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  1. Article ; Online: Complete Genome Sequences of Hydrogenotrophic Denitrifiers.

    Duffner, Clara / Kublik, Susanne / Fösel, Bärbel / Schloter, Michael / Schulz, Stefanie

    Microbiology resource announcements

    2022  Volume 11, Issue 1, Page(s) e0102021

    Abstract: Hydrogenotrophic denitrifiers are important bacteria for nitrate removal in wastewater and aquifers. Here, we report the complete genome sequences of three hydrogenotrophic denitrifiers, namely, Dechloromonas denitrificans strain D110, Ferribacterium ... ...

    Abstract Hydrogenotrophic denitrifiers are important bacteria for nitrate removal in wastewater and aquifers. Here, we report the complete genome sequences of three hydrogenotrophic denitrifiers, namely, Dechloromonas denitrificans strain D110, Ferribacterium limneticum strain F76, and Hydrogenophaga taeniospiralis strain H3, all of which were isolated from a nitrate-polluted aquifer in Bavaria (Germany).
    Language English
    Publishing date 2022-01-13
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/mra.01020-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Comparative Metagenomic Analysis of Bacteriophages and Prophages in Gnotobiotic Mouse Models.

    Ishola, Oluwaseun A / Kublik, Susanne / Durai Raj, Abilash Chakravarthy / Ohnmacht, Caspar / Schulz, Stefanie / Foesel, Bärbel U / Schloter, Michael

    Microorganisms

    2024  Volume 12, Issue 2

    Abstract: Gnotobiotic murine models are important to understand microbiota-host interactions. Despite the role of bacteriophages as drivers for microbiome structure and function, there is no information about the structure and function of the gut virome in ... ...

    Abstract Gnotobiotic murine models are important to understand microbiota-host interactions. Despite the role of bacteriophages as drivers for microbiome structure and function, there is no information about the structure and function of the gut virome in gnotobiotic models and the link between bacterial and bacteriophage/prophage diversity. We studied the virome of gnotobiotic murine Oligo-MM12 (12 bacterial species) and reduced Altered Schaedler Flora (ASF, three bacterial species). As reference, the virome of Specific Pathogen-Free (SPF) mice was investigated. A metagenomic approach was used to assess prophages and bacteriophages in the guts of 6-week-old female mice. We identified a positive correlation between bacteria diversity, and bacteriophages and prophages.
    Language English
    Publishing date 2024-01-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms12020255
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Genotypic and phenotypic characterization of hydrogenotrophic denitrifiers

    Duffner, Clara / Kublik, Susanne / Fösel, Bärbel / Frostegård, Åsa / Schloter, Michael / Bakken, Lars / Schulz, Stefanie

    Environmental microbiology. 2022 Apr., v. 24, no. 4

    2022  

    Abstract: Stimulating litho‐autotrophic denitrification in aquifers with hydrogen is a promising strategy to remove excess NO₃⁻, but it often entails accumulation of the cytotoxic intermediate NO₂⁻ and the greenhouse gas N₂O. To explore if these high NO₂⁻ and N₂O ... ...

