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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 763 for “"Photosynthesis"”.
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Conceptual understanding of photosynthesis
… rate in Biology, particularly under the topic “Photosynthesis”. Photosynthesis is a biological process which is critical for producing food for all living organisms. A test was used as a tool for collecting data. The test consisted of six questions taken from previous grade twelve final …
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Stomatal regulation in C4 photosynthesis
… into organic molecules through the process of photosynthesis. The exchange of gases between the atmosphere and the leaf intercellular spaces is facilitated by stomata, tiny pores found on the leaf epidermis. These pores act as gateways, allowing CO<sub>2</sub> to enter the leaf while water …
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Understanding C4 Photosynthesis Through Quantitative Genetics
Photosynthesis is fundamental to all life on Earth. In terrestrial plants it relies exclusively on RuBisCO to fix atmospheric CO2 into the sugar-generating Calvin-Benson-Bassham cycle. RuBisCO however, binds with oxygen preferentially under favourable conditions which has led to the evolution of …
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Photosynthesis and nutrition in In Vitro plants
… primarily a result of endproduct inhibition of photosynthesis by accumulated leaf carbohydrate, and results in plants being extremely sensitive to photoinhibition. Manipulation of carbohydrate in the growth medium and growth irradiance may result in increased photosynthetic capability of plants …
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Electron Transport in Photosynthesis: Proteins and Pathways
Synechocystis 6803 cytochrome cM were purified and its physical and structural characteristics investigated. Highly purified cytochrome cM was obtained in oligomeric forms. Our spectroscopy data indicate that the 6th axial ligand for cytochrome cM is not likely to be Met residue.
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Primary Photoprocesses in the Photosynthesis of Algae
Made available in DSpace on 2014-12-11T00:00:13Z (GMT). No. of bitstreams: 1 7206993.pdf: 6253219 bytes, checksum: 363768ca0087af30397ba59ed027a5d0 (MD5) Previous issue date: 1971
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Towards Artificial Photosynthesis: Yeast-Inorganic Hybrid System
… properties with the light-dependent reactions of photosynthesis. That is, upon light activation of the cadmium sulfide nanoparticles, favorable electron transfers fill resulting electron holes that alter the redox state of the yeast, creating metabolic conditions that promote reduced product …
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Photosynthesis-inspired device architectures for organic photovoltaics
… two new device architectures inspired by photosynthesis that aim to overcome these two challenges. First, we overcome the trade-off between light absorption and exciton diffusion by introducing an external light absorbing antenna layer. We model energy transfer from the antenna to the …
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Improving the thermal tolerance of photosynthesis in wheat
… temperatures needs to be improved. Inhibition of photosynthesis under sub-optimal environmental conditions decreases carbon fixation, reducing crop yields. Heat stress inhibits photosynthesis, in part due to a decrease in the activation state of Rubisco. Rubisco activase (Rca) is required to …
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Variation in Photosynthesis and Its Consequences for Fitness
… from comparative studies, linkages between photosynthesis, growth, and reproduction have remained poorly understood. I have shown that photosynthesis contributes fitness, through relatively small effects on growth throughout development. This indirect selection may be a primary mechanism …
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Photosynthesis and Photorespiration in Isolated Soybean Leaf Cells
Made available in DSpace on 2015-05-14T15:09:57Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7616192.PDF: 6320900 bytes, checksum: 92c4e943876e86334813eaba476a39be (MD5) Previous issue date: 1976
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Photosynthesis Inhibition in the Arabidopsis Thaliana Photorespiration Mutants
The inhibition of photosynthesis occurring in the Arabidopsis photorespiration mutants during illumination under atmospheres which promote photorespiration is predominantly due to declining leaf RuBP concentrations resulting from the impairment of carbon recycling to the Calvin cycle.
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Genotypic and Environmental Effects on Soybean Canopy Photosynthesis
Three studies were conducted to identify environmental and genetic factors controlling soybean (Glycine max (L.) Merr.) canopy photosynthetic CO$\sb2$-exchange rates (CER) using automatic mobile transparent chambers. In the first study, CER from chlorophyll-deficient, near-isogenic lines were …
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The role of small RNAs in C4 photosynthesis
… alignment. In C. gynandra plants expressing p19 photosynthesis was compromised and transcripts of several genes (most notably RbcS and RCA) were upregulated. These data were complemented by examining the effect of illumination on developing C. gynandra cotyledons, and attempts to generate a …
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Investigating the photosynthesis of Symbiodinium in Caribbean gorgonian corals
Symbiodinium photosynthesis fuels the growth of an array of marine invertebrates, including scleractinian corals and octocorals. Studies examining the symbiosis between Caribbean octocorals and Symbiodinium are sparse, even though octocorals blanket the landscape of Caribbean coral reefs. Here, I …
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Damage-Induced Spatial Heterogeneity of Photosynthesis: Mechanisms and Analysis
… caused by biotic agents may indirectly influence photosynthesis in areas not directly injured, and these indirect depressions of photosynthesis may sometimes be greater than those associated with tissue directly damaged. I investigated the indirect effects of herbivore and pathogen damage in …
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Gene Expression in Rhodopseudomonas Sphaeroides (Photosynthesis, Carboxylase, Membrane Biosynthesis
A DNA-directed coupled transcription-translation system has been developed in cell-free extracts from the facultative phototroph, Rhodopseudomonas sphaeroides. The in vitro protein synthesizing system was active when prepared from either aerobically or anaerobically grown cells. Optimal activity …
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