MPs gradually approached those in soil, which proves that MPs are carriers of heavy metal pollutants. These results may help in assessing the impact of MPs on soil environments and provide a theoretical basis for the standardized propiconazole and plastic film usage.
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Affiliation(s)
- Yimiao Lin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jiafei Xie
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qingqing Xiang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yi Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Pingya Wang
- Zhoushan Institute for Food and Drug Control, Zhoushan 316012, China
| | - Yichun Wu
- Zhoushan Institute for Food and Drug Control, Zhoushan 316012, China
| | - Ying Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Environmental Microplastic Pollution Research Center, Zhejiang University of Technology, Hangzhou 310014, China.
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20
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Zhang M, Zhou Z, Zhang J, Yu Y, Sun L, Lu T, Qian H. Metagenomic ecotoxicity assessment of trace difenoconazole on freshwater microbial community. CHEMOSPHERE 2022; 294:133742. [PMID: 35090847 DOI: 10.1016/j.chemosphere.2022.133742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Difenoconazole, a typical triazole fungicide, inhibits the activity of cytochrome P450 enzyme in fungi, and is extensively used in protecting fruits, vegetables, and cereal crops. However, reports elucidating the effects of difenoconazole on aquatic microbial communities are limited. Our study showed that difenoconazole promoted microalgae growth at concentrations ranging from 0.1 to 5 μg/L, which was similar with its environmental residual concentrations. Metagenomic analysis revealed that the aquatic microbial structure could self-regulate to cope with difenoconazole-induced stress by accumulating bacteria exhibiting pollutant degrading abilities. In the short-term, several functional pathways related to xenobiotic biodegradation and analysis were upregulated to provide ability for aquatic microbial community to process xenobiotic stress. Moreover, most disturbed ecological functions were recovered due to the redundancy of microbial communities after prolonged exposure. Furthermore, the risks associated with the dissemination of antibiotic resistance genes were enhanced by difenoconazole in the short-term. Overall, our study contributes to a comprehensive understanding of the difenoconazole-induced ecological impacts and the behavior of aquatic microbial communities that are coping with xenobiotic stress.
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Affiliation(s)
- Mengwei Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China; Department of Jianhu, Zhejiang Industry Polytechnic College, Shaoxing, 312000, PR China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Jinfeng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yitian Yu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China.
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21
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Bhavya G, Hiremath KY, Jogaiah S, Geetha N. Heavy metal-induced oxidative stress and alteration in secretory proteins in yeast isolates. Arch Microbiol 2022; 204:172. [PMID: 35165751 DOI: 10.1007/s00203-022-02756-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 11/29/2022]
Abstract
In the recent years, yeasts have evolved as potent bioremediative candidates for the detoxification of xenobiotic compounds found in the natural environment. Candida sp. are well-studied apart from Saccharomyces sp. in heavy metal detoxification mechanisms. In the current study, Candida parapsilosis strain ODBG2, Candida sp. strain BANG3, and Candida viswanathii strain ODBG4 were isolated from industrial effluents and contaminated ground water, and were studied for their metal tolerance. Among these three isolates, the metal tolerance was found to be more towards Lead (Pb 2 mM), followed by Cadmium (Cd 1.5 mM) and Chromium [Cr(VI), 1 mM]. On further exploring the involvement of primary defensive enzymes in these isolates towards metal tolerance, the anti-oxidative enzyme superoxide dismutase was found to be prominently high (25% with respect to the control) during first 24 h of metal-isolate interaction. The Catalase enzyme assay was observed to have increased enzyme activity at 48 h. It also triggered the activity of peroxidases, which lead to the increase in reduced glutathione in the organism by 0.87-1.9-fold as a metal chelator and also as a second-line defensive molecule. The exoproteome profile showed the early involvement (exponential growth phase) of secreted proteins (low-molecular-weight) of about ~ 40-45 kDa under Cd and Pb stress (0.5 mM). The exoproteome profiling under heavy metal stress in Candida parapsilosis strain ODBG2 and Candida viswanathii strain ODBG4 is the first report.
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Affiliation(s)
- Gurulingaiah Bhavya
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570006, India
| | - Kavita Y Hiremath
- Laboratory of Plant Healthcare and Diagnostics, PG Department of Biotechnology and Microbiology, Karnatak University, Dharward, Karnataka, 580003, India
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, PG Department of Biotechnology and Microbiology, Karnatak University, Dharward, Karnataka, 580003, India.
| | - Nagaraja Geetha
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570006, India.
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22
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White LED Light-Mediated Eosin Y-Photocatalyzed One-Pot Synthesis of Novel 1,2,4-Triazol-3-Amines By Sequential Addition. Top Catal 2022. [DOI: 10.1007/s11244-022-01590-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Satapute P, Jogaiah S. A biogenic microbial biosurfactin that degrades difenoconazole fungicide with potential antimicrobial and oil displacement properties. CHEMOSPHERE 2022; 286:131694. [PMID: 34346344 DOI: 10.1016/j.chemosphere.2021.131694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/15/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
Surfactin is a bacterial lipopeptide and an influential biosurfactant mainly known for excellent surfactant ability. The amphiphilic nature of surfactin helps it to sustain under hydrophobic and hydrophilic conditions. In this investigation, a bacterium strain (BTKU3) that produces biosurfactant were isolated from oil-contaminated soil. Based on the blue agar plate (Bap) assay, the BTKU3 strain was found to be promising for biosurfactant production. This strain was later identified as a Lysinibacillus sp. by 16S rRNA sequencing. The characteristics of extracted bacterial surfactin were evidenced by FTIR with the presence of amine, C-H, CO, CC, esters, thiocarbonyl and asymmetric aliphatic C-H stretch molecular structural groups. Further, the extracted bacterial biosurfactant material was subjected to Liquid Chromatography-Mass Spectroscopy (LCMS), and it was identified and confirmed as surfactin with an elution time of 3.1 min and m/z value of 1034. The emulsification and oil displacement tests further proved the surfactin ability with 83% of coconut oil emulsion index and 80 % oil displacement ability with diesel, respectively. Lysinibacillus sp. BTKU3 strain also proved its efficacy in the degradation of difenoconazole by utilizing a capacity of 9.1 μg ml-1. Thus, it is inferred that the Lysinibacillus sp. BTKU3 strain plays a significant role in the production of surfactin, which positively acts as an antimicrobial agent and reduces contaminants in polluted sites.
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Affiliation(s)
- Praveen Satapute
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India.
