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Haque MM, Hossen MN, Rahman A, Roy J, Talukder MR, Ahmed M, Ahiduzzaman M, Haque MA. Decolorization, degradation and detoxification of mutagenic dye Methyl orange by novel biofilm producing plant growth-promoting rhizobacteria. CHEMOSPHERE 2024; 346:140568. [PMID: 38303387 DOI: 10.1016/j.chemosphere.2023.140568] [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: 01/29/2023] [Revised: 10/10/2023] [Accepted: 10/26/2023] [Indexed: 02/03/2024]
Abstract
Discharge of untreated dyeing wastewater nearby water-bodies is one of major causes of water pollution. Generally, bacterial strains isolated from industrial effluents and/or contaminated soils are used for the bioremediation of Methyl orange (MO), a mutagenic recalcitrant mono-azo dye, used in textiles and biomedical. However, MO degradation by biofilm producing plant growth-promoting rhizobacteria (BPPGPR) was not studied yet. In this study, 19 out of 21 BPPGPR strains decolorized 96.3-99.9% and 89.5-96.3% MO under microaerophilic and aerobic conditions, respectively from Luria-Bertani broth (LBB) followed by yeast-extract peptone and salt-optimized broth plus glycerol media within 120 h of incubation at 28 °C. Only selected BPPGPR including Pseudomonas fluorescens ESR7, P. veronii ESR13, Stenotrophomonas maltophilia ESR20, Staphylococcus saprophyticus ESD8, and P. parafulva ESB18 were examined for process optimization of MO decolorization using a single factor optimization method. This study showed that under optimal conditions (e.g., LBB, 100 mg L-1 MO, pH 7, incubation of 96 h, 28 °C), these strains could remove 99.1-99.8% and 97.6-99.5% MO under microaerophilic and aerobic conditions, respectively. Total azoreductase and laccase activities responsible for biodegradation were also remarkably activated in the biodegraded samples under optimal conditions, while these activities were repressed under unfavorable conditions (e.g., 40 °C and 7.5% NaCl). This study confirmed that MO was degraded and detoxified by these bacterial strains through breakage of azo bond. So far, this is the first report on bioremediation of MO by the BPPGPR strains. These BPPGPR strains are highly promising to be utilized for the bioremediation of dyeing wastewater in future.
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Affiliation(s)
- Md Manjurul Haque
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh.
| | - Md Nayeem Hossen
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Ashikur Rahman
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Joty Roy
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Raihan Talukder
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Minhaz Ahmed
- Department of Agroforestry and Environment, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Ahiduzzaman
- Department of Agro-processing, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Amdadul Haque
- Department of Agro-processing, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
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Tripathi M, Singh S, Pathak S, Kasaudhan J, Mishra A, Bala S, Garg D, Singh R, Singh P, Singh PK, Shukla AK, Pathak N. Recent Strategies for the Remediation of Textile Dyes from Wastewater: A Systematic Review. TOXICS 2023; 11:940. [PMID: 37999592 PMCID: PMC10674586 DOI: 10.3390/toxics11110940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023]
Abstract
The presence of dye in wastewater causes substantial threats to the environment, and has negative impacts not only on human health but also on the health of other organisms that are part of the ecosystem. Because of the increase in textile manufacturing, the inhabitants of the area, along with other species, are subjected to the potentially hazardous consequences of wastewater discharge from textile and industrial manufacturing. Different types of dyes emanating from textile wastewater have adverse effects on the aquatic environment. Various methods including physical, chemical, and biological strategies are applied in order to reduce the amount of dye pollution in the environment. The development of economical, ecologically acceptable, and efficient strategies for treating dye-containing wastewater is necessary. It has been shown that microbial communities have significant potential for the remediation of hazardous dyes in an environmentally friendly manner. In order to improve the efficacy of dye remediation, numerous cutting-edge strategies, including those based on nanotechnology, microbial biosorbents, bioreactor technology, microbial fuel cells, and genetic engineering, have been utilized. This article addresses the latest developments in physical, chemical, eco-friendly biological and advanced strategies for the efficient mitigation of dye pollution in the environment, along with the related challenges.
