1
|
Jha A, Barsola B, Pathania D, Sonu, Raizada P, Thakur P, Singh P, Rustagi S, Khosla A, Chaudhary V. Nano-biogenic heavy metals adsorptive remediation for enhanced soil health and sustainable agricultural production. ENVIRONMENTAL RESEARCH 2024; 252:118926. [PMID: 38657848 DOI: 10.1016/j.envres.2024.118926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 04/04/2024] [Accepted: 04/11/2024] [Indexed: 04/26/2024]
Abstract
Hazardous heavy metal (HM) pollution constitutes a pervasive global challenge, posing substantial risks to ecosystems and human health. The exigency for expeditious detection, meticulous monitoring, and efficacious remediation of HM within ecosystems is indisputable. Soil contamination, stemming from a myriad of anthropogenic activities, emerges as a principal conduit for HM ingress into the food chain. Traditional soil remediation modalities for HM elimination, while effective are labor-intensive, susceptible to secondary contamination, and exhibit limited efficacy in regions characterized by low metal toxicity. In response to these exigencies, the eco-friendly paradigm of bioremediation has garnered prominence as a financially judicious and sustainable remedial strategy. This approach entails the utilization of hyperaccumulators, Genetically Modified Microorganisms (GMM), and advantageous microbes. The current review offers a comprehensive elucidation of cutting-edge phyto/microbe-based bioremediation techniques, with a specific emphasis on their amalgamation with nanotechnology. Accentuating their pivotal role in advancing sustainable agricultural practices, the review meticulously dissects the synergistic interplay between plants and microbes, underscoring their adeptness in HM remediation sans secondary contamination. Moreover, the review scrutinizes the challenges intrinsic to implementing bioremediation-nanotechnology interface techniques and propounds innovative resolutions. These discernments proffer auspicious trajectories for the future of agriculture. Through the environmentally conscientious marvels of phyto/microbe bioremediation, an optimistic outlook emerges for environmental preservation and the cultivation of a sustainable, salubrious planet via the conduit of cleaner agricultural production.
Collapse
Affiliation(s)
- Ayush Jha
- University Institute of Biotechnology, Chandigarh University, Gharuan, Punjab, 140413, India
| | - Bindiya Barsola
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India
| | - Diksha Pathania
- Department of Biosciences and Technology, MMEC, Maharishi Markandeshwar University, Mullana (Ambala), Haryana,133203, India
| | - Sonu
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India.
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Pankaj Thakur
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Sarvesh Rustagi
- School of Applied and Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, India
| | - Ajit Khosla
- Department of Applied Chemistry, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, 710126, PR China.
| | - Vishal Chaudhary
- Physics Department, Bhagini Nivedita College, University of Delhi, Delhi, India; Centre for Research Impact & Outcome, Chitkara University, Punjab, 140401, India.
| |
Collapse
|
2
|
Zhang D, Chu B, Yang Q, Zhang X, Fang Y, Liu G, Liang L, Guo Y, Yin Y, Cai Y, Jiang G. Degradation of organic mercury in high salt environments by a marine aerobic bacterium Alteromonas macleodii KD01. BIORESOURCE TECHNOLOGY 2024; 402:130831. [PMID: 38734262 DOI: 10.1016/j.biortech.2024.130831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
Mercury (Hg), particularly organic mercury, poses a global concern due to its pronounced toxicity and bioaccumulation. Bioremediation of organic mercury in high-salt wastewater faces challenges due to the growth limitations imposed by elevated Cl- and Na+ concentrations on microorganisms. In this study, an isolated marine bacterium Alteromonas macleodii KD01 was demonstrated to degrade methylmercury (MeHg) efficiently in seawater and then was applied to degrade organic mercury (MeHg, ethylmercury, and thimerosal) in simulated high-salt wastewater. Results showed that A. macleodii KD01 can rapidly degrade organic mercury (within 20 min) even at high concentrations (>10 ng/mL), volatilizing a portion of Hg from the wastewater. Further analysis revealed an increased transcription of organomercury lyase (merB) with rising organic mercury concentrations during the exposure process, suggesting the involvement of mer operon (merA and merB). These findings highlight A. macleodii KD01 as a promising candidate for addressing organic mercury pollution in high-salt wastewater.
Collapse
Affiliation(s)
- Dingxi Zhang
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bowei Chu
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingqing Yang
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoyan Zhang
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yingying Fang
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangliang Liu
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Lina Liang
- Beijing Zhongke PUYAN Science and Technology Co., Ltd, Beijing 100096, China
| | - Yingying Guo
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Yongguang Yin
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Yong Cai
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| |
Collapse
|
3
|
Thai TD, Lim W, Na D. Synthetic bacteria for the detection and bioremediation of heavy metals. Front Bioeng Biotechnol 2023; 11:1178680. [PMID: 37122866 PMCID: PMC10133563 DOI: 10.3389/fbioe.2023.1178680] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/04/2023] [Indexed: 05/02/2023] Open
Abstract
Toxic heavy metal accumulation is one of anthropogenic environmental pollutions, which poses risks to human health and ecological systems. Conventional heavy metal remediation approaches rely on expensive chemical and physical processes leading to the formation and release of other toxic waste products. Instead, microbial bioremediation has gained interest as a promising and cost-effective alternative to conventional methods, but the genetic complexity of microorganisms and the lack of appropriate genetic engineering technologies have impeded the development of bioremediating microorganisms. Recently, the emerging synthetic biology opened a new avenue for microbial bioremediation research and development by addressing the challenges and providing novel tools for constructing bacteria with enhanced capabilities: rapid detection and degradation of heavy metals while enhanced tolerance to toxic heavy metals. Moreover, synthetic biology also offers new technologies to meet biosafety regulations since genetically modified microorganisms may disrupt natural ecosystems. In this review, we introduce the use of microorganisms developed based on synthetic biology technologies for the detection and detoxification of heavy metals. Additionally, this review explores the technical strategies developed to overcome the biosafety requirements associated with the use of genetically modified microorganisms.
Collapse
Affiliation(s)
| | | | - Dokyun Na
- Department of Biomedical Engineering, Chung-Ang University, Seoul, Republic of Korea
| |
Collapse
|
4
|
Zhan W, Su Y, Chen X, Xiong H, Wei X, Huang X, Xiong Y. Aggregation-Induced Emission Luminogen-Encapsulated Fluorescent Hydrogels Enable Rapid and Sensitive Quantitative Detection of Mercury Ions. BIOSENSORS 2023; 13:bios13040421. [PMID: 37185496 PMCID: PMC10135736 DOI: 10.3390/bios13040421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 05/17/2023]
Abstract
Hg2+ contamination in sewage can accumulate in the human body through the food chains and cause health problems. Herein, a novel aggregation-induced emission luminogen (AIEgen)-encapsulated hydrogel probe for ultrasensitive detection of Hg2+ was developed by integrating hydrophobic AIEgens into hydrophilic hydrogels. The working mechanism of the multi-fluorophore AIEgens (TPE-RB) is based on the dark through-bond energy transfer strategy, by which the energy of the dark tetraphenylethene (TPE) derivative is completely transferred to the rhodamine-B derivative (RB), thus resulting in intense photoluminescent intensity. The spatial networks of the supporting hydrogels further provide fixing sites for the hydrophobic AIEgens to enlarge accessible reaction surface for hydrosoluble Hg2+, as well create a confined reaction space to facilitate the interaction between the AIEgens and the Hg2+. In addition, the abundant hydrogen bonds of hydrogels further promote the Hg2+ adsorption, which significantly improves the sensitivity. The integrated TPE-RB-encapsulated hydrogels (TR hydrogels) present excellent specificity, accuracy and precision in Hg2+ detection in real-world water samples, with a 4-fold higher sensitivity compared to that of pure AIEgen probes. The as-developed TR hydrogel-based chemosensor holds promising potential as a robust, fast and effective bifunctional platform for the sensitive detection of Hg2+.
