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Tong Y, Li Y, Qin W, Wu S, Xu W, Jin P, Zheng Z. New insight into the metabolic mechanism of a novel lipid-utilizing and denitrifying bacterium capable of simultaneous removal of nitrogen and grease through transcriptome analysis. Front Microbiol 2023; 14:1258003. [PMID: 37965562 PMCID: PMC10642853 DOI: 10.3389/fmicb.2023.1258003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/17/2023] [Indexed: 11/16/2023] Open
Abstract
Introduction Issues related to fat, oil, and grease from kitchen waste (KFOG) in lipid-containing wastewater are intensifying globally. We reported a novel denitrifying bacterium Pseudomonas CYCN-C with lipid-utilizing activity and high nitrogen-removal efficiency. The aim of the present study was aim to explore the metabolic mechanism of the simultaneous lipid-utilizing and denitrifying bacterium CYCN-C at transcriptome level. Methods We comparatively investigated the cell-growth and nitrogen-removal performances of newly reported Pseudomonas glycinae CYCN-C under defined cultivation conditions. Transcriptome analysis was further used to investigate all pathway genes involved in nitrogen metabolism, lipid degradation and utilization, and cell growth at mRNA levels. Results CYCN-C could directly use fat, oil, and grease from kitchen waste (KFOG) as carbon source with TN removal efficiency of 73.5%, significantly higher than that (60.9%) with sodium acetate. The change levels of genes under defined KFOG and sodium acetate were analyzed by transcriptome sequencing. Results showed that genes cyo, CsrA, PHAs, and FumC involved in carbon metabolism under KFOG were significantly upregulated by 6.9, 0.7, 26.0, and 19.0-folds, respectively. The genes lipA, lipB, glpD, and glpK of lipid metabolic pathway were upregulated by 0.6, 0.4, 21.5, and 1.3-folds, respectively. KFOG also improved the denitrification efficiency by inducing the expression of the genes nar, nirB, nirD, and norR of denitrification pathways. Conclusion In summary, this work firstly provides valuable insights into the genes expression of lipid-utilizing and denitrifying bacterium, and provides a new approach for sewage treatment with reuse of KFOG wastes.
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Affiliation(s)
- Yaobin Tong
- School of Environmental & Resource, Zhejiang A & F University, Hangzhou, China
| | - Yiyi Li
- Zhejiang Sunda Public Environmental Protection Co., Ltd., Hangzhou, China
| | - Wenpan Qin
- Zhejiang Sunda Public Environmental Protection Co., Ltd., Hangzhou, China
| | - Shengchun Wu
- School of Environmental & Resource, Zhejiang A & F University, Hangzhou, China
- Zhejiang Sunda Public Environmental Protection Co., Ltd., Hangzhou, China
| | - Weiping Xu
- Zhejiang Sunda Public Environmental Protection Co., Ltd., Hangzhou, China
| | - Peng Jin
- College of Food and Health, Zhejiang A & F University, Hangzhou, China
| | - Zhanwang Zheng
- School of Environmental & Resource, Zhejiang A & F University, Hangzhou, China
- Zhejiang Sunda Public Environmental Protection Co., Ltd., Hangzhou, China
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Biodegradation of Petroleum Hydrocarbons by Drechsleraspicifera Isolated from Contaminated Soil in Riyadh, Saudi Arabia. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196450. [PMID: 36234987 PMCID: PMC9572601 DOI: 10.3390/molecules27196450] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/02/2022] [Accepted: 09/26/2022] [Indexed: 11/14/2022]
Abstract
Currently, the bioremediation of petroleum hydrocarbons employs microbial biosurfactants because of their public acceptability, biological safety, and low cost. These organisms can degrade or detoxify organic-contaminated areas, such as marine ecosystems. The current study aimed to test the oil-biodegradation ability of the fungus Drechslera spicifera, which was isolated from contaminated soil samples in Riyadh, Saudi Arabia. We used hydrocarbon tolerance, scanning electron microscopy, DCPIP, drop-collapse, emulsification activity, recovery of biosurfactants, and germination assays to assess the biodegradation characteristics of the D. spicifera against kerosene, crude, diesel, used, and mixed oils. The results of DCPIP show that the highest oxidation (0.736 a.u.) was induced by crude oil on the 15th day. In contrast, kerosene and used oil had the highest measurements in emulsification activity and drop-collapse assays, respectively. Meanwhile, crude and used oils produced the highest amounts of biosurfactants through acid precipitation and solvent extraction assays. Furthermore, the biosurfactants stimulated the germination of tomato seeds by more than 50% compared to the control. These findings highlight the biodegradation ability of D. spicifera, which has been proven in the use of petroleum oils as the sole source of carbon. That might encourage further research to demonstrate its application in the cleaning of large, contaminated areas.