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24
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Cheng Y, Zhou L, Liang T, Man J, Wang Y, Li Y, Chen H, Zhang T. Deciphering Rhizosphere Microbiome Assembly of Castanea henryi in Plantation and Natural Forest. Microorganisms 2021; 10:microorganisms10010042. [PMID: 35056492 PMCID: PMC8779262 DOI: 10.3390/microorganisms10010042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 11/26/2022] Open
Abstract
Based on the importance and sensitivity of microbial communities to changes in the forest ecosystem, soil microorganisms can be used to indicate the health of the forest system. The metagenome sequencing was used to analyze the changes of microbial communities between natural and plantation Castanea henryi forests for understanding the effect of forest types on soil microbial communities. Our result showed the soil microbial diversity and richness were higher in the natural forests than in the plantation. Proteobacteria, Actinobacteria, and Acidobacteria are the dominant categories in the C. henryi rhizosphere, and Proteobacteria and Actinobacteria were significantly enriched in the natural forest while Acidobacteria was significantly enriched in the plantation. Meanwhile, the functional gene diversity and the abundance of functions in the natural forest were higher than that of the plantation. Furthermore, we found that the microbial network in the natural forests had more complex than in the plantation. We also emphasized the low-abundance taxa may play an important role in the network structure. These results clearly showed that microbial communities, in response to different forest types, provide valuable information to manipulate microbiomes to improve soil conditions of plantation.
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Affiliation(s)
- Yuanyuan Cheng
- Oil Tea Research Center of Fujian Province, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.C.); (L.Z.); (T.L.); (Y.L.)
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lexin Zhou
- Oil Tea Research Center of Fujian Province, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.C.); (L.Z.); (T.L.); (Y.L.)
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
| | - Tian Liang
- Oil Tea Research Center of Fujian Province, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.C.); (L.Z.); (T.L.); (Y.L.)
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
| | - Jiayin Man
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yinghao Wang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yu Li
- Oil Tea Research Center of Fujian Province, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.C.); (L.Z.); (T.L.); (Y.L.)
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
| | - Hui Chen
- Oil Tea Research Center of Fujian Province, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.C.); (L.Z.); (T.L.); (Y.L.)
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
- Correspondence: (H.C.); (T.Z.); Tel.: +86-139-5034-3791 (H.C.); +86-180-0691-1945 (T.Z.)
| | - Taoxiang Zhang
- Oil Tea Research Center of Fujian Province, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Y.C.); (L.Z.); (T.L.); (Y.L.)
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.M.); (Y.W.)
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Correspondence: (H.C.); (T.Z.); Tel.: +86-139-5034-3791 (H.C.); +86-180-0691-1945 (T.Z.)
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25
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Lahlali R, Ibrahim DS, Belabess Z, Kadir Roni MZ, Radouane N, Vicente CS, Menéndez E, Mokrini F, Barka EA, Galvão de Melo e Mota M, Peng G. High-throughput molecular technologies for unraveling the mystery of soil microbial community: challenges and future prospects. Heliyon 2021; 7:e08142. [PMID: 34693062 PMCID: PMC8515249 DOI: 10.1016/j.heliyon.2021.e08142] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 08/08/2021] [Accepted: 10/04/2021] [Indexed: 12/12/2022] Open
Abstract
Soil microbial communities play a crucial role in soil fertility, sustainability, and plant health. However, intensive agriculture with increasing chemical inputs and changing environments have influenced native soil microbial communities. Approaches have been developed to study the structure, diversity, and activity of soil microbes to better understand the biology and plant-microbe interactions in soils. Unfortunately, a good understanding of soil microbial community remains a challenge due to the complexity of community composition, interactions of the soil environment, and limitations of technologies, especially related to the functionality of some taxa rarely detected using conventional techniques. Culture-based methods have been shown unable and sometimes are biased for assessing soil microbial communities. To gain further knowledge, culture-independent methods relying on direct analysis of nucleic acids, proteins, and lipids are worth exploring. In recent years, metagenomics, metaproteomics, metatranscriptomics, and proteogenomics have been increasingly used in studying microbial ecology. In this review, we examined the importance of microbial community to soil quality, the mystery of rhizosphere and plant-microbe interactions, and the biodiversity and multi-trophic interactions that influence the soil structure and functionality. The impact of the cropping system and climate change on the soil microbial community was also explored. Importantly, progresses in molecular biology, especially in the development of high-throughput biotechnological tools, were extensively assessed for potential uses to decipher the diversity and dynamics of soil microbial communities, with the highlighted advantages/limitations.
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Affiliation(s)
- Rachid Lahlali
- Plant Pathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknes, BP S/40, 50001, Meknes, Morocco
| | - Dina S.S. Ibrahim
- Department of Nematodes Diseases and Central Lab of Biotechnology, Plant Pathology Research Institute, Agricultural Research Center (ARC), 12619, Egypt
| | - Zineb Belabess
- Plant Protection Laboratory. Regional Center of Agricultural Research of Oujda, National Institute of Agricultural Research, Avenue Mohamed VI, BP428 60000 Oujda, Morocco
| | - Md Zohurul Kadir Roni
- Tropical Agriculture Research Front, Japan International Research Center for Agricultural Sciences (JIRCAS), 1091-1 Maezato-Kawarabaru, Ishigaki, Okinawa, 907-0002, Japan
| | - Nabil Radouane
- Plant Pathology Unit, Department of Plant Protection, Ecole Nationale d’Agriculture de Meknes, BP S/40, 50001, Meknes, Morocco
- Department of Biology, Laboratory of Functional Ecology and Environmental Engineering, FST-Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Cláudia S.L. Vicente
- MED – Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research (IIFA), Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
- INIAV, I.P. - Instituto Nacional de Investigação Agrária e Veterinária, Quinta do Marquês, 2780-159 Oeiras, Portugal
| | - Esther Menéndez
- INIAV, I.P. - Instituto Nacional de Investigação Agrária e Veterinária, Quinta do Marquês, 2780-159 Oeiras, Portugal
- Department of Microbiology and Genetics / Spanish-Portuguese Institute for Agricultural Research (CIALE). University of Salamanca, 37007, Salamanca, Spain
| | - Fouad Mokrini
- Plant Protection Laboratory, INRA, Centre Régional de la Recherche Agronomique (CRRA), Rabat, Morocco
| | - Essaid Ait Barka
- Unité de Recherche Résistance Induite et Bio-protection des Plantes, EA 4707, USC, INRAe1488, Université de Reims Champagne-Ardenne, France
| | - Manuel Galvão de Melo e Mota
- NemaLab, MED – Mediterranean Institute for Agriculture, Environment and Development & Department of Biology, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
| | - Gary Peng
- Saskatoon Research Development Centre, Agriculture and Agri-Food, Saskatchewan, Canada
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26
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Paidi MK, Satapute P, Haider MS, Udikeri SS, Ramachandra YL, Vo DVN, Govarthanan M, Jogaiah S. Mitigation of organophosphorus insecticides from environment: Residual detoxification by bioweapon catalytic scavengers. ENVIRONMENTAL RESEARCH 2021; 200:111368. [PMID: 34081974 DOI: 10.1016/j.envres.2021.111368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/09/2021] [Accepted: 05/16/2021] [Indexed: 06/12/2023]
Abstract
Organophosphorus insecticides (OPIs) have low persistence and are easily biodegradable in nature. The United States and India are the major countries producing OPIs of about 25% and 17% of the world, respectively. OPIs commonly used for agricultural practices occupy a major share in the global market, which leads to the increasing contamination of OPIs residues in various food chains. To overcome this issue, an enzymatic degradation method has been approved by several environmental toxic, and controlling agencies, including United States Environmental Protection Agency (USEPA). Different catalytic enzymes have been isolated and identified from various microbial sources to neutralize the toxic pesticides and/or insecticides. In this review, we have gathered information on OPIs biotransformation and their residual toxicity in the environment. Particularly, it focuses on OPIs degrading enzymes such as chlorpyrifos hydrolase, diisopropylfluorophosphatase, organophosphate acid anhydrolase, organophosphate hydrolases, and phosphotriesterases like lactonasesspecific activity either P-O link group type or P-S link group of pesticides. To summarize, the catalytic degradation of organophosphorus insecticides is not only profitable but also environmentally friendly. Hence, the enzymatic catalyst is an ultimate and super bio-weapon to mitigate or decontaminate various OPIs residues in both terrestrial and aqueous environments.
