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Yoon Y, Cho M. Understanding atrazine elimination via treatment of the enzyme-based Fenton reaction: Kinetics, mechanism, reaction pathway, and metabolites toxicity. CHEMOSPHERE 2024; 349:140982. [PMID: 38103653 DOI: 10.1016/j.chemosphere.2023.140982] [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: 09/16/2023] [Revised: 12/04/2023] [Accepted: 12/14/2023] [Indexed: 12/19/2023]
Abstract
The degradation kinetics and mechanism of atrazine (ATZ) via an enzyme-based Fenton reaction were investigated at various substrate concentrations and pH values. Toxicological assessment was conducted on ATZ and its degradation products, and the associated reaction pathway was examined. The in situ production of hydrogen peroxide (H2O2) was monitored within the range of 3-15 mM, depending on the increase in glucose concentration, while decreasing the pH to 3.2-5.1 (initial pH of 5.8) or 6.5-7.4 (initial pH of 7.7). The degradation efficiency of ATZ was approximately 2-3 times higher at an initial pH of 5.8 with lower glucose concentrations than at an initial pH of 7.7 with higher substrate concentrations during the enzyme-based Fenton reaction. The apparent pseudo-first-order rate constant for H2O2 decomposition under various conditions in the presence of ferric citrate was 1.9-6.3 × 10-5 s-1. The •OH concentration ([•OH]ss) during the enzyme-based Fenton reaction was 0.5-4.1 × 10-14 M, and the second-order rate constant for ATZ degradation was 1.5-3.3 × 109 M-1 s-1. ATZ intrinsically hinders the growth and development of Arabidopsis thaliana, and its inhibitory effect is marginal, depending on the reaction time of the enzyme-based Fenton process. The ATZ transformation during this process occurs through dealkylation, hydroxylation, and dechlorination via •OH-mediated reactions. The degradation kinetics, mechanism, and toxicological assessment in the present study could contribute to the development and application of enzyme-based Fenton reactions for in situ pollutant abatement. Moreover, the enzyme-based Fenton reaction could be an environmentally benign and applicable approach for eliminating persistent organic matter, such as herbicides, using diverse H2O2-producing microbes and ubiquitous ferric iron with organic complexes.
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Affiliation(s)
- Younggun Yoon
- Division of Biotechnology, SELS Center, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, South Korea.
| | - Min Cho
- Division of Biotechnology, SELS Center, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, South Korea.
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2
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Elarabi NI, Abdelhadi AA, Nassrallah AA, Mohamed MSM, Abdelhaleem HAR. Biodegradation of isoproturon by Escherichia coli expressing a Pseudomonas putida catechol 1,2-dioxygenase gene. AMB Express 2023; 13:101. [PMID: 37751014 PMCID: PMC10522561 DOI: 10.1186/s13568-023-01609-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/15/2023] [Indexed: 09/27/2023] Open
Abstract
The phenylurea herbicides are persistent in soil and water, necessitating the creation of methods for removing them from the environment. This study aimed to examine the soil microbial diversity, searching for local bacterial isolates able to efficiently degrade the phenylurea herbicide isoproturon, 3-(4-isopropylphenyl)-1, 1-dimethylurea (IPU). The best isolates able to effectively degrade IPU were selected, characterized, and identified as Pseudomonas putida and Acinetobacter johnsonii. The catechol 1, 2-dioxygenase enzyme's catA gene was amplified, cloned, and expressed in E. coli M15. The Expressed E. coli showed high degradation efficiency (44.80%) as analyzed by HPLC after 15 days of inoculation in comparison to P. putida (21.60%). The expression of the catA gene in P. putida and expressed E. coli was measured using quantitative polymerase chain reaction (qPCR). The results displayed a significant increase in the mRNA levels of the catA gene by increasing the incubation time with IPU. Hydrophilic interaction chromatography (HILIC) mass spectrometry analysis revealed that three intermediate metabolites, 1-(4-isopropylphenyl)-3-methylurea (MDIPU), 4-Isopropylaniline (4-IA) and 1-(4-isopropylphenyl) urea (DDIPU) were generated by both P. putida and expressed E. coli. In addition, IPU-induced catA activity was detected in both P. putida and expressed E. coli. The supernatant of both P. putida and expressed E. coli had a significant influence on weed growth. The study clearly exhibited that P. putida and expressed E. coli were capable of metabolizing IPU influentially and thus could be utilized for bioremediation and biodegradation technology development.
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Affiliation(s)
- Nagwa I Elarabi
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Abdelhadi A Abdelhadi
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
| | - Amr A Nassrallah
- Department of Biochemistry, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
- Basic Applied Science institute, Egypt-Japan University of Science and Technology (E-JUST), P.O. Box 179, New Borg El- Arab City, 21934, Alexandria, Egypt
| | - Mahmoud S M Mohamed
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Heba A R Abdelhaleem
- College of Biotechnology, Misr University for Science and Technology (MUST), 6(th) October City, Egypt
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3
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Dash DM, Osborne WJ. A systematic review on the implementation of advanced and evolutionary biotechnological tools for efficient bioremediation of organophosphorus pesticides. CHEMOSPHERE 2023; 313:137506. [PMID: 36526134 DOI: 10.1016/j.chemosphere.2022.137506] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 11/11/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Ever since the concept of bioremediation was introduced, microorganisms, microbial enzymes and plants have been used as principal elements for Organophosphate pesticide (OPP) bioremediation. The enzyme systems and genetic profile of these microbes have been studied deeply in past years. Plant growth promoting rhizobacteria (PGPR) are considered as one of the potential candidates for OPP bioremediation and has been widely used to stimulate the phytoremediation potential of plants. Constructed wetlands (CWs) in OPP biodegradation have brought new prospects to microcosm and mesocosm based remediation strategies. Application of synthetic biology has provided a new dimension to the field of OPP bioremediation by introducing concepts like, gene manipulation andediting, expression and regulation of catabolic enzymes, implementation of whole-cell based and enzyme based biosensor systems for the detection and monitoring of OPP pollution in both terrestrial and aquatic environment. System biology and bioinformatics tools have rendered significant knowledge regarding the genetic, enzymatic and biochemical aspects of microbes and plants thereby, helping researchers to analyze the mechanism of OPP biodegradation. Structural biology has provided significant conceptual information regarding OPP biodegradation pathways, structural and functional characterization of metabolites and enzymes, enzyme-pollutant interactions, etc. Therefore, this review discussed the prospects and challenges of most advanced and high throughput strategies implemented for OPP biodegradation. The review also established a comparative analysis of various bioremediation techniques and highlighted the interdependency among them. The review highly suggested the simultaneous implementation of more than one remediation strategy or a combinational approach creating an advantageous hybrid technique for OPP bioremediation.
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Affiliation(s)
- Dipti Mayee Dash
- Department of Bioscience School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - W Jabez Osborne
- Department of Bioscience School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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Asraful Islam SM, Yeasmin S, Saiful Islam M. Organophosphorus pesticide tolerance of transgenic Arabidopsis thaliana by bacterial ophB gene encode organophosphorus hydrolase. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2021; 56:1051-1056. [PMID: 34842510 DOI: 10.1080/03601234.2021.2009731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organophosphate hydrolase (OphB) gene from Pseudomonas sp. was transferred into Arabidopsis plants to observe the bioremediation ability and tolerance level of the transgenic plant to organophosphate pesticides contaminants. Gene transfer was observed by PCR of the transgenic Arabidopsis plants' genomic DNA. Expression of ophB gene and protein levels in the transgenic Arabidopsis plants was observed by western blot analysis. The transgenic plants were resistant and tolerant to chlorpyrifos (an organophosphate pesticide), as evidenced by a toxicity test, where the transgenic plants produced greater shoot and root biomass than that of wild type plants. The fresh weight of transgenic Arabidopsis plants' did not reduced significantly till 400 ppm chlorpyrifos treatment, but fresh weight of wild type Arabidopsis plants' significantly reduced by the application of 100 ppm chlorpyrifos. Moreover, in 600 ppm chlorpyrifos liquid culture, transgenic Arabidopsis plants' produced 1.34 g biomass from 100 seeds, but wild type Arabidopsis plants' produced only 0.24 g biomass from 100 seeds. This study indicates that transgenic Arabidopsis plants having ophB gene increase the tolerance level of organophosphate pesticides.