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Mukhia S, Kumar A, Kumari P, Kumar R, Kumar S. Multilocus sequence based identification and adaptational strategies of Pseudomonas sp. from the supraglacial site of Sikkim Himalaya. PLoS One 2022; 17:e0261178. [PMID: 35073328 PMCID: PMC8786180 DOI: 10.1371/journal.pone.0261178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 11/26/2021] [Indexed: 11/18/2022] Open
Abstract
Microorganisms inhabiting the supraglacial ice are biotechnologically significant as they are equipped with unique adaptive features in response to extreme environmental conditions of high ultraviolet radiations and frequent freeze-thaw. In the current study, we obtained eleven strains of Pseudomonas from the East Rathong supraglacial site in Sikkim Himalaya that showed taxonomic ambiguity in terms of species affiliation. Being one of the most complex and diverse genera, deciphering the correct taxonomy of Pseudomonas species has always been challenging. So, we conducted multilocus sequence analysis (MLSA) using five housekeeping genes, which concluded the taxonomic assignment of these strains to Pseudomonas antarctica. This was further supported by the lesser mean genetic distances with P. antarctica (0.73%) compared to P. fluorescens (3.65%), and highest ANI value of ~99 and dDDH value of 91.2 of the representative strains with P. antarctica PAMC 27494. We examined the multi-tolerance abilities of these eleven Pseudomonas strains. Indeed the studied strains displayed significant tolerance to freezing for 96 hours compared to the mesophilic control strain, while except for four strains, seven strains exhibited noteworthy tolerance to UV-C radiations. The genome-based findings revealed many cold and radiation resistance-associated genes that supported the physiological findings. Further, the bacterial strains produced two or more cold-active enzymes in plate-based assays. Owing to the polyadaptational attributes, the strains ERGC3:01 and ERGC3:05 could be most promising for bioprospection.
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Affiliation(s)
- Srijana Mukhia
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Anil Kumar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR- Human Resource Development Centre (CSIR-HRDC), Ghaziabad, Uttar Pradesh, India
| | - Poonam Kumari
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
| | - Rakshak Kumar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- * E-mail:
| | - Sanjay Kumar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
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Fathi Z, Tramontin LRR, Ebrahimipour G, Borodina I, Darvishi F. Metabolic engineering of Saccharomyces cerevisiae for production of β-carotene from hydrophobic substrates. FEMS Yeast Res 2020; 21:6041025. [PMID: 33332529 PMCID: PMC7811509 DOI: 10.1093/femsyr/foaa068] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 12/15/2020] [Indexed: 12/14/2022] Open
Abstract
β-Carotene is a yellow–orange–red pigment used in food, cosmetics and pharmacy. There is no commercial yeast-based process for β-carotene manufacturing. In this work, we engineered the baker's yeast Saccharomyces cerevisiae by expression of lipases and carotenogenic genes to enable the production of β-carotene on hydrophobic substrates. First, the extracellular lipase (LIP2) and two cell-bound lipases (LIP7 and LIP8) from oleaginous yeast Yarrowia lipolytica were expressed either individually or in combination in S. cerevisiae. The engineered strains could grow on olive oil and triolein as the sole carbon source. The strain expressing all three lipases had ∼40% lipid content per dry weight. Next, we integrated the genes encoding β-carotene biosynthetic pathway, crtI, crtYB and crtE from Xanthophyllomyces dendrorhous. The resulting engineered strain bearing the lipases and carotenogenic genes reached a titer of 477.9 mg/L β-carotene in yeast peptone dextrose (YPD) medium supplemented with 1% (v/v) olive oil, which was 12-fold higher than an analogous strain without lipases. The highest β-carotene content of 46.5 mg/g DCW was obtained in yeast nitrogen base (YNB) medium supplemented with 1% (v/v) olive oil. The study demonstrates the potential of applying lipases and hydrophobic substrate supplementation for the production of carotenoids in S. cerevisiae.
