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The Terminal Oxidases of Paracoccus Denitrificans Gier, Jan-Willem L
University of Groningen The terminal oxidases of Paracoccus denitrificans Gier, Jan-Willem L. de; Lübben, Mathias; Reijnders, Willem N.M.; Tipker, Corinne A.; Slotboom, Dirk-Jan; Spanning, Rob J.M. van; Stouthamer, Adriaan H.; Oost, John van der Published in: Molecular Microbiology IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 1994 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Gier, J-W. L. D., Lübben, M., Reijnders, W. N. M., Tipker, C. A., Slotboom, D-J., Spanning, R. J. M. V., Stouthamer, A. H., & Oost, J. V. D. (1994). The terminal oxidases of Paracoccus denitrificans. Molecular Microbiology, 13(2), 183-196. Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). The publication may also be distributed here under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license. More information can be found on the University of Groningen website: https://www.rug.nl/library/open-access/self-archiving-pure/taverne- amendment. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. -
CUED Phd and Mphil Thesis Classes
High-throughput Experimental and Computational Studies of Bacterial Evolution Lars Barquist Queens' College University of Cambridge A thesis submitted for the degree of Doctor of Philosophy 23 August 2013 Arrakis teaches the attitude of the knife { chopping off what's incomplete and saying: \Now it's complete because it's ended here." Collected Sayings of Muad'dib Declaration High-throughput Experimental and Computational Studies of Bacterial Evolution The work presented in this dissertation was carried out at the Wellcome Trust Sanger Institute between October 2009 and August 2013. This dissertation is the result of my own work and includes nothing which is the outcome of work done in collaboration except where specifically indicated in the text. This dissertation does not exceed the limit of 60,000 words as specified by the Faculty of Biology Degree Committee. This dissertation has been typeset in 12pt Computer Modern font using LATEX according to the specifications set by the Board of Graduate Studies and the Faculty of Biology Degree Committee. No part of this dissertation or anything substantially similar has been or is being submitted for any other qualification at any other university. Acknowledgements I have been tremendously fortunate to spend the past four years on the Wellcome Trust Genome Campus at the Sanger Institute and the European Bioinformatics Institute. I would like to thank foremost my main collaborators on the studies described in this thesis: Paul Gardner and Gemma Langridge. Their contributions and support have been invaluable. I would also like to thank my supervisor, Alex Bateman, for giving me the freedom to pursue a wide range of projects during my time in his group and for advice. -
General Introduction
Physiological Characteristics and Genomic Properties of Nitrosomonas mobilis Isolated from Nitrifying Granule of Wastewater Treatment Bioreactor December 2016 Soe Myat Thandar ソー ミャット サンダー Physiological Characteristics and Genomic Properties of Nitrosomonas mobilis Isolated from Nitrifying Granule of Wastewater Treatment Bioreactor December 2016 Waseda University Graduate School of Advanced Science and Engineering Department of Life Science and Medical Bioscience Research on Environmental Biotechnology Soe Myat Thandar ソー ミャット サンダー Contents Abbreviations ................................................................................................................... i Chapter 1-General introduction .................................................................................... 1 1.1. Nitrification and wastewater treatment system .......................................................... 3 1.2. Important of Nitrosomonas mobilis ........................................................................... 8 1.3. Objectives and outlines of this study ....................................................................... 12 1.4. Reference.................................................................................................................. 12 Chapter 2- Physiological characteristics of Nitrosomonas mobilis Ms1 ................... 17 2.1. Introduction .............................................................................................................. 19 2.2. Material and methods .............................................................................................. -
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 -
A Salt Lake Extremophile, Paracoccus Bogoriensis Sp. Nov., Efficiently Produces Xanthophyll Carotenoids