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Affiliation(s)
- Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Sakshi Singh
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Sukriti Pathak
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Jahnvi Kasaudhan
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Aditi Mishra
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Saroj Bala
- Department of Microbiology, Punjab Agricultural University, Ludhiana 141001, India
| | - Diksha Garg
- Department of Microbiology, Punjab Agricultural University, Ludhiana 141001, India
| | - Ranjan Singh
- Department of Microbiology, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Pankaj Singh
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | - Pradeep Kumar Singh
- Department of Biochemistry, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
| | | | - Neelam Pathak
- Department of Biochemistry, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, India
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Mustafa G, Zahid MT, Bharat Kurade M, Mahadeo Patil S, Shakoori FR, Shafiq Z, Ihsan S, Ahn Y, Khan AA, Gacem A, Jeon BH. Molecular characterization of azoreductase and its potential for the decolorization of Remazol Red R and Acid Blue 29. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 335:122253. [PMID: 37499970 DOI: 10.1016/j.envpol.2023.122253] [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: 03/02/2023] [Revised: 07/12/2023] [Accepted: 07/22/2023] [Indexed: 07/29/2023]
Abstract
Azoreductase is a reductive enzyme that efficiently biotransformed textile azo dyes. This study demonstrated the heterologous overexpression of the azoreductase gene in Escherichia coli for the effective degradation of Remazol Red-R and Acid-Blue 29 dyes. The AzK gene of Klebsiella pneumoniae encoding a ≈22 kDa azoreductase enzyme was cloned into the pET21+C expression vector. The inoculum size of 1.5%, IPTG concentration of 0.5 mM, and incubation time of 6 h were optimized by response surface methodology a statistical tool. The crude extract showed 76% and 74%, while the purified enzyme achieved 94% and 93% decolorization of RRR and AB-29, respectively in 0.3 h. The reaction kinetics showed that RRR had a Km and Vmax value of 0.058 mM and 1416 U mg-1, respectively at an NADH concentration of 10 mM. HPLC and GC-MS analyses showed that RRR was effectively bio-transformed by azoreductase to 2-[3-(hydroxy-amino) benzene-1-sulfonyl and AB-29 to aniline and 3-nitrosoaniline. This study explored the potential of recombinant azoreductase isolated from K. pneumoniae in the degradation of toxic textile azo dyes into less toxic metabolites.
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Affiliation(s)
- Ghulam Mustafa
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea; Department of Zoology, Government College University, Lahore, 54000, Lahore, Pakistan
| | - Muhammad Tariq Zahid
- Department of Zoology, Government College University, Lahore, 54000, Lahore, Pakistan
| | - Mayur Bharat Kurade
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Swapnil Mahadeo Patil
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | | | - Zeeshan Shafiq
- Department of Zoology, Government College University, Lahore, 54000, Lahore, Pakistan
| | - Sidra Ihsan
- Department of Zoology, Government College University, Lahore, 54000, Lahore, Pakistan
| | - Yongtae Ahn
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Azmat Ali Khan
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Amel Gacem
- Department of Physics, Faculty of Sciences, University 20 Août 1955, Skikda, 21000, Algeria
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea.
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Xu B, Zhang X, Chang JS, Guo H, Han S, Lee DJ. Remediation of the black-odor water body by aquatic plants with plant growth-promoting Rhizobacteria: Lab and pilot tests. ENVIRONMENTAL RESEARCH 2023; 223:115462. [PMID: 36773643 DOI: 10.1016/j.envres.2023.115462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
To explore an effective, environmental, rapid operating method to repair black and odor water bodies, water samples and sediment samples collected from a polluted municipal lake in Daqing, China, were directly tested in transparent barrels (10 L). Seven groups of optimizing parameters obtained the optimal operating method, and the max removal rate of COD, NH4+-N, NO3--N, and TP were achieved (89.18%, 59.65%, 69.50%, and 75.61%) by using aquatic plants with plant growth-promoting Rhizobacteria (PGPR). To further verify the method's effectiveness, lager scale tests were conducted based on a water tank (216 L), and similar removal rates were obtained within 48 h. The water quality index and microbial community structure analysis revealed the mechanisms of the interaction among plants, microorganisms, and pollutants and the main biological processes during water body remediation. Finally, the cost of water body remediation by using this method was estimated.
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Affiliation(s)
- Bing Xu
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Xiaoyuan Zhang
- College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Jo-Shu Chang
- Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan
| | - Hongliang Guo
- College of Forestry, Northeast Forestry University, Harbin, 150040, China.
| | - Song Han
- College of Forestry, Northeast Forestry University, Harbin, 150040, China.
| | - Duu-Jong Lee
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-li, Taiwan 32003.