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Affiliation(s)
- Murali Krishna Paidi
- AcSIR, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Gijubhai Badheka Marg, Bhavnagar, Gujarat, 364002, India
| | - Praveen Satapute
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Muhammad Salman Haider
- Key Laboratory of Genetics and Fruit Development, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Shashikant Shiddappa Udikeri
- Agricultural Research Station, Dharwad Farm, University of Agricultural Sciences, Dharwad, 580005, Karnataka, India
| | | | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea.
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India.
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27
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Bhavya G, Belorkar SA, Mythili R, Geetha N, Shetty HS, Udikeri SS, Jogaiah S. Remediation of emerging environmental pollutants: A review based on advances in the uses of eco-friendly biofabricated nanomaterials. CHEMOSPHERE 2021; 275:129975. [PMID: 33631403 DOI: 10.1016/j.chemosphere.2021.129975] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/24/2021] [Accepted: 02/09/2021] [Indexed: 05/04/2023]
Abstract
The increased environmental pollutants due to anthropogenic activities are posing an adverse effects and threat on various biotic forms on the planet. Heavy metals and certain organic pollutants by their toxic persistence in the environment are regarded as significant pollutants worldwide. In recent years, pollutants exist in various forms in the environment are difficult to eliminate by traditional technologies due to various drawbacks. This has lead to shifting of research for the development of cost-effective and efficient technologies for the remediation of environmental pollutants. The adaption of adsorption phenomenon from the traditional technologies with the modification of adsorbents at nanoscale is the trended research for mitigating the environmental pollutants with petite environmental concerns. Over the past decade, the hidden potentials of biological sources for the biofabrication of nanomaterials as bequeathed rapid research for remediating the environmental pollution in a sustainable manner. The biofabricated nanomaterials possess an inimitable phenomenon such as photo and enzymatic catalysis, electrostatic interaction, surface active site interactions, etc., contributing for the detoxification of various pollutants. With this background, the current review highlights the emerging biofabricated nano-based adsorbent materials and their underlying mechanisms addressing the environmental remediation of persistent organic pollutants, heavy metal (loid)s, phytopathogens, special attention to the reduction of pathogen-derived toxins and air pollutants. Each category is illustrated with suitable examples, fundamental mechanism, and graphical representations, along with societal applications. Finally, the future and sustainable development of eco-friendly biofabricated nanomaterial-based adsorbents is discussed.
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Affiliation(s)
- Gurulingaiah Bhavya
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570 006, Karnataka, India
| | - Seema Anil Belorkar
- Microbiology and Bioinformatics Department, Bilaspur University, Bilaspur, (C.G), 495 001, India
| | - Raja Mythili
- PG & Research Department of Biotechnology, Mahendra Arts & Science College, Kalippatti, 637501, Tamil Nadu, India
| | - Nagaraja Geetha
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570 006, Karnataka, India
| | - Huntrike Shekar Shetty
- Nanobiotechnology Laboratory, Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysuru, 570 006, Karnataka, India
| | - Shashikant S Udikeri
- Department of Agricultural Entomolgy, University of Agricultural Sciences, Dharwad, 580005, Karnataka, India
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, PG Department of Biotechnology and Microbiology, Karnataka University, Dharwad, 580 003, Karnataka, India.
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28
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Effect of Organic Residues on Pesticide Behavior in Soils: A Review of Laboratory Research. ENVIRONMENTS 2021. [DOI: 10.3390/environments8040032] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The management of large volumes of organic residues generated in different livestock, urban, agricultural and industrial activities is a topic of environmental and social interest. The high organic matter content of these residues means that their application as soil organic amendments in agriculture is considered one of the more sustainable options, as it could solve the problem of the accumulation of uncontrolled wastes while improving soil quality and avoiding its irreversible degradation. However, the behavior of pesticides applied to increase crop yields could be modified in the presence of these amendments in the soil. This review article addresses how the adsorption–desorption, dissipation and leaching of pesticides in soils is affected by different organic residues usually applied as organic amendments. Based on the results reported from laboratory studies, the influence on these processes has been evaluated of multiple factors related to organic residues (e.g., origin, nature, composition, rates, and incubation time of the amended soils), pesticides (e.g., with different use, structure, characteristics, and application method), and soils with different physicochemical properties. Future perspectives on this topic are also included for highlighting the need to extend these laboratory studies to field and modelling scale to better assess and predict pesticide fate in amended soil scenarios.
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Niroumandpassand A, Javadi A, Afshar Mogaddam MR. Solution decomposition of deep eutectic solvents in pH-induced solidification of floating organic droplet homogeneous liquid-liquid microextraction for the extraction of pyrethroid pesticides from milk. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:1747-1756. [PMID: 33861242 DOI: 10.1039/d0ay02340j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, a pH-induced solidification of floating organic droplet homogeneous liquid-liquid microextraction procedure using deep eutectic solvent decomposition was developed for the extraction of five pyrethroid insecticides from milk samples prior to their analysis by using a gas chromatography-flame ionization detector. To reach this goal, the sample was transferred into a glass test tube and its proteins were precipitated with trichloroacetic acid. After centrifugation, the supernatant phase was transferred into another test tube and a few microliters of menthol: p-aminophenol deep eutectic solvent were dissolved in the solution and shaken to obtain a homogeneous solution. Then a few microliters of ammonia solution were added to the solution and the mixture was sonicated to break down the homogeneous solution. By doing so, the deep eutectic solvent was decomposed and menthol was formed throughout the solution as tiny droplets. In the following, the tube was transferred into an ice bath to solidify the extraction solvent on the solution surface. The collected phase was removed and melted at room temperature and an aliquot of it was analyzed by using a determination system. The validation outcomes confirmed that the method provides high extraction recoveries (72-84%) and high enrichment factors (257-299) with acceptable repeatability (relative standard deviations ≤6.4%). Low limits of detection (1.1-2.4 ng mL-1) and quantification (3.6-8.1 ng mL-1) were obtained using this approach. Finally, several milk samples were analyzed and deltamethrin was successfully determined in some samples.
