Response of Heterotrophic Stream Biofilm Communities to a Gradient of Resources
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Novel Copper-Containing Membrane Monooxygenases (Cummos) Encoded by Alkane- Utilizing Betaproteobacteria
Lawrence Berkeley National Laboratory Recent Work Title Novel copper-containing membrane monooxygenases (CuMMOs) encoded by alkane- utilizing Betaproteobacteria. Permalink https://escholarship.org/uc/item/8z48x96q Journal The ISME journal, 14(3) ISSN 1751-7362 Authors Rochman, Fauziah F Kwon, Miye Khadka, Roshan et al. Publication Date 2020-03-01 DOI 10.1038/s41396-019-0561-2 Peer reviewed eScholarship.org Powered by the California Digital Library University of California 1 1 2 1Novel copper-containing membrane monooxygenases 2(CuMMOs) encoded by alkane-utilizing Betaproteobacteria 3 4Running title: Novel CuMMOs in Betaproteobacteria 5 6Fauziah F. Rochman1, Miye Kwon2, Roshan Khadka1, Ivica Tamas1,3, Azriel 7Abraham Lopez-Jauregui1,4, Andriy Sheremet1, Angela Smirnova1, Rex R. 8Malmstrom5, Sukhwan Yoon2, Tanja Woyke5, Peter F. Dunfield1*, Tobin J. 9Verbeke1 10 111 Department of Biological Sciences, University of Calgary, 2500 University 12Dr. NW Calgary AB Canada T2N 1N4 132 Department of Civil and Environmental Engineering, Korea Advanced 14Institute of Science and Technology, Daejeon, Korea 153Department of Biology and Ecology, University of Novi Sad Novi Sad, Serbia 164 Instituto Tecnologico y de Estudios Superiores de Monterrey, Chihuahua, 17Mexico 185 Department of Energy Joint Genome Institute, Walnut Creek, California, 19USA. 20 21*Corresponding author: [email protected]; 403-220-2469 22 3 2 4 23Competing interests: The authors declare that they have no competing 24interests. 5 3 6 25Abstract 26Copper-containing membrane monooxygenases (CuMMOs) are encoded by 27xmoCAB(D) gene clusters and catalyze the oxidation of methane, ammonia, 28or some short chain alkanes and alkenes. In a metagenome constructed from 29an oilsands tailings pond we detected an xmoCABD gene cluster with <59% 30derived amino acid identity to genes from known bacteria. -
Multilayered Horizontal Operon Transfers from Bacteria Reconstruct a Thiamine Salvage Pathway in Yeasts
Multilayered horizontal operon transfers from bacteria reconstruct a thiamine salvage pathway in yeasts Carla Gonçalvesa and Paula Gonçalvesa,1 aApplied Molecular Biosciences Unit-UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal Edited by Edward F. DeLong, University of Hawaii at Manoa, Honolulu, HI, and approved September 22, 2019 (received for review June 14, 2019) Horizontal acquisition of bacterial genes is presently recognized as nisms presumed to have facilitated a transition from bacterial an important contribution to the adaptation and evolution of operon transcription to eukaryotic-style gene expression were eukaryotic genomes. However, the mechanisms underlying ex- proposed, such as gene fusion giving rise to multifunctional pro- pression and consequent selection and fixation of the prokaryotic teins (6, 23, 24), increase in intergenic distances between genes to genes in the new eukaryotic setting are largely unknown. Here we generate room for eukaryotic promoters, and independent tran- show that genes composing the pathway for the synthesis of the scription producing mRNAs with poly(A) tails have been dem- essential vitamin B1 (thiamine) were lost in an ancestor of a yeast onstrated (22). In the best documented study, which concerns a lineage, the Wickerhamiella/Starmerella (W/S) clade, known to bacterial siderophore biosynthesis operon acquired by yeasts be- harbor an unusually large number of genes of alien origin. The longing to the Wickerhamiella/Starmerella (W/S) clade, the bacte- thiamine pathway was subsequently reassembled, at least twice, rial genes acquired as an operon were shown to be functional (22). by multiple HGT events from different bacterial donors involving Thiamine, commonly known as vitamin B1, is essential for all both single genes and entire operons. -
Potential for and Distribution of Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms
