Novel Deep Branching Cu-Containing Membrane-Bound Monooxygenases: Distribution and Function ______
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The RDP-II Backbone Tree for Release 8.0. the Tree Was Inferred from a Distance Matrix Generated in PAUP* with the Weighbor (Weighted Neighbor Joining) Algorithm
Methylococcus capsulatus ACM 1292 (T) Oceanospirillum linum ATCC 11336 (T) Halomonas halodenitrificans ATCC 13511 (T) Legionella lytica PCM 2298 (T) Francisella tularensis subsp. tularensis ATCC 6223 (T) Coxiella burnetii Q177 Moraxella catarrhalis ATCC 25238 (T) Pseudomonas fluorescens IAM 12022 (T) Piscirickettsia salmonis LF-89 (T) Thiothrix nivea DSM 5205 (T) Allochromatium minutissimum DSM 1376 (T) Alteromonas macleodii IAM 12920 (T) Aeromonas salmonicida subsp. smithia CCM 4103 (T) Pasteurella multocida NCTC 10322 (T) Enterobacter nimipressuralis LMG 10245 (T) Vibrio vulnificus ATCC 27562 (T) Ectothiorhodospira mobilis DSM237 (T) Xanthomonas campestris LMG 568 (T) Cardiobacterium hominis ATCC 15826 (T) Methylophilus methylotrophus ATCC 53528 (T) Rhodocyclus tenuis DSM 109 (T) Hydrogenophilus thermoluteolus TH-1 (T) Neisseria gonorrhoeae NCTC 8375 (T) Comamonas testosteroni ATCC 11996 (T) Nitrosospira multiformis ATCC 25196 (T) Spirillum volutans ATCC 19554 (T) Burkholderia glathei LMG 14190 (T) Alcaligenes defragrans DSM 12141 (T) Oxalobacter formigenes ATCC 35274 (T) Acetobacter oboediens DSM 11826 (T) clone CS93 PROTEOBACTERIA Caedibacter caryophilus 221 (T) Rhodobacter sphaeroides ATCC 17023 (T) Rickettsia rickettsii ATCC VR-891 (T) Ehrlichia risticii ATCC VR-986 (T) Sphingomonas paucimobilis GIFU 2395 (T) Caulobacter fusiformis ATCC 15257 (T) Rhodospirillum rubrum ATCC 11170 (T) Brucella melitensis ATCC 23459 (T) Rhizobium tropici IFO 15247 (T) Bartonella vinsonii subsp. vinsonii ATCC VR-152 (T) Phyllobacterium myrsinacearum -
Toluene Biodegradation in an Algal-Bacterial Airlift Photobioreactor: Influence of the Biomass Concentration and the Presence Of
*Manuscript Click here to view linked References 1 Toluene biodegradation in an algal-bacterial airlift 1 2 2 photobioreactor: influence of the biomass concentration and 3 4 3 the presence of an organic phase 5 4 6 7 8 5 Raquel Lebrero*, Roxana Ángeles, Rebeca Pérez, Raúl Muñoz 9 10 11 12 6 Department of Chemical Engineering and Environmental Technology, University of 13 14 7 Valladolid, Dr. Mergelina, s/n, 47011, Valladolid, Spain. Tel. +34 983186424, Fax: 15 8 +34983423013. 16 17 9 18 19 20 10 *Corresponding author: [email protected] 21 22 11 Keywords: Airlift bioreactor, algal-bacterial photobioreactor, toluene biodegradation, 23 24 12 two-phase partitioning bioreactor 25 26 27 13 28 29 14 Abstract 30 31 32 15 The potential of algal-bacterial symbiosis for off-gas abatement was investigated for the first 33 16 time by comparatively evaluating the performance of a bacterial (CB) and an algal-bacterial 34 35 17 (PB) airlift bioreactors during the treatment of a 6 g m-3 toluene laden air emission. The 36 37 18 influence of biomass concentration and of the addition of a non-aqueous phase was also 38 19 investigated. A poor and fluctuating performance was recorded during the initial stages of the 39 40 20 experiment, which was attributed to the low biomass concentration present in both reactors and 41 42 21 to the accumulation of toxic metabolites. In this sense, an increase in the dilution rate from 0.23 43 22 to 0.45 d-1 and in biomass concentration from ~1 to ~5 g L-1 resulted in elimination capacities 44 45 23 (ECs) of 300 g m-3 h-1 (corresponding to removal efficiencies ~ 90 %). -
Widespread Soil Bacterium That Oxidizes Atmospheric Methane