African Journal of Microbiology Research Vol. 3(8) pp. 426-433 August, 2009 Available online http://www.academicjournals.org/ajmr ISSN 1996-0808 ©2009 Academic Journals Full Length Research Paper A salt lake extremophile, Paracoccus bogoriensis sp. nov., efficiently produces xanthophyll carotenoids George O. Osanjo1*, Elizabeth W. Muthike2, Leah Tsuma3, Michael W. Okoth2, Wallace D. Bulimo3, Heinrich Lünsdorf4, Wolf-Rainer Abraham4, Michel Dion5, Kenneth N. Timmis4 , Peter N. Golyshin4 and Francis J. Mulaa3 1School of Pharmacy, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya. 2Department of Food Science, Technology and Nutrition, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya. 3Department of Biochemistry, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya. 4Division of Microbiology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, D-38124 Braunschweig, Germany. 5Université de Nantes, UMR CNRS 6204, Biotechnologie, Biocatalyse, Biorégulation, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, BP 92208, Nantes, F- 44322, France. Accepted 27 July, 2009 A Gram-negative obligate alkaliphilic bacterium (BOG6T) that secretes carotenoids was isolated from the outflow of Lake Bogoria hot spring located in the Kenyan Rift Valley. The bacterium is motile by means of a polar flagellum, and forms red colonies due to the production of xanthophyll carotenoid pigments. 16S rRNA gene sequence analysis showed this strain to cluster phylogenetically within the genus Paracoccus. Strain BOG6T is aerobic, positive for both catalase and oxidase, and non- methylotrophic. The major fatty acid of the isolate is C18: 1ω7c. It accumulated polyhydroxybutyrate granules. Strain BOG6T gave astaxanthin yield of 0.4 mg/g of wet cells indicating a potential for application in commercial production of carotenoids. -
Resilience of Microbial Communities After Hydrogen Peroxide Treatment of a Eutrophic Lake to Suppress Harmful Cyanobacterial Blooms
microorganisms Article Resilience of Microbial Communities after Hydrogen Peroxide Treatment of a Eutrophic Lake to Suppress Harmful Cyanobacterial Blooms Tim Piel 1,†, Giovanni Sandrini 1,†,‡, Gerard Muyzer 1 , Corina P. D. Brussaard 1,2 , Pieter C. Slot 1, Maria J. van Herk 1, Jef Huisman 1 and Petra M. Visser 1,* 1 Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1090 GE Amsterdam, The Netherlands; [email protected] (T.P.); [email protected] (G.S.); [email protected] (G.M.); [email protected] (C.P.D.B.); [email protected] (P.C.S.); [email protected] (M.J.v.H.); [email protected] (J.H.) 2 Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherland Institute for Sea Research, 1790 AB Den Burg, The Netherlands * Correspondence: [email protected]; Tel.: +31-20-5257073 † These authors have contributed equally to this work. ‡ Current address: Department of Technology & Sources, Evides Water Company, 3006 AL Rotterdam, The Netherlands. Abstract: Applying low concentrations of hydrogen peroxide (H2O2) to lakes is an emerging method to mitigate harmful cyanobacterial blooms. While cyanobacteria are very sensitive to H2O2, little Citation: Piel, T.; Sandrini, G.; is known about the impacts of these H2O2 treatments on other members of the microbial com- Muyzer, G.; Brussaard, C.P.D.; Slot, munity. In this study, we investigated changes in microbial community composition during two P.C.; van Herk, M.J.; Huisman, J.; −1 lake treatments with low H2O2 concentrations (target: 2.5 mg L ) and in two series of controlled Visser, P.M. -
Physiology of Dimethylsulfoniopropionate Metabolism
PHYSIOLOGY OF DIMETHYLSULFONIOPROPIONATE METABOLISM IN A MODEL MARINE ROSEOBACTER, Silicibacter pomeroyi by JAMES R. HENRIKSEN (Under the direction of William B. Whitman) ABSTRACT Dimethylsulfoniopropionate (DMSP) is a ubiquitous marine compound whose degradation is important in carbon and sulfur cycles and influences global climate due to its degradation product dimethyl sulfide (DMS). Silicibacter pomeroyi, a member of the a marine Roseobacter clade, is a model system for the study of DMSP degradation. S. pomeroyi can cleave DMSP to DMS and carry out demethylation to methanethiol (MeSH), as well as degrade both these compounds. Dif- ferential display proteomics was used to find proteins whose abundance increased when chemostat cultures of S. pomeroyi were grown with DMSP as the sole carbon source. Bioinformatic analysis of these genes and their gene clusters suggested roles in DMSP metabolism. A genetic system was developed for S. pomeroyi that enabled gene knockout to confirm the function of these genes. INDEX WORDS: Silicibacter pomeroyi, Ruegeria pomeroyi, dimethylsulfoniopropionate, DMSP, roseobacter, dimethyl sulfide, DMS, methanethiol, MeSH, marine, environmental isolate, proteomics, genetic system, physiology, metabolism PHYSIOLOGY OF DIMETHYLSULFONIOPROPIONATE METABOLISM IN A MODEL MARINE ROSEOBACTER, Silicibacter pomeroyi by JAMES R. HENRIKSEN B.S. (Microbiology), University of Oklahoma, 2000 B.S. (Biochemistry), University of Oklahoma, 2000 A Dissertation Submitted to the Graduate Faculty of The University of Georgia in Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY ATHENS, GEORGIA 2008 cc 2008 James R. Henriksen Some Rights Reserved Creative Commons License Version 3.0 Attribution-Noncommercial-Share Alike PHYSIOLOGY OF DIMETHYLSULFONIOPROPIONATE METABOLISM IN A MODEL MARINE ROSEOBACTER, Silicibacter pomeroyi by JAMES R. -
