Sökning: "clonal structure"

Visar resultat 11 - 15 av 35 avhandlingar innehållade orden clonal structure.

  1. 11. Insights into population structure and epidemiology of Phytophthora infestans from Nicaragua

    Författare :Jorge Ulises Blandón-Díaz; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Late blight caused by Phytophthora infestans (Mont) de Bary is a constraint to both potato and tomato crops in the northern highlands of Nicaragua. This thesis describes studies on population structure and epidemiology of P. infestans from Nicaragua. The genotypic and phenotypic variation in isolates of P. LÄS MER

  3. 12. Mechanistical studies on gap junctions and their role in tumour promotion : structure-activity relationships of polychlorinated biphelyls

    Författare :Yvonne Bager; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :gap junctional intercellular communication; phosphorylation; tumour promotion; alteredhepatic foci; rat liver; potency; PCBs; TCDD.Doctoral Thesis Yvonne Bager;

    Sammanfattning : Chemically induced carcinogenesis is a multi-stage process that can be divided into at least three major stages, initiation, promotion and progression. The promotion stage involves clonal expansion of genetically altered cells (i.e. initiated cells). LÄS MER

  4. 13. The puzzle of lichen symbiosis : Pieces from Thamnolia

    Författare :Ioana Onuț-Brännström; Hanna Johannesson; Leif Tibell; Anne Pringle; Uppsala universitet; []
    Nyckelord :Thamnolia; lichen; symbiosis; photobiont; mycobiont; phylogeography; MAT-loci; barcoding; NGS; genome; transcriptome; Ice Age; Biology with specialization in Systematics; Biologi med inriktning mot systematik;

    Sammanfattning : Symbiosis brought important evolutionary novelties to life on Earth. Lichens, the symbiotic entities formed by fungi, photosynthetic organisms and bacteria, represent an example of a successful adaptation in surviving hostile environments. Yet many aspects of the lichen symbiosis remain unexplored. LÄS MER

  5. 14. Structural Basis of Immune Receptor Binding by Staphylococcal Superantigens

    Författare :Karin Rödström; Medicinsk strukturbiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Superantigen; X-ray Crystallography; T cell receptor; Major histocompatibility complex;

    Sammanfattning : Superantigens (SAgs) are toxins capable of inducing a massive immune response, leading to severe disease. They are secreted by the bacteria Staphylococcus aureus and Streptococcus pyogenes, which produce the staphylococcal enterotoxins and streptococcal pyogenic exotoxins, respectively. LÄS MER

  7. 15. On the endemic Fucus radicans in the Baltic Sea

    Författare :Ellen Schagerström; Lena Kautsky; Inga Kjersti Sjøtun; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; seaweed; sexual reproduction; clonality; fragmentation; dimorphism; salinity; distribution; Plant Ecology; växtekologi;

    Sammanfattning : The brown macroalgae Fucus radicans is endemic to the Baltic Sea, but little is known about this newly described species. This thesis investigates the ecology and role of F. radicans within the species poor Baltic Sea ecosystem. The thallus of F. LÄS MER