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Affiliation(s)
- Shah Md Asraful Islam
- Department of Plant Pathology, Patuakhali Science and Technology University, Dumki, Bangladesh
| | - Shabina Yeasmin
- Department of Forest Products, IALS, Gyeongsang National University, Jinju, Republic of Korea
| | - Md Saiful Islam
- Department of Soil Science, Patuakhali Science and Technology University, Dumki, Bangladesh
- Faculty of Environmental Management, Prince of Songkla University, Songkhla, Thailand
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Aguiar LM, Souza MDF, de Laia ML, de Oliveira Melo J, da Costa MR, Gonçalves JF, Silva DV, Dos Santos JB. Metagenomic analysis reveals mechanisms of atrazine biodegradation promoted by tree species. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115636. [PMID: 33254605 DOI: 10.1016/j.envpol.2020.115636] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/18/2020] [Accepted: 09/08/2020] [Indexed: 06/12/2023]
Abstract
Metagenomics has provided the discovery of genes and metabolic pathways involved in the degradation of xenobiotics. Some microorganisms can metabolize these compounds, potentiating phytoremediation in association with plant. This study aimed to study the metagenome and the occurrence of atrazine degradation genes in rhizospheric soils of the phytoremediation species Inga striata and Caesalphinea ferrea. The genera of microorganisms predominant in the rhizospheric soils of I. striata and C. ferrea were Mycobacterium, Conexibacter, Bradyrhizobium, Solirubrobacter, Rhodoplanes, Streptomyces, Geothrix, Gaiella, Nitrospira, and Haliangium. The atzD, atzE, and atzF genes were detected in the rhizospheric soils of I. striata and atzE and atzF in the rhizospheric soils of C. ferrea. The rhizodegradation by both tree species accelerates the degradation of atrazine residues, eliminating toxic effects on plants highly sensitive to this herbicide. This is the first report for the species Agrobacterium rhizogenes and Candidatus Muproteobacteria bacterium and Micromonospora genera as atrazine degraders.
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Affiliation(s)
- Luciana Monteiro Aguiar
- Plant Production Department, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, Brazil
| | - Matheus de Freitas Souza
- Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Rio Grande do Norte, Brazil.
| | - Marcelo Luiz de Laia
- Department of Forest Engineering, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, Brazil
| | - Janaína de Oliveira Melo
- Department of Basic Sciences, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, Brazil
| | - Márcia Regina da Costa
- Plant Production Department, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, Brazil
| | - Janaína Fernandes Gonçalves
- Department of Forest Engineering, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, Brazil
| | - Daniel Valadão Silva
- Department of Agricultural and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Rio Grande do Norte, Brazil
| | - José Barbosa Dos Santos
- Plant Production Department, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Minas Gerais, Brazil
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Rai PK, Kim KH, Lee SS, Lee JH. Molecular mechanisms in phytoremediation of environmental contaminants and prospects of engineered transgenic plants/microbes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 705:135858. [PMID: 31846820 DOI: 10.1016/j.scitotenv.2019.135858] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/21/2019] [Accepted: 11/28/2019] [Indexed: 05/06/2023]
Abstract
Concerns about emerging environmental contaminants have been growing along with industrialization and urbanization around the globe. Among various options for remediating these contaminants, phytotechnology is suggested as a feasible option to maintain the environmental sustainability. The recent advances in phytoremediation, genetic/molecular/omics/metabolic engineering, and nanotechnology are opening new paths for efficient treatment of emerging organic/inorganic contaminants. In this respect, elucidation of molecular mechanisms and genetic engineering of hyperaccumulator plants is expected to enhance remediation of environmental contaminants. This review was organized to offer valuable insights into the molecular mechanisms of phytoremediation and the prospects of transgenic hyperaccumulators with enhanced stress tolerance to diverse contaminants such as heavy metals and metalloids, xenobiotics, explosives, poly aromatic hydrocarbons (PAHs), petroleum hydrocarbons, pesticides, and nanoparticles. The roles of genoremediation and nanoparticles in augmenting the phytoremediation technology are also described in an interrelated framework with biotechnological prospects (e.g., plant molecular nano-farming). Finally, political debate on the preferential use of crops versus non-crop hyperaccumulators in genoremediation, limitations of transgenics in phytotechnologies, and their public acceptance issues are discussed in the policy framework.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University, Aizawl 796004, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea.
| | - Sang Soo Lee
- Department of Environmental Engineering, Yonsei University, Wonju 26494, Republic of Korea.
| | - Jin-Hong Lee
- Department of Environmental Engineering, Chungnam National University, Daejeon 34148, Republic of Korea
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Esquirol L, Peat TS, Sugrue E, Balotra S, Rottet S, Warden AC, Wilding M, Hartley CJ, Jackson CJ, Newman J, Scott C. Bacterial catabolism of s-triazine herbicides: biochemistry, evolution and application. Adv Microb Physiol 2020; 76:129-186. [PMID: 32408946 DOI: 10.1016/bs.ampbs.2020.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The synthetic s-triazines are abundant, nitrogen-rich, heteroaromatic compounds used in a multitude of applications including, herbicides, plastics and polymers, and explosives. Their presence in the environment has led to the evolution of bacterial catabolic pathways in bacteria that allow use of these anthropogenic chemicals as a nitrogen source that supports growth. Herbicidal s-triazines have been used since the mid-twentieth century and are among the most heavily used herbicides in the world, despite being withdrawn from use in some areas due to concern about their safety and environmental impact. Bacterial catabolism of the herbicidal s-triazines has been studied extensively. Pseudomonas sp. strain ADP, which was isolated more than thirty years after the introduction of the s-triazine herbicides, has been the model system for most of these studies; however, several alternative catabolic pathways have also been identified. Over the last five years, considerable detail about the molecular mode of action of the s-triazine catabolic enzymes has been uncovered through acquisition of their atomic structures. These structural studies have also revealed insights into the evolutionary origins of this newly acquired metabolic capability. In addition, s-triazine-catabolizing bacteria and enzymes have been used in a range of applications, including bioremediation of herbicides and cyanuric acid, introducing metabolic resistance to plants, and as a novel selectable marker in fermentation organisms. In this review, we cover the discovery and characterization of bacterial strains, metabolic pathways and enzymes that catabolize the s-triazines. We also consider the evolution of these new enzymes and pathways and discuss the practical applications that have been considered for these bacteria and enzymes. One Sentence Summary: A detailed understanding of bacterial herbicide catabolic enzymes and pathways offer new evolutionary insights and novel applied tools.