    Abstract Stimulating litho‐autotrophic denitrification in aquifers with hydrogen is a promising strategy to remove excess NO₃⁻, but it often entails accumulation of the cytotoxic intermediate NO₂⁻ and the greenhouse gas N₂O. To explore if these high NO₂⁻ and N₂O concentrations are caused by differences in the genomic composition, the regulation of gene transcription or the kinetics of the reductases involved, we isolated hydrogenotrophic denitrifiers from a polluted aquifer, performed whole‐genome sequencing and investigated their phenotypes. We therefore assessed the kinetics of NO₂⁻, NO, N₂O, N₂ and O₂ as they depleted O₂ and transitioned to denitrification with NO₃⁻ as the only electron acceptor and hydrogen as the electron donor. Isolates with a complete denitrification pathway, although differing intermediate accumulation, were closely related to Dechloromonas denitrificans, Ferribacterium limneticum or Hydrogenophaga taeniospiralis. High NO₂⁻ accumulation was associated with the reductases' kinetics. While available, electrons only flowed towards NO₃⁻ in the narG‐containing H. taeniospiralis but flowed concurrently to all denitrification intermediates in the napA‐containing D. denitrificans and F. limneticum. The denitrification regulator RegAB, present in the napA strains, may further secure low intermediate accumulation. High N₂O accumulation only occurred during the transition to denitrification and is thus likely caused by delayed N₂O reductase expression.
    Keywords Dechloromonas ; Ferribacterium limneticum ; Hydrogenophaga taeniospiralis ; aquifers ; cytotoxicity ; denitrification ; denitrifying microorganisms ; genomics ; greenhouse gases ; hydrogen ; oxidoreductases ; phenotype ; transcription (genetics)
    Language English
    Dates of publication 2022-04
    Size p. 1887-1901.
    Publishing place John Wiley & Sons, Inc.
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 2020213-1
    ISSN 1462-2920 ; 1462-2912
    ISSN (online) 1462-2920
    ISSN 1462-2912
    DOI 10.1111/1462-2920.15921
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  4. Article: Editorial:

    Huber, Katharina J / Pester, Michael / Eichorst, Stephanie A / Navarrete, Acacio A / Foesel, Bärbel U

    Frontiers in microbiology

    2022  Volume 13, Page(s) 960602

    Language English
    Publishing date 2022-06-24
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.960602
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Genotypic and phenotypic characterization of hydrogenotrophic denitrifiers.

    Duffner, Clara / Kublik, Susanne / Fösel, Bärbel / Frostegård, Åsa / Schloter, Michael / Bakken, Lars / Schulz, Stefanie

    Environmental microbiology

    2022  Volume 24, Issue 4, Page(s) 1887–1901

    Abstract: Stimulating litho-autotrophic denitrification in aquifers with hydrogen is a promising strategy to remove excess ... ...

    Abstract Stimulating litho-autotrophic denitrification in aquifers with hydrogen is a promising strategy to remove excess NO
    MeSH term(s) Denitrification ; Hydrogen/metabolism ; Nitrates/metabolism ; Nitrogen Dioxide ; Oxidoreductases/genetics ; Oxidoreductases/metabolism ; Phenotype
    Chemical Substances Nitrates ; Hydrogen (7YNJ3PO35Z) ; Oxidoreductases (EC 1.-) ; Nitrogen Dioxide (S7G510RUBH)
    Language English
    Publishing date 2022-02-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2020213-1
    ISSN 1462-2920 ; 1462-2912
    ISSN (online) 1462-2920
    ISSN 1462-2912
    DOI 10.1111/1462-2920.15921
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Short term effects of climate change and intensification of management on the abundance of microbes driving nitrogen turnover in montane grassland soils

    Andrade-Linares, Diana R / Zistl-Schlingmann, Marcus / Foesel, Baerbel / Dannenmann, Michael / Schulz, Stefanie / Schloter, Michael

    Science of the total environment. 2021 Aug. 01, v. 780

    2021  

    Abstract: Montane grasslands in Europe are exposed to increasing temperatures twice as fast as the global average. Changes in climatic conditions are possibly accompanied by an increase in land use intensity, caused by a prolongation of the vegetation period and ... ...