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Affiliation(s)
- Zahra Fathi
- Department of Microbiology and Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | | | - Gholamhossein Ebrahimipour
- Department of Microbiology and Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Irina Borodina
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Denmark
| | - Farshad Darvishi
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran.,Microbial Biotechnology and Bioprocess Engineering (MBBE) Group, Department of Microbiology, Faculty of Science, University of Maragheh, Maragheh, Iran
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Gao LL, Lu YC, Zhang JL, Li J, Zhang JD. Biotreatment of restaurant wastewater with an oily high concentration by newly isolated bacteria from oily sludge. World J Microbiol Biotechnol 2019; 35:179. [DOI: 10.1007/s11274-019-2760-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 11/05/2019] [Indexed: 11/24/2022]
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Lee H, Lee DW, Kwon SL, Heo YM, Jang S, Kwon BO, Khim JS, Kim GH, Kim JJ. Importance of functional diversity in assessing the recovery of the microbial community after the Hebei Spirit oil spill in Korea. ENVIRONMENT INTERNATIONAL 2019; 128:89-94. [PMID: 31035114 DOI: 10.1016/j.envint.2019.04.039] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/28/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Over 10 years after the Hebei Spirit oil spill (HSOS), the concentrations of pollutants, such as TPH and PAHs, in spilled crude oil have recovered to background levels, but in some areas, the environment has not fully recovered. In particular, PAHs were more resistant to degradation, and their persistence could have deleterious impacts on the sediment ecosystem. This study aimed to evaluate the microbial recovery of coastal sediments from the HSOS by analyzing the structure and diversity of the microbial community and its functional contribution to PAHs degradation. High-throughput sequencing on the MiSeq platform was conducted using tidal flat sediments collected in 2014 and 2016 from the area contaminated by the HSOS. The microbial recovery was evaluated by various diversity factors, including microbial composition and structure and functional diversity based on PICRUSt analysis. The abundance of microbial taxa associated with TPH degradation was higher in 2014 than that in 2016, but the taxa associated with PAHs degradation were similar between years. These results are consistent with the dynamics of microbes associated with the fate of pollutants, and they also showed similar tendency in functional profiles. That is, even if the pollutants are completely degraded, the microbial community has not yet completely recovered from the HSOS. The evaluation of microbial ecosystems in contaminated environments should consider both the fate of pollutants and the dynamics of microbial species that make functional contributions to the degradation of pollutants.
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Affiliation(s)
- Hanbyul Lee
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Dong Wan Lee
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Sun Lul Kwon
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Young Mok Heo
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Seokyoon Jang
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Bong-Oh Kwon
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Jong Seong Khim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Gyu-Hyeok Kim
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Jae-Jin Kim
- Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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Pal M, Swarnkar MK, Dhar H, Chhibber S, Gulati A. Genome assembly of Chryseobacterium sp. strain IHBB 10212 from glacier top-surface soil in the Indian trans-Himalayas with potential for hydrolytic enzymes. GENOMICS DATA 2017; 13:46-49. [PMID: 28725557 PMCID: PMC5503833 DOI: 10.1016/j.gdata.2017.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/24/2017] [Accepted: 06/06/2017] [Indexed: 11/29/2022]
Abstract
The cold-active esterases are gaining importance due to their catalytic activities finding applications in chemical industry, food processes and detergent industry as additives, and organic synthesis of unstable compounds as catalysts. In the present study, the complete genome sequence of 4,843,645 bp with an average 34.08% G + C content and 4260 protein-coding genes are reported for the low temperature-active esterase-producing novel strain of Chrysobacterium isolated from the top-surface soil of a glacier in the cold deserts of the Indian trans-Himalayas. The genome contained two plasmids of 16,553 and 11,450 bp with 40.54 and 40.37% G + C contents, respectively. Several genes encoding the hydrolysis of ester linkages of triglycerides into fatty acids and glycerol were predicted in the genome. The annotation also predicted the genes encoding proteases, lipases, amylases, β-glucosidases, endoglucanases and xylanases involved in biotechnological processes. The complete genome sequence of Chryseobacterium sp. strain IHBB 10212 and two plasmids have been deposited vide accession numbers CP015199, CP015200 and CP015201 at DDBJ/EMBL/GenBank.