Widespread soil bacterium that oxidizes atmospheric methane Alexander T. Tveita,1, Anne Grethe Hestnesa,1, Serina L. Robinsona, Arno Schintlmeisterb, Svetlana N. Dedyshc, Nico Jehmlichd, Martin von Bergend,e, Craig Herboldb, Michael Wagnerb, Andreas Richterf, and Mette M. Svenninga,2 aDepartment of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, 9037 Tromsoe, Norway; bCenter of Microbiology and Environmental Systems Science, Division of Microbial Ecology, University of Vienna, 1090 Vienna, Austria; cWinogradsky Institute of Microbiology, Research Center of Biotechnology of Russian Academy of Sciences, 117312 Moscow, Russia; dDepartment of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, 04318 Leipzig, Germany; eFaculty of Life Sciences, Institute of Biochemistry, University of Leipzig, 04109 Leipzig, Germany; and fCenter of Microbiology and Environmental Systems Science, Division of Terrestrial Ecosystem Research, University of Vienna, 1090 Vienna, Austria Edited by Mary E. Lidstrom, University of Washington, Seattle, WA, and approved March 7, 2019 (received for review October 22, 2018) The global atmospheric level of methane (CH4), the second most as-yet-uncultured clades within the Alpha- and Gammaproteobacteria important greenhouse gas, is currently increasing by ∼10 million (16–18) which were designated as upland soil clusters α and γ tons per year. Microbial oxidation in unsaturated soils is the only (USCα and USCγ, respectively). Interest in soil atmMOB has known biological process that removes CH4 from the atmosphere, increased significantly since then because they are responsible but so far, bacteria that can grow on atmospheric CH4 have eluded for the only known biological removal of atmospheric CH4 all cultivation efforts. -
Phylogenetic and Functional Characterization of Symbiotic Bacteria in Gutless Marine Worms (Annelida, Oligochaeta)
Phylogenetic and functional characterization of symbiotic bacteria in gutless marine worms (Annelida, Oligochaeta) Dissertation zur Erlangung des Grades eines Doktors der Naturwissenschaften -Dr. rer. nat.- dem Fachbereich Biologie/Chemie der Universität Bremen vorgelegt von Anna Blazejak Oktober 2005 Die vorliegende Arbeit wurde in der Zeit vom März 2002 bis Oktober 2005 am Max-Planck-Institut für Marine Mikrobiologie in Bremen angefertigt. 1. Gutachter: Prof. Dr. Rudolf Amann 2. Gutachter: Prof. Dr. Ulrich Fischer Tag des Promotionskolloquiums: 22. November 2005 Contents Summary ………………………………………………………………………………….… 1 Zusammenfassung ………………………………………………………………………… 2 Part I: Combined Presentation of Results A Introduction .…………………………………………………………………… 4 1 Definition and characteristics of symbiosis ...……………………………………. 4 2 Chemoautotrophic symbioses ..…………………………………………………… 6 2.1 Habitats of chemoautotrophic symbioses .………………………………… 8 2.2 Diversity of hosts harboring chemoautotrophic bacteria ………………… 10 2.2.1 Phylogenetic diversity of chemoautotrophic symbionts …………… 11 3 Symbiotic associations in gutless oligochaetes ………………………………… 13 3.1 Biogeography and phylogeny of the hosts …..……………………………. 13 3.2 The environment …..…………………………………………………………. 14 3.3 Structure of the symbiosis ………..…………………………………………. 16 3.4 Transmission of the symbionts ………..……………………………………. 18 3.5 Molecular characterization of the symbionts …..………………………….. 19 3.6 Function of the symbionts in gutless oligochaetes ..…..…………………. 20 4 Goals of this thesis …….………………………………………………………….. -
Large Scale Biogeography and Environmental Regulation of 2 Methanotrophic Bacteria Across Boreal Inland Waters
1 Large scale biogeography and environmental regulation of 2 methanotrophic bacteria across boreal inland waters 3 running title : Methanotrophs in boreal inland waters 4 Sophie Crevecoeura,†, Clara Ruiz-Gonzálezb, Yves T. Prairiea and Paul A. del Giorgioa 5 aGroupe de Recherche Interuniversitaire en Limnologie et en Environnement Aquatique (GRIL), 6 Département des Sciences Biologiques, Université du Québec à Montréal, Montréal, Québec, Canada 7 bDepartment of Marine Biology and Oceanography, Institut de Ciències del Mar (ICM-CSIC), Barcelona, 8 Catalunya, Spain 9 Correspondence: Sophie Crevecoeur, Canada Centre for Inland Waters, Water Science and Technology - 10 Watershed Hydrology and Ecology Research Division, Environment and Climate Change Canada, 11 Burlington, Ontario, Canada, e-mail: [email protected] 12 † Current address: Canada Centre for Inland Waters, Water Science and Technology - Watershed Hydrology and Ecology Research Division, Environment and Climate Change Canada, Burlington, Ontario, Canada 1 13 Abstract 14 Aerobic methanotrophic bacteria (methanotrophs) use methane as a source of carbon and energy, thereby 15 mitigating net methane emissions from natural sources. Methanotrophs represent a widespread and 16 phylogenetically complex guild, yet the biogeography of this functional group and the factors that explain 17 the taxonomic structure of the methanotrophic assemblage are still poorly understood. Here we used high 18 throughput sequencing of the 16S rRNA gene of the bacterial community to study the methanotrophic 19 community composition and the environmental factors that influence their distribution and relative 20 abundance in a wide range of freshwater habitats, including lakes, streams and rivers across the boreal 21 landscape. Within one region, soil and soil water samples were additionally taken from the surrounding 22 watersheds in order to cover the full terrestrial-aquatic continuum. -
Monitoring of Bacterial Communities in a Phytoremediation Plant for the Decontamination of Polluted Marine Sediments”
Research Doctorate School in Biological and Molecular Sciences Cycle XXV “Monitoring of bacterial communities in a phytoremediation plant for the decontamination of polluted marine sediments” Candidate: Carolina Chiellini Supervisors: Dott. Giulio Petroni Prof. Ing. Renato Iannelli 2013 BIO/05 INDEX SUMMARY .......................................................................................................................................................... 1 RIASSUNTO ........................................................................................................................................................ 3 1 INTRODUCTION: AN OVERVIEW ON THE TOPIC ........................................................................... 5 1.1 THE NORMATIVE CONCERNING DREDGED SEDIMENTS ........................................................................ 7 1.1.1 The European scenario ......................................................................................................................... 7 1.1.2 The Italian scenario ................................................................................................................................ 9 1.2 THE PROBLEM OF DREDGED SEDIMENTS ................................................................................................ 12 1.2.1 Types and sources of pollutants in marine sediments .............................................................. 12 1.2.2 How to treat polluted sediments ...................................................................................................... -
Facultative Anerobe and Obligate Anaerobe Meaning
Facultative Anerobe And Obligate Anaerobe Meaning Interocular Bill always exsect his reen if Hammad is stagier or react shily. Is Mustafa Gallic or overnice when disport some cuteness affiliates balletically? When Grace dulcify his Adriatic segues not revivably enough, is Alberto snobby? Desert soil conditions, including the analysis suggestions: aerobic and obligate anaerobes and fermentation This, combined with the diffusion of jeopardy from green top hence the broth produces a horizon of oxygen concentrations in the media along a depth. MM, originally designed to enrich methanogenic archaea. How do facultative meaning that means mainly included classifications: these products characteristic of versatile biocatalysts for facultatively anaerobic. This means that facultative anaerobe, mean less is related to combat drug dosage set are facultatively anaerobic. Can recover depend by the results of the collection if money from a swab of the access the discover? Which means to ensure that. Amazon region of Brazil. This you first smudge on harmful epiphytic interactions between Chlamydomonas