Collapse
Affiliation(s)
- Wenchao Zhan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Yu Su
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xirui Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Hanpeng Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xiaxia Wei
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
- Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science and Technology, Nanchang University, Nanchang 330047, China
- Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, China
| |
Collapse
|
5
|
Nivetha N, Srivarshine B, Sowmya B, Rajendiran M, Saravanan P, Rajeshkannan R, Rajasimman M, Pham THT, Shanmugam V, Dragoi EN. A comprehensive review on bio-stimulation and bio-enhancement towards remediation of heavy metals degeneration. CHEMOSPHERE 2023; 312:137099. [PMID: 36372332 DOI: 10.1016/j.chemosphere.2022.137099] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/20/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Pollution of heavy metals is one of the risky contaminations that should be managed for all intents and purposes of general well-being concerns. The bioaccumulation of these heavy metals inside our bodies and pecking orders will influence our people in the future. Bioremediation is a bio-mechanism where residing organic entities use and reuse the squanders that are reused to one more form. This could be accomplished by taking advantage of the property of explicit biomolecules or biomass that is equipped for restricting by concentrating the necessary heavy metal particles. The microorganisms can't obliterate the metal yet can change it into a less harmful substance. In this unique circumstance, this review talks about the sources, poisonousness, impacts, and bioremediation strategies of five heavy metals: lead, mercury, arsenic, chromium, and manganese. The concentrations here are the ordinary strategies for bioremediation such as biosorption methods, the use of microbes, green growth, and organisms, etc. This review demonstrates the toxicity of heavy metal contamination degradation by biotransformation through bacterioremediation and biodegradation through mycoremediation.
Collapse
Affiliation(s)
- N Nivetha
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - B Srivarshine
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - B Sowmya
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | | | - Panchamoorthy Saravanan
- Department of Petrochemical Technology, UCE - BIT Campus, Anna University, Tiruchirappalli, Tamil Nadu, India
| | - R Rajeshkannan
- Department of Chemical Engineering, Annamalai University, Tamilnadu, India
| | - M Rajasimman
- Department of Chemical Engineering, Annamalai University, Tamilnadu, India
| | - Thi Hong Trang Pham
- Institute for Global Health Innovations, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Natural Science, Duy Tan University, Da Nang, 550000, Viet Nam
| | - VenkatKumar Shanmugam
- School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
| | - Elena-Niculina Dragoi
- "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University, Iasi, Bld Mangeron No 73, 700050, Romania
| |
Collapse
|
6
|
Cleophas FN, Zahari NZ, Murugayah P, Rahim SA, Mohd Yatim AN. Phytoremediation: A Novel Approach of Bast Fiber Plants (Hemp, Kenaf, Jute and Flax) for Heavy Metals Decontamination in Soil-Review. TOXICS 2022; 11:5. [PMID: 36668731 PMCID: PMC9864374 DOI: 10.3390/toxics11010005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/01/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Heavy metal pollution in the environment is a major concern for humans as it is non-biodegradable and can have a lot of effects on the environment, humans as well as plants. At present, a solution to this problem is suggested in terms of a new, innovative and eco-friendly technology known as phytoremediation. Bast fiber plants are typically non-edible crops that have a short life cycle. It is one of the significant crops that has attracted interest for many industrial uses because of its constant fiber supply and ease of maintenance. Due to its low maintenance requirements with minimum economic investment, bast fiber plants have been widely used in phytoremediation. Nevertheless, these plants have the ability to extract metals from the soil through their deep roots, combined with their commercial prospects, making them an ideal candidate as a profit-yielding crop for phytoremediation purposes. Therefore, a comprehensive review is needed for a better understanding of the morphology and phytoremediation mechanism of four commonly bast fiber plants, such as hemp (Cannabis sativa), kenaf (Hibiscus cannabinus), jute (Corchorus olitorius) and Flax (Linum usitatissimum). This review article summarizes the existing research on the phytoremediation potential of these plants grown in different toxic pollutants such as Lead (Pb), Cadmium (Cd) and Zinc (Zn). This work also discusses several aids including natural and chemical amendments to improve phytoremediation. The role of these amendments in the bioavailability of contaminants, their uptake, translocation and bioaccumulation, as well as their effect on plant growth and development, has been highlighted in this paper. This paper helps in identifying, comparing and addressing the recent achievements of bast fiber plants for the phytoremediation of heavy metals in contaminated soil.
Collapse
Affiliation(s)
- Fera Nony Cleophas
- Environmental Science Programme, Faculty of Science & Natural Resources, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
- Small Islands Research Center, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
| | - Nur Zaida Zahari
- Environmental Science Programme, Faculty of Science & Natural Resources, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
- Small Islands Research Center, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
| | - Pavitra Murugayah
- Environmental Science Programme, Faculty of Science & Natural Resources, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
| | - Sahibin Abd Rahim
- Environmental Science Programme, Faculty of Science & Natural Resources, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
| | - Ahmad Norazhar Mohd Yatim
- Environmental Science Programme, Faculty of Science & Natural Resources, Universiti Malaysia Sabah, UMS Road, Kota Kinabalu 88400, Sabah, Malaysia
| |
Collapse
|
7
|
Rani L, Srivastav AL, Kaushal J. Bioremediation: An effective approach of mercury removal from the aqueous solutions. CHEMOSPHERE 2021; 280:130654. [PMID: 34162069 DOI: 10.1016/j.chemosphere.2021.130654] [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: 10/28/2020] [Revised: 04/03/2021] [Accepted: 04/21/2021] [Indexed: 06/13/2023]
Abstract
Mercury (Hg(II)) is the 16th rarest element present in the earth's crust. Due to rapid industrialization and urban expansions, the mercury concentration has been elevated in the environment. Hg(II) contamination in the aqueous environment has become a great challenge for human beings. The main source of Hg(II) in the aqueous phase is untreated effluent industries (such as the paper industry). Hg(II) is non-biodegradable in nature and even its trace amount in an aqueous environment can pose chronic threats among the humans (damage to the central nervous system, respiratory system, and cardiovascular system, mutation of DNA), animals, and aquatic creatures. Therefore, the removal of mercury from aqueous solutions is an urgent need of the modern era. The conventional techniques such as ion exchange, precipitation, membrane filtrations are costly and also generate byproducts in the environment. Bioremediation is a sustainable, environmentally sound, and cost-effective technique to remove Hg(II) from the aqueous solutions. In this process, naturally occurring microorganisms are utilized to remove the Hg(II) from the aqueous solutions. Lentinus edodes, U. lactuca, and Typha domingensis are found to have great potential to remove mercury from water ranged from ~100 mg g-1 to 337 mg g-1.
Collapse
Affiliation(s)
- Lata Rani
- Centre for Water Sciences, Chitkara University Institute of Engineering & Technology, Chitkara University, Punjab, 140 417, India; School of Basic Sciences, Chitkara University, Himachal Pradesh, 174 103, India
| | - Arun Lal Srivastav
- Chitkara University School of Engineering and Technology, Chitkara University, Himachal Pradesh, 174 103, India.
| | - Jyotsna Kaushal
- Centre for Water Sciences, Chitkara University Institute of Engineering & Technology, Chitkara University, Punjab, 140 417, India
| |
Collapse
|
8
|
Hao X, Zhu J, Rensing C, Liu Y, Gao S, Chen W, Huang Q, Liu YR. Recent advances in exploring the heavy metal(loid) resistant microbiome. Comput Struct Biotechnol J 2020; 19:94-109. [PMID: 33425244 PMCID: PMC7771044 DOI: 10.1016/j.csbj.2020.12.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 12/03/2020] [Accepted: 12/05/2020] [Indexed: 12/18/2022] Open
Abstract
Heavy metal(loid)s exert selective pressure on microbial communities and evolution of metal resistance determinants. Despite increasing knowledge concerning the impact of metal pollution on microbial community and ecological function, it is still a challenge to identify a consistent pattern of microbial community composition along gradients of elevated metal(loid)s in natural environments. Further, our current knowledge of the microbial metal resistome at the community level has been lagging behind compared to the state-of-the-art genetic profiling of bacterial metal resistance mechanisms in a pure culture system. This review provides an overview of the core metal resistant microbiome, development of metal resistance strategies, and potential factors driving the diversity and distribution of metal resistance determinants in natural environments. The impacts of biotic factors regulating the bacterial metal resistome are highlighted. We finally discuss the advances in multiple technologies, research challenges, and future directions to better understand the interface of the environmental microbiome with the metal resistome. This review aims to highlight the diversity and wide distribution of heavy metal(loid)s and their corresponding resistance determinants, helping to better understand the resistance strategy at the community level.