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Affiliation(s)
- Mohinder Pal
- CSIR-Institute of Himalayan Bioresource Technology, Palampur, HP 176 061, India
| | | | - Hena Dhar
- CSIR-Institute of Himalayan Bioresource Technology, Palampur, HP 176 061, India
| | - Sanjay Chhibber
- Department of Microbiology, Panjab University, Chandigarh 160 014, India
| | - Arvind Gulati
- CSIR-Institute of Himalayan Bioresource Technology, Palampur, HP 176 061, India
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Liu B, Ju M, Liu J, Wu W, Li X. Isolation, identification, and crude oil degradation characteristics of a high-temperature, hydrocarbon-degrading strain. MARINE POLLUTION BULLETIN 2016; 106:301-7. [PMID: 26994837 DOI: 10.1016/j.marpolbul.2015.09.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 09/24/2015] [Accepted: 09/30/2015] [Indexed: 05/15/2023]
Abstract
In this work, a hydrocarbon-degrading bacterium Y-1 isolated from petroleum contaminated soil in the Dagang Oilfield was investigated for its potential effect in biodegradation of crude oil. According to the analysis of 16S rRNA sequences, strain Y-1 was identified as Bacillus licheniformis. The growth parameters such as pH, temperature, and salinity were optimised and 60.2% degradation of crude oil removal was observed in 5days. The strain Y-1 showed strong tolerance to high salinity, alkalinity, and temperature. Emplastic produced by strain Y-1 at high temperatures could be applied as biosurfactant. Gas chromatography analysis demonstrated that the strain Y-1 efficiently degraded different alkanes from crude oil, and the emplastic produced by strain Y-1 promoted the degradation rates of long-chain alkanes when the temperature increased to 55°C. Therefore, strain Y-1 would play an important role in the area of crude oil contaminant bioremediation even in some extreme conditions.
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Affiliation(s)
- Boqun Liu
- Tianjin Biomass Solid Waste Reclamation Technology and Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Meiting Ju
- Tianjin Biomass Solid Waste Reclamation Technology and Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China.
| | - Jinpeng Liu
- Tianjin Biomass Solid Waste Reclamation Technology and Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China
| | - Wentao Wu
- Tianjin Biomass Solid Waste Reclamation Technology and Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China; Department of Agricultural and Biological Engineering, Pennsylvania State University, University Park, PA 16801, United States
| | - Xiaojing Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, No 94 Weijin Road, PR China
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Sun W, Dong Y, Gao P, Fu M, Ta K, Li J. Microbial communities inhabiting oil-contaminated soils from two major oilfields in Northern China: Implications for active petroleum-degrading capacity. J Microbiol 2015; 53:371-8. [PMID: 26025169 DOI: 10.1007/s12275-015-5023-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/20/2015] [Accepted: 04/20/2015] [Indexed: 11/25/2022]
Abstract
Although oilfields harbor a wide diversity of microorganisms with various metabolic potentials, our current knowledge about oil-degrading bacteria is limited because the vast majority of oil-degrading bacteria remain uncultured. In the present study, microbial communities in nine oil-contaminated soils collected from Daqing and Changqing, two of the largest oil fields in China, were characterized through highthroughput sequencing of 16S rRNA genes. Bacteria related to the phyla Proteobacteria and Actinobacteria were dominant in four and three samples, respectively. At the genus level, Alkanindiges, Arthrobacter, Pseudomonas, Mycobacterium, and Rhodococcus were frequently detected in nine soil samples. Many of the dominant genera were phylogenetically related to the known oil-degrading species. The correlation between physiochemical parameters within the microbial communities was also investigated. Canonical correspondence analysis revealed that soil moisture, nitrate, TOC, and pH had an important impact in shaping the microbial communities of the hydrocarbon-contaminated soil. This study provided an in-depth analysis of microbial communities in oilcontaminated soil and useful information for future bioremediation of oil contamination.
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Affiliation(s)
- Weimin Sun
- Department of Microbiology and Biochemistry, Rutgers University, New Brunswick, NJ, 08901, USA
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Al-Saleh E, Akbar A. Occurrence of Pseudomonas aeruginosa in Kuwait soil. CHEMOSPHERE 2015; 120:100-107. [PMID: 25014900 DOI: 10.1016/j.chemosphere.2014.06.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 06/16/2014] [Accepted: 06/16/2014] [Indexed: 06/03/2023]
Abstract
Environmentally ubiquitous bacteria such as Pseudomonas aeruginosa evolved mechanisms to adapt and prevail under diverse conditions. In the current investigation, strains of P. aeruginosa demonstrating high rates of crude oil utilization and tolerance to high concentrations of heavy metals were found in both crude oil-contaminated and uncontaminated sites in Kuwait, and were dominant in the contaminated sites. The incidence of P. aeruginosa in tested soils implies the definitive pattern of crude oil contamination in the selection of the bacterial population in petroleum-contaminated sites in Kuwait. Surprisingly, the unculturable P. aeruginosa in different soil samples showed significant high similarity coefficients based on 16S-RFLP analyses, implying that the unculturable fraction of existing bacterial population in environmental samples is more stable and, hence, reliable for phylogenetic studies compared to the culturable bacteria.
