The Saltpan Microbiome Is Structured by Sediment Depth and Minimally Influenced Yb Variable Hydration
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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. -
Bacterial Epibiotic Communities of Ubiquitous and Abundant Marine Diatoms Are Distinct in Short- and Long-Term Associations
fmicb-09-02879 December 1, 2018 Time: 14:0 # 1 ORIGINAL RESEARCH published: 04 December 2018 doi: 10.3389/fmicb.2018.02879 Bacterial Epibiotic Communities of Ubiquitous and Abundant Marine Diatoms Are Distinct in Short- and Long-Term Associations Klervi Crenn, Delphine Duffieux and Christian Jeanthon* CNRS, Sorbonne Université, Station Biologique de Roscoff, Adaptation et Diversité en Milieu Marin, Roscoff, France Interactions between phytoplankton and bacteria play a central role in mediating biogeochemical cycling and food web structure in the ocean. The cosmopolitan diatoms Thalassiosira and Chaetoceros often dominate phytoplankton communities in marine systems. Past studies of diatom-bacterial associations have employed community- level methods and culture-based or natural diatom populations. Although bacterial assemblages attached to individual diatoms represents tight associations little is known on their makeup or interactions. Here, we examined the epibiotic bacteria of 436 Thalassiosira and 329 Chaetoceros single cells isolated from natural samples and Edited by: collection cultures, regarded here as short- and long-term associations, respectively. Matthias Wietz, Epibiotic microbiota of single diatom hosts was analyzed by cultivation and by cloning- Alfred Wegener Institut, Germany sequencing of 16S rRNA genes obtained from whole-genome amplification products. Reviewed by: The prevalence of epibiotic bacteria was higher in cultures and dependent of the host Lydia Jeanne Baker, Cornell University, United States species. Culture approaches demonstrated that both diatoms carry distinct bacterial Bryndan Paige Durham, communities in short- and long-term associations. Bacterial epibonts, commonly University of Washington, United States associated with phytoplankton, were repeatedly isolated from cells of diatom collection *Correspondence: cultures but were not recovered from environmental cells. -
Phylogeny of Rieske/Cytb Complexes with a Special Focus on the Haloarchaeal Enzymes
GBE Phylogeny of Rieske/cytb Complexes with a Special Focus on the Haloarchaeal Enzymes Frauke Baymann1,*, Barbara Schoepp-Cothenet1, Evelyne Lebrun1, Robert van Lis1, and Wolfgang Nitschke1 1BIP/UMR7281, FR3479, CNRS/AMU, Marseille, France *Corresponding author: E-mail: [email protected]. Accepted: July 5, 2012 Abstract Rieske/cytochrome b (Rieske/cytb) complexes are proton pumping quinol oxidases that are present in most bacteria and Archaea. The phylogeny of their subunits follows closely the 16S-rRNA phylogeny, indicating that chemiosmotic coupling was already present in the last universal common ancestor of Archaea and bacteria. Haloarchaea are the only organisms found so far that acquired Rieske/cytb complexes via interdomain lateral gene transfer. They encode two Rieske/cytb complexes in their genomes; one of them is found in genetic context with nitrate reductase genes and has its closest relatives among Actinobacteria and the Thermus/Deinococcus group. It is likely to function in nitrate respiration. The second Rieske/cytb complex of Haloarchaea features a split cytochrome b sequence as do Cyanobacteria, chloroplasts, Heliobacteria, and Bacilli. It seems that Haloarchaea acquired this complex from an ancestor of the above-mentioned phyla. Its involvement in the bioenergetic reaction chains of Haloarchaea is unknown. We present arguments in favor of the hypothesis that the ancestor of Haloarchaea, which relied on a highly specialized bioenergetic metabolism, that is, methanogenesis, and was devoid of quinones and most enzymes of anaerobic or aerobic bioenergetic reaction chains, integrated laterally transferred genes into its genome to respond to a change in environmental conditions that made methanogenesis unfavorable. Key words: Rieske/cytb complex, Haloarchaea, bc-complex, halobacteria, evolution, bioenergetics. -
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 -
Identification and Characterization of a Halotolerant, Cold-Active Marine Endo–1,4-Glucanase by Using Functional Metagenomics