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Efficient Degradation of Printing and Dyeing Wastewater by Lotus Leaf-Based Nitrogen Self-Doped Mesoporous Biochar Activated Persulfate: Synergistic Mechanism of Adsorption and Catalysis. Catalysts 2022. [DOI: 10.3390/catal12091004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The discharge of printing and dyeing wastewater has been increasing, causing serious environmental pollution with the rapid development of the industry. Based on this, an N self-doped mesoporous lotus leaf biochar (LLC800) was prepared from lotus leaves as raw material for the activation of Persulfate (PS) to degrade wastewater from printing and dyeing. The removal rate of AO7 by PS, LLC800 and LLC800/PS systems were 0.84%, 31.11% and 99.46%, respectively. Electron paramagnetic resonance spectroscopy (EPR) and quench tests showed the presence of free radicals (•OH, SO4●− and O2●−) and nonradical (1O2) in the LLC800/PS system, where nonradicals (1O2) play an important role in the degradation of AO7. The “N self-doped” effect formed by the high N content of lotus leaves is the main factor leading to the high adsorption and catalytic performance of lotus leaf biochar. The effect of pyrolysis temperature on the performance of biochar can be attributed to the change of N content and conformation and specific surface area in biochar. Moreover, the LLC800/PS system has a strong resistance to interference. This work can provide technical support for the preparation of high-performance adsorption-catalytic biochar and the development of high-performance activation materials for persulfate.
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Tahir M, Shahid M, Nawaz F, Ahmad I, Ijaz M, Umer Farooq AB, Akram M, Khalid U, Naqqash T, Mehmood S, Mubeen M, Sarfaraz M, Abbas Y. Efficacy of organic‐based carrier material for plant beneficial rhizobacteria application in okra under normal and salt‐affected soil conditions. J Appl Microbiol 2022; 133:943-959. [DOI: 10.1111/jam.15589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/31/2022] [Accepted: 04/21/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Muhammad Tahir
- Department of Environmental Sciences COMSATS University Islamabad Vehari Campus
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology Government College University Faisalabad 38000 Pakistan
| | - Farrukh Nawaz
- College of Agriculture Bahauddin Zakariya University, Bahadur Sub‐Campus Layyah Pakistan
| | - Iftikhar Ahmad
- Department of Environmental Sciences COMSATS University Islamabad Vehari Campus
| | - Muhammad Ijaz
- College of Agriculture Bahauddin Zakariya University, Bahadur Sub‐Campus Layyah Pakistan
| | | | - Muhammad Akram
- Department of Environmental Sciences COMSATS University Islamabad Vehari Campus
| | - Umaira Khalid
- College of Agriculture Bahauddin Zakariya University, Bahadur Sub‐Campus Layyah Pakistan
| | - Tahir Naqqash
- Institute of Molecular Biology and Biotechnology Bahauddin Zakariya University Multan 60800 Pakistan
| | - Shehzad Mehmood
- Department of Environmental Sciences COMSATS University Islamabad Vehari Campus
| | - Muhammad Mubeen
- Department of Environmental Sciences COMSATS University Islamabad Vehari Campus
| | - Muhammad Sarfaraz
- Department of Environmental Sciences COMSATS University Islamabad Vehari Campus
| | - Yasir Abbas
- Functional Materials Laboratory (FML) School of Materials Science and Engineering Xi’an University of Architecture and Technology, Xi’an, Shaanxi, 710055 China
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Amelioration of disulfonated Acid Red and hexavalent chromium phytotoxic effects on Triticum aestivum using bioremediating and plant growth-promoting Klebsiella pneumoniae SK1. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2021. [DOI: 10.22207/jpam.15.3.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Bacterial strain identified as Klebsiella pneumoniae SK1, based on 16S rDNA sequence study, was isolated from a textile mill discharge point at Dada Nagar industrial area in Kanpur, India in media containing 100 µg/ml each of disulfonated azo dye Acid Red 249 (AR) and hexavalent chromium [Cr(VI)]. SK1 is efficient in the concomitant decolorization and reduction of 100 µg/ml toxic AR and Cr(VI) respectively in 48 h under microaerophilic conditions. The efficacy of AR decolorization was found to be preeminent in static conditions, 37°C, 2-4% salinity and 7-9 pH range. 99% decolorization for initial AR concentration of 100 µg/ml in 48 h, and 91% for 250 µg/ml and 77% for 500 µg/ml was recorded in 72 h respectively in the presence of 100 µg/ml Cr(VI). Significant reductive changes in spectroscopic absorption spectra were observed for SK1 treated AR+Cr(VI) amended media with respect to controls. FITR spectroscopy was used to ascertain the breakage of the azo dye bond and the formation of biodegradative metabolites. Additionally, SK1 was found to be positive for indole acetic acid, ammonia, phosphate and potassium solubilization and biofilm formation. In plant bioassay, in vitro SK1 treated AR+Cr(VI) TSB media was used to treat Triticum aestivum in the soil environment. In comparison to untreated control, plants treated with bioremediation media shows increased percent germination, root and shoot length with a complete reversal of phytotoxic effects of the AR+Cr(VI) treated plants. In this study, environmental K. pneumoniae SK1 shows concomitant azo dye and Cr(VI) remediation with plant growth-promoting activity.