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Affiliation(s)
- Esmaeil Al-Saleh
- Microbiology Program, Department of Biological Sciences, Faculty of Science, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait.
| | - Abrar Akbar
- Microbiology Program, Department of Biological Sciences, Faculty of Science, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait
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Romanelli MG, Povolo S, Favaro L, Fontana F, Basaglia M, Casella S. Engineering Delftia acidovorans DSM39 to produce polyhydroxyalkanoates from slaughterhouse waste. Int J Biol Macromol 2014; 71:21-7. [DOI: 10.1016/j.ijbiomac.2014.03.049] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 11/26/2022]
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Priyaja P, Jayesh P, Philip R, Bright Singh IS. Pyocyanin induced in vitro oxidative damage and its toxicity level in human, fish and insect cell lines for its selective biological applications. Cytotechnology 2014; 68:143-155. [PMID: 25091858 DOI: 10.1007/s10616-014-9765-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 06/28/2014] [Indexed: 10/24/2022] Open
Abstract
Pyocyanin is a redox active phenazine pigment produced by Pseudomonas aeruginosa, with broad antibiotic activity having pharmacological, aquaculture, agriculture and industrial applications. In the present work cytotoxicity induced by pyocyanin is demonstrated in a human embryonic lung epithelial cell line (L-132), a rainbow trout gonad cell line (RTG-2) and a Spodoptera frugiperda pupal ovarian cell line (Sf9). For toxicity evaluation, cellular morphology, mitochondrial function (XTT), membrane leakage of lactate dehydrogenase, neutral red uptake, affinity of electrostatic binding of protein with sulforhodamine B dyes, glucose metabolism, and reactive oxygen species, were assessed. Results showed that higher pyocyanin concentration is required for eliciting cytotoxicity in L-132, RTG-2 and Sf9. The microscopic studies demonstrated that the cell lines exposed to pyocyanin at higher concentrations alone showed morphological changes such as clumping and necrosis. Among the three cell lines L-132 showed the highest response to pyocyanin than the others. In short, pyocyanin application at concentrations ranging from 5 to 10 mg l(-1) were not having any pathological effect in eukaryotic systems and can be used as drug of choice in aquaculture against vibrios in lieu of conventional antibiotics and as biocontrol agent against fungal and bacterial pathogens in agriculture. This is besides its industrial and pharmacological applications.
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Affiliation(s)
- P Priyaja
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, India
| | - P Jayesh
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, India
| | - Rosamma Philip
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, India
| | - I S Bright Singh
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, 682016, India.
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Azhdarpoor A, Mortazavi B, Moussavi G. Oily wastewaters treatment using Pseudomonas sp. isolated from the compost fertilizer. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2014; 12:77. [PMID: 24876932 PMCID: PMC4038401 DOI: 10.1186/2052-336x-12-77] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 04/16/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Discharging the oily wastewater in the environment causes serious problems, because of the oil compounds and organic materials presence. Applying biological methods using the lipase enzyme producer microorganisms can be an appropriate choice for treatment of these wastewaters. The aim of this study is to treat those oil wastewaters having high concentration of oil by applying lipase enzyme producer bacteria. MATERIALS AND METHODS Oil concentration measurement was conducted using the standard method of gravimetric and the wastewater under study was synthetically made and contained olive, canola and sunflower oil. The strain used in this study was Pseudomonas strain isolated from compost fertilizer. The oil under study had concentration of 1.5 to 22 g/l. RESULTS The oil removal amount in concentrations lower than 8.4 g/l was over 95 ± 1.5%. Increase of the oil's concentration to 22 g/l decreases the amount of removal in retention time of 44 hours to 85 ± 2.5%. The best yield of removing this strain in retention time of 44 hours and temperature of 30°C was achieved using Ammonium Nitrate as the nitrogen resource which yield was about 95 percent. CONCLUSION The findings of the research showed that Pseudomonas bacteria isolated from the compost fertilizer can degrade high concentration oils.