Identification and Characterization of a Halotolerant, Cold-Active Marine Endo-β-1,4-Glucanase by Using Functional Metagenomics of Seaweed-Associated Microbiota Marjolaine Martin, Sophie Biver, Sébastien Steels, Tristan Barbeyron, Murielle Jam, Daniel Portetelle, Gurvan Michel, Micheline Vandenbol To cite this version: Marjolaine Martin, Sophie Biver, Sébastien Steels, Tristan Barbeyron, Murielle Jam, et al.. Identi- fication and Characterization of a Halotolerant, Cold-Active Marine Endo-β-1,4-Glucanase by Using Functional Metagenomics of Seaweed-Associated Microbiota. Applied and Environmental Microbi- ology, American Society for Microbiology, 2014, 80 (16), pp.4958-4967. 10.1128/AEM.01194-14. hal-02138133 HAL Id: hal-02138133 https://hal.archives-ouvertes.fr/hal-02138133 Submitted on 23 May 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. AEM Accepts, published online ahead of print on 6 June 2014 Appl. Environ. Microbiol. doi:10.1128/AEM.01194-14 Copyright © 2014, American Society for Microbiology. All Rights Reserved. 1 Functional screening -
Distribution of Aerobic Anoxygenic Phototrophs in Freshwater Plateau Lakes
Pol. J. Environ. Stud. Vol. 27, No. 2 (2018), 871-879 DOI: 10.15244/pjoes/76039 ONLINE PUBLICATION DATE: 2018-01-15 Original Research Distribution of Aerobic Anoxygenic Phototrophs in Freshwater Plateau Lakes Yingying Tian1, 2, Xingqiang Wu1*, Qichao Zhou3, Oscar Omondi Donde1, 2, 4, Cuicui Tian1, Chunbo Wang1, Bing Feng1, 2, Bangding Xiao1* 1Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology, University of Chinese Academy of Sciences, Wuhan 430072, China 2University of Chinese Academy of Sciences, Beijing 100101, China 3Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed, Yunnan Institute of Environmental Science (Kunming China International Research Center for Plateau Lake), Kunming 650034, China 4Egerton University, Department of Environmental Science, P. O. Box 536-20115, Egerton-Kenya Received: 13 February 2017 Accepted: 23 July 2017 Abstract Aerobic anoxygenic phototrophic (AAP) bacteria are known functionally as photoheterotrophic microbes. Though numerously reported from ocean habitats, their distribution in freshwater lakes is far less documented. In the present study we investigated the dynamics of AAP bacteria in freshwater plateau lakes. Results revealed a high abundance of AAP bacteria in eutrophic lakes. Moreover, AAP bacteria were positively correlated with TN, TP, and Chl a, but the variations of AAP bacterial proportion to potential total bacteria (AAPB%). Alphaproteobacteria-related sequences dominated lakes Luguhu, Erhai, and Chenghai at ratios of 93.9, 85.4, and 70.6%, respectively, and in total comprised eight clearly defined subgroups. Sequences affiliated with Beta- and Grammaproteobacteria were found to be rare taxa. Additionally, Alkalibacterium-like sequences belonging to Firmutes were assigned. -
Microbial Diversity in Long-Term Water-Flooded Oil Reservoirs with Different in Situ Temperatures in China
Microbial diversity in long-term water-flooded oil reservoirs with different SUBJECT AREAS: BIODIVERSITY in situ temperatures in China MICROBIOLOGY Fan Zhang1, Yue-Hui She2,3, Lu-Jun Chai1, Ibrahim M. Banat4, Xiao-Tao Zhang1, Fu-Chang Shu2, ECOLOGY Zheng-Liang Wang2, Long-Jiang Yu3 & Du-Jie Hou1 ENVIRONMENTAL SCIENCES 1The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism, Ministry of Education, China; Received School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China, 2College of Chemistry and 1 August 2012 Environmental Engineering, Yangtze University, Jingzhou, Hubei 434023, China, 3College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430079, China, 4School of Biomedical Sciences, University of Ulster, Accepted Coleraine, BT52 1SA, N. Ireland, UK. 27 September 2012 Published Water-flooded oil reservoirs have specific ecological environments due to continual water injection and oil 23 October 2012 production and water recycling. Using 16S rRNA gene clone library analysis, the microbial communities present in injected waters and produced waters from four typical water-flooded oil reservoirs with different in situ temperatures of 256C, 406C, 556C and 706C were examined. The results obtained showed that the Correspondence and higher the in situ temperatures of the oil reservoirs is, the less the effects of microorganisms in the injected requests for materials waters on microbial community compositions in the produced waters is. In addition, microbes inhabiting in the produced waters of the four water-flooded oil reservoirs were varied but all dominated by should be addressed to Proteobacteria. Moreover, most of the detected microbes were not identified as indigenous. -