    Abstract Montane grasslands in Europe are exposed to increasing temperatures twice as fast as the global average. Changes in climatic conditions are possibly accompanied by an increase in land use intensity, caused by a prolongation of the vegetation period and the need to improve productivity. Therefore, the investigation of combined effects of climate change and land use intensity is needed to further implement agricultural management strategies. Here we present results from a study performed in the pre-alpine region of southern Germany, where intact plant-soil mesocosms from grasslands, were translocated along an altitudinal gradient, resulting in an increase in soil temperature (moderate treatment: +0.5 K; strong treatment: +1.9 K warming) during the experimental period. Additionally, we applied an extensive or intensive agricultural management (two vs. five times of mowing and slurry application) on the transplanted mesocosms. After an exposure of one year, we measured plant growth and soil properties and quantified abundances of soil microorganisms catalyzing key steps in the nitrogen (N) cycle. Our data indicate, significant interactions between climate change and management. For example, microbial biomass was significantly reduced (−47.7% and −49.8% for Cₘᵢc and Nₘᵢc respectively), which was further accompanied by lower abundances of N₂-fixing bacteria (up to −89,3%), as well as ammonia oxidizing bacteria (−81.4%) under intensive management, whereas N-mineralizing bacteria increased in abundance (up to +139.8%) under extensive management. Surprisingly, the abundances of denitrifying bacteria as well as mean N₂O emissions were not affected by the treatments. Overall, our data suggest pronounced shifts in the abundance of microbes driving the N cycle in soil as a result of combined climate change and land use intensification already after a short simulation period of one year.
    Keywords agricultural management ; altitude ; ammonia ; climate change ; denitrification ; grasslands ; land use ; microbial biomass ; nitrogen ; nitrogen cycle ; plant growth ; slurries ; soil temperature ; Germany
    Language English
    Dates of publication 2021-0801
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2021.146672
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  7. Article ; Online: Complete and Draft Genome Sequences of 48 Staphylococcus aureus Isolates Obtained from Atopic Dermatitis Patients and Healthy Controls.

    Wang, Zhongjie / Hülpüsch, Claudia / Schwierzeck, Vera / Alharbi, Sulaiman Ali / Reiger, Matthias / Traidl-Hoffmann, Claudia / Schloter, Michael / Foesel, Bärbel U

    Microbiology resource announcements

    2022  Volume 11, Issue 4, Page(s) e0007222

    Abstract: Staphylococcus aureus is a widely distributed, opportunistic pathogen and has been linked to the human skin disease atopic dermatitis (AD). Here, we present 44 complete and 4 draft genome sequences of S. aureus strains isolated from the nose and skin of ... ...

    Abstract Staphylococcus aureus is a widely distributed, opportunistic pathogen and has been linked to the human skin disease atopic dermatitis (AD). Here, we present 44 complete and 4 draft genome sequences of S. aureus strains isolated from the nose and skin of AD patients and healthy controls from a German study cohort.
    Language English
    Publishing date 2022-03-08
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/mra.00072-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Differential Response of Acidobacteria to Water Content, Soil Type, and Land Use During an Extended Drought in African Savannah Soils.

    Huber, Katharina J / Vieira, Selma / Sikorski, Johannes / Wüst, Pia K / Fösel, Bärbel U / Gröngröft, Alexander / Overmann, Jörg

    Frontiers in microbiology

    2022  Volume 13, Page(s) 750456

    Abstract: Although climate change is expected to increase the extent of drylands worldwide, the effect of drought on the soil microbiome is still insufficiently understood as for dominant but little characterized phyla like the Acidobacteria. In the present study ... ...

    Abstract Although climate change is expected to increase the extent of drylands worldwide, the effect of drought on the soil microbiome is still insufficiently understood as for dominant but little characterized phyla like the Acidobacteria. In the present study the active acidobacterial communities of Namibian soils differing in type, physicochemical parameters, and land use were characterized by high-throughput sequencing. Water content, pH, major ions and nutrients were distinct for sandy soils, woodlands or dry agriculture on loamy sands. Soils were repeatedly sampled over a 2-year time period and covered consecutively a strong rainy, a dry, a normal rainy and a weak rainy season. The increasing drought had differential effects on different soils. Linear modeling of the soil water content across all sampling locations and sampling dates revealed that the accumulated precipitation of the preceding season had only a weak, but statistically significant effect, whereas woodland and irrigation exerted a strong positive effect on water content. The decrease in soil water content was accompanied by a pronounced decrease in the fraction of active Acidobacteria (7.9-0.7%) while overall bacterial community size/cell counts remained constant. Notably, the strongest decline in the relative fraction of Acidobacteria was observed after the first cycle of rainy and dry season, rather than after the weakest rainy season at the end of the observation period. Over the 2-year period, also the β-diversity of soil Acidobacteria changed. During the first year this change in composition was related to soil type (loamy sand) and land use (woodland) as explanatory variables. A total of 188 different acidobacterial sequence variants affiliated with the "
    Language English
    Publishing date 2022-02-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.750456
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Intramuscular vaccination against SARS-CoV-2 transiently induces neutralizing IgG rather than IgA in the saliva.