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Affiliation(s)
- Abooalfazl Azhdarpoor
- Department of Environment Health Engineering, Faculty of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Bagher Mortazavi
- Department of Environment Health Engineering, Faculty of Medical, Tarbiat Modares University, Tehran, Iran
| | - Gholamreza Moussavi
- Department of Environment Health Engineering, Faculty of Medical, Tarbiat Modares University, Tehran, Iran
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Anbu P. CHARACTERIZATION OF AN EXTRACELLULAR LIPASE BYPseudomonas koreensisBK-L07 ISOLATED FROM SOIL. Prep Biochem Biotechnol 2013; 44:266-80. [DOI: 10.1080/10826068.2013.812564] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Verma S, Saxena J, Prasanna R, Sharma V, Nain L. Medium optimization for a novel crude-oil degrading lipase from Pseudomonas aeruginosa SL-72 using statistical approaches for bioremediation of crude-oil. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2012. [DOI: 10.1016/j.bcab.2012.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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A study of the efficiency of edible oils degraded in alkaline conditions by Pseudomonas aeruginosa SS-219 and Acinetobacter sp. SS-192 bacteria isolated from Japanese soil. World J Microbiol Biotechnol 2011; 28:841-8. [DOI: 10.1007/s11274-011-0880-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2011] [Accepted: 09/05/2011] [Indexed: 10/17/2022]
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Mukherjee S, Bardolui NK, Karim S, Patnaik VV, Nandy RK, Bag PK. Isolation and characterization of a monoaromatic hydrocarbon-degrading bacterium, Pseudomonas aeruginosa from crude oil. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2010; 45:1048-1053. [PMID: 20526934 DOI: 10.1080/10934529.2010.486328] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The present study reports on the isolation and characterization of a Pseudomonas aeruginosa strain PTz-5 from crude oil from oil field sampled in Assam, India. It was capable to utilize hexadecane, benzene or toluene as a sole source of carbon aerobically. Strain PTz-5 was able to produce extracellular lipase that catalyzed triglycerides to free fatty acid and glycerol. The lipase activity was stable in the temperature range of 40 to 60 degrees C. Strain PTz-5 avidly adhered to the surface of hydrocarbon droplets during their growth in liquid culture medium. These properties could play an essential role in hydrocarbon degradation. The results presented here highlight the metabolic versatility and hydrocarbon biodegradative capability of strain PTz-5, signifying its great potential for the bioremediation of various hydrocarbon-contaminated environments.
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Acinetobacter sp. Ud-4 efficiently degrades both edible and mineral oils: isolation and characterization. Curr Microbiol 2009; 60:203-9. [PMID: 19847483 DOI: 10.1007/s00284-009-9525-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2009] [Accepted: 10/06/2009] [Indexed: 10/20/2022]
Abstract
A novel Acinetobacter strain, Ud-4, possessing a strong capacity to degrade edible, lubricating, and heavy oil was isolated from seawater in a fishing port located in Toyama, Japan. It was identified by morphological and physiological analyses and 16S rDNA sequencing. This strain could utilize five types of edible oils (canola oil, olive oil, sesame oil, soybean oil, and lard), lubricating oil, and C-heavy oil as the sole carbon source for growth in M9 medium. The strain grew well and heavily degraded edible oils in Luria-Bertani medium during a 7-day culture at 25 degrees C; it also degraded all kinds of oils in artificial seawater medium for marine bacteria. Furthermore, this strain was capable of degrading almost all C10-C25 n-alkanes in C-heavy oil during a 4-week culture. Oligonucleotide primers specific to two catabolic genes involved in the degradation of n-alkanes (Acinetobacter sp. alkM) and triglyceride (Acinetobacter sp. lipA) allowed amplification of these genes in strain Ud-4. To our knowledge, this is the first report on the isolation of a bacterium that can efficiently degrade both edible and mineral oils.
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Matsuoka H, Miura A, Hori K. Symbiotic effects of a lipase-secreting bacterium, Burkholderia arboris SL1B1, and a glycerol-assimilating yeast, Candida cylindracea SL1B2, on triacylglycerol degradation. J Biosci Bioeng 2009; 107:401-8. [DOI: 10.1016/j.jbiosc.2008.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Revised: 11/16/2008] [Accepted: 12/03/2008] [Indexed: 11/29/2022]
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Olaniran AO, Pillay D, Pillay B. Aerobic biodegradation of dichloroethenes by indigenous bacteria isolated from contaminated sites in Africa. CHEMOSPHERE 2008; 73:24-29. [PMID: 18635246 DOI: 10.1016/j.chemosphere.2008.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2008] [Revised: 05/29/2008] [Accepted: 06/01/2008] [Indexed: 05/26/2023]
Abstract
The widespread use of tetrachloroethene (PCE) and trichloroethene (TCE) as dry cleaning solvents and degreasing agents for military and industrial applications has resulted in significant environmental contamination worldwide. Anaerobic biotransformation of PCE and TCE through reductive dechlorination frequently lead to the accumulation of dichloroethenes (DCEs), thus limiting the use of reductive dechlorination for the biotransformation of the compounds. In this study, seven bacteria indigenous to contaminated sites in Africa were characterized for DCE degradation under aerobic conditions. The specific growth rate constants of the bacterial isolates ranged between 0.346-0.552 d(-1) and 0.461-0.667 d(-1) in cis-DCE and trans-DCE, respectively. Gas chromatographic analysis revealed that up to 75% of the compounds were degraded within seven days with the degradation rate constants ranging between 0.167 and 0.198 d(-1). The two compounds were also observed to be significantly degraded, simultaneously, rather than sequentially, when present as a mixture. Phylogenetic analysis of the 16S rRNA gene sequences of the bacterial isolates revealed their identity as well as their relation to other environmentally-important bacteria. The observed biodegradation of DCEs may contribute to PCE and TCE removal at the aerobic fringe of groundwater plumes undergoing reductive dechlorination in contaminated sites.