species has red ceramiaceaen algae. The obligate anaerobes and facultative anaerobe is required for example, facultative anerobe and obligate anaerobe meaning in. Many species, including the pea aphid, also show variation in their reproductive mode squeeze the population level, were some lineages reproducing by cyclical parthenogenesis and others by permanent parthenogenesis. In input, a savings of genomic features that effectively predicts the environmental preference of a bench of organisms would aid scientific researchers in gaining a mechanistic understanding of the requirements a wicked environment imposes on its microbial inhabitants. You mean that facultative meaning and facultatively anaerobic bacteria can cells were classified into contaminants that. -
Novel Facultative Methylocella Strains Are Active Methane Consumers at Terrestrial Natural Gas Seeps Muhammad Farhan Ul Haque1,2* , Andrew T
Farhan Ul Haque et al. Microbiome (2019) 7:134 https://doi.org/10.1186/s40168-019-0741-3 RESEARCH Open Access Novel facultative Methylocella strains are active methane consumers at terrestrial natural gas seeps Muhammad Farhan Ul Haque1,2* , Andrew T. Crombie3* and J. Colin Murrell1 Abstract Background: Natural gas seeps contribute to global climate change by releasing substantial amounts of the potent greenhouse gas methane and other climate-active gases including ethane and propane to the atmosphere. However, methanotrophs, bacteria capable of utilising methane as the sole source of carbon and energy, play a significant role in reducing the emissions of methane from many environments. Methylocella-like facultative methanotrophs are a unique group of bacteria that grow on other components of natural gas (i.e. ethane and propane) in addition to methane but a little is known about the distribution and activity of Methylocella in the environment. The purposes of this study were to identify bacteria involved in cycling methane emitted from natural gas seeps and, most importantly, to investigate if Methylocella-like facultative methanotrophs were active utilisers of natural gas at seep sites. Results: The community structure of active methane-consuming bacteria in samples from natural gas seeps from Andreiasu Everlasting Fire (Romania) and Pipe Creek (NY, USA) was investigated by DNA stable isotope probing (DNA- SIP) using 13C-labelled methane. The 16S rRNA gene sequences retrieved from DNA-SIP experiments revealed that of various active methanotrophs, Methylocella was the only active methanotrophic genus common to both natural gas seep environments. We also isolated novel facultative methanotrophs, Methylocella sp. -
The Influence of Sodium Chloride on the Performance of Gammarus Amphipods and the Community Composition of Microbes Associated with Leaf Detritus
THE INFLUENCE OF SODIUM CHLORIDE ON THE PERFORMANCE OF GAMMARUS AMPHIPODS AND THE COMMUNITY COMPOSITION OF MICROBES ASSOCIATED WITH LEAF DETRITUS By Shelby McIlheran Leaf litter decomposition is a fundamental part of the carbon cycle and helps support aquatic food webs along with being an important assessment of the health of rivers and streams. Disruptions in this organic matter breakdown can signal problems in other parts of ecosystems. One disruption is rising chloride concentrations. Chloride concentrations are increasing in many rivers worldwide due to anthropogenic sources that can harm biota and affect ecosystem processes. Elevated chloride concentrations can lead to lethal or sublethal impacts. While many studies have shown that excessive chloride uptake impacts health (e.g. lowered respiration and growth rates) in a wide variety of aquatic organisms including microbes and benthic invertebrates). The impacts of high chloride concentrations on decomposers are less well understood. My research objective was to assess how increasing chloride concentrations affect the performance and diversity of decomposer organisms in freshwater systems. I experimentally manipulated chloride