Sökning: "gene richness"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden gene richness.

  1. 1. Metabolic Modeling of the Gut Microbiome-Host Interactions and Meta’omics Integration

    Författare :Saeed Shoaie; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; meta’omics; complexity; obesity; network topology; Gut microbiome; genome-scale metabolic model; gene richness; CASINO; systems biology; flux balance analysis; diabetes;

    Sammanfattning : A large number of microbes with different strain types occupy the human gut. These gut inhabitant microbes have key roles in decomposition of indigestible dietary macronutrients before they are metabolised by the host. LÄS MER

  2. 2. Phenolics, Nitrogen, and Biotic Interactions : A Study of Phenylpropanoid Metabolites and Gene Expression in the Leaves of Populus tremula

    Författare :Vicki Huizu Decker; Benedicte Riber Albrectsen; George Newcombe; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Populus tremula; condensed tannins; salicinoids; phenolics; genetic variation; soil nitrogen fertilization; herbivory; biology; biologi;

    Sammanfattning : European aspen (Populus tremula) is a fast growing tree species, rich in phenolic compounds. Defense theories suggest that soil nitrogen greatly influence plant allocation togrowth and defense; however, the allocation priorities are not well understood. LÄS MER

  3. 3. Microbially induced concrete degradation in subsea tunnels - Community structure of biofilms from sprayed reinforced concrete in the Oslofjord tunnel

    Författare :Sabina Karacic; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microbial community structure; concrete deterioration; biocorrosion; 16S rRNA gene sequences; biofilm; subsea tunnel;

    Sammanfattning : Microbially induced concrete deterioration has been discovered in several Norwegian subsea tunnels with significant disintegration of the calcium silicate hydrate (C-S-H) and steel fibre corrosion in areas with leakages of saline groundwater. Complex microbial biofilm activity together with abiotic attack from saline ground water, with high concentrations of Cl−, SO42−, Mg2+ and HCO3−, are responsible for the degradation in the specific subsea tunnel environment. LÄS MER

  4. 4. Phylogenetic and ecological studies in lichenology : including studies of both mycobiont and photobiont

    Författare :Åsa Dahlkild; Anders Tehler; Ingvar Kärnefelt; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Phylogeny; ecology; lichen; photobiont; mycobiont; Systematics and phylogenetics; Systematik och fylogeni;

    Sammanfattning : In this thesis different aspects in lichens are investigated, namely, the phylogeny of mycobiont and photobiont, and ecology in the form of species richness of certain habitats of the Uppland province, Sweden.Analyses of ITS sequences of the lichenized fungi genus Roccella (Roccellaceae) provide an intrageneric topology of the genus with emphasis on the European, Mediterranean and Macaronesian species. LÄS MER

  5. 5. Structure and function of microbial communities in constructed wetlands - influence of environmental parameters and pesticides on denitrifying bacteria

    Författare :Susann Milenkovski; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fungicide; concentration-response curves; nosZ; nirS; nirK; bacterial activity; denitrification; bacterial community composition; herbicide; insecticide;

    Sammanfattning : This thesis addresses the interactions and relationships between natural aquatic bacterial communities, environmental parameters, anthropogenic chemicals and the denitrification pathway in the habitat of agricultural constructed wetlands. The main aim was to gain fundamental knowledge of the drivers behind the processes of the denitrification (i.e. LÄS MER