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Affiliation(s)
- Lygie Esquirol
- Biocatalysis & Synthetic Biology Team, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia; Research School of Chemistry, Australian National University, Canberra, ACT, Australia
| | - Thomas S Peat
- CSIRO Biomedical Manufacturing, Parkville, VIC, Australia
| | - Elena Sugrue
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia
| | - Sahil Balotra
- Biocatalysis & Synthetic Biology Team, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia
| | - Sarah Rottet
- Biocatalysis & Synthetic Biology Team, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia; Synthetic Biology Future Science Platform, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia
| | - Andrew C Warden
- Biocatalysis & Synthetic Biology Team, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia
| | - Matthew Wilding
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia; CSIRO Biomedical Manufacturing, Parkville, VIC, Australia; Synthetic Biology Future Science Platform, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia
| | - Carol J Hartley
- Biocatalysis & Synthetic Biology Team, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia
| | - Colin J Jackson
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia
| | - Janet Newman
- CSIRO Biomedical Manufacturing, Parkville, VIC, Australia
| | - Colin Scott
- Biocatalysis & Synthetic Biology Team, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia; Synthetic Biology Future Science Platform, CSIRO Land & Water, Black Mountain Science and Innovation Park, Canberra, ACT, Australia
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Roueinfar M, Abraham KM, Hong KL. In-Solution Molecular Recognition Comparison of Aptamers against the Herbicide Atrazine. ACS OMEGA 2019; 4:16201-16208. [PMID: 31592487 PMCID: PMC6777074 DOI: 10.1021/acsomega.9b02414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Atrazine is a common herbicide that is widely used to control weed growth in both agricultural and residential settings. It has been shown to act as an endocrine disruptor that affects aquatic organisms. Rapid and low-cost monitoring methods for atrazine is the first step to mitigate its widespread persistency. Aptamers are small synthetic oligonucleotides that can assume a 3D structure to act as the molecular recognition element for a specific target of interest. Two different atrazine binding aptamers (R12.23 Trunc. and R12.45 Trunc.) have been identified from the same library design but with fundamentally different in vitro selection methodologies. While the R12.23 Trunc. has been utilized in immobilized biosensing platforms, it is unclear if in-solution-based applications would be suitable for both atrazine binding aptamers. This study provides the first insight of comparative in-solution binding profiles of the two atrazine binding aptamers. Based on our results, this information will be useful for future biosensing platform development utilizing the two aptamers.
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Affiliation(s)
- Mina Roueinfar
- Department
of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Department of Biology,
College of Science and Engineering, and Department of Physics, College of
Science and Engineering, Wilkes University, 84 W. South Street, Wilkes-Barre, Pennsylvania 18766, United States
| | - Kevin M. Abraham
- Department
of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Department of Biology,
College of Science and Engineering, and Department of Physics, College of
Science and Engineering, Wilkes University, 84 W. South Street, Wilkes-Barre, Pennsylvania 18766, United States
| | - Ka Lok Hong
- Department
of Pharmaceutical Sciences, Nesbitt School of Pharmacy, Department of Biology,
College of Science and Engineering, and Department of Physics, College of
Science and Engineering, Wilkes University, 84 W. South Street, Wilkes-Barre, Pennsylvania 18766, United States
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Hussain I, Puschenreiter M, Gerhard S, Sani SGAS, Khan WUD, Reichenauer TG. Differentiation between physical and chemical effects of oil presence in freshly spiked soil during rhizoremediation trial. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:18451-18464. [PMID: 31044381 PMCID: PMC6570674 DOI: 10.1007/s11356-019-04819-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/07/2019] [Indexed: 05/05/2023]
Abstract
Petroleum contamination and its remediation via plant-based solutions have got increasing attention by environmental scientists and engineers. In the current study, the physiological and growth responses of two diesel-tolerant plant species (tolerance limit: 1500-2000 mg/kg), Italian ryegrass (Lolium multiflorum) and Birdsfoot trefoil (Lotus corniculatus), have been investigated in vegetable oil- and diesel oil-amended soils. A long-term (147-day) greenhouse pot experiment was conducted to differentiate the main focus of the study: physical and chemical effects of oil (vegetable and diesel) in freshly spiked soils via evaluating the plant performance and hydrocarbon degradation. Moreover, plant performance was evaluated in terms of seed germination, plant shoot biomass, physiological parameters, and root biomass. Addition of both diesel oil and vegetable oil in freshly spiked soils showed deleterious effects on seedling emergence, root/shoot biomass, and chlorophyll content of grass and legume plants. Italian ryegrass showed more sensitivity in terms of germination rate to both vegetable and diesel oil as compared to non-contaminated soils while Birdsfoot trefoil reduced the germination rate only in diesel oil-impacted soils. The results of the current study suggest that both physical and chemical effects of oil pose negative effects of plant growth and root development. This observation may explain the phenomenon of reduced plant growth in aged/weathered contaminated soils during rhizoremediation experiments.
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Affiliation(s)
- Imran Hussain
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria.
- Department of Molecular Systems Biology, Faculty of Life sciences, University of Vienna, Vienna, Austria.
- Department of Natural Resources and Environmental Engineering, Bioenergy and Environmental Remediation Lab (BERL), Hanyang, South Korea.
| | - Markus Puschenreiter
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences Vienna, Konrad Lorenz Straße 24, A-3430, Tulln, Austria
| | - Soja Gerhard
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria
| | | | - Waqas-Us-Din Khan
- Sustainable Development Study Centre, Government College University, Lahore, Pakistan
| | - Thomas G Reichenauer
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria.
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Sui X, Wu Q, Chang W, Fan X, Song F. Proteomic analysis of the response of Funnelifor mismosseae/Medicago sativa to atrazine stress. BMC PLANT BIOLOGY 2018; 18:289. [PMID: 30463523 PMCID: PMC6247736 DOI: 10.1186/s12870-018-1492-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 10/19/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Arbuscular mycorrhizal (AM) fungi form symbiotic associations with host plants can protect host plants against diverse biotic and abiotic stresses, and promote biodegradation of various contaminants. However, the molecular mechanisms of how the arbuscular mycorrhizal fungi and host plant association on atrazine stress were still poorly understood. To better characterize how arbuscular mycorrhizal fungi and host plant interactions increase atrazine stress, we performed physiological and proteomic analysis of Funneliformis mosseae (mycorrhizal fungi) and Medicago sativa (alfalfa) association under atrazine stress. RESULTS The results showed that in the Arbuscular mycorrhizal, protective enzymes were up regulated and the malondialdehyde content increased relative to those of non-mycorrhizal M.sativa. We also examined the atrazine degradation rates within the nutrient solution, and a 44.43% reduction was observed with the mycorrhizal M.sativa, with 30.83% of the reduction attributed to F. mosseae. The accumulation content in root and stem of mycorrhizal M.sativa were obviously increased 11.89% and 16.33% than those of non- mycorrhizal M.sativa. The activity of PPO, POD, CAT and SOD in mycorrhizal M.sativa were obviously higher than non mycorrhizal M.sativa under atrazine stess. We identified differential root proteins using isobaric tags for relative and absolute quantization coupled with liquid chromatography-mass spectrometry, with 533 proteins identified (276 unregulated and 257 downregulated). The differentially expressed proteins were further examined using GO, BLAST comparisons, and a literature inquiry and were classified into the categories of atrazine degradation (37.1%); atrazine stress response (28.6%); plant immune responses (14.3%); translation, synthesis, and processing (10%); and signal transduction and biological processes (10%). Furthermore, we identified glycosyl transferase, glutathione S-transferase, laccase, cytochrome P450 monooxygenase, peroxidase, and other proteins closely related to the degradation process. CONCLUSIONS Mycorrhizal Medicago showed improved atrazine degradation within the culturing medium and increased atrazine enrichment in the roots and stems. Additionally, AMF increased the plant root response to atrazine, with relevant enzymes up regulated and toxic effects alleviated. Overall, the findings of this study show that AMF played an important role in easing atrazine stress in plants and contributed to atrazine remediation and further contributed to the understanding of the molecular mechanism associated with atrazine stresses and potential mycorrhizal contributions in M.sativa.