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Affiliation(s)
- Ademola O Olaniran
- Discipline of Microbiology, Faculty of Science and Agriculture, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, South Africa.
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Kasana RC, Kaur B, Yadav SK. Isolation and identification of a psychrotrophic Acinetobacter sp. CR9 and characterization of its alkaline lipase. J Basic Microbiol 2008; 48:207-12. [PMID: 18506906 DOI: 10.1002/jobm.200700160] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Forty three psychrotrophic bacteria were isolated from soil samples collected from Chandra river in sub-alpine region of western Himalaya, India. Among these, 11 isolates were found positive for lipase production at low temperature. Of 11 isolates, CR9 produced largest zone of clearance on plate assay and was able to produce lipase under wide range of pH. The isolate CR9 was identified as Acinetobacter sp. based on morphological and physiochemical characterization and 16S rRNA gene sequencing analysis. According to 16S rRNA gene sequencing data the closest phylogenetic neighbor for strain CR9 was Acinetobacter lwoffii (98.9%). The partially purified lipase from strain CR9 exhibited maximum activity at temperature 40 degrees C and pH optima at 8.0. Cu(2+), Mo(2+), Mg(2+), Zn(2+), phenylmethanesulfonyl fluoride (PMSF), dithiothreitol (DTT) and beta-mercaptoethanol (2-ME) enhanced the enzyme activity, whereas Ca(2+) and ethylenediaminetetraacetic acid (EDTA) had inhibitory effect. Lipase hydrolyzed wide range of short chain fatty acid esters of p-nitrophenyl. The organism CR9 also hydrolyzed tributyrin, Tween 80, soybean oil, mustard oil and olive oil. The results highlight the relevance of unexplored microbes from cold environments of western Himalaya for the isolation of novel lipase producing bacteria.
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Affiliation(s)
- Ramesh Chand Kasana
- Hill Area Tea Science Division, Microbiology Laboratory, Institute of Himalayan Bioresource Technology (CSIR), Palampur, India.
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Amoozegar MA, Salehghamari E, Khajeh K, Kabiri M, Naddaf S. Production of an extracellular thermohalophilic lipase from a moderately halophilic bacterium, Salinivibrio sp. strain SA-2. J Basic Microbiol 2008; 48:160-7. [PMID: 18506896 DOI: 10.1002/jobm.200700361] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Fifty strains of moderately halophilic bacteria were isolated from various salty environments in Iran. A strain designated as SA-2 was shown to be the best producer of extracellular lipase and was selected for further studies. Biochemical and physiological characterization along with 16S rDNA sequence analysis placed SA-2 in the genus Salinivibrio. The optimum salt, pH, temperature and aeration for enzyme production were 0.1 M KCl, pH 8, 35 degrees C and 150 rpm, respectively. The enzyme production was synchronized bacterial growth and reached a maximum level during the early-stationary phase in the basal medium containing 1 M NaCl. Triacylglycerols enhanced lipase production, while carbohydrates had inhibitory effects on it. The maximum lipase activity was obtained at pH 7.5, 50 degrees C and CaCl(2) concentration of 0.01 M. The enzyme was stable at pH range of 7.5-8 and retained 90% of its activity at 80 degrees C for 30 min. Different concentrations of NaNO(3), Na(2)SO(4), KCl and NaCl had no affect on lipase stability for 3 h. These results suggest that the lipase secreted by Salinivibrio sp. strain SA-2 is industrially important from the perspective of its tolerance to a broad temperature range, its moderate thermoactivity and its high tolerance to a wide range of salt concentrations (0-3 M NaCl).
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Affiliation(s)
- Mohammad Ali Amoozegar
- Extremophiles Laboratory, Department of Microbiology, Faculty of Biology, College of Science, University of Tehran, Tehran, Iran.