materials Communication Potential for and Distribution of Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms Liyuan Hou and Erica L.-W. Majumder * Department of Chemistry, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA; [email protected] * Correspondence: [email protected] or [email protected]; Tel.: +1-3154706854 Abstract: Polystyrene (PS) is one of the main polymer types of plastic wastes and is known to be resistant to biodegradation, resulting in PS waste persistence in the environment. Although previous studies have reported that some microorganisms can degrade PS, enzymes and mechanisms of microorganism PS biodegradation are still unknown. In this study, we summarized microbial species that have been identified to degrade PS. By screening the available genome information of microorganisms that have been reported to degrade PS for enzymes with functional potential to depolymerize PS, we predicted target PS-degrading enzymes. We found that cytochrome P4500s, alkane hydroxylases and monooxygenases ranked as the top potential enzyme classes that can degrade PS since they can break C–C bonds. Ring-hydroxylating dioxygenases may be able to break the side-chain of PS and oxidize the aromatic ring compounds generated from the decomposition of PS. These target enzymes were distributed in Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes, suggesting a broad potential for PS biodegradation in various earth environments and microbiomes. Our results provide insight into the enzymatic degradation of PS and suggestions for realizing the biodegradation of this recalcitrant plastic. Citation: Hou, L.; Majumder, E.L. Keywords: plastics; polystyrene biodegradation; enzymatic biodegradation; monooxygenase; alkane Potential for and Distribution of hydroxylase; cytochrome P450 Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms. -
Enrichment of Beneficial Cucumber Rhizosphere Microbes Mediated By
Wen et al. Horticulture Research (2020) 7:154 Horticulture Research https://doi.org/10.1038/s41438-020-00380-3 www.nature.com/hortres ARTICLE Open Access Enrichment of beneficial cucumber rhizosphere microbes mediated by organic acid secretion Tao Wen1,JunYuan1, Xiaoming He2,YueLin2,QiweiHuang1 andQirongShen 1 Abstract Resistant cultivars have played important roles in controlling Fusarium wilt disease, but the roles of rhizosphere interactions among different levels of resistant cultivars are still unknown. Here, two phenotypes of cucumber, one resistant and one with increased susceptibility to Fusarium oxysporum f.sp. cucumerinum (Foc), were grown in the soil and hydroponically, and then 16S rRNA gene sequencing and nontargeted metabolomics techniques were used to investigate rhizosphere microflora and root exudate profiles. Relatively high microbial community evenness for the Foc-susceptible cultivar was detected, and the relative abundances of Comamonadaceae and Xanthomonadaceae were higher for the Foc-susceptible cultivar than for the other cultivar. FishTaco analysis revealed that specific functional traits, such as protein synthesis and secretion, bacterial chemotaxis, and small organic acid metabolism pathways, were significantly upregulated in the rhizobacterial community of the Foc-susceptible cultivar. A machine- learning approach in conjunction with FishTaco plus metabolic pathway analysis revealed that four organic acids (citric acid, pyruvate acid, succinic acid, and fumarate) were released at higher abundance by the Foc-susceptible cultivar compared with the resistant cultivar, which may be responsible for the recruitment of Comamonadaceae, a potential beneficial microbial group. Further validation demonstrated that Comamonadaceae can be “cultured” by these organic acids. Together, compared with the resistant cultivar, the susceptible cucumber tends to assemble beneficial microbes by secreting more organic acids. -
Recent Advances in Biocatalysts Engineering for Polyethylene Terephthalate Plastic Waste Green Recycling
Environment International 145 (2020) 106144 Contents lists available at ScienceDirect Environment International journal homepage: www.elsevier.com/locate/envint Review article Recent advances in biocatalysts engineering for polyethylene terephthalate plastic waste green recycling Nadia A. Samak a,b,c,1, Yunpu Jia a,b,1, Moustafa M. Sharshar a,b, Tingzhen Mu a, Maohua Yang a, Sumit Peh a,b, Jianmin Xing a,b,* a CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China b College of Chemical Engineering, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, PR China c Processes Design and Development Department, Egyptian Petroleum Research Institute, Nasr City, 11727 Cairo, Egypt ARTICLE INFO ABSTRACT Handling Editor: Guo-ping Sheng The massive waste of poly(ethylene