Search for dissertations about: "SYMBIOSES"

Showing result 1 - 5 of 20 swedish dissertations containing the word SYMBIOSES.

  1. 1. Molecular mechanisms in actinorhizal symbioses

    Author : Tomas Persson; Katharina Pawlowski; Helge Küster; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; växtfysiologi; Plant Physiology;

    Abstract : The symbiosis between the nitrogen fixing acinobacterium Frankia and its actinorhizal host plant is very old and their co-evolution has shaped their niche in the environment. Nitrogen is most often the limiting element in soil, and symbiotic plants can, with the help of their micrsymbionts, compete in an efficient way. READ MORE

  2. 2. Specificity in natural and artificial cyanobacterial symbioses

    Author : Malin Nilsson; Kristina Lindström; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Plant physiology; Växtfysiologi; växtfysiologi; Plant Physiology;

    Abstract : Cyanobacteria, primarily of the genus Nostoc, form symbioses with a wide variety of plants. The diversity of cyanobacterial strains in these symbioses, and the specificity of interaction, vary greatly. A high diversity at the strain level has been suggested for bryophytes and cycads, whereas a low diversity is found in lichens. READ MORE

  3. 3. Differentiation of infected cells in root nodule symbioses

    Author : Irina Demina; Katharina Pawlowski; Ganeteg Ulrika; Stockholms universitet; []
    Keywords : Plant Physiology; växtfysiologi;

    Abstract : .... READ MORE

  4. 4. Molecular communication and responses in Nostoc - plant symbioses

    Author : Anton Liaimer; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Molekylärbiologi; Cyanobakterier; Växtfysiologi;

    Abstract : .... READ MORE

  5. 5. Phylogeny, diversity and toxin production related to cyanobacterial symbioses

    Author : Dimitra Papaefthimiou; Ulla Rasmussen; Kaarina Sivonen; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Azolla; BMAA; cyanobacteria; cyanobionts; cyanolichens; diversity; HPLC; Nostoc; phylogeny; symbiosis; Plant physiology; Växtfysiologi; växtfysiologi; Plant Physiology;

    Abstract : Phylogeny and morphology were examined for the cyanobionts from the water fern Azolla and the cyanobacterial genus Nostoc originating from symbioses with different host plants (genera Gunnera, Cycas, Dioon, Encephalarthos, Macrozamia, and Anthoceros), the lichen genus Pannaria, and free-living Nostoc isolates from different habitats. Nostoc isolates of Pannaria formed a closely related group, but, in general, no monophyletic nature was attributed to the genus Nostoc, in contrast to the cyanobionts from Azolla which were contained in a unique monophyletic group. READ MORE