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Zhang H, Song J, Zhang Z, Zhang Q, Chen S, Mei J, Yu Y, Fang H. Exposure to fungicide difenoconazole reduces the soil bacterial community diversity and the co-occurrence network complexity. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124208. [PMID: 33158656 DOI: 10.1016/j.jhazmat.2020.124208] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 06/11/2023]
Abstract
Difenoconazole is a triazole fungicide that is widely used worldwide and has been frequently detected in agricultural soils, but its ecotoxicological effect on soil bacterial community remains unknown. Here, the degradation of difenoconazole and its effect on soil bacterial communities were investigated at three concentrations in five different agricultural soils. Difenoconazole degraded faster in non-sterilized soils than in sterilized soils, suggesting that biodegradation is a major contributor to the dissipation of difenoconazole in soils. Exposure to high concentrations of difenoconazole decreased the soil bacterial community diversity in most soils, and this influence was aggravated with the increasing concentration. The effect of difenoconazole on soil bacterial community diversity was also enhanced with the increasing content of organic matter and total nitrogen in soils. Moreover, difenoconazole exposure also reduced the soil bacterial community network complexity and exhibited a concentration-dependent characteristic. In addition, a core bacterial community (57 operational taxonomic units, OTUs) was identified, and some core OTUs were strongly linked to the degradation of difenoconazole in soils. It is concluded that high concentrations of difenoconazole may have a significant effect on the soil bacterial communities, and co-occurrence networks may improve the ecotoxicological risk assessment of fungicides on soil microbiome.
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Affiliation(s)
- Houpu Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jiajin Song
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zihan Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Qianke Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Shiyu Chen
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jiajia Mei
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, China.
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31
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Song C, Zhang J, Chen X, Hu G, Fan L, Yang G, Li T, Qiu L, Chen J, Fang L. Effects of fenvalerate concentrations and its chiral isomers on bacterial community structure in the sediment environment of aquaculture ponds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:14498-14507. [PMID: 33215281 DOI: 10.1007/s11356-020-11651-w] [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: 05/18/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
To investigate the effect of chiral pesticide fenvalerate (FV) on the micro-ecological environment of aquaculture pond sediment, we used an indoor static experiment to observe the effects of FV added at different concentrations with different chiral isomers on the changes in the sediment bacterial community. The 16S rDNA high-throughput sequencing technique was used to conduct sequencing and analysis of the bacterial community structure as well as changes in aquaculture pond sediments after 4 weeks of cultivation. The results showed that the microbial alpha diversity indices (Sobs and Shannon indices) of the treated groups were significantly lower than those of the control group after 4 weeks (P < 0.05), and the values in the high-concentration group were significantly lower than those of the low-concentration group (P < 0.05). In terms of bacterial group composition, the proportion of abundance of Proteobacteria and Acidobacteria in the treated groups were greater than in the control group after 4 weeks, while the proportion of abundance of Bacteroidetes and Verrucomicrobia were lower. In the high-concentration FV treatment group, the proportion of abundance of Bacteroidetes, Acidobacteria, Chloroflexi, Nitrospinae, unclassified_k_norank, Ignavibacteriae, and Nitrospirae were significantly different from those of the other groups (P < 0.05). Principal coordinate analysis (PCoA) and ANONISIM/Adonis analysis showed that the cis-enantiomer had a stronger effect on the bacterial community as the concentration of FV increased. In addition, the linear discriminant analysis effect size (LEfSe) and linear discriminant analysis (LDA) results revealed differences in the level of enrichment of bacterial groups caused by FV at different concentrations and isomer levels. Collectively, this study showed that FV residue has a pronounced effect on bacterial communities in sediment, which becomes more significant with increasing exposure concentration. The effects of the cis- and trans-enantiomers of FV on the sediment environment are different; the cis-enantiomer has a stronger effect on the bacterial community.
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Affiliation(s)
- Chao Song
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
| | - Jingwei Zhang
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
| | - Xi Chen
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
| | - Gengdong Hu
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
| | - Limin Fan
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
| | - Guang Yang
- Fisheries Engineering Institute, Chinese Academy of Fishery Sciences, Beijing, People's Republic of China
| | - Tian Li
- Fisheries Engineering Institute, Chinese Academy of Fishery Sciences, Beijing, People's Republic of China
| | - Liping Qiu
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
| | - Jiazhang Chen
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China.
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China.
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China.
| | - Longxiang Fang
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, People's Republic of China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi, People's Republic of China
- Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing, People's Republic of China
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Jakl M, Kovač I, Ćavar Zeljković S, Jaklová Dytrtová J. Triazole fungicides in soil affect the yield of fruit, green biomass, and phenolics production of Solanum lycopersicum L. Food Chem 2021; 351:129328. [PMID: 33647697 DOI: 10.1016/j.foodchem.2021.129328] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 02/05/2021] [Accepted: 02/06/2021] [Indexed: 12/14/2022]
Abstract
A part of the fungicides used in foliar treatment penetrates into the soil. This study describes changes in the bioavailability of (essential) elements in soil, fructification, the amount of green biomass and the production of phenolic compounds related solely to the presence of triazoles (penconazole and cyproconazole) in soil, injected as a single compound or their mixture. The triazoles presence has substantially affected the bioavailability of Fe, Cu and Zn in soil. The amount of green biomass has significantly decreased, whereas the chlorophylls a and b have not been affected. As a potential mark of plant stress, the fruits of the treated variants are significantly bigger. The content of phenolics in tomato peel (e.g. quercetin, quercitrin, hesperidin, naringin, and chlorogenic, salicylic and p-coumaric acid) has been quantified. The biggest changes (increase/decrease) have been observed in the contents of p-coumaric and chlorogenic acid, quercetin and quercitrin.