terephthalate) (PET) that ends up in the landfills and oceans and needs hundreds of years for degradation has attracted global concern. The poor stability and productivity of the Keywords: available PET biocatalysts hinder their industrial applications. Active PET biocatalysts can provide a promising Plastic waste avenue for PET bioconversion and recycling. Therefore, there is an urgent need to develop new strategies that Poly(ethylene terephthalate) could enhance the stability, catalytic activity, solubility, productivity, and re-usability of these PET biocatalysts Recycling under harsh conditions such as high temperatures, pH, and salinity. This has raised great attention in using Biocatalysts ’ Bioengineering bioengineering strategies to improve PET biocatalysts robustness and catalytic behavior. Herein, historical and forecasting data of plastic production and disposal were critically reviewed. -
Supplementary Material Bacterial Death and TRADD-N Domains Help Define Novel Apoptosis and Immunity Mechanisms Shared by Prokary
Supplementary Material Bacterial Death and TRADD-N domains help define novel apoptosis and immunity mechanisms shared by prokaryotes and metazoans Gurmeet Kaur†, Lakshminarayan M. Iyer†, A. Maxwell Burroughs, L. Aravind* Computational Biology Branch, National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA †These authors contributed equally to the manuscript Abstract Several homologous domains are shared by eukaryotic immunity and programmed cell-death systems and poorly understood bacterial proteins. Recent studies show these to be components of a network of highly regulated systems connecting apoptotic processes to counter-invader immunity, in prokaryotes with a multicellular habit. However, the provenance of key adaptor domains, namely those of the Death-like and TRADD-N superfamilies, a quintessential feature of metazoan apoptotic systems, remained murky. Here, we use sensitive sequence analysis and comparative genomics methods to identify unambiguous bacterial homologs of the Death-like and TRADD-N superfamilies. We show the former to have arisen as part of a radiation of effector-associated α-helical adaptor domains that likely mediate homotypic interactions bringing together diverse effector and signaling domains in predicted bacterial apoptosis- and counter-invader systems. Similarly, we show that the TRADD-N domain defines a key, widespread signaling bridge that links effector deployment to invader-sensing in multicellular bacterial and metazoan counter-invader -
Microbial Community Response to Heavy and Light Crude Oil in the Great Lakes
Microbial Community Response to Heavy and Light Crude Oil in the Great Lakes Stephen Techtmann 10/24/19 Microbial Sensors Techtmann Lab @ MTU Investigating the applications of environmental microbial communities Hydraulic Fracturing Related Antibiotic Resistance Oil Bioremediation Techtmann Lab @ MTU Overview • Background on oil biodegradation • Microbial response to light and heavy crude oil in the Great Lakes • Machine learning for prediction of contamination in the Great Lakes. Oil Spills Deepwater Horizon Enbridge Line 6B Deepwater Horizon Oil Spill • 4,1000,000 bbl of oil released • Light Sweet Crude oil released • April 20, 2010 • 1101.7 miles of shoreline oiled Atlas and Hazen 2011 Enbridge Line 6B Spill – Marshall MI • 20,082 bbl of oil released • Diluted Bitumen • July 26, 2010 • 70 miles of shoreline oiled https://www.mlive.com/news/kalamazoo/2010/07/state_of_emergency_declared_as.html Oil Transmissions Pipelines in the Great Lakes Region Line 5: • 645 miles from Superior WI to Sarnia Ontario • 540,000 barrels per day • Light crude and natural gas liquids (NGLs) Crude oil Oil types and API Gravity Microbes and Biotechnology (Bioremediation) Low cost input Microbe High value output Decreased Cost Contaminant Increased Efficiency Carbon dioxide or non- toxic daughter products Carbon dioxide Microbial Biomass Petroleum Microbe Daughter Products Water Microbial Ecology and Biotechnology Low cost input Microbe High value output Decreased Cost/Increased Efficiency Complex input Input A Microbe Microbe Output A Input B Microbe Output -
Aquabacterium Gen. Nov., with Description of Aquabacterium Citratiphilum Sp
