Sökning: "root nodules"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden root nodules.

  1. 1. Conservation of transcription factors in infected cells of nitrogen-fixing root nodules

    Författare :Behnoosh Rashidi; Katharina Pawlowski; Karsten Niehaus; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; root nodules; actinorhiza; legumes; infection thread; Frankia; subtilase; leghemoglobin; chitinase; Plant physiology; Växtfysiologi; Plant Physiology; växtfysiologi;

    Sammanfattning : Infected cells of nitrogen-fixing root nodules are the only plant cells that can stably internally accommodate a eubacterial symbiont. In the context of studying the differentiation of infected cells, we set about to analyse the conservation of infected cell-specific transcription factors using altogether four different promoters from genes showing infected cell-specific expression, or nodule-specific expression. LÄS MER

  3. 2. Jasmonates in root nodule development

    Författare :Anna Maria Zdyb; Katharina Pawlowski; Sofie Goormachtig; Stockholms universitet; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  4. 3. The actinorhizal plant Datisca glomerata : interpreting its symbiotic adaptations by omics-based comparisons with model and non-model organisms

    Författare :Marco Salgado; Katharina Pawlowski; Daniel Lundin; Rene Geurts; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Root nodule symbiosis; nitrogen fixation; actinorhizal; Datisca glomer-ata; Frankia; nodule development; defensin; antimicrobial; carboxylate transporter; phylogenomics; transcriptomics; Plant Physiology; växtfysiologi;

    Sammanfattning : Nitrogen is the element that most often limits plant growth and development. Common agricultural practices rely on the application of large quantities of industrially-produced nitrogen fertilizer, which poses a worldwide environmental threat. Sustainable agriculture encourages the use of biologically fixed nitrogen. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

  7. 5. Endosymbiosis of Frankia cluster-2

    Författare :Fede Berckx; Katharina Pawlowski; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; root nodule endosymbiosis; Frankia; Datisca glomerata; nitrogen fixation; actinorhizal; peptidoglycan; RT-qPCR;

    Sammanfattning : Actinobacteria of the genus Frankia engage in root endosymbiosis with actinorhizal plants belonging to the Fagales, Cucurbitales and Rosales. The genus Frankia consists of four different clades. Strains belonging to cluster-1, -2, and -3 exhibit host-specificity which plants they can nodulate, while cluster-4 strains do not engage in symbiosis. LÄS MER