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Affiliation(s)
- Xin Sui
- Heilongjiang Provincial Key Laboratory of Ecologial Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
- Engineering Research Center of Agricultural microbiology Technology, Ministry of Education, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
| | - Qi Wu
- Heilongjiang Provincial Key Laboratory of Ecologial Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
- Engineering Research Center of Agricultural microbiology Technology, Ministry of Education, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
| | - Wei Chang
- Heilongjiang Provincial Key Laboratory of Ecologial Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
- Engineering Research Center of Agricultural microbiology Technology, Ministry of Education, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
| | - Xiaoxu Fan
- Heilongjiang Provincial Key Laboratory of Ecologial Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
- Engineering Research Center of Agricultural microbiology Technology, Ministry of Education, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
| | - Fuqiang Song
- Heilongjiang Provincial Key Laboratory of Ecologial Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
- Engineering Research Center of Agricultural microbiology Technology, Ministry of Education, Heilongjiang University, XueFu Road No.74, Nangang district, Harbin City, 150080 People’s Republic of China
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Hussain I, Aleti G, Naidu R, Puschenreiter M, Mahmood Q, Rahman MM, Wang F, Shaheen S, Syed JH, Reichenauer TG. Microbe and plant assisted-remediation of organic xenobiotics and its enhancement by genetically modified organisms and recombinant technology: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 628-629:1582-1599. [PMID: 30045575 DOI: 10.1016/j.scitotenv.2018.02.037] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 01/31/2018] [Accepted: 02/03/2018] [Indexed: 05/18/2023]
Abstract
Environmental problems such as the deterioration of groundwater quality, soil degradation and various threats to human, animal and ecosystem health are closely related to the presence of high concentrations of organic xenobiotics in the environment. Employing appropriate technologies to remediate contaminated soils is crucial due to the site-specificity of most remediation methods. The limitations of conventional remediation technologies include poor environmental compatibility, high cost of implementation and poor public acceptability. This raises the call to employ biological methods for remediation. Bioremediation and microbe-assisted bioremediation (phytoremediation) offer many ecological and cost-associated benefits. The overall efficiency and performance of bio- and phytoremediation approaches can be enhanced by genetically modified microbes and plants. Moreover, phytoremediation can also be stimulated by suitable plant-microbe partnerships, i.e. plant-endophytic or plant-rhizospheric associations. Synergistic interactions between recombinant bacteria and genetically modified plants can further enhance the restoration of environments impacted by organic pollutants. Nevertheless, releasing genetically modified microbes and plants into the environment does pose potential risks. These can be minimized by adopting environmental biotechnological techniques and guidelines provided by environmental protection agencies and other regulatory frameworks. The current contribution provides a comprehensive overview on enhanced bioremediation and phytoremediation approaches using transgenic plants and microbes. It also sheds light on the mitigation of associated environmental risks.
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Affiliation(s)
- Imran Hussain
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria; Department of Molecular Systems Biology, Faculty of Life Sciences, University of Vienna, Austria
| | - Gajender Aleti
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Markus Puschenreiter
- Institute of Soil Research, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Qaisar Mahmood
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Fang Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Shahida Shaheen
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Jabir Hussain Syed
- Department of Meteorology, COMSATS Institute of Information Technology, Park Road Tarlai Kalan 45550, Islamabad, Pakistan; Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong.
| | - Thomas G Reichenauer
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria.
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Huang X, He J, Yan X, Hong Q, Chen K, He Q, Zhang L, Liu X, Chuang S, Li S, Jiang J. Microbial catabolism of chemical herbicides: Microbial resources, metabolic pathways and catabolic genes. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 143:272-297. [PMID: 29183604 DOI: 10.1016/j.pestbp.2016.11.010] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 11/21/2016] [Accepted: 11/23/2016] [Indexed: 06/07/2023]
Abstract
Chemical herbicides are widely used to control weeds and are frequently detected as contaminants in the environment. Due to their toxicity, the environmental fate of herbicides is of great concern. Microbial catabolism is considered the major pathway for the dissipation of herbicides in the environment. In recent decades, there have been an increasing number of reports on the catabolism of various herbicides by microorganisms. This review presents an overview of the recent advances in the microbial catabolism of various herbicides, including phenoxyacetic acid, chlorinated benzoic acid, diphenyl ether, tetra-substituted benzene, sulfonamide, imidazolinone, aryloxyphenoxypropionate, phenylurea, dinitroaniline, s-triazine, chloroacetanilide, organophosphorus, thiocarbamate, trazinone, triketone, pyrimidinylthiobenzoate, benzonitrile, isoxazole and bipyridinium herbicides. This review highlights the microbial resources that are capable of catabolizing these herbicides and the mechanisms involved in the catabolism. Furthermore, the application of herbicide-degrading strains to clean up herbicide-contaminated sites and the construction of genetically modified herbicide-resistant crops are discussed.
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Affiliation(s)
- Xing Huang
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Jian He
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Xin Yan
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Qing Hong
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Kai Chen
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Qin He
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Long Zhang
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Xiaowei Liu
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Shaochuang Chuang
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Shunpeng Li
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China
| | - Jiandong Jiang
- Department of Microbiology, Key Lab of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, 210095 Nanjing, People's Republic of China.
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Zhang JJ, Gao S, Xu JY, Lu YC, Lu FF, Ma LY, Su XN, Yang H. Degrading and Phytoextracting Atrazine Residues in Rice (Oryza sativa) and Growth Media Intensified by a Phase II Mechanism Modulator. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:11258-11268. [PMID: 28872855 DOI: 10.1021/acs.est.7b02346] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Atrazine (ATZ) residue in farmland is one of the environmental contaminants seriously affecting crop production and food safety. Understanding the regulatory mechanism for ATZ metabolism and degradation in plants is important to help reduce ATZ potential toxicity to both plants and human health. Here, we report our newly developed engineered rice overexpressing a novel Phase II metabolic enzyme glycosyltransfearse1 (ARGT1) responsible for transformation of ATZ residues in rice. Our results showed that transformed lines, when exposed to environmentally realistic ATZ concentration (0.2-0.8 mg/L), displayed significantly high tolerance, with 8-27% biomass and 36-56% chlorophyll content higher, but 37-69% plasma membrane injury lower than untransformed lines. Such results were well confirmed by ARGT1 expression in Arabidopsis. ARGT1-transformed rice took up 1.6-2.7 fold ATZ from its growth medium compared to its wild type (WT) and accumulated ATZ 10%-43% less than that of WT. A long-term study also showed that ATZ in the grains of ARGT1-transformed rice was reduced by 30-40% compared to WT. The ATZ-degraded products were characterized by UPLC/Q-TOF-MS/MS. More ATZ metabolites and conjugates accumulated in ARGT1-transformed rice than in WT. Eight ATZ metabolites for Phase I reaction and 10 conjugates for Phase II reaction in rice were identified, with three ATZ-glycosylated conjugates that have never been reported before. These results indicate that ARGT1 expression can facilitate uptake of ATZ from environment and metabolism in rice plants.
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Affiliation(s)
- Jing Jing Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University , Nanjing 210095, China
| | - Shuai Gao
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University , Nanjing 210095, China
- College of Life Sciences, Fudan University , Shanghai, 200433 China
| | - Jiang Yan Xu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
| | - Yi Chen Lu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
- College of Food Science and Light Industry, Nanjing Tech University , Nanjing 211800, China
| | - Feng Fan Lu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
| | - Li Ya Ma
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
| | - Xiang Ning Su
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University , Nanjing 210095, China
| | - Hong Yang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University , Nanjing 210095, China
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Ibañez S, Talano M, Ontañon O, Suman J, Medina MI, Macek T, Agostini E. Transgenic plants and hairy roots: exploiting the potential of plant species to remediate contaminants. N Biotechnol 2016; 33:625-635. [DOI: 10.1016/j.nbt.2015.11.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/20/2015] [Accepted: 11/25/2015] [Indexed: 01/16/2023]
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Kerchev P, De Smet B, Waszczak C, Messens J, Van Breusegem F. Redox Strategies for Crop Improvement. Antioxid Redox Signal 2015; 23:1186-205. [PMID: 26062101 DOI: 10.1089/ars.2014.6033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
SIGNIFICANCE Recently, the agro-biotech industry has been driven by overcoming the limitations imposed by fluctuating environmental stress conditions on crop productivity. A common theme among (a)biotic stresses is the perturbation of the redox homeostasis. RECENT ADVANCES As a strategy to engineer stress-tolerant crops, many approaches have been centered on restricting the negative impact of reactive oxygen species (ROS) accumulation. CRITICAL ISSUES In this study, we discuss the scientific background of the existing redox-based strategies to improve crop performance and quality. In this respect, a special focus goes to summarizing the current patent landscape because this aspect is very often ignored, despite constituting the forefront of applied research. FUTURE DIRECTIONS The current increased understanding of ROS acting as signaling molecules has opened new avenues to exploit redox biology for crop improvement required for sustainable food security.