Collapse
Affiliation(s)
- Xiuli Hao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- Corresponding authors at: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Jiaojiao Zhu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Christopher Rensing
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Ying Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Shenghan Gao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Wenli Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiaoyun Huang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
| | - Yu-Rong Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- Corresponding authors at: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
| |
Collapse
|
9
|
Fulke AB, Kotian A, Giripunje MD. Marine Microbial Response to Heavy Metals: Mechanism, Implications and Future Prospect. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 105:182-197. [PMID: 32596744 DOI: 10.1007/s00128-020-02923-9] [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: 03/12/2020] [Accepted: 06/21/2020] [Indexed: 06/11/2023]
Abstract
Growing levels of pollution in marine environment has been a matter of serious concern in recent years. Increased levels of heavy metals due to improper waste disposal has led to serious repercussions. This has increased occurrences of heavy metals in marine fauna. Marine microbes are large influencers of nutrient cycling and productivity in oceans. Marine bacteria show altered metabolism as a strategy against metal induced stress. Understanding these strategies used to avoid toxic effects of heavy metals can help in devising novel biotechnological applications for ocean clean-up. Using biological tools for remediation has advantages as it does not involve harmful chemicals and it shows greater flexibility to environmental fluctuations. This review provides a comprehensive insight on marine microbial response to heavy metals and sheds light on existing knowledge about and paves for new avenues in research for bioremediation strategies.
Collapse
Affiliation(s)
- Abhay B Fulke
- Microbiology Division, CSIR-National Institute of Oceanography (CSIR-NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai, Maharashtra, 400053, India.
| | - Atul Kotian
- Microbiology Division, CSIR-National Institute of Oceanography (CSIR-NIO), Regional Centre, Lokhandwala Road, Four Bungalows, Andheri (West), Mumbai, Maharashtra, 400053, India
| | | |
Collapse
|
10
|
Singh S, Kumar V. Mercury detoxification by absorption, mercuric ion reductase, and exopolysaccharides: a comprehensive study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:27181-27201. [PMID: 31001776 DOI: 10.1007/s11356-019-04974-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/22/2019] [Indexed: 06/09/2023]
Abstract
Mercury (Hg), the environmental toxicant, is present in the soil, water, and air as it is substantially distributed throughout the environment. Being extremely toxic even at low concentration, its remediation is utterly important. Therefore, it is necessary to detoxify the contaminant within the acceptable limits before threatening the environment. Although various conventional methods are being used, irrespective of high cost, it produces intermediate toxic by-product too. Biological methods are eco-friendly, clean, greener, and safer for the remediation of heavy metals corresponding to the conventional remediation due to their economic and high-tech constraints. Bioremediation is now being used for Hg (II) removal, which involves biosorption and bioaccumulation mechanisms or both, also mercuric ion reductase, exopolysaccharide play significant role in detoxification of mercury by acting a potential instrument for the remediation of heavy metals. In this review paper, we shed light on problems caused by mercury pollution, mercury cycle, and its global scenario and detoxification approaches by biological methods and result found in the literature.
Collapse
Affiliation(s)
- Shalini Singh
- Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, 826 004, India
| | - Vipin Kumar
- Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, 826 004, India.
| |
Collapse
|
11
|
Koontz JM, Dancy BCR, Horton CL, Stallings JD, DiVito VT, Lewis JA. The Role of the Human Microbiome in Chemical Toxicity. Int J Toxicol 2019; 38:251-264. [PMID: 31220972 DOI: 10.1177/1091581819849833] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
There is overwhelming evidence that the microbiome must be considered when evaluating the toxicity of chemicals. Disruption of the normal microbial flora is a known effect of toxic exposure, and these disruptions may lead to human health effects. In addition, the biotransformation of numerous compounds has been shown to be dependent on microbial enzymes, with the potential for different host health outcomes resulting from variations in the microbiome. Evidence suggests that such metabolism of environmental chemicals by enzymes from the host's microbiota can affect the toxicity of that chemical to the host. Chemical-microbial interactions can be categorized into two classes: Microbiome Modulation of Toxicity (MMT) and Toxicant Modulation of the Microbiome (TMM). MMT refers to transformation of a chemical by microbial enzymes or metabolites to modify the chemical in a way that makes it more or less toxic. TMM is a change in the microbiota that results from a chemical exposure. These changes span a large magnitude of effects and may vary from microbial gene regulation, to inhibition of a specific enzyme, to the death of the microbes. Certain microbiomes or microbiota may become associated with different health outcomes, such as resistance or susceptibility to exposure to certain toxic chemicals, the ability to recover following a chemical-induced injury, the presence of disease-associated phenotypes, and the effectiveness of immune responses. Future work in toxicology will require an understanding of how the microbiome interacts with toxicants to fully elucidate how a compound will affect a diverse, real-world population.
Collapse
Affiliation(s)
- Jason M Koontz
- 1 US Army Center for Environmental Health Research, Fort Detrick, MD, USA
| | - Blair C R Dancy
- 1 US Army Center for Environmental Health Research, Fort Detrick, MD, USA
| | | | | | - Valerie T DiVito
- 1 US Army Center for Environmental Health Research, Fort Detrick, MD, USA
| | - John A Lewis
- 1 US Army Center for Environmental Health Research, Fort Detrick, MD, USA
| |
Collapse
|
12
|
The Construction of an Engineered Bacterial Strain and Its Application in Accumulating Mercury from Wastewater. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8091572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To remove organic and inorganic mercury from wastewater, an engineered bacterial strain, BL21-7, was constructed that contained the artificial operon P16S-g10-merT-merP-merB1-merB2-ppk-rpsT. For BL21-7, the minimum inhibitory concentrations of mercuric chloride, methylmercury chloride and phenylmercury chloride in Luria-Bertani (LB) medium were 100 µmol/L, 60 µmol/L and 80 µmol/L, respectively. After being cultured in three media (liquid LB containing 80 µmol/L mercuric chloride, 40 µmol/L methylmercury chloride or 60 µmol/L phenylmercury chloride) for 72 h, the engineered bacteria accumulated up to 70.5 ± 1.5 µmol/L, 33.5 ± 3.2 µmol/L and 45.3 ± 3.7 µmol/L of mercury, respectively. In the presence of 10 µmol/L Cd2+, 10 µmol/L Pb2+ or 10 µmol/L Cu2+, the accumulation of mercurial derivatives by BL21-7 was not affected. BL21-7 could accumulate mercury well in media with pH values ranging from 5 to 8 and it could work well at temperatures from 25 °C to 37 °C. After BL21-7 was added to wastewater and cultured for 24 h, approximately 43.7% of the Hg in the wastewater was removed.
Collapse
|
13
|
Ture M, Altinok I, Alp H. Effects of Cage Farming on Antimicrobial and Heavy Metal Resistance of Escherichia coli, Enterococcus faecium, and Lactococcus garvieae. Microb Drug Resist 2018; 24:1422-1430. [PMID: 29733265 DOI: 10.1089/mdr.2018.0040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVE To characterize antibiotic resistance genes (ARGs) and heavy metal resistance genes (HMRGs) of Escherichia coli and Enterococcus faecium isolated from the sediment and Lactococcus garvieae isolated from fish. MATERIALS AND METHODS The isolated bacteria were identified by sequencing 16S rRNA genes. After identification of the bacteria, tetracycline (tetA, tetB, tetD), erythromycin (ereA, ereB), sulfonamides (sulI, sulII), trimethoprim (dhfrA1), β-lactam (blaTEM, blaCTX, ampC), florfenicol (floR), and class 1 integron (Int1) resistance gene were then determined. The presence of HMRGs, including copper (copA), mercury (mer), cadmium, zinc, cobalt (czc), and nickel, cobalt cadmium (ncc), was also analyzed by PCR. All strains were checked for the presence of ARGs and/or HMRGs on the plasmid. RESULTS The frequency of the β-lactam resistance gene was highest and ranged from 49.7% to 62.3%, followed by sulfonamides, tetracyclines, phenicols, and macrolide resistance genes. The cage culture fish farming practice showed significant effects on ARG frequency of bacteria isolated from the sediment, whereas it had no effect on the frequency of HMRGs. The most prevalent HMRG was determined as mercury-resistant mer gene in all bacteria. All four of the HMRGs were located on plasmids with frequency ranging from 1.20% to 32.53%. The presence of ARGs on plasmids ranged between 2.2% (Dhfr1) and 75% (AmpC, blactx, tetB), and plasmids did not contain tetD and ereB genes. CONCLUSION The results of this study indicate that fish farming can significantly influence the antimicrobial resistance properties of bacteria isolated from sediment samples.
