Sökning: "uncultured microbial diversity"

Hittade 5 avhandlingar innehållade orden uncultured microbial diversity.

  1. 1. Expanding the Chlamydiae tree : Insights into genome diversity and evolution

    Författare :Jennah E. Dharamshi; Thijs J. G. Ettema; Alexander Probst; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; PVC superphylum; Chlamydiae; chlamydia; intracellular; symbiosis; endosymbiont; pathogen; marine sediment; sponge microbiome; metagenomics; uncultured microbial diversity; phylogenomics; microbial evolution; eukaryote evolution; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

    Sammanfattning : Chlamydiae is a phylum of obligate intracellular bacteria. They have a conserved lifecycle and infect eukaryotic hosts, ranging from animals to amoeba. Chlamydiae includes pathogens, and is well-studied from a medical perspective. LÄS MER

  3. 2. Pelagic microorganisms in the northern Baltic Sea : Ecology, diversity and food web dynamics

    Författare :Johnny Berglund; Agneta Andersson; Ramon Massana; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; resource limitation; predation limitation; microbial food web; heterotrophic microorganisms; nanoflagellates; ciliates; protists; resource heterogeneity; chrysomonads; chrysophytes; group-specific PCR-DGGE primers; Baltic Sea; Marine ecology; Marin ekologi;

    Sammanfattning : Heterotrophic microorganisms are important for the flow of carbon and nutrients in the sea. Bacteria, nanoflagellates and ciliates are relevant components of the pelagic food web. In order to be able to predict the outcome of e.g. LÄS MER

  4. 3. Genomic and evolutionary exploration of Asgard archaea

    Författare :Eva F. Caceres; Thijs J. G. Ettema; Simonetta Gribaldo; Uppsala universitet; []
    Nyckelord :archaea; Asgard; eukaryogenesis; metagenomics; genome binning; phylogenetics; phylogenomics; comparative genomics; gene tree-species tree reconciliation; ancestral reconstruction; long-read metagenomics;

    Sammanfattning : Current evolutionary theories postulate that eukaryotes emerged from the symbiosis of an archaeal host with, at least, one bacterial symbiont. However, our limited grasp of microbial diversity hampers insights into the features of the prokaryotic ancestors of eukaryotes. LÄS MER

  5. 4. Bacteria that escape predation : waterborne pathogens and their relatives

    Författare :Karolina I. A. Eriksson; Agneta Andersson; Johanna Thelaus; Jon Ahlinder; David Sundell; Klaus Jürgens; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bacterial pathogens; protozoa; predation resistance; aquatic microbiology; climate change; opportunists; humification; iron; environmental science; miljövetenskap; mikrobiologi; Microbiology;

    Sammanfattning : The hidden presence of opportunistic bacterial pathogens in the environment evokes concerns about emerging diseases, especially in the light of climate change. The co-evolution of bacteria and their predators (protozoa) has led to bacterial defence strategies of which some contribute to the ability of bacteria to cause disease. LÄS MER

  7. 5. Single-cell population genetics and dispersal limitation of a bloom-forming microalga

    Författare :Raphael Gollnisch; Enhet akvatisk ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gonyostomum semen; algal blooms; invasive species; population structure; RADseq; single-cell whole genome amplification; multiple displacement amplification; calcium; pH; iron;

    Sammanfattning : Microalgal range expansions are increasing in frequency and magnitude worldwide mostly due to anthropogenic factors. However, they often remain unnoticed until mass development (algal blooms) occurs due to difficulties in detection when population densities are low. LÄS MER