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Showing result 1 - 5 of 7 swedish dissertations matching the above criteria.

  2. 1. Regulation of chloroplast gene expression in higher plants

    Author : Anna Furo Tullberg; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; protein tyrosine kinase; plastoquinone pool; redox; Pisum sativum; Sinapis alba; petB; psaB; chloroplast; gene expression; Physiological biophysics; Växtfysiologi; light harvesting complex II;

    Abstract : Chloroplast gene expression is regulated by developmental and environmental signals. It has been proposed that there is a direct coupling between electron transport in biological membranes and gene expression (J. F. Allen, 1992, Biochim. READ MORE

  4. 2. Oxidative stress and mitochondrial function : role of ubiquinol as antioxidant

    Author : Patrik Andrée; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Over the last three decades it has been established that biquinone (coenzyme Q), in addition to its function as an electron and proton carrier in the respiratory chain, acts in its reduced form (ubiquinol) as an antioxidant. The main theme of this thesis is a study of the antioxidant function of ubiquinol in preparations of beef heart submitochondrial particles, which consist of inverted vesicular fragments of the inner mitochondrial membrane. READ MORE

  5. 3. Phosphorylation in the thylakoid membrane - role of substrate activation

    Author : Martin Vink; Anastasios Melis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fotosyntesen; Biokemi; biokemi; Biochemistry;

    Abstract : Phosphorylation of specific side chains in target proteins by protein kinases is a major means of regulation of cellular processes. In the thylakoid membrane of higher plants, the redox-controlled phosphorylation of photosystem II (PSII) and light-harvesting complex II (LHCII) proteins regulates energy distribution between the two photosystems and PSII protein dynamics. READ MORE

  6. 4. Protein phosphorylation and proteolysis - regulation and adaptive responses in photosynthesis

    Author : Jens Forsberg; Avdelningen för molekylärmedicin och genterapi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtbiokemi; proteolysis; Plant biochemistry; protease; two-component systems; protein kinase; protein phosphorylation; state transitions; light-harvesting antenna; photosynthesis; chloroplast;

    Abstract : Just as all other organisms, plants adapt to various environmental conditions. This work focuses on the role of chloroplast light harvesting complex II, LHCII, in adaptation of photosynthesis to changed light conditions. READ MORE

  7. 5. New insights into the regulation of stomatal movements by red light, carbon dioxide and circadian rhythms

    Author : Anastasia Matrosova; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Stomata are small adjustable pores formed by pairs of guard cells that enable gas exchange between leaves and the atmosphere, thus directly affecting water loss and CO₂ uptake in plants. The current work focuses on the regulation of stomatal movements by red light, carbon dioxide and the circadian system and attempts to uncover molecular mechanisms that control guard cell function. READ MORE