Collapse
Affiliation(s)
- Mustafa Ture
- 1 Fish Health Department, Central Fisheries Research Institute , Yomra, Trabzon, Turkey
| | - Ilhan Altinok
- 2 Department of Fisheries Technology Engineering, Faculty of Marine Science, Karadeniz Technical University , Surmene, Trabzon, Turkey
| | - Huseyin Alp
- 1 Fish Health Department, Central Fisheries Research Institute , Yomra, Trabzon, Turkey
| |
Collapse
|
14
|
Mercury bioremediation by mercury resistance transposon-mediated in situ molecular breeding. Appl Microbiol Biotechnol 2018; 102:3037-3048. [DOI: 10.1007/s00253-018-8847-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 10/17/2022]
|
15
|
|
16
|
Structural Analysis of the Hg(II)-Regulatory Protein Tn501 MerR from Pseudomonas aeruginosa. Sci Rep 2016; 6:33391. [PMID: 27641146 PMCID: PMC5027573 DOI: 10.1038/srep33391] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/24/2016] [Indexed: 01/07/2023] Open
Abstract
The metalloprotein MerR is a mercury(II)-dependent transcriptional repressor-activator that responds to mercury(II) with extraordinary sensitivity and selectivity. It's widely distributed in both Gram-negative and Gram-positive bacteria but with barely detectable sequence identities between the two sources. To provide structural basis for the considerable biochemical and biophysical experiments previously performed on Tn501 and Tn21 MerR from Gram-negative bacteria, we analyzed the crystal structure of mercury(II)-bound Tn501 MerR. The structure in the metal-binding domain provides Tn501 MerR with a high affinity for mercury(II) and the ability to distinguish mercury(II) from other metals with its unique planar trigonal coordination geometry, which is adopted by both Gram-negative and Gram-positive bacteria. The mercury(II) coordination state in the C-terminal metal-binding domain is transmitted through the allosteric network across the dimer interface to the N-terminal DNA-binding domain. Together with the previous mutagenesis analyses, the present data indicate that the residues in the allosteric pathway have a central role in maintaining the functions of Tn501 MerR. In addition, the complex structure exhibits significant differences in tertiary and quaternary structural arrangements compared to those of Bacillus MerR from Gram-positive bacteria, which probably enable them to function with specific promoter DNA with different spacers between -35 and -10 elements.
Collapse
|
17
|
A comparative review towards potential of microbial cells for heavy metal removal with emphasis on biosorption and bioaccumulation. World J Microbiol Biotechnol 2016; 32:170. [DOI: 10.1007/s11274-016-2117-1] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 07/25/2016] [Indexed: 10/21/2022]
|
18
|
Merkle T, Holder IT, Hartig JS. The dual aptamer approach: rational design of a high-affinity FAD aptamer. Org Biomol Chem 2016; 14:447-450. [PMID: 26586417 DOI: 10.1039/c5ob02026c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A design strategy for high-affinity aptamers of complex biomolecules is presented. We developed an RNA with FAD-binding properties by combining known ATP- and FMN-aptamers. Cooperative binding of FAD was shown by SPR spectroscopy and fluorescence assays. The strategy should be transferable to several other biomolecules.
Collapse
Affiliation(s)
- T Merkle
- Department of Chemistry and Konstanz Research School Chemical Biology (KoRS-CB), University of Konstanz, Universitätsstr. 10, 78457 Konstanz, Germany.
| | | | | |
Collapse
|
19
|
Abstract
The survival capacity of microorganisms in a contaminated environment is limited by the concentration and/or toxicity of the pollutant. Through evolutionary processes, some bacteria have developed or acquired mechanisms to cope with the deleterious effects of toxic compounds, a phenomenon known as tolerance. Common mechanisms of tolerance include the extrusion of contaminants to the outer media and, when concentrations of pollutants are low, the degradation of the toxic compound. For both of these approaches, plasmids that encode genes for the degradation of contaminants such as toluene, naphthalene, phenol, nitrobenzene, and triazine or are involved in tolerance toward organic solvents and heavy metals, play an important role in the evolution and dissemination of these catabolic pathways and efflux pumps. Environmental plasmids are often conjugative and can transfer their genes between different strains; furthermore, many catabolic or efflux pump genes are often associated with transposable elements, making them one of the major players in bacterial evolution. In this review, we will briefly describe catabolic and tolerance plasmids and advances in the knowledge and biotechnological applications of these plasmids.
Collapse
|
20
|
The History of Cupriavidus metallidurans Strains Isolated from Anthropogenic Environments. SPRINGERBRIEFS IN MOLECULAR SCIENCE 2015. [DOI: 10.1007/978-3-319-20594-6_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
21
|
Wakelin S, Gerard E, Black A, Hamonts K, Condron L, Yuan T, van Nostrand J, Zhou J, O'Callaghan M. Mechanisms of pollution induced community tolerance in a soil microbial community exposed to Cu. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2014; 190:1-9. [PMID: 24686114 DOI: 10.1016/j.envpol.2014.03.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Revised: 02/27/2014] [Accepted: 03/07/2014] [Indexed: 05/13/2023]
Abstract
Pollution induced community tolerance (PICT) to Cu(2+), and co-tolerance to nanoparticulate Cu, ionic silver (Ag(+)), and vancomycin were measured in field soils treated with Cu(2+) 15 years previously. EC50 values were determined using substrate induced respiration and correlations made against soil physicochemical properties, microbial community structure, physiological status (qCO2; metabolic quotient), and abundances of genes associated with metal and antibiotic resistance. Previous level of exposure to copper was directly (P < 0.05) associated with tolerance to addition of new Cu(2+), and also of nanoparticle Cu. However, Cu-exposed communities had no co-tolerance to Ag(+) and had increased susceptibly to vancomycin. Increased tolerance to both Cu correlated (P < 0.05) with increased metabolic quotient, potentially indicating that the community directed more energy towards cellular maintenance rather than biomass production. Neither bacterial or fungal community composition nor changes in the abundance of genes involved with metal resistance were related to PICT or co-tolerance mechanisms.
Collapse
Affiliation(s)
- Steven Wakelin
- AgResearch Ltd, Lincoln Science Centre, Private Bag 4749, Christchurch, New Zealand.
| | - Emily Gerard
- AgResearch Ltd, Lincoln Science Centre, Private Bag 4749, Christchurch, New Zealand
| | - Amanda Black
- Bio-Protection Research Centre, P.O. Box 85084, Lincoln University, Lincoln 7647, Christchurch, New Zealand; Faculty of Agriculture and Life Sciences, PO Box 85084, Lincoln University, Lincoln 7647, Christchurch, New Zealand
| | - Kelly Hamonts
- Faculty of Agriculture and Life Sciences, PO Box 85084, Lincoln University, Lincoln 7647, Christchurch, New Zealand; CSIRO Plant Industry, Canberra ACT 2601, Australia
| | - Leo Condron
- Faculty of Agriculture and Life Sciences, PO Box 85084, Lincoln University, Lincoln 7647, Christchurch, New Zealand
| | - Tong Yuan
- Institute for Environmental Genomics, University of Oklahoma, 101 David L Boren Blvd, OK 73019, USA
| | - Joy van Nostrand
- Institute for Environmental Genomics, University of Oklahoma, 101 David L Boren Blvd, OK 73019, USA
| | - Jizhong Zhou
- Institute for Environmental Genomics, University of Oklahoma, 101 David L Boren Blvd, OK 73019, USA
| | - Maureen O'Callaghan
- AgResearch Ltd, Lincoln Science Centre, Private Bag 4749, Christchurch, New Zealand
| |
Collapse
|
22
|
Maynaud G, Brunel B, Yashiro E, Mergeay M, Cleyet-Marel JC, Le Quéré A. CadA of Mesorhizobium metallidurans isolated from a zinc-rich mining soil is a PIB-2-type ATPase involved in cadmium and zinc resistance. Res Microbiol 2014; 165:175-89. [DOI: 10.1016/j.resmic.2014.02.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 02/13/2014] [Indexed: 10/25/2022]
|
23
|
Pant D, Singh P. Pollution due to hazardous glass waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:2414-36. [PMID: 24281678 DOI: 10.1007/s11356-013-2337-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 11/04/2013] [Indexed: 05/16/2023]
Abstract
Pollution resulting from hazardous glass (HG) is widespread across the globe, both in terms of quantity and associated health risks. In waste cathode ray tube (CRT) and fluorescent lamp glass, mercury and lead are present as the major pollutants. The current review discusses the issues related to quantity and associated risk from the pollutant present in HG and proposes the chemical, biological, thermal, hybrid, and nanotechniques for its management. The hybrid is one of the upcoming research models involving the compatible combination of two or more techniques for better and efficient remediation. Thermal mercury desorption starts at 100 °C but for efficient removal, the temperature should be >460 °C. Involvement of solar energy for this purpose makes the research more viable and ecofriendly. Nanoparticles such as Fe, Se, Cu, Ni, Zn, Ag, and WS2 alone or with its formulation can immobilize heavy metals present in HG by involving a redox mechanism. Straight-line equation from year-wise sale can provide future sale data in comparison with lifespan which gives future pollutant approximation. Waste compact fluorescent lamps units projected for the year 2015 is 9,300,000,000 units and can emit nearly 9,300 kg of mercury. On the other hand, CRT monitors have been continuously replaced by more improved versions like liquid crystal display and plasma display panel resulting in the production of more waste. Worldwide CRT production was 83,300,000 units in 2002 and can approximately release 83,000 metric tons of lead.