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Ruchi G, Anshu G, Khare SK. Lipase from solvent tolerant Pseudomonas aeruginosa strain: production optimization by response surface methodology and application. BIORESOURCE TECHNOLOGY 2008; 99:4796-4802. [PMID: 17976982 DOI: 10.1016/j.biortech.2007.09.053] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Revised: 09/18/2007] [Accepted: 09/20/2007] [Indexed: 05/25/2023]
Abstract
Solvent tolerant Pseudomonas aeruginosa strain PseA has been studied for lipase activity. This strain has earlier been reported to be secreting alkaline and solvent stable protease. It produced an extra cellular lipase with suitable properties for detergent applications viz. (i) alkaline in nature, (ii) stability and compatibility towards bleach oxidants, surfactants and detergent formulations and (iii) resistant to proteolysis. Since the culture supernatant contains both protease and lipase which are together required in detergent formulations, enzymes from P. aeruginosa seem ideal for use as detergent additive. P. aeruginosa lipase exhibited remarkable stability in wide range of organic solvents at 25% (v/v) concentration. This property can be useful for solvent bioremediation and biotransformations in non-aqueous media. Media optimization for cost effective production of lipase was carried out by response surface methodology which led to 5.58-fold increase in lipase production (4580 IU/ml) over un-optimized media.
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Affiliation(s)
- Gaur Ruchi
- Chemistry Department, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110 016, India
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Wang J, Ma T, Zhao L, Lv J, Li G, Liang F, Liu R. PCR–DGGE method for analyzing the bacterial community in a high temperature petroleum reservoir. World J Microbiol Biotechnol 2008. [DOI: 10.1007/s11274-008-9694-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Matsumiya Y, Wakita D, Kimura A, Sanpa S, Kubo M. Isolation and characterization of a lipid-degrading bacterium and its application to lipid-containing wastewater treatment. J Biosci Bioeng 2007; 103:325-30. [PMID: 17502273 DOI: 10.1263/jbb.103.325] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Accepted: 01/09/2007] [Indexed: 11/17/2022]
Abstract
To construct an efficient lipid-containing wastewater treatment system, microorganisms that degrade lipids efficiently were isolated from various environmental sources. Strain DW2-1 showed the highest rate of degradation of 1% (w/v) salad oil among the isolated strains. Strain DW2-1 was identified as Burkholderia sp. and designated Burkholderia sp. DW2-1. The rate of degradation of salad oil, olive oil, sesame oil, and beef tallow by strain DW2-1 were 96.7%, 92.3%, 90.1% and 77.4%, respectively, during a 48-h cultivation. Strain DW2-1 grew well in a synthetic wastewater medium (>1 x 10(10) colony forming unit [CFU]/ml) between 20 degrees C and 38 degrees C, and its rate of degradation of salad oil was above 90% after a 48-h cultivation. The lipase and biosurfactant (BSF) activities of strain DW2-1 after a 48-h cultivation were 1720 U/l and 480 U/ml, respectively. In continuous cultures for lipid-containing wastewater treatment, DW2-1 was stably maintained and degraded more than 90% of salad oil during a 7-d cultivation.
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Affiliation(s)
- Yoshiki Matsumiya
- Department of Bioscience and Technology, Faculty of Science and Engineering, Ritsumeikan University, Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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Solaiman DKY, Ashby RD, Hotchkiss AT, Foglia TA. Biosynthesis of medium-chain-length poly(hydroxyalkanoates) from soy molasses. Biotechnol Lett 2006; 28:157-62. [PMID: 16489492 DOI: 10.1007/s10529-005-5329-2] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2005] [Accepted: 11/10/2005] [Indexed: 11/30/2022]
Abstract
Pseudomonas corrugata was selected from a screening process for the bioconversion of inexpensive soy molasses into medium-chain-length poly(hydroxyalkanoates) (mcl-PHA). We obtained yields of 1.5 g cell dry weight (CDW)/l culture with growth medium supplemented with 2% (w/v) soy molasses, and of an average of 3.4 g CDW/l with 5% (w/v) soy molasses. Crude PHAs were obtained at 5-17% of CDW. The most prominent repeat-unit monomers in the PHAs were 3-hydroxydodecanoate, 3-hydroxyoctanoate, 3-hydroxydodecanoate, and 3-hydroxytetradecenoate. This work represents the first description of fermentative mcl-PHA production from the soy molasses.
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Affiliation(s)
- Daniel K Y Solaiman
- Fats, Oils and Animal Coproducts Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania, 19038, USA.
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