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Affiliation(s)
- Pavel Kerchev
- 1 Department of Plant Systems Biology , VIB, Ghent, Belgium .,2 Department of Plant Biotechnology and Bioinformatics, Ghent University , Ghent, Belgium
| | - Barbara De Smet
- 1 Department of Plant Systems Biology , VIB, Ghent, Belgium .,2 Department of Plant Biotechnology and Bioinformatics, Ghent University , Ghent, Belgium .,3 Structural Biology Research Center , VIB, Brussels, Belgium .,4 Brussels Center for Redox Biology , Brussel, Belgium .,5 Structural Biology Brussels, Vrije Universiteit Brussel , Brussel, Belgium
| | - Cezary Waszczak
- 1 Department of Plant Systems Biology , VIB, Ghent, Belgium .,2 Department of Plant Biotechnology and Bioinformatics, Ghent University , Ghent, Belgium .,3 Structural Biology Research Center , VIB, Brussels, Belgium .,4 Brussels Center for Redox Biology , Brussel, Belgium .,5 Structural Biology Brussels, Vrije Universiteit Brussel , Brussel, Belgium
| | - Joris Messens
- 3 Structural Biology Research Center , VIB, Brussels, Belgium .,4 Brussels Center for Redox Biology , Brussel, Belgium .,5 Structural Biology Brussels, Vrije Universiteit Brussel , Brussel, Belgium
| | - Frank Van Breusegem
- 1 Department of Plant Systems Biology , VIB, Ghent, Belgium .,2 Department of Plant Biotechnology and Bioinformatics, Ghent University , Ghent, Belgium
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16
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Wang Y, Ren H, Pan H, Liu J, Zhang L. Enhanced tolerance and remediation to mixed contaminates of PCBs and 2,4-DCP by transgenic alfalfa plants expressing the 2,3-dihydroxybiphenyl-1,2-dioxygenase. JOURNAL OF HAZARDOUS MATERIALS 2015; 286:269-275. [PMID: 25590820 DOI: 10.1016/j.jhazmat.2014.12.049] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 11/14/2014] [Accepted: 12/24/2014] [Indexed: 06/04/2023]
Abstract
Polychlorinated biphenyls (PCBs) and 2,4-dichlorophenol (2,4-DCP) generally led to mixed contamination of soils as a result of commercial and agricultural activities. Their accumulation in the environment poses great risks to human and animal health. Therefore, the effective strategies for disposal of these pollutants are urgently needed. In this study, genetic engineering to enhance PCBs/2,4-DCP phytoremediation is a focus. We cloned the 2,3-dihydroxybiphenyl-1,2-dioxygenase (BphC.B) from a soil metagenomic library, which is the key enzyme of aerobic catabolism of a variety of aromatic compounds, and then it was expressed in alfalfa driven by CaMV 35S promoter using Agrobacterium-mediated transformation. Transgenic line BB11 was selected out through PCR, Western blot analysis and enzyme activity assays. Its disposal and tolerance to both PCBs and 2,4-DCP were examined. The tolerance capability of transgenic line BB11 towards complex contaminants of PCBs/2,4-DCP significantly increased compared with non-transgenic plants. Strong dissipation of PCBs and high removal efficiency of 2,4-DCP were exhibited in a short time. It was confirmed expressing BphC.B would be a feasible strategy to help achieving phytoremediation in mixed contaminated soils with PCBs and 2,4-DCP.
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Affiliation(s)
- Yan Wang
- Key Laboratory of Groud Water Resources and Environment of the Ministry of Education, College of Environment and Resources, Jilin University, 2519 Jiefang Road, Changchun, Jilin 130021, People's Republic of China; College of Plant Sciences, Jilin University, 5333 Xi'an Road, Changchun, Jilin 130062, People's Republic of China
| | - Hejun Ren
- Key Laboratory of Groud Water Resources and Environment of the Ministry of Education, College of Environment and Resources, Jilin University, 2519 Jiefang Road, Changchun, Jilin 130021, People's Republic of China.
| | - Hongyu Pan
- College of Plant Sciences, Jilin University, 5333 Xi'an Road, Changchun, Jilin 130062, People's Republic of China
| | - Jinliang Liu
- College of Plant Sciences, Jilin University, 5333 Xi'an Road, Changchun, Jilin 130062, People's Republic of China
| | - Lanying Zhang
- Key Laboratory of Groud Water Resources and Environment of the Ministry of Education, College of Environment and Resources, Jilin University, 2519 Jiefang Road, Changchun, Jilin 130021, People's Republic of China
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17
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Vail AW, Wang P, Uefuji H, Samac DA, Vance CP, Wackett LP, Sadowsky MJ. Biodegradation of atrazine by three transgenic grasses and alfalfa expressing a modified bacterial atrazine chlorohydrolase gene. Transgenic Res 2014; 24:475-88. [DOI: 10.1007/s11248-014-9851-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 11/16/2014] [Indexed: 11/30/2022]
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18
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Zhang JJ, Lu YC, Yang H. Chemical modification and degradation of atrazine in Medicago sativa through multiple pathways. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9657-9668. [PMID: 25226578 DOI: 10.1021/jf503221c] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Atrazine is a member of the triazine herbicide family intensively used to control weeds for crop production. In this study, atrazine residues and its degraded products in alfalfa (Medicago sativa) were characterized using UPLC-TOF-MS/MS. Most of atrazine absorbed in plants was found as chemically modified derivatives like deisopropylated atrazine (DIA), dehydrogenated atrazine (DHA), or methylated atrazine (MEA), and some atrazine derivatives were conjugated through different functional groups such as sugar, glutathione, and amino acids. Interestingly, the specific conjugates DHA+hGSH (homoglutathione) and MEA-HCl+hGSH in alfalfa were detected. These results suggest that atrazine in alfalfa can be degraded through different pathways. The increased activities of glycosyltransferase and glutathione S-transferase were determined to support the atrazine degradation models. The outcome of the work uncovered the detailed mechanism for the residual atrazine accumulation and degradation in alfalfa and will help to evaluate whether the crop is suitable to be cultivated in the atrazine-polluted soil.
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Affiliation(s)
- Jing Jing Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University , Nanjing 210095, China
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Zhang L, Chen H, Li Y, Li Y, Wang S, Su J, Liu X, Chen D, Chen X. Evaluation of the agronomic performance of atrazine-tolerant transgenic japonica rice parental lines for utilization in hybrid seed production. PLoS One 2014; 9:e108569. [PMID: 25275554 PMCID: PMC4183513 DOI: 10.1371/journal.pone.0108569] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 09/01/2014] [Indexed: 11/18/2022] Open
Abstract
Currently, the purity of hybrid seed is a crucial limiting factor when developing hybrid japonica rice (Oryza sativa L.). To chemically control hybrid seed purity, we transferred an improved atrazine chlorohydrolase gene (atzA) from Pseudomonas ADP into hybrid japonica parental lines (two maintainers, one restorer), and Nipponbare, by using Agrobacterium-mediated transformation. We subsequently selected several transgenic lines from each genotype by using PCR, RT-PCR, and germination analysis. In the presence of the investigated atrazine concentrations, particularly 150 µM atrazine, almost all of the transgenic lines produced significantly larger seedlings, with similar or higher germination percentages, than did the respective controls. Although the seedlings of transgenic lines were taller and gained more root biomass compared to the respective control plants, their growth was nevertheless inhibited by atrazine treatment compared to that without treatment. When grown in soil containing 2 mg/kg or 5 mg/kg atrazine, the transgenic lines were taller, and had higher total chlorophyll contents than did the respective controls; moreover, three of the strongest transgenic lines completely recovered after 45 days of growth. After treatment with 2 mg/kg or 5 mg/kg of atrazine, the atrazine residue remaining in the soil was 2.9–7.0% or 0.8–8.7% respectively, for transgenic lines, and 44.0–59.2% or 28.1–30.8%, respectively, for control plants. Spraying plants at the vegetative growth stage with 0.15% atrazine effectively killed control plants, but not transgenic lines. Our results indicate that transgenic atzA rice plants show tolerance to atrazine, and may be used as parental lines in future hybrid seed production.