Targeting of Flavobacterium Johnsoniae Proteins for Secretion by the Type IX Secretion System Surashree Sunil Kulkarni University of Wisconsin-Milwaukee
University of Wisconsin Milwaukee UWM Digital Commons Theses and Dissertations May 2017 Targeting of Flavobacterium Johnsoniae Proteins for Secretion By the Type IX Secretion System Surashree Sunil Kulkarni University of Wisconsin-Milwaukee Follow this and additional works at: https://dc.uwm.edu/etd Part of the Microbiology Commons Recommended Citation Kulkarni, Surashree Sunil, "Targeting of Flavobacterium Johnsoniae Proteins for Secretion By the Type IX Secretion System" (2017). Theses and Dissertations. 1501. https://dc.uwm.edu/etd/1501 This Dissertation is brought to you for free and open access by UWM Digital Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UWM Digital Commons. For more information, please contact [email protected]. TARGETING OF FLAVOBACTERIUM JOHNSONIAE PROTEINS FOR SECRETION BY THE TYPE IX SECRETION SYSTEM by Surashree S. Kulkarni A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Biological Sciences at The University of Wisconsin-Milwaukee May 2017 ABSTRACT TARGETING OF FLAVOBACTERIUM JOHNSONIAE PROTEINS FOR SECRETION BY THE TYPE IX SECRETION SYSTEM by Surashree S. Kulkarni The University of Wisconsin-Milwaukee, 2017 Under the Supervision of Dr. Mark J. McBride Flavobacterium johnsoniae and many related bacteria secrete proteins across the outer membrane using the type IX secretion system (T9SS). Proteins secreted by T9SSs have amino-terminal signal peptides for export across the cytoplasmic membrane by the Sec system and carboxy-terminal domains (CTDs) targeting them for secretion across the outer membrane by the T9SS. Most but not all T9SS CTDs belong to family TIGR04183 (type A CTDs). -
Diversity of Rhodopirellula and Related Planctomycetes in a North Sea 1 Coastal Sediment Employing Carb As Molecular
University of Plymouth PEARL https://pearl.plymouth.ac.uk 01 University of Plymouth Research Outputs University of Plymouth Research Outputs 2015-09 Diversity of Rhodopirellula and related planctomycetes in a North Sea coastal sediment employing carB as molecular marker. Zure, M http://hdl.handle.net/10026.1/9389 10.1093/femsle/fnv127 FEMS Microbiol Lett All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author. 1 Title: Diversity of Rhodopirellula and related planctomycetes in a North Sea 2 coastal sediment employing carB as molecular marker 3 Authors: Marina Zure1, Colin B. Munn2 and Jens Harder1* 4 5 1Dept. of Microbiology, Max Planck Institute for Marine Microbiology, D-28359 6 Bremen, Germany, and 2School of Marine Sciences and Engineering, University of 7 Plymouth, Plymouth PL4 8AA, United Kingdom 8 9 *corresponding author: 10 Jens Harder 11 Max Planck Institute for Marine Microbiology 12 Celsiusstrasse 1 13 28359 Bremen, Germany 14 Email: [email protected] 15 Phone: ++49 421 2028 750 16 Fax: ++49 421 2028 590 17 18 19 Running title: carB diversity detects Rhodopirellula species 20 21 Abstract 22 Rhodopirellula is an abundant marine member of the bacterial phylum 23 Planctomycetes. Cultivation studies revealed the presence of several closely related 24 Rhodopirellula species in European coastal sediments. Because the 16S rRNA gene 25 does not provide the desired taxonomic resolution to differentiate Rhodopirellula 26 species, we performed a comparison of the genomes of nine Rhodopirellula strains 27 and six related planctomycetes and identified carB, coding for the large subunit of 28 carbamoylphosphate synthetase, as a suitable molecular marker. -
Identification of Microorganisms for The
IDENTIFICATION OF MICROORGANISMS FOR THE BIOREMEDIATION OF NITRATE AND MANGANESE IN MINNESOTA WATER A THESIS SUBMITTED TO THE FACULTY OF THE UNIVERSITY OF MINNESOTA BY EMILY ANDERSON IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE Satoshi Ishii AUGUST, 2018 © Emily Anderson 2018 ACKNOWLEDGEMENTS This work was supported by Minnesota Department of Agriculture (Project No. 108837), the Minnesota’s Discovery, Research and InnoVation Economy (MnDRIVE) initiative of the University of Minnesota, and the USDA North Central Region Sustainable Agriculture Research and Education (NCR-SARE) Graduate Student Grant Program. Additionally, I would like to thank my advisor, Satoshi Ishii, for taking me on as his first student and for his support and