Sökning: "photosynthesis"

Visar resultat 21 - 25 av 292 avhandlingar innehållade ordet photosynthesis.

  1. 21. A green future with thawing permafrost mires? : a study of climate-vegetation interactions in European subarctic peatlands

    Författare :Julia Bosiö; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fennoscandia; carbon; greenhouse gas; photosynthesis; PAR; snow; climate change; permafrost; peatland; subarctic;

    Sammanfattning : Climate projections indicate that Arctic and sub-Arctic regions are facing a significant change in climate during the 21st century. With warmer temperatures precipitation is also expected to increase, and in particular winter precipitation. LÄS MER

  3. 22. Ultrafast Structural Changes in a Bacterial Photosynthetic Reaction Center probed with XFEL Radiation

    Författare :Robert Dods; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photosynthesis; Reaction Center; Time-resolved crystallography; XFEL; membrane protein;

    Sammanfattning : Photosynthesis is the process by which plants and many species of bacteria convert energy from sunlight into chemical energy used to power their metabolism. As these plants and bacteria are eaten, the chemical energy moves up the food chain and thus photosynthesis provides fuel for almost all life on Earth. LÄS MER

  4. 23. Stress responses of Arabidopsis plants with a varying level of non-photochemical quenching

    Författare :Hanna Johansson Jänkänpää; Stefan Jansson; Barbara Demmig-Adams; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis; NPQ; PsbS; photosynthesis; field experiment; metabolomics; Physiological Botany; fysiologisk botanik; molekylärbiologi; Molecular Biology;

    Sammanfattning : When light energy input exceeds the capacity for photosynthesis the plant need to dissipate the excess energy and this is done through non-photo-chemical quenching (NPQ). Photochemical quenching (photosynthesis), NPQ and fluorescence are three alternative faiths of excited chlorophylls. PsbS associates to photosystem II and is involved in NPQ. LÄS MER

  5. 24. The Small Cab-like Proteins in the cyanobacterium Synechocystis sp. PCC 6803

    Författare :Miguel Angel Hernández-Prieto; Christiane Funk; Conrad Mullineaux; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Photosynthesis; Photosystem II; chlorophyll-binding proteins; tetrapyrrole biosynthesis; photodamage; non-photochemical quenching; SCPs; LHCII; Biochemistry; Biokemi; Plant physiology; Växtfysiologi; biokemi; Biochemistry;

    Sammanfattning : The Small Cab-like Proteins (SCPs) in the cyanobacterium Synechocystis sp. PCC 6803 accumulate in cells grown under different stress conditions. Genes coding for SCPs have been found in all sequenced organisms performing oxygenic photosynthesis and even in the genomes of cyanophages. LÄS MER

  7. 25. Ecophysiological responses of Baltic and Atlantic Fucus vesiculosus to environmental factors

    Författare :Charlotta A Nygård; Nils Ekelund; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; acclimation; Atlantic; Baltic Sea; Bothnian Sea; Cd; Fucus vesiculosus; growth; high PAR; Pb; photosynthesis; salinity; stress; UV-B; Biology; Biologi;

    Sammanfattning : The Baltic Sea is a species-poor ecosystem where marine species coexist with freshwater species. The Baltic Sea offers low salinity, low content of inorganic carbon, long cold winters and no tides. LÄS MER