Search for dissertations about: "PsbS"

Found 4 swedish dissertations containing the word PsbS.

2. 1. Stress responses of Arabidopsis plants with a varying level of non-photochemical quenching

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

   Abstract : 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. READ MORE

4. 2. The significance of feedback de-excitation

   Author : Carsten Külheim; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis thaliana; photosynthesis; feedback de-excitation; fitness; metabolomics; transcriptomics; Plant physiology; Växtfysiologi;

   Abstract : During photosynthesis sunlight is absorbed by photosynthetic pigments and converted into organic compounds, such as carbohydrates. Photosynthesis needs to be highly regulated, since both too much and too little light are harmful to plant. READ MORE

5. 3. On the lateral organisation of the thylakoid membrane

   Author : Ravi Danielsson; Biokemi och Strukturbiologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Thylakoid membrane heterogeneity; Plant biochemistry; Växtbiokemi; Thylakoid structure; Phase partition; Thylakoid fractions;

   Abstract : In this work the lateral heterogeneity of the thylakoid membrane was investigated by quantifying the amount of photosystem I (PSI), photosystem II (PSII) and some PSII complexes and PSII proteins in different domains of the thylakoid. Grana, grana core, grana margins and stroma lamellae + end fractions were obtained by sonication and separation in a non-detergent, aqueous polymer two-phase system. READ MORE

6. 4. Dissecting the photosystem II light-harvesting antenna

   Author : Jenny Andersson; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plant physiology; antisense; Arabidopsis thaliana; chlorophyll; carotenoid; feedback de-excitation; fitness; LHC; NPQ; photosynthesis; state transitions; xanthophyll; Växtfysiologi; Plant physiology; Växtfysiologi; Physiological Botany; fysiologisk botanik;

   Abstract : In photosynthesis, sunlight is converted into chemical energy that is stored mainly as carbohydrates and supplies basically all life on Earth with energy.In order to efficiently absorb the light energy, plants have developed the outer light harvesting antenna, which is composed of ten different protein subunits (LHC) that bind chlorophyll a and b as well as different carotenoids. READ MORE