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Affiliation(s)
- Michal Jakl
- Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Department of Agro-Environmental Chemistry and Plant Nutrition, Kamýcká 129, 165 00 Prague - Suchdol, Czech Republic
| | - Ishak Kovač
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 542/2, 166 10 Prague 6, Czech Republic; Charles University, Faculty of Science, Department of Analytical Chemistry, Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Sanja Ćavar Zeljković
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Genetic Resources for Vegetables, Medicinal and Special Plants, Crop Research Institute, Šlechtitelů 892/29, 783 71 Olomouc, Czech Republic; Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Department of Phytochemistry, Šlechtitelů 241/27, 783 71 Olomouc, Czech Republic
| | - Jana Jaklová Dytrtová
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 542/2, 166 10 Prague 6, Czech Republic; Charles University, Faculty of Physical Education and Sport, Department of Physiology and Biochemistry, José Martího 269/31, 162 52 Prague 6, Czech Republic.
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Serra AA, Bittebière AK, Mony C, Slimani K, Pallois F, Renault D, Couée I, Gouesbet G, Sulmon C. Local-scale dynamics of plant-pesticide interactions in a northern Brittany agricultural landscape. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:140772. [PMID: 32711307 DOI: 10.1016/j.scitotenv.2020.140772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/24/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
Soil pollution by anthropogenic chemicals is a major concern for sustainability of crop production and of ecosystem functions mediated by natural plant biodiversity. Understanding the complex effects of soil pollution requires multi-level and multi-scale approaches. Non-target and agri-environmental plant communities of field margins and vegetative filter strips are confronted with agricultural xenobiotics through soil contamination, drift, run-off and leaching events that result from chemical applications. Plant-pesticide dynamics in vegetative filter strips was studied at field scale in the agricultural landscape of a long-term ecological research network in northern Brittany (France). Vegetative filter strips effected significant pesticide abatement between the field and riparian compartments. However, comparison of pesticide usage modalities and soil chemical analysis revealed the extent and complexity of pesticide persistence in fields and vegetative filter strips, and suggested the contribution of multiple sources (yearly carry-over, interannual persistence, landscape-scale contamination). In order to determine the impact of such persistence, plant dynamics was followed in experimentally-designed vegetative filter strips of identical initial composition (Agrostis stolonifera, Anthemis tinctoria/Cota tinctoria, Centaurea cyanus, Fagopyrum esculentum, Festuca rubra, Lolium perenne, Lotus corniculatus, Phleum pratense, Trifolium pratense). After homogeneous vegetation establishment, experimental vegetative filter strips underwent rapid changes within the following two years, with Agrostis stolonifera, Festuca rubra, Lolium perenne and Phleum pratense becoming dominant and with the establishment of spontaneous vegetation. Co-inertia analysis showed that plant dynamics and soil residual pesticides could be significantly correlated, with the triazole fungicide epoxiconazole, the imidazole fungicide prochloraz and the neonicotinoid insecticide thiamethoxam as strong drivers of the correlation. However, the correlation was vegetative-filter-strip-specific, thus showing that correlation between plant dynamics and soil pesticides likely involved additional factors, such as threshold levels of residual pesticides. This situation of complex interactions between plants and soil contamination is further discussed in terms of agronomical, environmental and health issues.
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Affiliation(s)
- Anne-Antonella Serra
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - Anne-Kristel Bittebière
- Université de Lyon 1, CNRS, UMR 5023 LEHNA, 43 Boulevard du 11 novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Cendrine Mony
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - Kahina Slimani
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - Frédérique Pallois
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - David Renault
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - Ivan Couée
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France.
| | - Gwenola Gouesbet
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - Cécile Sulmon
- Univ Rennes, Université de Rennes 1, CNRS, ECOBIO [(Ecosystems-Biodiversity-Evolution)] - UMR 6553, Campus de Beaulieu, 263 avenue du Général Leclerc, F-35042 Rennes Cedex, France
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Wang Y, Du L, Liu H, Long D, Huang M, Wang Y, Huang S, Jin D. Halosulfuron methyl did not have a significant effect on diversity and community of sugarcane rhizosphere microflora. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123040. [PMID: 32526443 DOI: 10.1016/j.jhazmat.2020.123040] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/24/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Halosulfuron methyl (HM) is a new, highly active sulfonylurea herbicide that has been widely used for weed control in agricultural production. However, its potential ecological risks remain unknown. In this study, we investigated the impact of different concentrations of HM on bacterial communities in sugarcane rhizospheric soil by using 16S rRNA gene high-throughput sequencing. The half-life of HM for 130 mg/kg, 600 mg/kg, and 1300 mg/kg spraying concentrations were 6.64, 9.19, and 9.87 d, respectively. HM application did not alter the alpha or beta diversity of the soil bacterial community, whereas some microbial populations and the main microbial functional groups were significantly altered by HM exposure. The phylum Cyanobacteria and genus unclassified Chloroflexi group KD4-96 were found to be positively correlated with HM concentration in soils, indicating that they are highly involved in the biodegradation of HM in soils. Relationship analysis between soil properties and microbial communities showed that total nitrogen and total phosphorus concentration were two key factors that significantly influenced microbial community structure. To our best knowledge, this is the first microbial ecotoxicological assessment of HM in agricultural soil.
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Affiliation(s)
- Yanhui Wang
- Guangxi Key Laboratory for Biology of Crop Diseases and Insect Pests, Institute of Plant Protection, Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
| | - Liangwei Du
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Huijun Liu
- Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing, 102206, China
| | - Di Long
- Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning, 530007, China
| | - Mengge Huang
- Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning, 530007, China
| | - Yuting Wang
- Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing, 102206, China
| | - Shilin Huang
- Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing, 102206, China
| | - Decai Jin
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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35
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Jogaiah S, Satapute P, De Britto S, Konappa N, Udayashankar AC. Exogenous priming of chitosan induces upregulation of phytohormones and resistance against cucumber powdery mildew disease is correlated with localized biosynthesis of defense enzymes. Int J Biol Macromol 2020; 162:1825-1838. [DOI: 10.1016/j.ijbiomac.2020.08.124] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/01/2020] [Accepted: 08/14/2020] [Indexed: 01/15/2023]
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Detection and Characterization of Antibacterial Siderophores Secreted by Endophytic Fungi from Cymbidium aloifolium. Biomolecules 2020; 10:biom10101412. [PMID: 33036284 PMCID: PMC7600725 DOI: 10.3390/biom10101412] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 11/28/2022] Open
Abstract
Endophytic fungi from orchid plants are reported to secrete secondary metabolites which include bioactive antimicrobial siderophores. In this study endophytic fungi capable of secreting siderophores were isolated from Cymbidium aloifolium, a medicinal orchid plant. The isolated extracellular siderophores from orchidaceous fungi act as chelating agents forming soluble complexes with Fe3+. The 60% endophytic fungi of Cymbidium aloifolium produced hydroxamate siderophore on CAS agar. The highest siderophore percentage was 57% in Penicillium chrysogenum (CAL1), 49% in Aspergillus sydowii (CAR12), 46% in Aspergillus terreus (CAR14) by CAS liquid assay. The optimum culture parameters for siderophore production were 30 °C, pH 6.5, maltose and ammonium nitrate and the highest resulting siderophore content was 73% in P. chrysogenum. The total protein content of solvent-purified siderophore increased four-fold compared with crude filtrate. The percent Fe3+ scavenged was detected by atomic absorption spectra analysis and the highest scavenging value was 83% by P. chrysogenum. Thin layer chromatography of purified P. chrysogenum siderophore showed a wine-colored spot with Rf value of 0.54. HPLC peaks with Rts of 10.5 and 12.5 min were obtained for iron-free and iron-bound P. chrysogenum siderophore, respectively. The iron-free P. chrysogenum siderophore revealed an exact mass-to-charge ratio (m/z) of 400.46 and iron-bound P. chrysogenum siderophore revealed a m/z of 453.35. The solvent-extracted siderophores inhibited the virulent plant pathogens Ralstonia solanacearum, that causes bacterial wilt in groundnut and Xanthomonas oryzae pv. oryzae which causes bacterial blight disease in rice. Thus, bioactive siderophore-producing endophytic P. chrysogenum can be exploited in the form of formulations for development of resistance against other phytopathogens in crop plants.