International Journal of Systematic Bacteriology (1999), 49, 769-777 Printed in Great Britain Aquabacterium gen. nov., with description of Aquabacterium citratiphilum sp. nov., Aquabacterium parvum sp. nov. and Aquabacterium commune sp. nov., three in situ dominant bacterial species from the Berlin drinking water system Sibylle Kalmbach,’ Werner Manz,’ Jorg Wecke2 and Ulrich Szewzyk’ Author for correspondence : Werner Manz. Tel : + 49 30 3 14 25589. Fax : + 49 30 3 14 7346 1. e-mail : [email protected]. tu-berlin.de 1 Tech nisc he U nive rsit ;it Three bacterial strains isolated from biofilms of the Berlin drinking water Berlin, lnstitut fur system were characterized with respect to their morphological and Tec hn ischen Umweltschutz, Fachgebiet physiological properties and their taxonomic position. Phenotypically, the Okologie der bacteria investigated were motile, Gram-negative rods, oxidase-positive and Mikroorganismen,D-l 0587 catalase-negative, and contained polyalkanoates and polyphosphate as Berlin, Germany storage polymers. They displayed a microaerophilic growth behaviour and 2 Robert Koch-lnstitut, used oxygen and nitrate as electron acceptors, but not nitrite, chlorate, sulfate Nordufer 20, D-13353 Berlin, Germany or ferric iron. The substrates metabolized included a broad range of organic acids but no carbohydrates at all. The three species can be distinguished from each other by their substrate utilization, ability to hydrolyse urea and casein, cellular protein patterns and growth on nutrient-rich media as well as their temperature, pH and NaCl tolerances. Phylogenetic analysis, based on 165 rRNA gene sequence comparison, revealed that the isolates are affiliated to the /I1 -subclass of Proteobacteria. The isolates constitute three new species with internal levels of DNA relatedness ranging from 44.9 to 51*3O/0. -
Supplementary Information for Microbial Electrochemical Systems Outperform Fixed-Bed Biofilters for Cleaning-Up Urban Wastewater
Electronic Supplementary Material (ESI) for Environmental Science: Water Research & Technology. This journal is © The Royal Society of Chemistry 2016 Supplementary information for Microbial Electrochemical Systems outperform fixed-bed biofilters for cleaning-up urban wastewater AUTHORS: Arantxa Aguirre-Sierraa, Tristano Bacchetti De Gregorisb, Antonio Berná, Juan José Salasc, Carlos Aragónc, Abraham Esteve-Núñezab* Fig.1S Total nitrogen (A), ammonia (B) and nitrate (C) influent and effluent average values of the coke and the gravel biofilters. Error bars represent 95% confidence interval. Fig. 2S Influent and effluent COD (A) and BOD5 (B) average values of the hybrid biofilter and the hybrid polarized biofilter. Error bars represent 95% confidence interval. Fig. 3S Redox potential measured in the coke and the gravel biofilters Fig. 4S Rarefaction curves calculated for each sample based on the OTU computations. Fig. 5S Correspondence analysis biplot of classes’ distribution from pyrosequencing analysis. Fig. 6S. Relative abundance of classes of the category ‘other’ at class level. Table 1S Influent pre-treated wastewater and effluents characteristics. Averages ± SD HRT (d) 4.0 3.4 1.7 0.8 0.5 Influent COD (mg L-1) 246 ± 114 330 ± 107 457 ± 92 318 ± 143 393 ± 101 -1 BOD5 (mg L ) 136 ± 86 235 ± 36 268 ± 81 176 ± 127 213 ± 112 TN (mg L-1) 45.0 ± 17.4 60.6 ± 7.5 57.7 ± 3.9 43.7 ± 16.5 54.8 ± 10.1 -1 NH4-N (mg L ) 32.7 ± 18.7 51.6 ± 6.5 49.0 ± 2.3 36.6 ± 15.9 47.0 ± 8.8 -1 NO3-N (mg L ) 2.3 ± 3.6 1.0 ± 1.6 0.8 ± 0.6 1.5 ± 2.0 0.9 ± 0.6 TP (mg -
BEI Resources Product Information Sheet Catalog No. NR-51597 Pseudomonas Aeruginosa, Strain MRSN 23861
Product Information Sheet for NR-51597 Pseudomonas aeruginosa, Strain MRSN P. aeruginosa is a Gram-negative, aerobic, rod-shaped bacterium with unipolar motility that thrives in many diverse 23861 environments including soil, water and certain eukaryotic hosts. It is a key emerging opportunistic pathogen in animals, Catalog No. NR-51597 including humans and plants. While it rarely infects healthy This reagent is the tangible property of the U.S. Government. individuals, P. aeruginosa causes severe acute and chronic nosocomial infections in immunocompromised or catheterized patients, especially in patients with cystic fibrosis, burns, For research use only. Not for human use. cancer or HIV.3-5 Infections of this type are often highly antibiotic resistant, difficult to eradicate and often lead to Contributor: death. The ability of P. aeruginosa to survive on minimal Multidrug-Resistant Organism Repository and Surveillance nutritional requirements, tolerate a variety of physical Network (MRSN), Bacterial Disease Branch, Walter Reed conditions and rapidly develop resistance during the course of Army Institute of Research, Silver Spring, Maryland, USA therapy has allowed it to persist in both community and 5,6 hospital settings. Manufacturer: BEI Resources Material Provided: Each vial contains approximately 0.5 mL of bacterial culture in Product Description: Tryptic Soy broth supplemented with 10% glycerol. Bacteria Classification: Pseudomonadaceae, Pseudomonas Species: Pseudomonas aeruginosa Note: If homogeneity is required for your intended use, please Strain: MRSN 23861 purify prior to initiating work. Original Source: Pseudomonas aeruginosa (P. aeruginosa), strain MRSN 23861 was isolated in 2014 from a human Packaging/Storage: respiratory sample as part of a surveillance program in the NR-51597 was packaged aseptically in cryovials. -
1 Microbial Transformations of Organic Chemicals in Produced Fluid From
Microbial transformations of organic chemicals in produced fluid from hydraulically fractured natural-gas wells Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Morgan V. Evans Graduate Program in Environmental Science The Ohio State University 2019 Dissertation Committee Professor Paula Mouser, Advisor Professor Gil Bohrer, Co-Advisor Professor Matthew Sullivan, Member Professor Ilham El-Monier, Member Professor Natalie Hull, Member 1 Copyrighted by Morgan Volker Evans 2019 2 Abstract Hydraulic fracturing and horizontal drilling technologies have greatly improved the production of oil and natural-gas from previously inaccessible non-permeable rock formations. Fluids comprised of water, chemicals, and proppant (e.g., sand) are injected at high pressures during hydraulic fracturing, and these fluids mix with formation porewaters and return to the surface with the hydrocarbon resource. Despite the addition of biocides during operations and the brine-level salinities of the formation porewaters, microorganisms have been identified in input, flowback (days to weeks after hydraulic fracturing occurs), and produced fluids (months to years after hydraulic fracturing occurs). Microorganisms in the hydraulically fractured system may have deleterious effects on well infrastructure and hydrocarbon recovery efficiency. The reduction of oxidized sulfur compounds (e.g., sulfate, thiosulfate) to sulfide has been associated with both well corrosion and souring of natural-gas, and proliferation of microorganisms during operations may lead to biomass clogging of the newly created fractures in the shale formation culminating in reduced hydrocarbon recovery. Consequently, it is important to elucidate microbial metabolisms in the hydraulically fractured ecosystem. -
Sites in the Virginia-Washington, D.C.-Maryland Metro Area to Observe Or Collect Bacteria That Precipitate Iron and Manganese Oxides1
SITES IN THE VIRGINIA-WASHINGTON, D.C.-MARYLAND METRO AREA TO OBSERVE OR COLLECT BACTERIA THAT PRECIPITATE IRON AND MANGANESE OXIDES1 by Eleanora I. Robbins U.S. Geological Survey Open-File Report 98-202 April 24, 1998 1 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards. This publication is intended to be used along with U.S. Geological Survey EarthFax (1-800- USA-MAPS) What's the Red in the Water? What's the Black on the Rocks? What's the Oil on the Surface? and < http: //pubs.usgs. gov/publications/text/Norriemicrobes. html > SITES IN THE VIRGINIA-WASHINGTON, D.C.-MARYLAND METRO AREA TO OBSERVE OR COLLECT BACTERIA THAT PRECIPITATE IRON AND MANGANESE OXIDES VIRGINIA VA Site 1A. Fairfax County, Huntley Meadows Park: From the Beltway (495), go south on US 1. Turn right onto Lockheed Blvd.; travel to end of Lockheed Blvd., and then turn CAREFULLY into the Park at the sign. Park in parking lot, walk along the wetland path to the beginning of the boardwalk. Look to the right (north) and see red patches in the water where ground water is discharging. This ground water is anoxic and carries reduced iron. The iron bacteria here (predominantly Leptothrix ochracea^ oxidize the iron and turn it into a red flocculate. If you move the flocculate aside, you can see the underlying black color formed where the reducing bacteria reduce the iron to its black state in the zone of reduction in the mud. As you walk along the boardwalk, you will see much evidence of the iron bacterium, Leptothrix discophora] that forms glassy-looking patches that appear, at first glance, to be an nil-film VA Site IB.