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Affiliation(s)
- Luhua Zhang
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Haiwei Chen
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Yanlan Li
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | - Yanan Li
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, China
| | | | - Jinping Su
- Tianjin Crop Research Institute, Tianjin, China
| | - Xuejun Liu
- Tianjin Crop Research Institute, Tianjin, China
| | - Defu Chen
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, China
- * E-mail: (DC); (XC)
| | - Xiwen Chen
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, China
- * E-mail: (DC); (XC)
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20
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Wang Y, Li X, Chen X, Chen D. Directed evolution and characterization of atrazine chlorohydrolase variants with enhanced activity. BIOCHEMISTRY (MOSCOW) 2013; 78:1104-11. [DOI: 10.1134/s0006297913100040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Zhang Y, Liu J, Zhou Y, Gong T, Wang J, Ge Y. Enhanced phytoremediation of mixed heavy metal (mercury)-organic pollutants (trichloroethylene) with transgenic alfalfa co-expressing glutathione S-transferase and human P450 2E1. JOURNAL OF HAZARDOUS MATERIALS 2013; 260:1100-1107. [PMID: 23933506 DOI: 10.1016/j.jhazmat.2013.06.065] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/22/2013] [Accepted: 06/25/2013] [Indexed: 06/02/2023]
Abstract
Soil contamination is a global environmental problem and many efforts have been made to find efficient remediation methods over the last decade. Moreover, remediation of mixed contaminated soils are more difficult. In the present study, transgenic alfalfa plants pKHCG co-expressing glutathione S-transferase (GST) and human P450 2E1 (CYP2E1) genes were used for phytoremediation of mixed mercury (Hg)-trichloroethylene (TCE) contaminants. Simultaneous expression of GST and CYP2E1 may produce a significant synergistic effect, and leads to improved resistance and accumulation to heavy metal-organic complex contaminants. Based on the tolerance and accumulation assays, pKHCG transgenic plants were more resistant to Hg/TCE complex pollutants and many folds higher in Hg/TCE-accumulation than the non-transgenic control plants in mixed contaminated soil. It is confirmed that GST and CYP2E1 co-expression may be a useful strategy to help achieve mixed heavy metal-organic pollutants phytoremediation.
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Affiliation(s)
- Yuanyuan Zhang
- Department of Pharmaceutics, Qingdao University of Science and Technology, 53 Zhengzhou Road, PO Box 70, Qingdao 266042, China
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Udiković-Kolić N, Scott C, Martin-Laurent F. Evolution of atrazine-degrading capabilities in the environment. Appl Microbiol Biotechnol 2012; 96:1175-89. [DOI: 10.1007/s00253-012-4495-0] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 10/02/2012] [Accepted: 10/03/2012] [Indexed: 11/30/2022]
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Cloning of a novel arylamidase gene from Paracoccus sp. strain FLN-7 that hydrolyzes amide pesticides. Appl Environ Microbiol 2012; 78:4848-55. [PMID: 22544249 DOI: 10.1128/aem.00320-12] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The bacterial isolate Paracoccus sp. strain FLN-7 hydrolyzes amide pesticides such as diflubenzuron, propanil, chlorpropham, and dimethoate through amide bond cleavage. A gene, ampA, encoding a novel arylamidase that catalyzes the amide bond cleavage in the amide pesticides was cloned from the strain. ampA contains a 1,395-bp open reading frame that encodes a 465-amino-acid protein. AmpA was expressed in Escherichia coli BL21 and homogenously purified using Ni-nitrilotriacetic acid affinity chromatography. AmpA is a homodimer with an isoelectric point of 5.4. AmpA displays maximum enzymatic activity at 40°C and a pH of between 7.5 and 8.0, and it is very stable at pHs ranging from 5.5 to 10.0 and at temperatures up to 50°C. AmpA efficiently hydrolyzes a variety of secondary amine compounds such as propanil, 4-acetaminophenol, propham, chlorpropham, dimethoate, and omethoate. The most suitable substrate is propanil, with K(m) and k(cat) values of 29.5 μM and 49.2 s(-1), respectively. The benzoylurea insecticides (diflubenzuron and hexaflumuron) are also hydrolyzed but at low efficiencies. No cofactor is needed for the hydrolysis activity. AmpA shares low identities with reported arylamidases (less than 23%), forms a distinct lineage from closely related arylamidases in the phylogenetic tree, and has different biochemical characteristics and catalytic kinetics with related arylamidases. The results in the present study suggest that AmpA is a good candidate for the study of the mechanism for amide pesticide hydrolysis, genetic engineering of amide herbicide-resistant crops, and bioremediation of amide pesticide-contaminated environments.
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Reátegui E, Reynolds E, Kasinkas L, Aggarwal A, Sadowsky MJ, Aksan A, Wackett LP. Silica gel-encapsulated AtzA biocatalyst for atrazine biodegradation. Appl Microbiol Biotechnol 2012; 96:231-40. [DOI: 10.1007/s00253-011-3821-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 11/29/2011] [Accepted: 12/05/2011] [Indexed: 11/30/2022]
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25
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Poonam, Kumari P, Ahmad S, Chauhan SMS. Reductive dechlorination of atrazine using sodium-borohydride catalysed by cobalt(II) phthalocyanines. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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26
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Zhang Y, Liu J. Transgenic alfalfa plants co-expressing glutathione S-transferase (GST) and human CYP2E1 show enhanced resistance to mixed contaminates of heavy metals and organic pollutants. JOURNAL OF HAZARDOUS MATERIALS 2011; 189:357-362. [PMID: 21411224 DOI: 10.1016/j.jhazmat.2011.02.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 02/12/2011] [Accepted: 02/15/2011] [Indexed: 05/30/2023]
Abstract
Transgenic alfalfa plants simultaneously expressing human CYP2E1 and glutathione S-transferase (GST) were generated from hypocotyl segments by the use of an Agrobacterium transformation system for the phytoremediation of the mixed contaminated soil with heavy metals and organic pollutants. The transgenic alfalfa plants were screened by a combination of kanamycin resistance, PCR, GST and CYP2E1 activity and Western blot analysis. The capabilities of mixed contaminants (heavy metals-organic compounds) resistance of pKHCG transgenic alfalfa plants became markedly increased compared with the transgenic alfalfa plants expressing single gene (GST or CYP2E1) and the non-transgenic control plants. The pKHCG alfalfa plants exhibited strong resistance towards the mixtures of cadmium (Cd) and trichloroethylene (TCE) that were metabolized by the introduced GST and CYP2E1 in combination. Our results show that the pKHCG transgenic alfalfa plants have good potential for phytoremediation because they have cross-tolerance towards the complex contaminants of heavy metals and organic pollutants. Therefore, these transgenic alfalfa plants co-expressing GST and human P450 CDNAs may have a great potential for phytoremediation of mixed environmental contaminants.