Collapse
Affiliation(s)
- Deepak Pant
- Department of Environmental Sciences, Central University of Himachal Pradesh, Dharamshala, Himachal Pradesh, 176215, India,
| | | |
Collapse
|
24
|
Zhan Y, Yan Y, Zhang W, Chen M, Lu W, Ping S, Lin M. Comparative analysis of the complete genome of an Acinetobacter calcoaceticus strain adapted to a phenol-polluted environment. Res Microbiol 2012; 163:36-43. [DOI: 10.1016/j.resmic.2011.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 09/19/2011] [Indexed: 11/28/2022]
|
25
|
Schmidt A, Hagen M, Schütze E, Schmidt A, Kothe E. In silico prediction of potential metallothioneins and metallohistins in actinobacteria. J Basic Microbiol 2011; 50:562-9. [PMID: 21077111 DOI: 10.1002/jobm.201000055] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Metallothioneins and metallohistins are short peptides with a high cysteine and/or histidine content able to coordinate metals intracellularly, thereby increasing the tolerance against elevated concentrations of metals. Because of their features, they can be detected by in silico prediction from proteomes annotated from sequenced genomes. Here, we analyzed 73 sequenced actinobacterial genomes for peptides (≤ 100 amino acids) with a high content of cysteine and histidine (≥ 15%) and identified 103 putative metallothioneins and metallohistins. For 45 of these peptides, we found similarities to metal binding protein domains, including zinc fingers, heavy metal transporters or eukaryotic metallothioneins, which can serve as proof-of-principle in underscoring a potential function as metal binding peptides. An evolutionary origin from metal containing domains of enzymes is discussed and metallohistins not containing cysteine are described for the first time for bacteria.
Collapse
Affiliation(s)
- Andre Schmidt
- Microbial Phytopathology, Institute of Microbiology, Faculty of Biology and Pharmacy, Friedrich-Schiller-University, Jena, Germany
| | | | | | | | | |
Collapse
|
26
|
Rojas LA, Yáñez C, González M, Lobos S, Smalla K, Seeger M. Characterization of the metabolically modified heavy metal-resistant Cupriavidus metallidurans strain MSR33 generated for mercury bioremediation. PLoS One 2011; 6:e17555. [PMID: 21423734 PMCID: PMC3056708 DOI: 10.1371/journal.pone.0017555] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Accepted: 01/25/2011] [Indexed: 11/18/2022] Open
Abstract
Background Mercury-polluted environments are often contaminated with other heavy metals. Therefore, bacteria with resistance to several heavy metals may be useful for bioremediation. Cupriavidus metallidurans CH34 is a model heavy metal-resistant bacterium, but possesses a low resistance to mercury compounds. Methodology/Principal Findings To improve inorganic and organic mercury resistance of strain CH34, the IncP-1β plasmid pTP6 that provides novel merB, merG genes and additional other mer genes was introduced into the bacterium by biparental mating. The transconjugant Cupriavidus metallidurans strain MSR33 was genetically and biochemically characterized. Strain MSR33 maintained stably the plasmid pTP6 over 70 generations under non-selective conditions. The organomercurial lyase protein MerB and the mercuric reductase MerA of strain MSR33 were synthesized in presence of Hg2+. The minimum inhibitory concentrations (mM) for strain MSR33 were: Hg2+, 0.12 and CH3Hg+, 0.08. The addition of Hg2+ (0.04 mM) at exponential phase had not an effect on the growth rate of strain MSR33. In contrast, after Hg2+ addition at exponential phase the parental strain CH34 showed an immediate cessation of cell growth. During exposure to Hg2+ no effects in the morphology of MSR33 cells were observed, whereas CH34 cells exposed to Hg2+ showed a fuzzy outer membrane. Bioremediation with strain MSR33 of two mercury-contaminated aqueous solutions was evaluated. Hg2+ (0.10 and 0.15 mM) was completely volatilized by strain MSR33 from the polluted waters in presence of thioglycolate (5 mM) after 2 h. Conclusions/Significance A broad-spectrum mercury-resistant strain MSR33 was generated by incorporation of plasmid pTP6 that was directly isolated from the environment into C. metallidurans CH34. Strain MSR33 is capable to remove mercury from polluted waters. This is the first study to use an IncP-1β plasmid directly isolated from the environment, to generate a novel and stable bacterial strain useful for mercury bioremediation.
Collapse
Affiliation(s)
- Luis A. Rojas
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química and Center for Nanotechnology and Systems Biology, Universidad Técnica Federico Santa María, Valparaíso, Chile
- Laboratorio de Espectroscopía, Facultad de Farmacia, Universidad de Valparaíso, Playa Ancha, Valparaíso, Chile
| | - Carolina Yáñez
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química and Center for Nanotechnology and Systems Biology, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Myriam González
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química and Center for Nanotechnology and Systems Biology, Universidad Técnica Federico Santa María, Valparaíso, Chile
| | - Soledad Lobos
- Laboratorio de Espectroscopía, Facultad de Farmacia, Universidad de Valparaíso, Playa Ancha, Valparaíso, Chile
| | - Kornelia Smalla
- Julius Kühn-Institut, Federal Research Centre for Cultivated Plants (JKI), Institute for Epidemiology and Pathogen Diagnostics, Braunschweig, Germany
| | - Michael Seeger
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química and Center for Nanotechnology and Systems Biology, Universidad Técnica Federico Santa María, Valparaíso, Chile
- * E-mail:
| |
Collapse
|
27
|
|
28
|
Ramakrishnan B, Megharaj M, Venkateswarlu K, Sethunathan N, Naidu R. Mixtures of environmental pollutants: effects on microorganisms and their activities in soils. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2011; 211:63-120. [PMID: 21287391 DOI: 10.1007/978-1-4419-8011-3_3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Soil is the ultimate sink for most contaminants and rarely has only a single contaminant. More than is generally acknowledge, environmental pollutants exist as mixtures (organic-organic, inorganic-inorganic, and organic-inorganic). It is much more difficult to study chemical mixtures than individual chemicals, especially in the complex soil environment. Similarly, understanding the toxicity of a chemical mixture on different microbial species is much more complex, time consuming and expensive, because multiple testing designs are needed for an increased array of variables. Therefore, until now, scientific enquiries worldwide have extensively addressed the effects of only individual pollutants toward nontarget microorganisms. In this review, we emphasize the present status of research on (i) the environmental occurrence of pollutant mixtures; (ii) the interactions between pollutant mixtures and ecologically beneficial microorganisms; and (iii) the impact of such interactions on environmental quality. We also address the limitations of traditional cultivation based methods for monitoring the effects of pollutant mixtures on microorganisms. Long-term monitoring of the effects of pollutant mixtures on microorganisms, particularly in soil and aquatic ecosystems, has received little attention. Microbial communities that can degrade or can degrade or can develop tolerance to, or are inhibited by chemical mixtures greatly contribute to resilience and resistance in soil environments. We also stress in this review the important emerging trend associated with the employment of molecular methods for establishing the effects of pollutant mixtures on microbial communities. There is currently a lack of sufficient cogent toxicological data on chemical mixtures for making informed decision making in risk assessment by regulators. Therefore, not only more toxicology information on mixtures is needed but also there is an urgent need to generate sufficient, suitable, and long-term modeling data that have higher predictability when assessing pollutant mixture effects on microorganisms. Such data would improve risk assessment at contaminated sites and would help devise more effective bioremediation strategies.
