Search for dissertations about: "rhizobia"

Showing result 1 - 5 of 6 swedish dissertations containing the word rhizobia.

  2. 1. Jasmonates in root nodule development

    Author : Anna Maria Zdyb; Katharina Pawlowski; Sofie Goormachtig; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lotus japonicus; jasmonic acid; actinorhizal; rhizobia; Frankia; root nodule; lipoxygenase; allene oxide cyclase; allene oxide synthase; Casuarina; Datisca; Medicago; Plant physiology; Växtfysiologi; växtfysiologi; Plant Physiology;

    Abstract : Jasmonic acid (JA), its derivatives and its precursor form a group of phytohormones, the jasmonates, representing signal molecules involved in plant stress responses, in the defense against pathogens as well as in development. Elevated levels of JA have been shown to play a role in arbuscular mycorrhiza and in the induction of nitrogen-fixing root nodules. READ MORE

  4. 2. The actinorhizal symbiosis of Datisca glomerata: Search for nodule-specific marker genes

    Author : Irina V. Demina; Katharina Pawlowski; Franziska Krajinski; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; actinorhizal symbiosis; Datisca glomerata; nodule transcriptome; nodule-specific marker genes; cysteine-rich peptides; auxins and cytokinins; Plant Physiology; växtfysiologi;

    Abstract : The actinorhizal symbiosis is entered by nitrogen-fixing actinobacteria of the genus Frankia and a large group of woody plant species distributed among eight dicot families. The actinorhizal symbiosis, as well as the legume-rhizobia symbiosis, involves the stable intracellular accommodation of the microsymbionts in special organs called root nodules. READ MORE

  5. 3. Signalling between plants and microorganisms

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

    Abstract : 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. READ MORE

  6. 4. To be together or not to be together : Ca. 100 million years of evolutionary history of the earliest divergent Frankia clade

    Author : Fede Berckx; Katharina Pawlowski; Barbara Reinhold-Hurek; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; root nodule symbiosis; Frankia; actinorhizal symbiosis; växtfysiologi; Plant Physiology;

    Abstract : Root nodule symbiosis evolved ca. 100 Mya between a nitrogen-fixing bacterium and the common ancestor to the Fabales, Fagales, Rosales, and Cucurbitales plant orders. Over time the majority of the lineages derived from this ancestor lost their symbiotic capability. READ MORE

  7. 5. Molecular mechanisms in actinorhizal symbioses

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

    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