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Tahir M, Imran M, Nawaz F, Shahid M, Naeem MA, Ahmad I, Akram M, Khalid U, Farooq ABU, Bakhat HF, Kamran M, Shah ZA. Effects of Bacillus sp. MR-1/2 and magnetite nanoparticles on yield improvement of rice by urea fertilizer under different watering regimes. J Appl Microbiol 2021; 131:2433-2447. [PMID: 33896080 DOI: 10.1111/jam.15110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/17/2021] [Accepted: 04/17/2021] [Indexed: 11/27/2022]
Abstract
AIMS The present research aimed to examine the use of magnetite nanoparticles (MNPs) in combination with phyto-beneficial rhizobacterium (PhBR) for improvement of applied N recovery (ANR) from urea fertilizer in rice grown under deficient and optimum watering conditions. METHODS AND RESULTS The Bacillus sp. MR-1/2 was positive for acetylene reduction, phosphate solubilization and ACC deaminase activity at temperature ranges 35-45°C. In a pot experiment, urea, MNPs and Bacillus sp. MR-1/2 were applied either alone or in combination to rice plants grown in pots under water deficit and optimal watering conditions. Combined application of urea, MNPs and Bacillus sp. MR-1/2 increased the plant N content and ANR by 27 and 65%, respectively, over their respective control values in rice grown under optimum watering conditions, whereas these increases were 27 and 41%, respectively, in rice grown under water deficit conditions. This treatment also increased the kernel weight and plant dry matter by 36 and 60%, respectively, over control (urea alone) values in rice grown under water deficit conditions, whereas these increases were 31 and 21·8%, respectively, in rice grown under optimum watering conditions. Values of malondialdehyde (MDA) contents, ascorbate peroxidase (APX), catalase and ethylene concentration were higher in control treatment under both the watering regimes. The application of Bacillus sp. MR-1/2 either alone or in combination with MNPs and urea reduced MDA contents, APX, catalase and ethylene production in the rice plants. CONCLUSION The combined application of MNPs+Bacillus sp. MR-1/2 reduced the N losses from applied urea, increased N uptake and ANR in rice, decreased MDA contents, APX and catalase activity and ethylene level in rice grown under deficit and optimum water conditions. SIGNIFICANCE AND IMPACT OF THE STUDY The application of MNPs together with Bacillus sp. MR-1/2 may help to increase ANR and rice productivity under water deficit conditions with low cost of production.
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Affiliation(s)
- M Tahir
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - M Imran
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - F Nawaz
- Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan
| | - M Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - M A Naeem
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - I Ahmad
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - M Akram
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - U Khalid
- Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan
| | - A B U Farooq
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - H F Bakhat
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - M Kamran
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
| | - Z A Shah
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Punjab, Pakistan
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Abstract
Knowledge of the agricultural soil microbiota, of the microbial consortia that comprise it, and the promotion of agricultural practices that maintain and encourage them, is a promising way to improve soil quality for sustainable agriculture and to provide food security. Although numerous studies have demonstrated the positive effects of beneficial soil microorganisms on crop yields and quality, the use of microbial consortia in agriculture remains low. Microbial consortia have more properties than an individual microbial inoculum, due to the synergy of the microorganisms that populate them. This review describes the main characteristics, ecosystem functions, crop benefits, and biotechnological applications of microbial consortia composed of arbuscular mycorrhizal fungi (AMF), plant growth-promoting rhizobacteria (PGPR), and Actinobacteria, to promote the restoration of agricultural soils and, consequently, the quality and health of agricultural crops. The aim is to provide knowledge that will contribute to the development of sustainable and sufficiently productive agriculture, which will adapt in a good way to the pace of the growing human population and to climate change.