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Affiliation(s)
- Yuanyuan Zhang
- Department of Pharmaceutics, Qingdao University of Science and Technology, 53 Zhengzhou Road, PO Box 70, Qingdao 266042, China
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Edwards R, Dixon DP, Cummins I, Brazier-Hicks M, Skipsey M. New Perspectives on the Metabolism and Detoxification of Synthetic Compounds in Plants. PLANT ECOPHYSIOLOGY 2011. [DOI: 10.1007/978-90-481-9852-8_7] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Scott C, Begley C, Taylor MJ, Pandey G, Momiroski V, French N, Brearley C, Kotsonis SE, Selleck MJ, Carino FA, Bajet CM, Clarke C, Oakeshott JG, Russell RJ. Free-Enzyme Bioremediation of Pesticides. ACS SYMPOSIUM SERIES 2011. [DOI: 10.1021/bk-2011-1075.ch011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Colin Scott
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Cameron Begley
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Matthew J. Taylor
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Gunjan Pandey
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Vinko Momiroski
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Nigel French
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Clint Brearley
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Steve E. Kotsonis
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Michael J. Selleck
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Flerida A. Carino
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Cristina M. Bajet
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Craig Clarke
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - John G. Oakeshott
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
| | - Robyn J. Russell
- CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia
- Orica Australia Pty Ltd., 1 Nicholson Street, Melbourne Victoria 3000, Australia
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101, Philippines
- Pesticide Toxicology and Chemistry Laboratory, National Crop Protection Center, University of the Philippines, Los Banos, Laguna 4031, Philippines
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Wang H, Chen X, Xing X, Hao X, Chen D. Transgenic tobacco plants expressing atzA exhibit resistance and strong ability to degrade atrazine. PLANT CELL REPORTS 2010; 29:1391-9. [PMID: 20960204 DOI: 10.1007/s00299-010-0924-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2010] [Revised: 08/11/2010] [Accepted: 09/12/2010] [Indexed: 05/30/2023]
Abstract
Atrazine chlorohydrolase (AtzA) catalyzes hydrolytic dechlorination and can be used in detoxification of atrazine, a herbicide widely employed in the control of broadleaf weeds. In this study, to investigate the potential use of transgenic tobacco plants for phytoremediation of atrazine, atzA genes from Pseudomonas sp. strain ADP and Arthrobacter strain AD1 were transferred into tobacco. Three and four transgenic lines, expressing atzA-ADP and atzA-AD1, respectively, were produced by Agrobacterium-mediated transformation. Molecular characterization including PCR, RT-PCR and Southern blot revealed that atzA was inserted into the tobacco genome and stably inherited by and expressed in the progenies. Seeds of the T(1) transgenic lines had a higher germination percentage and longer roots than the untransformed plants in the presence of 40-150 mg/l atrazine. The T(2) transgenic lines grew taller, gained more dry biomass, and had higher total chlorophyll content than the untransformed plants after growing in soil containing 1 or 2 mg/kg atrazine for 90 days. No atrazine residue remained in the soil in which the T(2) transgenic lines were grown (except 401), while, in the case of the untransformed plants, 0.91 mg (81.3%) and 1.66 mg (74.1%) of the atrazine still remained in the soil containing 1 and 2 mg/kg of atrazine, respectively, indicating that the transgenic lines could degrade atrazine effectively. The transgenic tobacco lines developed could be useful for phytoremediation of atrazine-contaminated soil and water.
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Affiliation(s)
- Huizhuan Wang
- Laboratory of Molecular Genetics, College of Life Sciences, Nankai University, Tianjin, People's Republic of China
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Scott C, Lewis SE, Milla R, Taylor MC, Rodgers AJW, Dumsday G, Brodie JE, Oakeshott JG, Russell RJ. A free-enzyme catalyst for the bioremediation of environmental atrazine contamination. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2010; 91:2075-2078. [PMID: 20570036 DOI: 10.1016/j.jenvman.2010.05.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 04/28/2010] [Accepted: 05/06/2010] [Indexed: 05/29/2023]
Abstract
Herbicide contamination from agriculture is a major issue worldwide, and has been identified as a threat to freshwater and marine environments in the Great Barrier Reef World Heritage Area in Australia. The triazine herbicides are of particular concern because of potential adverse effects, both on photosynthetic organisms and upon vertebrate development. To date a number of bioremediation strategies have been proposed for triazine herbicides, but are unlikely to be implemented due to their reliance upon the release of genetically modified organisms. We propose an alternative strategy using a free-enzyme bioremediant, which is unconstrained by the issues surrounding the use of live organisms. Here we report an initial field trial with an enzyme-based product, demonstrating that the technology is technically capable of remediating water bodies contaminated with the most common triazine herbicide, atrazine.
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Affiliation(s)
- Colin Scott
- CSIRO Division of Entomology, GPO Box 1700, Canberra, ACT 2601, Australia.
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Sinha J, Reyes SJ, Gallivan JP. Reprogramming bacteria to seek and destroy an herbicide. Nat Chem Biol 2010; 6:464-70. [PMID: 20453864 PMCID: PMC2873063 DOI: 10.1038/nchembio.369] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2009] [Accepted: 04/06/2010] [Indexed: 12/26/2022]
Abstract
A major goal of synthetic biology is to reprogram cells to perform complex tasks. Here we show how a combination of in vitro and in vivo selection rapidly identifies a synthetic riboswitch that activates protein translation in response to the herbicide atrazine. We further demonstrate that this riboswitch can reprogram bacteria to migrate in the presence of atrazine. Finally, we show that incorporating a gene from an atrazine catabolic pathway allows these cells to seek and destroy atrazine.
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Affiliation(s)
- Joy Sinha
- Department of Chemistry and Center for Fundamental and Applied Molecular Evolution, Emory University, Atlanta, Georgia, USA
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Abhilash P, Jamil S, Singh N. Transgenic plants for enhanced biodegradation and phytoremediation of organic xenobiotics. Biotechnol Adv 2009; 27:474-88. [DOI: 10.1016/j.biotechadv.2009.04.002] [Citation(s) in RCA: 236] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 03/26/2009] [Accepted: 04/03/2009] [Indexed: 11/28/2022]
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Scott C, Jackson CJ, Coppin CW, Mourant RG, Hilton ME, Sutherland TD, Russell RJ, Oakeshott JG. Catalytic improvement and evolution of atrazine chlorohydrolase. Appl Environ Microbiol 2009; 75:2184-91. [PMID: 19201959 PMCID: PMC2663207 DOI: 10.1128/aem.02634-08] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 01/31/2009] [Indexed: 11/20/2022] Open
Abstract
The atrazine chlorohydrolase AtzA has evolved within the past 50 years to catalyze the hydrolytic dechlorination of the herbicide atrazine. It is of wide research interest for two reasons: first, catalytic improvement of the enzyme would facilitate its application in bioremediation, and second, because of its recent evolution, it presents a rare opportunity to examine the early stages in the acquisition of new catalytic activities. Using a structural model of the AtzA-atrazine complex, a region of the substrate-binding pocket was targeted for combinatorial randomization. Identification of improved variants through this process informed the construction of a variant AtzA enzyme with 20-fold improvement in its k(cat)/K(m) value compared with that of the wild-type enzyme. The reduction in K(m) observed in the AtzA variants has allowed the full kinetic profile for the AtzA-catalyzed dechlorination of atrazine to be determined for the first time, revealing the hitherto-unreported substrate cooperativity in AtzA. Since substrate cooperativity is common among deaminases, which are the closest structural homologs of AtzA, it is possible that this phenomenon is a remnant of the catalytic activity of the evolutionary progenitor of AtzA. A catalytic mechanism that suggests a plausible mechanistic route for the evolution of dechlorinase activity in AtzA from an ancestral deaminase is proposed.
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Affiliation(s)
- Colin Scott
- CSIRO Entomology, G.P.O. Box 1700, Canberra, ACT 2601, Australia.
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35
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Kawahigashi H. Transgenic plants for phytoremediation of herbicides. Curr Opin Biotechnol 2009; 20:225-30. [PMID: 19269160 DOI: 10.1016/j.copbio.2009.01.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 01/23/2009] [Accepted: 01/30/2009] [Indexed: 10/21/2022]
Abstract
Herbicides are economically important, but the non-point pollution that they cause may disrupt the surrounding environment. Phytoremediation of herbicides has been well studied using conventional plants. Transgenic plants produced for metabolizing herbicides and long-persisting pollutants can be used for phytoremediation of foreign chemicals in contaminated soil and water. The genes involved in the metabolism of chemical compounds can be isolated from various organisms, including bacteria, fungi, plants, and animals, and these genes are then introduced into candidate plants. Transgenic plants expressing mammalian P450s and the other enzymes showed tolerance and phytoremediation activity toward target herbicides. Transgenic plants can also enhance the absorption and detoxification of pollutants, thereby aiding the phytoremediation of contaminated environments.