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Sun Y, Cao Y, Tong L, Tao F, Wang X, Wu H, Wang M. Exposure to prothioconazole induces developmental toxicity and cardiovascular effects on zebrafish embryo. CHEMOSPHERE 2020; 251:126418. [PMID: 32443233 DOI: 10.1016/j.chemosphere.2020.126418] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/29/2020] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
Prothioconazole is a fungicide that has been widely used in general agriculture and livestock husbandry. This study evaluated the acute toxicity of prothioconazole to zebrafish embryos by assessing their hatching rate and malformation when exposed to different concentrations of prothioconazole. The 96 h-LC50 value of zebrafish embryos was 1.70 mg/L. Upon exposure to 0.85 mg/L, the mortality rate of the embryos significantly increased while their hatching rate decreased significantly. At prothioconazole concentrations higher than 0.43 mg/L, developmental morphologic abnormalities such as heart and yolk-sac edema, spine curvature, tail deformity, shortened body length and decreased eye area were observed. The heart rate of embryos decreased in a dose-dependent fashion during the exposure time. Prothioconazole exposure also resulted in increased rates of cardiac malformation detected by significant increase in the distance between the sinus venosus and bulbus arteriosus and the pericardium area. Moreover, the expression levels of genes related to cardiac development (amhc, vmhc, fli1, hand2, gata4, nkx2.5, tbx5 and atp2a2a) were significantly altered after exposure to prothioconazole. Indeed, this study revealed the adverse effects on the developmental and cardiovascular system of zebrafish embryo caused by prothioconazole. It further elucidated the risk of prothioconazole exposure to vertebrate cardiovascular toxicity. As such, it provides a theoretical foundation for pesticide risk management measures.
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Affiliation(s)
- Yongqi Sun
- School of Agricultural and Food Science, Zhejiang Agriculture & Forestry University, Hangzhou, China
| | - Yi Cao
- School of Agricultural and Food Science, Zhejiang Agriculture & Forestry University, Hangzhou, China
| | - Lili Tong
- School of Agricultural and Food Science, Zhejiang Agriculture & Forestry University, Hangzhou, China
| | - Fangyi Tao
- School of Agricultural and Food Science, Zhejiang Agriculture & Forestry University, Hangzhou, China
| | - Xiaonan Wang
- School of Agricultural and Food Science, Zhejiang Agriculture & Forestry University, Hangzhou, China
| | - Huiming Wu
- School of Agricultural and Food Science, Zhejiang Agriculture & Forestry University, Hangzhou, China.
| | - Mengcen Wang
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Pesticide & Environmental Toxicology, Zhejiang University, Hangzhou, China.
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38
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Zhu B, Wu J, Ji Q, Wu W, Dong S, Yu J, Zhang Q, Qin L. Diversity of rhizosphere and endophytic fungi in Atractylodes macrocephala during continuous cropping. PeerJ 2020; 8:e8905. [PMID: 32292655 PMCID: PMC7144587 DOI: 10.7717/peerj.8905] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 03/12/2020] [Indexed: 12/03/2022] Open
Abstract
Rhizospheric and endophytic fungi are key factors which influence plant fitness and soil fertility. Atractylodes macrocephala is one of the best-known perennial herbs used in traditional Chinese medicine. Continuous cropping has been shown to have a negative effect on its growth and renders it more susceptible to microbial pathogen attacks. In this study, we investigated the effects of continuous cropping on the endophytic and rhizospheric fungi associated with A. macrocephala using culture-independent Illumina MiSeq. Continuous cropping was found to decrease fungal diversity inside plant roots, stems, leaves and tubers. Additionally, we found that the structure and diversity of rhizospheric and endophytic fungal communities were altered by root-rot disease. Fusarium was overrepresented among root-rot rhizospheric and endophytic fungi, indicating that it has a major negative impact on plant health during A. macrocephala monocropping. Canonical correspondence analysis of the control and diseased samples revealed that pH, hydrolysis N, electrical conductivity and Hg content were well-correlated with fungal community composition during continuous cropping. Taken together, these results highlight the ecological significance of fungal communities in maintaining plant fitness and will guide the development strategies to attenuate the negative impacts of A. macrocephala continuous cropping.
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Affiliation(s)
- Bo Zhu
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianjun Wu
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qingyong Ji
- Lishui Academy of Agricultural and Forestry Sciences, Lishui, China
| | - Wei Wu
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shihui Dong
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jiayan Yu
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qiaoyan Zhang
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Luping Qin
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
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Khalid S, Shahid M, Murtaza B, Bibi I, Asif Naeem M, Niazi NK. A critical review of different factors governing the fate of pesticides in soil under biochar application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 711:134645. [PMID: 31822404 DOI: 10.1016/j.scitotenv.2019.134645] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/23/2019] [Accepted: 09/23/2019] [Indexed: 05/13/2023]
Abstract
Pesticides are extensively used in the modern agricultural system. The inefficient and extensive use of pesticides during the last 5 to 6 decades inadvertently led to serious deterioration of environmental quality with health risk to living organisms, including humans. It is important to use some environmentally-friendly and sustainable approaches to remediate, restore and maintain soil quality. Biochar has gained considerable attention globally as a promising soil amendment because it has the ability to adsorb and as such minimize the bioavailability of pesticides in soils. This review emphasizes the recent trends and implications of biochar in pesticide-contaminated soils, as well as highlights need of the pesticides use and associated environmental issues in context of the biochar application. The overarching aim of this review is to signify the role of biochar on primary processes such as effect of biochar on the persistence, mineralization, leaching and efficacy of pesticides in soil. Notably, the effects of biochar on pesticide adsorption-desorption, degradation and bioavailability under various operating/production conditions are critically discussed. This review delineates the indirect impact of biochar on pesticides persistence in soils and proposes key recommendations for future research which are essential for the remediation and restoration of pesticides-impacted soils.