concentrations in microcosms containing leaves colonized by microbes or containing leaves, microbes and amphipods. Respiration rate, decomposition, and community composition of the microbes were measured along with the amphipod growth rate, egestion rate, and mortality. Elevated chloride concentration did not impact microbial respiration rates or leaf decomposition, but had large impacts on bacteria community composition. It did cause a decrease in instantaneous growth rate, and 100% mortality in the highest amphipod chloride treatment, but amphipod egestion rate was not significantly affected. The results of my research suggest that the widespread increases in chloride concentrations in rivers will have an impact on decomposer communities in these systems. -
Antibus Revised Thesis 11-16 For
Molecular and Cultivation-based Characterization of Ancient Algal Mats from the McMurdo Dry Valleys, Antarctica A thesis submitted to Kent State University in partial fulfillment of the requirements for the degree of Master of Science by Doug Antibus December, 2009 Thesis written by Doug Antibus B.S., Kent State University, 2007 M.S., Kent State University, 2009 Approved by Dr. Christopher B. Blackwood Advisor Dr. James L. Blank Chair, Department of Biological Sciences Dr. Timothy Moerland Dean, College of Arts and Sciences iii TABLE OF CONTENTS LIST OF TABLES………………………………………………………………………..iv LIST OF FIGURES ……………………………………………………………………...vi ACKNOWLEDGEMENTS…………………………………………………………......viii CHAPTER I: General Introduction……………………………………………………….1 CHAPTER II: Molecular Characterization of Ancient Algal Mats from the McMurdo Dry Valleys, Antarctica: A Legacy of Genetic Diversity Introduction……………………………………………………………....22 Results and Discussion……………………………………………..……27 Methods…………………………………………………………………..51 Literature Cited…………………………………………………………..59 CHAPTER III: Recovery of Viable Bacteria from Ancient Algal Mats from the McMurdo Dry Valleys, Antarctica Introduction………………………………………………..……………..78 Methods…………………………………………………………………..80 Results……………………………………………………………...…….88 Discussion…………………………………………………………...….106 Literature Cited………………………………………………………....109 CHAPTER IV: General Discussion…………………………………………………….120 iii LIST OF TABLES Chapter II: Molecular Characterization of Ancient Algal Mats from the McMurdo Dry Valleys, Antarctica: A Legacy of Genetic Diversity -
Inter-Domain Horizontal Gene Transfer of Nickel-Binding Superoxide Dismutase 2 Kevin M
bioRxiv preprint doi: https://doi.org/10.1101/2021.01.12.426412; this version posted January 13, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 Inter-domain Horizontal Gene Transfer of Nickel-binding Superoxide Dismutase 2 Kevin M. Sutherland1,*, Lewis M. Ward1, Chloé-Rose Colombero1, David T. Johnston1 3 4 1Department of Earth and Planetary Science, Harvard University, Cambridge, MA 02138 5 *Correspondence to KMS: [email protected] 6 7 Abstract 8 The ability of aerobic microorganisms to regulate internal and external concentrations of the 9 reactive oxygen species (ROS) superoxide directly influences the health and viability of cells. 10 Superoxide dismutases (SODs) are the primary regulatory enzymes that are used by 11 microorganisms to degrade superoxide. SOD is not one, but three separate, non-homologous 12 enzymes that perform the same function. Thus, the evolutionary history of genes encoding for 13 different SOD enzymes is one of convergent evolution, which reflects environmental selection 14 brought about by an oxygenated atmosphere, changes in metal availability, and opportunistic 15 horizontal gene transfer (HGT). In this study we examine the phylogenetic history of the protein 16 sequence encoding for the nickel-binding metalloform of the SOD enzyme (SodN). A comparison 17 of organismal and SodN protein phylogenetic trees reveals several instances of HGT, including 18 multiple inter-domain transfers of the sodN gene from the bacterial domain to the archaeal domain. -
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