Sökning: "biologi 1-3"

Visar resultat 1 - 5 av 67 avhandlingar innehållade orden biologi 1-3.

  1. 1. Signalling between plants and microorganisms

    Författare :Ulrika Troedsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; symbiosis; Chitinase; rhizobium; mycorrhiza; plant; glucanase; Biology; Biologi;

    Sammanfattning : Plants and microbes can interact in several ways. Plants can be attacked by different types of pathogens like fungi, virus and bacteria, but can also form symbioses with fungi and bacteria. Certain common antimicrobial proteins are produced by the plants regardless of the type of microbial interaction with the plant. LÄS MER

  3. 2. Comparative avian developmental toxicity of PFAAs

    Författare :Marcus Nordén; Magnus Engwall; Krister Halldin; Anders Bignert; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; chicken; herring gull; cormorant; PFAA; PFOS; PFOA; toxicity; levels; Biology; Biologi;

    Sammanfattning : Perfluoroalkyl acids (PFAAs) are persistent organic pollutants that can commonly be found in environmental matrixes and wildlife from all over the globe. The PFAAs have been used in applications such as water and dirt repelling treatments for textiles, oil-resistant paper coatings and fire-fighting foams. LÄS MER

  4. 3. Explaining temporal variations in soil respiration rates and delta13C in coniferous forest ecosystems

    Författare :Daniel Comstedt; Alf Ekblad; Rolf Siegwolf; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Autotrophic; Boreal forest; Elevated CO2; 13C; Natural abundance of stable isotopes; Picea abies; PLS; Root respiration; Soil respiration; Biology; Biologi; Biology; Biologi;

    Sammanfattning : Soils of Northern Hemisphere forests contain a large part of the global terrestrial carbon (C) pool. Even small changes in this pool can have large impact on atmospheric [CO2] and the global climate. LÄS MER

  5. 4. Seaweed Invasions and Novel Chemical Defences

    Författare :Swantje Enge; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biological invasions; enemy release; increased competitive ability; novel weapon; chemical defence; plant-herbivore interactions; competition; seaweeds; Bonnemaisonia hamifera;

    Sammanfattning : Biological invasions pose a risk to the biodiversity and the functioning of ecosystems in invaded areas. The reasons why some introduced species become dominant and widespread in their new environments is still largely an unsettled question. LÄS MER

  7. 5. Biosynthesis of bacterial polysaccharides by novel glycosyltransferase enzymes

    Författare :Shu-Chieh Chang; Yves S. Y. Hsieh; Ute Römling; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biotechnology; Bioteknologi;

    Sammanfattning : Within the intricate microbiological realm, exopolysaccharides (EPS) emerge as a significant class of high molecular weight polysaccharides, serving pivotal roles in bacterial survival, virulence, communication, and defense against environmental adversities. The versatile nature of bacterial EPS extends beyond mere biological functions, reaching into medications, cosmetics, functional food, and sustainable industries. LÄS MER