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Affiliation(s)
- Hiroyuki Kawahigashi
- Plant Genome Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan.
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Obtainment of atzA-Transgenic Tobacco Plants and Analysis of Their Phytoremediation Capability. ZUOWU XUEBAO 2008. [DOI: 10.3724/sp.j.1006.2008.00783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Scott C, Pandey G, Hartley CJ, Jackson CJ, Cheesman MJ, Taylor MC, Pandey R, Khurana JL, Teese M, Coppin CW, Weir KM, Jain RK, Lal R, Russell RJ, Oakeshott JG. The enzymatic basis for pesticide bioremediation. Indian J Microbiol 2008; 48:65-79. [PMID: 23100701 DOI: 10.1007/s12088-008-0007-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Revised: 01/07/2008] [Accepted: 01/18/2008] [Indexed: 11/26/2022] Open
Abstract
Enzymes are central to the biology of many pesticides, influencing their modes of action, environmental fates and mechanisms of target species resistance. Since the introduction of synthetic xenobiotic pesticides, enzymes responsible for pesticide turnover have evolved rapidly, in both the target organisms and incidentally exposed biota. Such enzymes are a source of significant biotechnological potential and form the basis of several bioremediation strategies intended to reduce the environmental impacts of pesticide residues. This review describes examples of enzymes possessing the major activities employed in the bioremediation of pesticide residues, and some of the strategies by which they are employed. In addition, several examples of specific achievements in enzyme engineering are considered, highlighting the growing trend in tailoring enzymatic activity to a specific biotechnologically relevant function.
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Affiliation(s)
- Colin Scott
- CSIRO Entomology, GPO Box 1700, Canberra, ACT 2601 Australia
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Wang X, Wu N, Guo J, Chu X, Tian J, Yao B, Fan Y. Phytodegradation of organophosphorus compounds by transgenic plants expressing a bacterial organophosphorus hydrolase. Biochem Biophys Res Commun 2008; 365:453-8. [PMID: 17996731 DOI: 10.1016/j.bbrc.2007.10.193] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Accepted: 10/30/2007] [Indexed: 11/18/2022]
Abstract
Organophosphorus (OP) compounds are widely used as pesticides in agriculture but cause broad-area environmental pollution. In this work, we have expressed a bacterial organophosphorus hydrolase (OPH) gene in tobacco plants. An assay of enzyme activity showed that transgenic plants could secrete OPH into the growth medium. The transgenic plants were resistant to methyl parathion (Mep), an OP pesticide, as evidenced by a toxicity test showing that the transgenic plants produced greater shoot and root biomass than did the wild-type plants. Furthermore, at 0.02% (v/v) Mep, the transgenic plants degraded more than 99% of Mep after 14 days of growth. Our work indicates that transgenic plants expressing an OPH gene may provide a new strategy for decontaminating OP pollutants.
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Affiliation(s)
- Xiaoxue Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
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Eapen S, Singh S, D'Souza SF. Advances in development of transgenic plants for remediation of xenobiotic pollutants. Biotechnol Adv 2007; 25:442-51. [PMID: 17553651 DOI: 10.1016/j.biotechadv.2007.05.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2007] [Revised: 05/04/2007] [Accepted: 05/04/2007] [Indexed: 10/23/2022]
Abstract
Phytoremediation-the use of plants for cleaning up of xenobiotic compounds-has received much attention in the last few years and development of transgenic plants tailored for remediation will further enhance their potential. Although plants have the inherent ability to detoxify some xenobiotic pollutants, they generally lack the catabolic pathway for complete degradation/mineralization of these compounds compared to microorganisms. Hence, transfer of genes involved in xenobiotic degradation from microbes/other eukaryotes to plants will further enhance their potential for remediation of these dangerous groups of compounds. Transgenic plants with enhanced potential for detoxification of xenobiotics such as trichloro ethylene, pentachlorophenol, trinitro toluene, glycerol trinitrate, atrazine, ethylene dibromide, metolachlor and hexahydro-1,3,5-trinitro-1,3,5-triazine are a few successful examples of utilization of transgenic technology. As more genes involved in xenobiotic metabolism in microorganisms/eukaryotes are discovered, it will lead to development of novel transgenic plants with improved potential for degradation of recalcitrant contaminants. Selection of suitable candidate plants, field testing and risk assessment are important considerations to be taken into account while developing transgenic plants for phytoremediation of this group of pollutants. Taking advantage of the advances in biotechnology and 'omic' technologies, development of novel transgenic plants for efficient phytoremediation of xenobiotic pollutants, field testing and commercialization will soon become a reality.
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Affiliation(s)
- Susan Eapen
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai-400085, India.
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Sulmon C, Gouesbet G, Binet F, Martin-Laurent F, El Amrani A, Couée I. Sucrose amendment enhances phytoaccumulation of the herbicide atrazine in Arabidopsis thaliana. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2007; 145:507-15. [PMID: 16769161 DOI: 10.1016/j.envpol.2006.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2006] [Revised: 04/14/2006] [Accepted: 04/19/2006] [Indexed: 05/10/2023]
Abstract
Growth in the presence of sucrose was shown to confer to Arabidopsis thaliana (thale cress or mustard weed) seedlings, under conditions of in vitro culture, a high level of tolerance to the herbicide atrazine and to other photosynthesis inhibitors. This tolerance was associated with root-to-shoot transfer and accumulation of atrazine in shoots, which resulted in significant decrease of herbicide levels in the growth medium. In soil microcosms, application of exogenous sucrose was found to confer tolerance and capacity to accumulate atrazine in Arabidopsis thaliana plants grown on atrazine-contaminated soil, and resulted in enhanced decontamination of the soil. Application of sucrose to plants grown on herbicide-polluted soil, which increases plant tolerance and xenobiotic absorption, thus appears to be potentially useful for phytoremediation.
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Affiliation(s)
- Cécile Sulmon
- UMR 6553 ECOBIO, CNRS, Université de Rennes 1, Campus de Beaulieu, bâtiment 14A, F-35042 Rennes Cedex, France
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Tesfaye M, Silverstein KAT, Bucciarelli B, Samac DA, Vance CP. The Affymetrix Medicago GeneChip ® array is applicable for transcript analysis of alfalfa (Medicago sativa). FUNCTIONAL PLANT BIOLOGY : FPB 2006; 33:783-788. [PMID: 32689289 DOI: 10.1071/fp06065] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2006] [Accepted: 04/28/2006] [Indexed: 06/11/2023]
Abstract
The recently released Affymetrix GeneChip® Medicago Genome Array contains approximately 52 700 probe sets representing genes in both the model legume Medicago truncatula Gaertn. and the closely related crop species Medicago sativa L. (alfalfa). We evaluated the utility of the Medicago GeneChip® for monitoring genome-wide expression of M. truncatula and alfalfa seedlings grown to the first trifoliate leaf stage. We found that approximately 40-54% of the Medicago probes were detected in leaf or root samples of alfalfa or M. truncatula. Approximately 45-59% of the detected Medicago probes were called 'present' in all replicate GeneChips of Medicago species, indicating a considerable overlap in the number and type of Medicago probes detected between root and leaf organs. Nevertheless, gene expression differences between roots and leaf organs accounted for approximately 17% of the total variation, regardless of the Medicago species from which the samples were harvested. The result shows that the Medicago GeneChip® is applicable for transcript analysis for both alfalfa and M. truncatula.
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Affiliation(s)
- Mesfin Tesfaye
- Department of Plant Pathology, University of Minnesota, Saint Paul, MN 55108, USA
| | | | | | - Deborah A Samac
- Department of Plant Pathology, University of Minnesota, Saint Paul, MN 55108, USA
| | - Carroll P Vance
- Department of Agronomy and Plant Genetics, University of Minnesota, Saint Paul, MN 55108, USA
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