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Visar resultat 21 - 25 av 42 avhandlingar som matchar ovanstående sökkriterier.

  1. 21. Abiotic stress and plant-microbe interactions in Norway spruce

    Författare :Julia Christa Haas; Vaughan Hurry; Nathaniel Street; Torgny Näsholm; Jennifer Baltzer; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Norway spruce; boreal forest; cold; drought; bacteria; fungi; plant-microbe interactions; climate change;

    Sammanfattning : Norway spruce (Picea abies) is a dominant tree species in boreal forests with extensive ecological and economic value. Climate change is threatening these ecosystems, with rising temperatures impacting cold hardening and increasing drought stress in regions experiencing lower precipitation. LÄS MER

  3. 22. Physiological integration and morphological plasticity in extensive clonal plants

    Författare :Tina D'Hertefeldt; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plant ecology; Maianthemum; Carex; Clonal plants; tracers; Växtekologi;

    Sammanfattning : Clonal plants show a large variation in physiological integration, i.e. the translocation of resources among ramets within the clone. LÄS MER

  4. 23. The influence of soil pH on plant and microbial communities in sandy grasslands

    Författare :Linda-Maria Mårtensson; Biodiversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; in situ 13CO2 labelling; disturbance; sandy grasslands; species diversity; acidification; soil pH; microbial biomass; C allocation;

    Sammanfattning : Sandy, calcareous grasslands are species rich temperate semi-natural grasslands. The species composition in 136 plots was analysed in relation to soil chemistry parameters; extractable P and N, soil pH and lime content. LÄS MER

  5. 24. β-Mannoside hydrolases from clan A – Structural enzymology, subsite engineering and transglycosylation

    Författare :Anna Rosengren; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; β-mannosidase; β-mannanase; enzymology; kinetics; MALDI-TOF MS; protein engineering; protein structure; subsite organisation; transglycosylation;

    Sammanfattning : β-Mannoside hydrolases are enzymes that are involved in conversion of the major soft-wood hemicellulose O-acetyl-galactoglucomannan, an important renewable biomass resource. They belong to clan A of glycoside hydrolases and share a common (β/α)8-TIM barrel fold. LÄS MER

  7. 25. Microorganisms in the Indoor Environment Analysis and Structure-Bioactivity Relationships

    Författare :Anita Saraf; Avdelningen för medicinsk mikrobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Limulus assay; bioactivity; ergosterol; muramic acid; LPS; organic dust; GC-MS; GC-MSMS; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Sammanfattning : Inhalation of air-borne microorganisms and components thereof can cause illnesses and diseases. However, lack of specific and sensitive methods for exposure assessment can pose problems in predicting health outcomes. LÄS MER