Collapse
|
29
|
Brown D, Goncharov A, Paul E, Simonin H, Carpenter DO. The relationship between Adirondack lake pH and levels of mercury in yellow perch. JOURNAL OF AQUATIC ANIMAL HEALTH 2010; 22:280-290. [PMID: 21413513 DOI: 10.1577/h10-005.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Levels of total mercury in yellow perch Perca flavescens from Adirondack lakes were studied in relation to characteristics of the lakes to determine why some lakes had fish with higher concentrations of mercury. Almost all mercury in fish is in the form of methylmercury, which can pose significant health hazards to humans who consume such fish. Fish mercury concentrations and water chemistry data were analyzed from eight Adirondack lakes. Four lakes (Halfmoon Lake, Sand Pond, Rock Pond, and Upper Sister Lake) had pH values of less than 5.0. Four other lakes (Lake Adirondack, Kings Flow, Harris Lake, and Lake Kushaqua) had pH values of more than 7.0. The acidic lakes also had high levels of aluminum and low acid-neutralizing capacity relative to the neutral lakes. Yellow perch (n = 100) from the acidic lakes had significantly higher levels of mercury than did those (n = 102) from the neutral lakes (P < 0.001), and the total mercury concentration increased with both length and weight of the fish. We conclude that the pH of the lake water is a major factor in determining the concentration of methylmercury in yellow perch.
Collapse
Affiliation(s)
- Donald Brown
- Institute for Health and the Environment, University at Albany, 5 University Place, Rensselaer, New York 12144, USA
| | | | | | | | | |
Collapse
|
30
|
Lal D, Lal R. Evolution of mercuric reductase (merA) gene: A case of horizontal gene transfer. Microbiology (Reading) 2010. [DOI: 10.1134/s0026261710040120] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
31
|
Ren Y, Ren Y, Zhou Z, Guo X, Li Y, Feng L, Wang L. Complete genome sequence of Enterobacter cloacae subsp. cloacae type strain ATCC 13047. J Bacteriol 2010; 192:2463-4. [PMID: 20207761 PMCID: PMC2863489 DOI: 10.1128/jb.00067-10] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Accepted: 02/23/2010] [Indexed: 11/20/2022] Open
Abstract
Enterobacter cloacae is an important nosocomial pathogen. Here, we report the completion of the genome sequence of E. cloacae ATCC 13047, the type strain of E. cloacae subsp. cloacae. Multiple sets of virulence determinant and heavy-metal resistance genes have been found in the genome. To the best of our knowledge, this is the first complete genome sequence of the E. cloacae species.
Collapse
Affiliation(s)
- Yan Ren
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Yi Ren
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Zhemin Zhou
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Xi Guo
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Yayue Li
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Lu Feng
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Lei Wang
- TEDA School of Biological Sciences and Biotechnology, Nankai University, Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin Research Center for Functional Genomics and Biochips, Engineering and Research Center for Microbial Functional Genomics and Detection Technology, Ministry of Education, Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin Biochip Corporation, 23 Hongda Street, TEDA, Tianjin 300457, People's Republic of China, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| |
Collapse
|
32
|
Narita M, Matsui K, Huang CC, Kawabata Z, Endo G. Dissemination of TnMERI1-like mercury resistance transposons among Bacillus isolated from worldwide environmental samples. FEMS Microbiol Ecol 2009; 48:47-55. [PMID: 19712430 DOI: 10.1016/j.femsec.2003.12.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Fifty-six mercury-resistant (Hg(R)) Bacillus strains were isolated from natural environments at various sites of the world. Southern hybridisation and polymerase chain reaction (PCR) analysis showed that 21 of the 56 isolates have closely related or identical mer operons to that of Bacillus megaterium MB1. These 21 isolates displayed a broad-spectrum mercury resistance and volatilised Hg(0). PCR amplification with a single primer and restriction fragment length polymorphism analysis showed that these 21 isolates had TnMERI1-like class II transposons. These transposons can be classified into Tn5084, Tn5085, or TnMERI1. From these results, at least three types of class II mercury resistance transposons exist in Hg(R)Bacillus and these transposons may contribute the worldwide distribution and horizontal dissemination of the mer operons among Bacillus strains in natural environments.
Collapse
|
33
|
Mercury pollution: an emerging problem and potential bacterial remediation strategies. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0050-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
34
|
Whitehead KA, Verran J. The Effect of Substratum Properties on the Survival of Attached Microorganisms on Inert Surfaces. MARINE AND INDUSTRIAL BIOFOULING 2008. [DOI: 10.1007/978-3-540-69796-1_2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
35
|
Sotero-Martins A, de Jesus MS, Lacerda M, Moreira JC, Filgueiras ALL, Barrocas PRG. A conservative region of the mercuric reductase gene (mera) as a molecular marker of bacterial mercury resistance. Braz J Microbiol 2008; 39:307-10. [PMID: 24031221 PMCID: PMC3768397 DOI: 10.1590/s1517-838220080002000020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2007] [Revised: 11/22/2007] [Accepted: 02/18/2008] [Indexed: 11/28/2022] Open
Abstract
The most common bacterial mercury resistance mechanism is based on the reduction of Hg(II) to Hg(0), which is dependent of the mercuric reductase enzyme (MerA) activity. The use of a 431 bp fragment of a conservative region of the mercuric reductase (merA) gene was applied as a molecular marker of this mechanism, allowing the identification of mercury resistant bacterial strains.
Collapse
Affiliation(s)
- Adriana Sotero-Martins
- Centro de Pesquisa Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, AM, Brasil
- Programa de Pós-Graduação Multi-Institucional em Biotecnologia, Universidade Federal do Amazonas, Manaus, AM, Brasil
- Departamento de Saneamento e Saúde Ambiental, Escola Nacional de Saúde Pública Sérgio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Michele Silva de Jesus
- Centro de Pesquisa Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, AM, Brasil
- Programa de Pós-Graduação Multi-Institucional em Biotecnologia, Universidade Federal do Amazonas, Manaus, AM, Brasil
| | - Michele Lacerda
- Centro de Pesquisa Leônidas e Maria Deane, Fundação Oswaldo Cruz, Manaus, AM, Brasil
- Programa de Pós-Graduação Multi-Institucional em Biotecnologia, Universidade Federal do Amazonas, Manaus, AM, Brasil
| | - Josino Costa Moreira
- Centro de Estudos de Saúde do Trabalhador e Ecologia Humana, Escola Nacional de Saúde Pública Sérgio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | | | - Paulo Rubens Guimarães Barrocas
- Departamento de Saneamento e Saúde Ambiental, Escola Nacional de Saúde Pública Sérgio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
36
|
Ghosh S, Sadhukhan P, Chaudhuri J, Ghosh D, Mandal A. Volatilization of mercury by immobilized mercury-resistant bacterial cells. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1996.tb03288.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Ghosh S, Sadhukhan P, Ghosh D, Mandal A, Chaudhuri J, Mandal A. Studies on the effect of mercury and organomercurial on the growth and nitrogen fixation by mercury-resistantAzotobacterstrains. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1996.tb03226.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
38
|
Leonhäuser J, Wang W, Deckwer WD, Wagner-Döbler I. Functioning of the mercury resistance operon at extremely high Hg(II) loads in a chemostat: A proteome analysis. J Biotechnol 2007; 132:469-80. [PMID: 17904239 DOI: 10.1016/j.jbiotec.2007.08.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2007] [Revised: 07/10/2007] [Accepted: 08/01/2007] [Indexed: 11/25/2022]
Abstract
The transformation of extremely high concentrations of ionic mercury (up to 500 mg L(-1)) was investigated in a chemostat for two mercury-resistant Pseudomonas putida strains, the sediment isolate Spi3 carrying a regulated mercury resistance (mer) operon, and the genetically engineered strain KT2442Colon, two colonsmer73 expressing the mer operon constitutively. Both strains reduced Hg(II) with an efficiency of 99.9% even at the maximum load, but the concentration of particle bound mercury in the chemostat increased strongly. A proteome analysis using two-dimensional gel electrophoresis and mass spectrometry (2-DE/MS) showed constant expression of the MerA and MerB proteins in KT2442Colon, two colonsmer73 as expected, while in Spi3 expression of both proteins was strongly dependent on the Hg(II) concentration. The total cellular proteome of the two strains showed very little changes at high Hg(II) load. However, certain cellular responses of the two strains were identified, especially in membrane-related transport proteins. In Spi3, an up to 45-fold strong induction of a cation efflux transporter was observed, accompanied by a drastic downregulation (106-fold) of an outer membrane porin. In such a way, the cell complemented the highly specific mercury resistance mechanism with a general detoxification response. No indication of a higher demand on energy metabolism could be found for both strains.