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Ahmed T, Noman M, Shahid M, Niazi MBK, Hussain S, Manzoor N, Wang X, Li B. Green synthesis of silver nanoparticles transformed synthetic textile dye into less toxic intermediate molecules through LC-MS analysis and treated the actual wastewater. ENVIRONMENTAL RESEARCH 2020; 191:110142. [PMID: 32898565 DOI: 10.1016/j.envres.2020.110142] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/07/2020] [Accepted: 08/24/2020] [Indexed: 05/02/2023]
Abstract
The illegal disposal of waste from textile industries having recalcitrant pollutants is a worldwide problem with more severity in developing nations. We used an ecofriendly method to synthesize silver nanoparticles (AgNPs) from a locally-isolated bacterial strain Bacillus marisflavi TEZ7 and employed them as photocatalysts to degrade not only synthetic azo dyes but also actual textile effluents followed by phytotoxicity evaluation and identification of degradation molecules. The strain TEZ7 was taxonomically identified through the 16S rRNA gene sequence analysis. Biogenic AgNPs were characterized for stabilizing molecules, crystal structure, size, shape and elemental composition by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. The photocatalytic degradation efficiency of biogenic AgNPs for three azo dyes such as Direct Blue-1, Methyl Red, and Reactive Black-5 ranged between 54.14 and 96.92% after 5 h of sunlight exposure at a concentration of 100 mg/L. Moreover, the actual wastewater treatment analysis revealed that the 100 mg/L dose of AgNPs significantly decreased the concentration of various physico-chemical parameters of textile effluents such as pH, EC, chlorides, sulphates, hardness, BOD, COD, TSS and TDS. Furthermore, six intermediate molecules of methyl red degradation were identified by LC-MS and it was established by a pot study that these degradation molecules have no phytotoxic effects on rice plants. It was concluded that the AgNPs can be used as an efficient and low-cost strategy for the degradation of azo dyes containing textile wastewaters.
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Affiliation(s)
- Temoor Ahmed
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, 310058, Hangzhou, China; Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Muhammad Noman
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, 310058, Hangzhou, China; Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan.
| | - Muhammad Bilal Khan Niazi
- School of Chemical and Materials Engineering (SCME), National University of Sciences & Technology (NUST), Sector H-12, 44000, Islamabad, Pakistan
| | - Sabir Hussain
- Department of Environmental Science & Engineering, Government College University, Faisalabad, 38000, Pakistan
| | - Natasha Manzoor
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Xiaoxuan Wang
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, 310058, Hangzhou, China
| | - Bin Li
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, 310058, Hangzhou, China.
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11
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Goud BS, Cha HL, Koyyada G, Kim JH. Augmented Biodegradation of Textile Azo Dye Effluents by Plant Endophytes: A Sustainable, Eco-Friendly Alternative. Curr Microbiol 2020; 77:3240-3255. [PMID: 32951066 DOI: 10.1007/s00284-020-02202-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/04/2020] [Indexed: 01/02/2023]
Abstract
Textile industry consumes a large proportion of available water and releases huge amounts of toxic azo dye effluents, leading to an inevitable situation of acute environmental pollution that has been a significant threat to mankind. Decolorization or detoxification of harmful azo dyes has become a global priority to overcome the disastrous consequences and salvage the ecosystem. Biodegradation of textile azo dyes by endophytes stands to be a lucrative and viable alternative over conventional physico-chemical methods, owing to their eco-friendliness, cost-competitive and non-toxic nature. Especially, plant endophytic microbes exhibit promising biodegradation potential which has wired up the effective removal of textile azo dyes, attributing to their ability to produce dye degrading enzymes, laccases, peroxidases and azoreductases. Although both bacterial and fungal endophytes have been tried for azo dye degradation, endophytic fungi find broader application over bacteria. Despite of the advancements made in microbe-mediated biodegradation, there is still a need to fill the gap in lab to in situ translation of biodegradation research. This review concisely accentuates the xenobiotics of textile azo dyes and microbial mechanisms of biodegradation of textile azo dyes, positing plant endophytic community, especially bacterial and fungal endophytes as the potential dye degraders, highlighting currently reported dye degrading endophytic species.