    Winklmeier, Stephan / Rübsamen, Heike / Özdemir, Ceren / Wratil, Paul R / Lupoli, Gaia / Stern, Marcel / Schneider, Celine / Eisenhut, Katharina / Ho, Samantha / Wong, Hoi Kiu / Taskin, Damla / Petry, Marvin / Weigand, Michael / Eichhorn, Peter / Foesel, Bärbel U / Mader, Simone / Keppler, Oliver T / Kümpfel, Tania / Meinl, Edgar

    Frontiers in immunology

    2024  Volume 15, Page(s) 1330864

    Abstract: The mucosal immunity is crucial for restricting SARS-CoV-2 at its entry site. Intramuscularly applied vaccines against SARS-CoV-2 stimulate high levels of neutralizing Abs in serum, but the impact of these intramuscular vaccinations on features of ... ...

    Abstract The mucosal immunity is crucial for restricting SARS-CoV-2 at its entry site. Intramuscularly applied vaccines against SARS-CoV-2 stimulate high levels of neutralizing Abs in serum, but the impact of these intramuscular vaccinations on features of mucosal immunity is less clear. Here, we analyzed kinetic and functional properties of anti-SARS-CoV-2 Abs in the saliva after vaccination with BNT162b2. We analyzed a total of 24 healthy donors longitudinally for up to 16 months. We found that specific IgG appeared in the saliva after the second vaccination, declined thereafter and reappeared after the third vaccination. Adjusting serum and saliva for the same IgG concentration revealed a strong correlation between the reactivity in these two compartments. Reactivity to VoCs correlated strongly as seen by ELISAs against RBD variants and by live-virus neutralizing assays against replication-competent viruses. For further functional analysis, we purified IgG and IgA from serum and saliva. In vaccinated donors we found neutralizing activity towards authentic virus in the IgG, but not in the IgA fraction of the saliva. In contrast, IgA with neutralizing activity appeared in the saliva only after breakthrough infection. In serum, we found neutralizing activity in both the IgA and IgG fractions. Together, we show that intramuscular mRNA vaccination transiently induces a mucosal immunity that is mediated by IgG and thus differs from the mucosal immunity after infection. Waning of specific mucosal IgG might be linked to susceptibility for breakthrough infection.
    MeSH term(s) Humans ; BNT162 Vaccine ; Breakthrough Infections ; COVID-19/prevention & control ; COVID-19 Vaccines ; SARS-CoV-2 ; Saliva ; Vaccination ; Immunoglobulin A ; Immunoglobulin G
    Chemical Substances BNT162 Vaccine ; COVID-19 Vaccines ; Immunoglobulin A ; Immunoglobulin G
    Language English
    Publishing date 2024-02-05
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2024.1330864
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  10. Article ; Online: Complete Genome Sequence of Lactococcus lactis subsp.

    Wang, Zhongjie / Minarsch, Eva-Maria L / Kublik, Susanne / Heine, Holger / Schloter, Michael / Foesel, Baerbel U

    Microbiology resource announcements

    2020  Volume 9, Issue 41

    Abstract: Early childhood exposure to a farming environment has been found to be protective against asthma and other atopic disorders. Here, we report the complete genome sequence ... ...

    Abstract Early childhood exposure to a farming environment has been found to be protective against asthma and other atopic disorders. Here, we report the complete genome sequence of
    Language English
    Publishing date 2020-10-08
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/MRA.00777-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

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