Collapse
Affiliation(s)
- Johannes Leonhäuser
- Technical University Braunschweig/HZI-Helmholtz Center for Infection Research, Biochemical Engineering, Inhoffenstrasse 7, D-38124 Braunschweig, Germany
| | | | | | | |
Collapse
|
39
|
Schlüter A, Szczepanowski R, Pühler A, Top EM. Genomics of IncP-1 antibiotic resistance plasmids isolated from wastewater treatment plants provides evidence for a widely accessible drug resistance gene pool. FEMS Microbiol Rev 2007; 31:449-77. [PMID: 17553065 DOI: 10.1111/j.1574-6976.2007.00074.x] [Citation(s) in RCA: 248] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The dramatic spread of antibiotic resistance is a crisis in the treatment of infectious diseases that affect humans. Several studies suggest that wastewater treatment plants (WWTP) are reservoirs for diverse mobile antibiotic resistance elements. This review summarizes findings derived from genomic analysis of IncP-1 resistance plasmids isolated from WWTP bacteria. Plasmids that belong to the IncP-1 group are self-transmissible, and transfer to and replicate in a wide range of hosts. Their backbone functions are described with respect to their impact on vegetative replication, stable maintenance and inheritance, mobility and plasmid control. Accessory genetic modules, mainly representing mobile genetic elements, are integrated in-between functional plasmid backbone modules. These elements carry determinants conferring resistance to nearly all clinically relevant antimicrobial drug classes, to heavy metals, and quaternary ammonium compounds used as disinfectants. All plasmids analysed here contain integrons that potentially facilitate integration, exchange and dissemination of resistance gene cassettes. Comparative genomics of accessory modules located on plasmids from WWTP and corresponding modules previously identified in other bacterial genomes revealed that animal, human and plant pathogens and other bacteria isolated from different habitats share a common pool of resistance determinants.
Collapse
Affiliation(s)
- Andreas Schlüter
- Fakultät für Biologie, Lehrstuhl für Genetik, Universität Bielefeld, Bielefeld, Germany
| | | | | | | |
Collapse
|
40
|
Bhadra B, Nanda AK, Chakraborty R. Fluctuation in recoverable nickel and zinc resistant copiotrophic bacteria explained by the varying zinc ion content of Torsa River in different months. Arch Microbiol 2007; 188:215-24. [PMID: 17464499 DOI: 10.1007/s00203-007-0236-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2006] [Revised: 02/28/2007] [Accepted: 03/19/2007] [Indexed: 10/23/2022]
Abstract
Heavy metal content analysis of River Torsa in India did not indicate any alarming level of toxicity for human consumption but revealed variation at the ppb level in different months. The variation in recoverable nickel and zinc resistant copiotrophic (or eutrophic) bacterial counts was explained by the variation of the zinc content (34.0-691.3 ppb) of the river water in different sampling months. Growth studies conducted with some purified nickel and/or zinc resistant strains revealed that pre-exposure of the cells to ppb levels of Zn(2+), comparable to the indigenous zinc ion concentration of the river, could induce the nickel or zinc resistance. A minimum concentration of 5-10 microM Zn(2+ )(325-650 ppb) was found effective in inducing the Nickel resistance of the isolates. Zinc resistance of the isolates was tested by pre-exposing the cells to 4 microM Zn(2+ )(260 ppb). The lag phase was reduced by 6-8 h in all the cases. Biochemical characteristics and phylogenetic analysis based on 16S rDNA sequence indicated that some of the Torsa River isolates, having inducible nickel and zinc resistance, are members of the genus Pseudomonas, Acinetobacter, Bacillus, Enterobacter, Serratia and Moraxella.
Collapse
Affiliation(s)
- Bhaskar Bhadra
- Department of Biotechnology, North Bengal University, Siliguri 734430, West Bengal, India
| | | | | |
Collapse
|
41
|
Ghosh SK, Chaudhuri J, Gachhui R, Mandal A, Ghosh S. Effect of mercury and organomercurials on cellular glucose utilization: a study using resting mercury-resistant yeast cells. J Appl Microbiol 2007; 102:375-83. [PMID: 17241342 DOI: 10.1111/j.1365-2672.2006.03100.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Mercury compounds are highly toxic to all types of living cells. Isolated yeast strains of Rhodotorula rubra showed high and low resistance pattern towards mercury and organomercurial compounds. To investigate the basis of differential sensitivity of these two types of strains, glucose utilization was measured in the presence of mercury compounds. METHODS AND RESULTS Glucose utilization process remained unaffected in resting cells of highly Hg(2+)-resistant strain in the presence of HgCl(2) but not in the presence of phenylmercuric acetate and thimerosal. However, HgCl(2) significantly affected glucose utilization in the case of low-resistant cells. The Hg-retaining ability of the cell wall of highly Hg(2+)-resistant yeast strain was greater than that of the weakly Hg(2+)-resistant strain. The spheroplast-bound Hg(2+) was also significantly less in the highly Hg(2+)-resistant strain than in the weakly Hg(2+)-resistant strain. CONCLUSIONS Glucose uptake machinery was not affected in the presence of toxic metal ions in the case of high-resistant strains. But in the case of low Hg(2+)-resistant strain, glucose transport system may be affected either by inactivation of sensor proteins containing -SH group associated with glucose uptake. SIGNIFICANCE AND IMPACT OF THE STUDY Cell wall of mercury-resistant yeast cells may play an important role in heavy metal bioremediation process.
Collapse
Affiliation(s)
- S K Ghosh
- Department of Biochemistry, University College of Science, Calcutta University, Kolkata, India.
| | | | | | | | | |
Collapse
|
42
|
Jaysankar D, Ramaiah N, Bhosle NB, Garg A, Vardanyan L, Nagle VL, Fukami K. Potential of Mercury-Resistant Marine Bacteria for Detoxification of Chemicals of Environmental Concern. Microbes Environ 2007. [DOI: 10.1264/jsme2.22.336] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- De Jaysankar
- National Institute of Oceanography
- Graduate School of Kuroshio Science (GRAKUS), Kochi University
| | | | | | | | | | | | - Kimio Fukami
- Graduate School of Kuroshio Science (GRAKUS), Kochi University
| |
Collapse
|
43
|
Chen BY, Wu CH, Chang JS. An assessment of the toxicity of metals to Pseudomonas aeruginosa PU21 (Rip64). BIORESOURCE TECHNOLOGY 2006; 97:1880-6. [PMID: 16243523 DOI: 10.1016/j.biortech.2005.08.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2004] [Revised: 08/24/2005] [Accepted: 08/24/2005] [Indexed: 05/05/2023]
Abstract
The toxicity of Co(II), Mn(II), Cd(II), and Zn(II) for Pseudomonas aeruginosa PU21, a Hg(II)-hyperresistant strain containing the mercury resistance mer operon, was determined. The metal tolerance of PU21 was strongly influenced by environmental conditions (e.g., existing metal, medium composition). Dose-response analysis on chronic and acute toxicity (e.g., EC(20), median effective dose EC(50), and slope factor B) of divalent cobalt, manganese, cadmium, and zinc cations in LB medium amended with citric acid phosphate buffered saline (CAPBS) suggested a toxicity series of Co > Mn approximately Zn > Cd for EC(50). In contrast, excluding the likely precipitate of Zn(II), the toxicity ranking in phosphate-buffered saline (PBS)-amended LB medium was Co > Cd > Mn. The metal toxicity in PBS, irrespective of metals, was greater than that in CAPBS. This might be attributed to the presence of citric acid in CAPBS as a chelating ligand donating electrons to hold free metals (e.g., Cd(2+), Zn(2+) tetrahedral ML(4) complex). The toxicity assessment established viable operation ranges (ca. <EC(50)-EC(70)) to prevent operation failures for metal detoxification and biosorption of mine wastewater treatment by P. aeruginosa PU21.
