Search for dissertations about: "photosynthetic pigments"

Showing result 1 - 5 of 23 swedish dissertations containing the words photosynthetic pigments.

2. 1. The xanthophyll cycle, its enzymes, pigments and regulation

   Author : Marie Eskling Carlsson; Biokemi och Strukturbiologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; zeaxanthin; xanthophyll cycle; violaxanthin de-epoxidase; thylakoid; spinach; regulation; purification; pigments; photoprotection; pH dependence; ascorbate; light stress; Plant biochemistry; Växtbiokemi;

   Abstract : The xanthophyll cycle involves the light-dependent and reversible conversion of violaxanthin to zeaxanthin. Zeaxanthin has been implicated in the protection of the photosynthetic machinery from over-excitation. The enzyme violaxanthin de-epoxidase catalyses the conversion of violaxanthin to zeaxanthin. READ MORE

4. 2. Effects of warming on the ecology of algal-dominated phytobenthic communities in the Baltic Sea

   Author : Filip Svensson; Pauline Snoeijs; Johan Eklöf; Hans Kautsky; Nils Ekelund; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; climate change; warming; photosynthesis; trophic cascades; pigments; community traits; temperature gradient; invasive mussel; Marine Ecology; marin ekologi;

   Abstract : Through climate change, the global average air and surface water temperature has risen 0.85°C during the last 100 years. The Baltic Sea experienced one of the most rapid increase in temperature recorded of marine ecosystems. READ MORE

5. 3. A multivariate approach to the analysis of phytoplankton pigments

   Author : Ludvig Moberg; Olav Kvalheim; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtplankton; Analytical Chemistry; analytisk kemi;

   Abstract : Photosynthetic pigments are routinely determined in investigations of marine and freshwater environments, chlorophyll is used as an estimator of phytoplankton biomass. Photosynthetic pigments are also widely used to characterise phytoplankton taxonomic composition. READ MORE

6. 4. Energy Transfer Patterns in Photosynthetic Antenna System of Purple Bacteria

   Author : Susan Hess; Kemisk fysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; optics; Electromagnetism; mykologi; virologi; bakteriologi; photosynthesis; Mikrobiologi; Picosecond and femtosecond spectroscopy; energy transfer; purple bacteria.; Microbiology; bacteriology; mycology; virology; acoustics; Elektromagnetism; optik; akustik; Fysicumarkivet A:1997:Hess;

   Abstract : Steady state and time-resolved absorption and fluorescence spectroscopy have been used to investigated the energy transfer in photosynthetic purple bacteria. Picosecond light pulses were used in measurements of Rb. READ MORE

7. 5. How could Christmas trees remain evergreen? : photosynthetic acclimation of Scots pine and Norway spruce needles during winter

   Author : Pushan Bag; Stefan Jansson; Fransis Andre Wollman; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Scots Pine; Norway spruce; Photosynthesis; Winter adaptation; biologisk kemi; biological chemistry; biology; biologi; molekylärbiologi; Molecular Biology; Physiological Botany; fysiologisk botanik;

   Abstract : Plants and other green organisms harvest sunlight by green chlorophyll pigments and covertit to chemical energy (sugars) and oxygen in a process called photosynthesis providing the foundation for life on Earth. Although it is unanimously believed that oceanic phytoplanktons are the main contributors to the global photosynthesis, the contribution of coniferous boreal forests distributed across vast regions of the northern hemisphere cannot be undermined. READ MORE