guidance throughout my degree program. I would also like to thank my committee members, Dr. Mike Sadowsky and Dr. Carl Rosen, as well as Dr. Gary Feyereisen for their time and advice towards achieving my degree. I am also grateful to the Ishii lab members for their support over the last two years, especially Jeonghwan Jang and Qian Zhang who have always been more than willing to help. I have enjoyed field and lab days in Willmar with the “woodchip team” (Ping Wang, Jeonghwan Jang, Ehsan Ghane, Ed Dorsey, Scott Schumacher, Todd Schumacher, Allie Arsenault, Hao Wang, Amanda Tersteeg) and others that were willing to volunteer with us (Nouf Aldossari, Stacy Nordstrom and Persephone Ma). For the manganese bioremediation project, I am grateful for the advice and encouragement from Dr. Cara Santelli and for the help from members of her lab. Luke Feeley had an important part in the manganese bioreactor establishment and maintenance as did Kimberly Hernandez and I am thankful for their contributions. -
Metagenomics Unveils the Attributes of the Alginolytic Guilds of Sediments from Four Distant Cold Coastal Environments
Metagenomics unveils the attributes of the alginolytic guilds of sediments from four distant cold coastal environments Marina N Matos1, Mariana Lozada1, Luciano E Anselmino1, Matías A Musumeci1, Bernard Henrissat2,3,4, Janet K Jansson5, Walter P Mac Cormack6,7, JoLynn Carroll8,9, Sara Sjöling10, Leif Lundgren11 and Hebe M Dionisi1* 1Laboratorio de Microbiología Ambiental, Centro para el Estudio de Sistemas Marinos (CESIMAR, CONICET), Puerto Madryn, U9120ACD, Chubut, Argentina 2Architecture et Fonction des Macromolécules Biologiques, CNRS, Aix-Marseille Université, 13288 Marseille, France 3INRA, USC 1408 AFMB, F-13288 Marseille, France 4Department of Biological Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia 5Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA 6Instituto Antártico Argentino, Ciudad Autónoma de Buenos Aires, C1064ABR, Argentina 7Instituto Nanobiotec, CONICET- Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1113AAC, Argentina 8Akvaplan-niva, Fram – High North Research Centre for Climate and the Environment, NO- 9296 Tromsø, Norway 9CAGE - Centre for Arctic Gas Hydrate, Environment and Climate, UiT The Arctic University of Norway, N-9037 Tromsø, Norway 10School of Natural Sciences and Environmental Studies, Södertörn University, 141 89 Huddinge, Sweden 11Stockholm University, SE-106 91 Stockholm, Sweden This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as an ‘Accepted Article’, doi: 10.1111/1462-2920.13433 This article is protected by copyright. All rights reserved. Page 2 of 41 Running title: Alginolytic guilds from cold sediments *Correspondence: Hebe M. -
Phylogeny and Molecular Signatures (Conserved Proteins and Indels) That Are Specific for the Bacteroidetes and Chlorobi Species Radhey S Gupta* and Emily Lorenzini
BMC Evolutionary Biology BioMed Central Research article Open Access Phylogeny and molecular signatures (conserved proteins and indels) that are specific for the Bacteroidetes and Chlorobi species Radhey S Gupta* and Emily Lorenzini Address: Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, L8N3Z5, Canada Email: Radhey S Gupta* - [email protected]; Emily Lorenzini - [email protected] * Corresponding author Published: 8 May 2007 Received: 21 December 2006 Accepted: 8 May 2007 BMC Evolutionary Biology 2007, 7:71 doi:10.1186/1471-2148-7-71 This article is available from: http://www.biomedcentral.com/1471-2148/7/71 © 2007 Gupta and Lorenzini; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: The Bacteroidetes and Chlorobi species constitute two main groups of the Bacteria that are closely related in phylogenetic trees. The Bacteroidetes species are widely distributed and include many important periodontal pathogens. In contrast, all Chlorobi are anoxygenic obligate photoautotrophs. Very few (or no) biochemical or molecular characteristics are known that are distinctive characteristics of these bacteria, or are commonly shared by them. Results: Systematic blast searches were performed on each open reading frame in the genomes of Porphyromonas gingivalis W83, Bacteroides fragilis YCH46, B. thetaiotaomicron VPI-5482, Gramella forsetii KT0803, Chlorobium luteolum (formerly Pelodictyon luteolum) DSM 273 and Chlorobaculum tepidum (formerly Chlorobium tepidum) TLS to search for proteins that are uniquely present in either all or certain subgroups of Bacteroidetes and Chlorobi.