Paracoccus Denitrificans Possesses Two Bior Homologs Having a Role In
ORIGINAL RESEARCH Paracoccus denitrificans possesses two BioR homologs having a role in regulation of biotin metabolism Youjun Feng1, Ritesh Kumar2, Dmitry A. Ravcheev3 & Huimin Zhang1,* 1Department of Medical Microbiology & Parasitology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, China 2Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas 77030 3Luxembourg Centre for Systems Biomedicine, University of Luxembourg, 2, avenue de l’Universite, L-4365 Esch-sur-Alzette, Luxembourg. Keywords Abstract BioR, biotin, Paracoccus denitrificans. Recently, we determined that BioR, the GntR family of transcription factor, acts Correspondence as a repressor for biotin metabolism exclusively distributed in certain species of Youjun Feng, Department of Medical a-proteobacteria, including the zoonotic agent Brucella melitensis and the plant Microbiology & Parasitology, Zhejiang pathogen Agrobacterium tumefaciens. However, the scenario is unusual in Para- University School of Medicine (Zi-Jin-Gang coccus denitrificans, another closely related member of the same phylum a-proteo- Campus), No. 866, Yu-Hang-Tang Rd., bacteria featuring with denitrification. Not only does it encode two BioR Hangzhou City, Zhejiang 310058, China. Tel/Fax: +86 571 88208524; homologs Pden_1431 and Pden_2922 (designated as BioR1 and BioR2, respec- E-mail: [email protected]. tively), but also has six predictive BioR-recognizable sites (the two bioR homolog each has one site, whereas the two bio operons (bioBFDAGC and bioYB) each con- tains two tandem BioR boxes). It raised the possibility that unexpected complex- Funding Information ity is present in BioR-mediated biotin regulation. Here we report that this is the This work was supported by the Zhejiang case. The identity of the purified BioR proteins (BioR1 and BioR2) was confirmed Provincial Natural Science Foundation for with LC-QToF-MS. -
Copper Control of Bacterial Nitrous Oxide Emission and Its Impact on Vitamin B12-Dependent Metabolism
Copper control of bacterial nitrous oxide emission and its impact on vitamin B12-dependent metabolism Matthew J. Sullivan, Andrew J. Gates, Corinne Appia-Ayme1, Gary Rowley2, and David J. Richardson2 School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom Edited by James M. Tiedje, Michigan State University, East Lansing, MI, and approved October 21, 2013 (received for review July 31, 2013) Global agricultural emissions of the greenhouse gas nitrous oxide cultures leads to up-regulation of B12 independent anabolism, a (N2O) have increased by around 20% over the last 100 y, but reg- response indicative of destruction of the B12 pool by N2O. This ulation of these emissions and their impact on bacterial cellular cytotoxicity of N2O is relieved by the addition of exogenous B12. metabolism are poorly understood. Denitrifying bacteria convert nitrate in soils to inert di-nitrogen gas (N2) via N2O and the bio- Results and Discussion chemistry of this process has been studied extensively in Paracoc- Impact of Cu-Limitation on Paracoccus denitrificans Transcription cus denitrificans. Here we demonstrate that expression of the gene Under Denitrifying Conditions. Paracoccus denitrificans was grown − encoding the nitrous oxide reductase (NosZ), which converts N2Oto under anaerobic batch culture conditions with NO3 as electron N2, is regulated in response to the extracellular copper concentra- acceptor in medium containing 13 μmol/L (Cu-H) and 0.5 μmol/L − tion. We show that elevated levels of N2O released as a consequence (Cu-L) copper. Under both culture conditions NO3 was con- of decreased cellular NosZ activity lead to the bacterium switching sumed in a growth-linked fashion, decreasing from ∼8 mmol to from vitamin B12-dependent to vitamin B12-independent biosyn- 0 mmol as the culture density increased (Fig. -
Comparison of Physiology and Genome-Wide Expression in Two Nitrosomonas Spp