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Affiliation(s)
- Sana Khalid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
| | - Muhammad Shahid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan.
| | - Behzad Murtaza
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
| | - Irshad Bibi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Asif Naeem
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan; School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba 4350, Queensland, Australia.
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40
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DeBritto S, Gajbar TD, Satapute P, Sundaram L, Lakshmikantha RY, Jogaiah S, Ito SI. Isolation and characterization of nutrient dependent pyocyanin from Pseudomonas aeruginosa and its dye and agrochemical properties. Sci Rep 2020; 10:1542. [PMID: 32005900 PMCID: PMC6994680 DOI: 10.1038/s41598-020-58335-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 11/19/2019] [Indexed: 11/11/2022] Open
Abstract
Pyocyanin is a blue green phenazine pigment produced in large quantities by active cultures of Pseudomonas aeruginosa, with advantageous applications in medicine, agriculture and for the environment. Hence, in the present study, a potent bacterium was isolated from agricultural soil and was identified morphologically and by 16S rRNA sequencing as P. aeruginosa (isolate KU_BIO2). When the influence of nutrient supplements in both King’s A and Nutrient media as amended was investigated, an enhanced pyocyanin production of 2.56 µg ml−1 was achieved in King’s A medium amended with soya bean followed by 1.702 µg ml−1 of pyocyanin from the nutrient medium amended with sweet potato. Purified pyocyanin was characterized by UV-Vis Spectrophotometer and Fourier-Transform Infrared spectroscopy (FTIR). Furthermore, Liquid Chromatography Mass Spectrum (LCMS) and Nuclear Magnetic Resonance (NMR) confirmed its mass value at 211 and as N-CH3 protons resonating at 3.363 ppm as a singlet respectively. The isolated pyocyanin displayed remarkable dye property by inducing color change in cotton cloth from white to pink. Lastly, the antifungal activity of test pyocyanin showed inhibition of growth of rice blast fungus, Magnaporthe grisea and bacterial blight of rice, Xanthomonas oryzae at concentrations of 150 and 200 ppm, respectively. Thus, this investigation provides evidence for diverse actions of pyocyanin which are nutrient dependent and are capable of acting on a large scale, by utilizing microbes existing in agriculture wastes, and thus could be used as an alternative source in the making of natural textile dyes with strong durability and a broad spectrum of ecofriendly agrochemicals.
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Affiliation(s)
- Savitha DeBritto
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India.,Division of Biological Sciences, School of Science and Technology, The University of Goroka, Goroka, 441, Papua New Guinea
| | - Tanzeembanu D Gajbar
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Praveen Satapute
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Lalitha Sundaram
- Department of Botany, Periyar Palkalai Nagar, Periyar University, Salem, 636011, Tamil Nadu, India
| | | | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka, 580003, India.
| | - Shin-Ichi Ito
- Laboratory of Molecular Plant Pathology, Department of Biological and Environmental Sciences, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan. .,Research Center for Thermotolerant Microbial Resources (RCTMR), Yamaguchi University, Yamaguchi, 753-8515, Japan.
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Assessment of malathion toxicity on cytophysiological activity, DNA damage and antioxidant enzymes in root of Allium cepa model. Sci Rep 2020; 10:886. [PMID: 31964992 PMCID: PMC6972773 DOI: 10.1038/s41598-020-57840-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 12/31/2019] [Indexed: 12/04/2022] Open
Abstract
The current study was emphasized to assess the effect of malathion on root system (cell division and kinetics of the root elongation) and stress related parameters in Allium cepa L. The roots were exposed to different concentrations (0.05, 0.13, 0.26, 0.39 and 0.52 g/L) of malathion for different treatment periods (4, 8 and 18 h). The results revealed that malathion application affected the growth rate and cell division in root tips. The root elongation kinetics were impaired at 0.13 to 0.52 g/L concentrations. Reduction in tissue water content (TWC) indicated the limited osmotic adjustment due to membrane damage. Further, a decrease in sucrose content was observed in contrast to the accumulation of proline (upto 0.39 g/L). Moreover, malathion exposure elevated the levels of lipid peroxidation followed by changes in antioxidant enzymes status. The activities of ascorbate peroxidase (APX) and glutathione reductase (GR) were down-regulated whereas the activities of catalase (CAT), glutathione-S-transferase (GST) and superoxide dismutase (SOD) were up-regulated except in 0.52 g/L malathion. The molecular docking study of malathion with CAT, GST, SOD, APX and GR also supported of above results for their activity. All these physiological responses varied with increasing malathion concentration and duration of treatment. The single cell gel electrophoresis results showed that all concentrations of malathion induced DNA damage in root cells. The findings depicted that malathion application induces cytotoxic and phytotoxic effects mediated through oxidative stress and subsequent injuries.
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Huang LQ, Niu YC, Su L, Deng H, Lyu H. The potential of endophytic fungi isolated from cucurbit plants for biocontrol of soilborne fungal diseases of cucumber. Microbiol Res 2020; 231:126369. [DOI: 10.1016/j.micres.2019.126369] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/15/2019] [Accepted: 10/26/2019] [Indexed: 12/24/2022]
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Wang X, Liu Y, Xue M, Wang Z, Yu J, Guo X. Enantioselective degradation of chiral fungicides triticonazole and prothioconazole in soils and their enantioselective accumulation in earthworms Eisenia fetida. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 183:109491. [PMID: 31377517 DOI: 10.1016/j.ecoenv.2019.109491] [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] [Received: 05/16/2019] [Revised: 07/25/2019] [Accepted: 07/28/2019] [Indexed: 06/10/2023]
Abstract
Triticonazole and prothioconazole are widely used systemic agricultural triazole fungicides both with a chiral center. In this work, the enantioselective degradation of triticonazole and prothioconazole in three types of soils were investigated under native conditions using reversed phase liquid chromatography-tandem mass spectrometry with a Chiralcel OD-RH column. The results indicated that the enantioselective degradation was observed with S-triticonazole and R-prothioconazole preferentially degraded and the degradation rate was fast with a half-life within 6 days. It was also found that the presence of earthworms can accelerate the degradation and further enhance degradation enantioselectivity of triticonazole and prothioconazole in soils. Moreover, the enantioselective of triticonazole and prothioconazole in earthworms were studied. The results showed that the bioaccumulation was enantioselective with R-triticonazole and S-prothioconazole preferentially accumulated, which was similar to the soil. Our findings suggest that the enantioselective toxicity and potential effects of the metabolites should be considered for more accurate assessment of ecological risks of triticonazole and prothioconazole to target and non-target species.