Collapse
Affiliation(s)
- Bor-Yann Chen
- Department of Chemical and Materials Engineering, National I-Lan University, Taiwan
| | | | | |
Collapse
|
44
|
Stream microcosm for investigating GEM impact on the indigenous bacterial community in river water and sediment. Process Biochem 2006. [DOI: 10.1016/j.procbio.2006.06.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
45
|
Buck-Koehntop BA, Porcelli F, Lewin JL, Cramer CJ, Veglia G. Biological chemistry of organotin compounds: Interactions and dealkylation by dithiols. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.12.047] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
46
|
Kannan SK, Mahadevan S, Krishnamoorthy R. Characterization of a mercury-reducing Bacillus cereus strain isolated from the Pulicat Lake sediments, south east coast of India. Arch Microbiol 2006; 185:202-11. [PMID: 16447070 DOI: 10.1007/s00203-006-0088-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2005] [Revised: 12/17/2005] [Accepted: 01/05/2006] [Indexed: 11/25/2022]
Abstract
Pulicat Lake sediments are often severely polluted with the toxic heavy metal mercury. Several mercury-resistant strains of Bacillus species were isolated from the sediments and all the isolates exhibited broad spectrum resistance (resistance to both organic and inorganic mercuric compounds). Plasmid curing assay showed that all the isolated Bacillus strains carry chromosomally borne mercury resistance. Polymerase chain reaction and southern hybridization analyses using merA and merB3 gene primers/probes showed that five of the isolated Bacillus strains carry sequences similar to known merA and merB3 genes. Results of multiple sequence alignment revealed 99% similarity with merA and merB3 of TnMERI1 (class II transposons). Other mercury resistant Bacillus species lacking homology to these genes were not able to volatilize mercuric chloride, indicating the presence of other modes of resistance to mercuric compounds.
Collapse
Affiliation(s)
- Seralathan Kamala Kannan
- Department of Applied Geology, University of Madras, Guindy campus, Post Bag No: 5327, 600 025 Chennai, Tamil Nadu, India.
| | | | | |
Collapse
|
47
|
|
48
|
Fournier PE, Richet H. The epidemiology and control of Acinetobacter baumannii in health care facilities. Clin Infect Dis 2006; 42:692-9. [PMID: 16447117 DOI: 10.1086/500202] [Citation(s) in RCA: 595] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2005] [Accepted: 10/26/2005] [Indexed: 12/12/2022] Open
Abstract
Acinetobacter baumannii is a ubiquitous pathogen capable of causing both community and health care-associated infections (HAIs), although HAIs are the most common form. This organism has emerged recently as a major cause of HAI because of the extent of its antimicrobial resistance and its propensity to cause large, often multifacility, nosocomial outbreaks. The occurrence of outbreak is facilitated by both tolerance to desiccation and multidrug resistance, contributing to the maintenance of these organisms in the hospital environment. In addition, the epidemiology of A. baumannii infection is often complex, with the coexistence of epidemic and endemic infections, the latter of which often is favored by the selection pressure of antimicrobials. The only good news is that potentially severe A. baumannii infection, such as bacteremia or pneumonia in patients in the intensive care unit who are undergoing intubation, do not seem to be associated with a higher attributable mortality rate or an increased length of hospital stay.
Collapse
|
49
|
Fournier PE, Vallenet D, Barbe V, Audic S, Ogata H, Poirel L, Richet H, Robert C, Mangenot S, Abergel C, Nordmann P, Weissenbach J, Raoult D, Claverie JM. Comparative genomics of multidrug resistance in Acinetobacter baumannii. PLoS Genet 2006; 2:e7. [PMID: 16415984 PMCID: PMC1326220 DOI: 10.1371/journal.pgen.0020007] [Citation(s) in RCA: 559] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2005] [Accepted: 12/06/2005] [Indexed: 02/06/2023] Open
Abstract
Acinetobacter baumannii is a species of nonfermentative gram-negative bacteria commonly found in water and soil. This organism was susceptible to most antibiotics in the 1970s. It has now become a major cause of hospital-acquired infections worldwide due to its remarkable propensity to rapidly acquire resistance determinants to a wide range of antibacterial agents. Here we use a comparative genomic approach to identify the complete repertoire of resistance genes exhibited by the multidrug-resistant A. baumannii strain AYE, which is epidemic in France, as well as to investigate the mechanisms of their acquisition by comparison with the fully susceptible A. baumannii strain SDF, which is associated with human body lice. The assembly of the whole shotgun genome sequences of the strains AYE and SDF gave an estimated size of 3.9 and 3.2 Mb, respectively. A. baumannii strain AYE exhibits an 86-kb genomic region termed a resistance island--the largest identified to date--in which 45 resistance genes are clustered. At the homologous location, the SDF strain exhibits a 20 kb-genomic island flanked by transposases but devoid of resistance markers. Such a switching genomic structure might be a hotspot that could explain the rapid acquisition of resistance markers under antimicrobial pressure. Sequence similarity and phylogenetic analyses confirm that most of the resistance genes found in the A. baumannii strain AYE have been recently acquired from bacteria of the genera Pseudomonas, Salmonella, or Escherichia. This study also resulted in the discovery of 19 new putative resistance genes. Whole-genome sequencing appears to be a fast and efficient approach to the exhaustive identification of resistance genes in epidemic infectious agents of clinical significance.
Collapse
Affiliation(s)
- Pierre-Edouard Fournier
- Information Génomique et Structurale, Institute for Structural Biology and Microbiology, IBSM, Marseille, France
- * To whom correspondence should be addressed. E-mail: (PEF); (JMC)
| | - David Vallenet
- Génoscope, Centre National de Séquençage and CNRS UMR8030, Evry, France
| | - Valérie Barbe
- Génoscope, Centre National de Séquençage and CNRS UMR8030, Evry, France
| | - Stéphane Audic
- Information Génomique et Structurale, Institute for Structural Biology and Microbiology, IBSM, Marseille, France
| | - Hiroyuki Ogata
- Information Génomique et Structurale, Institute for Structural Biology and Microbiology, IBSM, Marseille, France
| | - Laurent Poirel
- Département de Bactériologie-Virologie, Hôpital de Bicêtre, Le-Kremlin-Bicêtre, France
| | - Hervé Richet
- Unité des Rickettsies, CNRS UMR6020, Faculté de Médecine, Université de la Méditerranée, Marseille, France
| | - Catherine Robert
- Unité des Rickettsies, CNRS UMR6020, Faculté de Médecine, Université de la Méditerranée, Marseille, France
| | - Sophie Mangenot
- Génoscope, Centre National de Séquençage and CNRS UMR8030, Evry, France
| | - Chantal Abergel
- Information Génomique et Structurale, Institute for Structural Biology and Microbiology, IBSM, Marseille, France
| | - Patrice Nordmann
- Département de Bactériologie-Virologie, Hôpital de Bicêtre, Le-Kremlin-Bicêtre, France
| | - Jean Weissenbach
- Génoscope, Centre National de Séquençage and CNRS UMR8030, Evry, France
| | - Didier Raoult
- Unité des Rickettsies, CNRS UMR6020, Faculté de Médecine, Université de la Méditerranée, Marseille, France
| | - Jean-Michel Claverie
- Information Génomique et Structurale, Institute for Structural Biology and Microbiology, IBSM, Marseille, France
- * To whom correspondence should be addressed. E-mail: (PEF); (JMC)
| |
Collapse
|
50
|
Murtaza I, Dutt A, Mushtaq D, Ali A. Molecular cloning and genetic analysis of functional merB gene from indian isolates of Escherichia coli. Curr Microbiol 2005; 51:297-302. [PMID: 16211434 DOI: 10.1007/s00284-005-0013-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2005] [Accepted: 05/30/2005] [Indexed: 02/08/2023]
Abstract
Studies were carried out to characterize organomercurial lyase genes from wild type mercury-resistant Escherichia coli isolates, previously collected from five geographically distinct regions of the Indian subcontinent. PCR amplification followed by DNA sequencing of amplified fragments showed three merB identical to the previously characterized mer B from E. coli pR831b that were thus considered as the same gene. The remaining two genes derived from E. coli isolates of an almost mercury-free site (Dal lake, Kashmir) and designated as pIAAD3 merB and pIAAD14 merB showed slight variation (2%) at base. However, this variation in pIAAD3 due to the absence of base "T" at 479 position results in complete frame shift and the predicted MerB-like polypeptide derived from it showed 21.53% divergent at its C terminal end from the previously characterized pR831b MerB. The expression profile of pIAAD3 merB in pQE30 and pUC18 vectors each demonstrated 22.2 kDa proteins. The induced DH5alpha E. coli cells possessing pIAAD3 merB cloned in pUC18 vector split phenyl mercuric acetate (PMA) into benzene and inorganic mercury efficiently, thus giving a clue that the expressed gene product is biologically active. The current study suggests that such genetic changes may take place in the continued absence of mercury pressure, and with such modifications, they finally break down to act as vestigial remnants. Further work is going on in our lab to exploit pIAAD3 merB for the bioremediation of mercury-polluted sites.
Collapse
Affiliation(s)
- Imtiyaz Murtaza
- Molecular Biotechnology and Biochemistry Laboratory, Division of PHT, S.K University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus, Srinagar, Kashmir, India.
| | | | | | | |
Collapse
|