Comparison of physiology and genome-wide expression in two Nitrosomonas spp. under batch cultivation By Mohammad Ghashghavi A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science In Microbiology and Biotechnology Department of Biological Sciences University of Alberta © Mohammad Ghashghavi, 2014 Abstract: Ammonia oxidizing bacteria (AOB) play a central role in the nitrogen cycle by oxidizing ammonia to nitrite. Nitrosomonas europaea ATCC 19718 has been the single most studied AOB that has contributed to our understanding of chemolithotrophic ammonia oxidation. As a closely related species, Nitrosomonas eutropha C91 has also been extensively studied. Both of these bacteria are involved in wastewater treatment systems and play a crucial part in major losses of ammonium-based fertilizers globally. Although comparative genome analysis studies have been done before, change in genome-wide expression between closely related organisms are scarce. In this study, we compared these two organisms through physiology and transcriptomic experiments during exponential and early stationary growth phase. We found that under batch cultivation, N. europaea produces more N2O while N. eutropha consumes more nitrite. From transcriptomic analysis, we also found that there are selections of motility genes that are highly expressed in N. eutropha during early stationary growth phase and such observation was completely absent in N. europaea. Lastly, principle homologous genes that have been well studied had different patterns of expression in these strains. This study not only gives us a better understanding regarding physiology and genome-wide expression of these two AOB, it also opens a wide array of opportunities to further our knowledge in understanding other closely related species with regards to their evolution, physiology and niche preference. -
Characterization of Bacterial Communities Associated
www.nature.com/scientificreports OPEN Characterization of bacterial communities associated with blood‑fed and starved tropical bed bugs, Cimex hemipterus (F.) (Hemiptera): a high throughput metabarcoding analysis Li Lim & Abdul Hafz Ab Majid* With the development of new metagenomic techniques, the microbial community structure of common bed bugs, Cimex lectularius, is well‑studied, while information regarding the constituents of the bacterial communities associated with tropical bed bugs, Cimex hemipterus, is lacking. In this study, the bacteria communities in the blood‑fed and starved tropical bed bugs were analysed and characterized by amplifying the v3‑v4 hypervariable region of the 16S rRNA gene region, followed by MiSeq Illumina sequencing. Across all samples, Proteobacteria made up more than 99% of the microbial community. An alpha‑proteobacterium Wolbachia and gamma‑proteobacterium, including Dickeya chrysanthemi and Pseudomonas, were the dominant OTUs at the genus level. Although the dominant OTUs of bacterial communities of blood‑fed and starved bed bugs were the same, bacterial genera present in lower numbers were varied. The bacteria load in starved bed bugs was also higher than blood‑fed bed bugs. Cimex hemipterus Fabricus (Hemiptera), also known as tropical bed bugs, is an obligate blood-feeding insect throughout their entire developmental cycle, has made a recent resurgence probably due to increased worldwide travel, climate change, and resistance to insecticides1–3. Distribution of tropical bed bugs is inclined to tropical regions, and infestation usually occurs in human dwellings such as dormitories and hotels 1,2. Bed bugs are a nuisance pest to humans as people that are bitten by this insect may experience allergic reactions, iron defciency, and secondary bacterial infection from bite sores4,5. -
Horizontal Operon Transfer, Plasmids, and the Evolution of Photosynthesis in Rhodobacteraceae
The ISME Journal (2018) 12:1994–2010 https://doi.org/10.1038/s41396-018-0150-9 ARTICLE Horizontal operon transfer, plasmids, and the evolution of photosynthesis in Rhodobacteraceae 1 2 3 4 1 Henner Brinkmann ● Markus Göker ● Michal Koblížek ● Irene Wagner-Döbler ● Jörn Petersen Received: 30 January 2018 / Revised: 23 April 2018 / Accepted: 26 April 2018 / Published online: 24 May 2018 © The Author(s) 2018. This article is published with open access Abstract The capacity for anoxygenic photosynthesis is scattered throughout the phylogeny of the Proteobacteria. Their photosynthesis genes are typically located in a so-called photosynthesis gene cluster (PGC). It is unclear (i) whether phototrophy is an ancestral trait that was frequently lost or (ii) whether it was acquired later by horizontal gene transfer. We investigated the evolution of phototrophy in 105 genome-sequenced Rhodobacteraceae and provide the first unequivocal evidence for the horizontal transfer of the PGC. The 33 concatenated core genes of the PGC formed a robust phylogenetic tree and the comparison with single-gene trees demonstrated the dominance of joint evolution. The PGC tree is, however, largely incongruent with the species tree and at least seven transfers of the PGC are required to reconcile both phylogenies. 1234567890();,: 1234567890();,: The origin of a derived branch containing the PGC of the model organism Rhodobacter capsulatus correlates with a diagnostic gene replacement of pufC by pufX. The PGC is located on plasmids in six of the analyzed genomes and its DnaA- like replication module was discovered at a conserved central position of the PGC. A scenario of plasmid-borne horizontal transfer of the PGC and its reintegration into the chromosome could explain the current distribution of phototrophy in Rhodobacteraceae.