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Affiliation(s)
- Xia Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, PR China
| | - Yanru Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, PR China
| | - Mengyao Xue
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, PR China
| | - Zhaokun Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, PR China
| | - Jia Yu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, PR China.
| | - Xingjie Guo
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, PR China.
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Ding H, Zheng X, Zhang J, Zhang Y, Yu J, Chen D. Influence of chlorothalonil and carbendazim fungicides on the transformation processes of urea nitrogen and related microbial populations in soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:31133-31141. [PMID: 31463752 DOI: 10.1007/s11356-019-06213-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
To improve crop yielding, a large amount of fungicides is continuously applied during the agricultural management, while the effects of fungicides residues on microbial processing of N in soil need further study. In the present study, two broad spectrum fungicides, chlorothalonil and carbendazim, were applied at the rates of 5, 10, and 50 mg of active ingredient (A.I.) per kg of dry soil combined with urea with 200 mg of N per kg of dry soil under laboratory conditions. The results showed that chlorothalonil obviously retarded the hydrolysis of urea, whereas carbendazim accelerated it in 4 days after the treatments (P < 0.05). Chlorothalonil reduced denitrification, nitrification, and N2O production (P < 0.05), but not for carbendazim. Further analysis on N-associated microbial communities showed chlorothalonil reduced nitrosomonas populations at the rates of 10 and 50 mg of A.I. per kg and autotrophic nitrifying bacterial populations at three application rates (P < 0.05), but Carbendazim decreased nitrosomonas populations only at the rate of 50 mg of A.I. per kg and also autotrophic nitrifying bacterial populations at three rates and heterotrophic nitrifying bacterial populations at the rates of 10 and 50 mg of A.I. per kg. The reasons for this difference were ascribed to arrest urea hydrolysis and impediment of denitrification and nitrification processes by chlorothalonil. In conclusion, to improve crop yielding, chlorothalonil might be more beneficial to conserve soil N by improving soil N fertility, compared with carbendazim.
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Affiliation(s)
- Hong Ding
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou, 350013, China.
| | - Xiangzhou Zheng
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou, 350013, China
| | - Jin Zhang
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou, 350013, China
| | - Yushu Zhang
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou, 350013, China
| | - Juhua Yu
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou, 350013, China
| | - Deli Chen
- Faculty of Veterinary and Agricultural Sciences, the University of Melbourne, Victoria, 3010, Australia
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Guerrieri A, Dong L, Bouwmeester HJ. Role and exploitation of underground chemical signaling in plants. PEST MANAGEMENT SCIENCE 2019; 75:2455-2463. [PMID: 31166074 PMCID: PMC6771575 DOI: 10.1002/ps.5507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/01/2019] [Accepted: 06/01/2019] [Indexed: 05/09/2023]
Abstract
The soil ecosystem is composed of a mixture of living organisms and non-living matter as well as the complex interactions between them. In the past 100 years or so, agricultural soil ecosystems have been strongly affected by agricultural practices such as tillage and the use of pesticides and fertilizers, which strongly affect soil nutrient composition, pH and biodiversity. In modern pest management, however, the focus is gradually shifting from crop production through agricultural practices to soil ecosystem protection. In this review we discuss how the underground chemical signals secreted by plant roots play a role in keeping the soil ecosystem in balance and how they affect plant fitness by shaping the root biome, increasing nutrient availability, promoting symbiosis, and attracting beneficial organisms and repelling harmful ones, including other plants. We review a number of fascinating cases, such as signaling molecules with dual, positive and negative, functions and bacterial quorum sensing mimicking molecules. Finally, examples of how these compounds can be exploited in modern pest management are reviewed, and the prospects for future developments discussed. © 2019 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Alessandra Guerrieri
- Plant Hormone Biology GroupSwammerdam Institute for Life Sciences (SILS), University of AmsterdamAmsterdamthe Netherlands
| | - Lemeng Dong
- Plant Hormone Biology GroupSwammerdam Institute for Life Sciences (SILS), University of AmsterdamAmsterdamthe Netherlands
| | - Harro J Bouwmeester
- Plant Hormone Biology GroupSwammerdam Institute for Life Sciences (SILS), University of AmsterdamAmsterdamthe Netherlands
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Satapute P, Paidi MK, Kurjogi M, Jogaiah S. Physiological adaptation and spectral annotation of Arsenic and Cadmium heavy metal-resistant and susceptible strain Pseudomonas taiwanensis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 251:555-563. [PMID: 31108288 DOI: 10.1016/j.envpol.2019.05.054] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 05/03/2019] [Accepted: 05/12/2019] [Indexed: 06/09/2023]
Abstract
In the present study, the 16S-rRNA sequencing of heavy metal-resistant and susceptible bacterial strains isolated from the industrial and agriculture soil showed resemblance with Pseudomonas taiwanensis. Based on the growth rate, two bacterial strains SJPS_KUD54 and KUD-MBBT4 exhibited 10 ppm tolerance to Arsenic and Cadmium. These two heavy metals caused, a significant increase in stress enzymes like superoxide dismutase, catalase and glutathione S-transferase activities in SJPS_KUD54 when compared to KUD-MBBT4. Following heavy metal treatment, the atomic-force-microscopy observations showed no change in the cell-wall of SJPS_KUD54, whereas the cell-wall of KUD-MBBT4 got ruptured. Moreover, the protein-profile of SJPS_KUD54 treated with heavy metals exhibited varied patterns in comparison with untreated control. In addition, the accumulation of hydroxyl, thiol and amides were found in the SJPS_KUD54 relative to its control. Furthermore, the resistant SJPS_KUD54 strain showed a remarkable bioaccumulation properties to both Arsenic and Cadmium. Thus, it is inferred that the growth rate, stress enzymes and functional-groups play a significant role in the physiological-adaption of SJPS_KUD54 during stress conditions, which is positively involved in the prevention or repair mechanism for reducing the risks caused by heavy metal stress.
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Affiliation(s)
- Praveen Satapute
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka 580003, India
| | - Murali Krishna Paidi
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka 580003, India
| | - Mahantesh Kurjogi
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka 580003, India
| | - Sudisha Jogaiah
- Laboratory of Plant Healthcare and Diagnostics, P.G. Department of Biotechnology and Microbiology, Karnatak University, Dharwad, Karnataka 580003, India.
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