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Affiliation(s)
- Burragoni Sravanthi Goud
- Department of Biotechnology, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
| | - Ha Lim Cha
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea
| | - Ganesh Koyyada
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
| | - Jae Hong Kim
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
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Abbas A, Mushtaq A, Cheema AI, Mahmood F, Khan MA, Naqqash T, Khurshid M, Manzoor I, Muhammad S, Shahid M. Heterologous expression of azoreductase-encoding gene azrS of Bacillus sp. MR-1/2 for enhanced azo dye decolorization and wastewater treatment. Arch Microbiol 2020; 202:2135-2145. [PMID: 32519019 DOI: 10.1007/s00203-020-01940-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/22/2020] [Accepted: 06/04/2020] [Indexed: 11/26/2022]
Abstract
In Pakistan, 55% of textile exports are contributed by textile-units of Faisalabad. The effluents of these textile units, being discharged without any treatment, contain the contamination of a huge amount of synthetic azo dyes. The objective of the current research was to evaluate the contribution of an azoreductase-encoding gene (azrS) from a pre-characterized azo dye decolorizing bacterial strain Bacillus sp. MR-1/2 in a high copy number host system (pUC19-T7-Top-T) of Escherichia coli strain DH5α followed by in-silico prediction of azoreductase enzyme (AzrS) function. The recombinant cells that contained azrS had a significantly higher rate of color removal in congo red and reactive black-5 dyes when compared to wild-type MR-1/2 and E. coli DH5α after 72 h of incubation. Moreover, we were able to show that the recombinant strain significantly reduced the values of all tested parameters (pH, EC, turbidity, TSS, and COD) in actual wastewater. In support of our results, it was also predicted through bioinformatics analysis that the deduced azoreductase protein of strain MR-1/2 is linked with the dye decolorization ability of the strain through NAD(P)H-ubiquinone: oxidoreductase activity. Furthermore, we also found that the deduced protein resembled closely related proteins of protein databank in many features, yet some unique features were predicted in the enzyme activity of strain MR-1/2. It was concluded that the recombinant strain could be examined in pilot-scale experiments for textile wastewater treatment.
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Affiliation(s)
- Ali Abbas
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Aqsa Mushtaq
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Ayesha Iftikhar Cheema
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Faisal Mahmood
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan
| | - Muhammad Asaf Khan
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Tahir Naqqash
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Mohsin Khurshid
- Department of Microbiology, Government College University, Faisalabad, 38000, Pakistan
| | - Irfan Manzoor
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Sher Muhammad
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, 38000, Pakistan.
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Mahmood F, Shahid M, Hussain S, Haider MZ, Shahzad T, Ahmed T, Noman M, Rasheed F, Khan MB. Bacillus firmus strain FSS2C ameliorated oxidative stress in wheat plants induced by azo dye (reactive black-5). 3 Biotech 2020; 10:40. [PMID: 31988834 PMCID: PMC6952483 DOI: 10.1007/s13205-019-2031-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 12/22/2019] [Indexed: 01/24/2023] Open
Abstract
This study was conducted to determine the ability of a bacterial strain FSS2C to ameliorate growth of wheat plants grown under induced stress of reactive black-5 (RB-5). The strain was taxonomically identified as Bacillus firmus on the basis of its 16S rRNA gene sequence analysis. The B. firmus FSS2C was found physiologically potent in phosphate solubilization, indole-3-acetic acid production and ammonia synthesis in the presence of varying concentrations of azo dye RB-5. Moreover, it decolorized RB-5 in vitro with the maximum decolorization (%) found at pH 7 and 30 °C. Inoculation of wheat plants, growing under stress induced by RB-5 dye, with rifampicin-resistant derivatives of the strain FSS2C substantially reduced the cellular oxidative stress, thereby resulting in higher plant biomass as compared to non-inoculated plants. Similarly, the inoculated plants revealed higher nutrient content in shoots as compared to non-inoculated ones. It was concluded that B. firmus strain FSS2C alleviated the oxidative stress impairment caused by reactive black-5 in wheat plants. Therefore, the strain can be used as bio-inoculant in wastewater irrigated soils.
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Affiliation(s)
- Faisal Mahmood
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000 Pakistan
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Sabir Hussain
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000 Pakistan
| | | | - Tanvir Shahzad
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000 Pakistan
| | - Temoor Ahmed
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Muhammad Noman
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Fahad Rasheed
- Department of Forestry and Range Management, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Bismillah Khan
- Department of Agronomy, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan
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