Global ETD Search
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 40 for “"carbon assimilation"”.
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The Influence Of The Circadian Clock On Stomal Conductance And Carbon Assimilation In Arabidopsis thaliana
… the circadian clock on stomatal conductance and carbon assimilation and the decoupling of these processes. Timing of Cab (TOC1) and Circadian Clock Associated 1 (CCA1) genes were overexpressed and tested to investigate the impact of altered clock rhythms. Evidence showed of significant increases …
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Improved Temperature Response Functions for Modeling Photosynthetic Carbon Assimilation in the Context of Rising Carbon Dioxide
… for modeling changes in the future global carbon cycle and terrestrial biosphere. The steady-state biochemical model of C3 photosynthesis of Farquhar et al. (1980; Planta 149, 78--90) provides a basis for these larger scale predictions; but a weakness as currently parameterized has been …
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Measuring the Physiological Effects of Methylobacterium oryzae Foliar Inoculation onto Salt-Stressed Tomatoes grown in a Greenhouse Semi-Hydroponic System
… unit chlorophyll fluorescence parameters, net carbon assimilation, or fruit Brix levels but did decrease stomatal conductance and fruit yield. In Trial 1, inoculation with <em>M. oryzae</em> did not improve yield-related parameters or net carbon assimilation but increased Fv’/Fm’, decreased …
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The role of hydraulic strategies in understanding the response of fynbos to drought
… high gs (anisohydric), thereby maintaining carbon assimilation albeit at the cost of hydraulic dysfunction. However, currently, the importance of the hydraulic framework in explaining drought response in diverse communities is poorly understood. Drought-related plant mortality is of …
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Annual secondary production of fungal and bacterial decomposers associated with standing and benthic litter of the freshwater emergent macrophyte, <i>typha angustifolia </i>
… production investigations are lacking. Microbial carbon assimilation into biomass and CO<sub>2</sub> mineralization may contribute considerably to wetland biogeochemical cycling and energy flow. Naturally-occurring <em>Typha angustifolia</em> detritus was collected to determine annual areal carbon …
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Developmental and physiological responses of soybean to elevated growing temperatures
… of multiple mechanisms including reduced net carbon assimilation and altered development. Observation of yield and traits directly affected by heat stress under high growing temperatures is a crucial step in the development of crop models able to estimate yields under future warming scenarios. …
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A comparative analysis of C3 and C4 photosynthesis under dynamic light conditions
… can amount to up to a 40% loss in daily carbon assimilation. Although remarkable progress has been made, the vast majority of the work on dynamic light photosynthesis has been conducted in C3 species, despite the undeniable global importance of C4 crops to global food supplies. The …
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Mechanistic studies of electron transfer, complex formation, C-H bond activation, and product binding in soluble methane monooxygenase
… to afford methanol and water, the first step of carbon assimilation in methanotrophic bacteria. This enzyme comprises three protein components: a hydroxylase (MMOH) that contains a dinuclear non-heme iron active site, a reductase (MMOR) that facilitates electron transfer from NADH to the diiron …
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Synthetic Biology for Autotrophic and Heterotrophic Production of Ethanol
… (RubisCO) is responsible for the majority of carbon assimilation on Earth, RubisCO has poor specificity between CO<sub>2</sub> and O<sub>2</sub> which can lead to photorespiration and ultimately the loss of fixed carbon and nitrogen. The 3-hydroxypropionate (3-HPA) bypass was introduced into …
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Investigating the Role of RAP2.12 and GAPDH in Photosynthetic CO2 Fixation to Improve Drought Tolerance
… involved in the regulation of photosynthetic carbon assimilation. Three highly connected genes were identified as being important in influencing drought-induced transcriptional responses of the genes that encode for enzymes of the Calvin cycle. These genes are the drought-inducible …
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Ecophysiological responses of Themeda triandra Forsk. and other Southern African Câ‚„ grass species to increases in atmospheric COâ‚‚ concentrations
… the potential effects of rising atmospheric carbon dioxide (C02) concentrations on southern African C4 grass species, with respect to carbon assimilation and allocation, growth, and morphological development. Altered CO2-responsiveness with simultaneous exposure to other environmental …
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Improving C4 photosynthetic chilling tolerance in bioenergy crops: the search for elite breeding materials
… period, and maintained higher net rate of carbon assimilation and quantum yield of photosystem II over the chilling period and on return to moderate temperature, while Miscanthus x giganteus maintained the highest rates of leaf elongation throughout the chilling treatment. Additionally, all …
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The effect of timing of growing season drought on flowering of Andropogon gerardii
… different times via different mechanisms (e.g. carbon gain via rapid growth early in the growing season vs. direct effects on stalk elongation later in the growing season). In order to test the differential effects of precipitation timing, rainfall deficits (100% exclusion) at different periods …
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Regulation of Metabolism in Mycobacteria and Cyanobacteria
… VapBC systems appear to target genes involved in carbon assimilation and metabolism via both photosynthetic and heterotrophic processes. Interestingly, VapBCslr1209/1210 targets an operon involved in glucose transport, which is also the cellular process targeted by the only other well …
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Physiological Bases and a Novel Genetic Determinant of Water-Use Efficiency (WUE)
… YK is partially attributable to more efficient carbon assimilation into biomass, and reduced carbon anabolism. YK accumulates higher concentrations of free fatty acids and long-chain fatty acid derivatives than SH; whereas starch and sugars are more abundant in SH. The new and previously …
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Damage-Induced Spatial Heterogeneity of Photosynthesis: Mechanisms and Analysis
… from soybean leaflets without affecting carbon assimilation rates or photosynthetic efficiency (phiPSII). The depression of phiPSII caused by fungal infections and galls on hardwood tree saplings extended > 2.5 times further from the visible damage and was ∼40% larger than for chewing …
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Development of high-throughput phenotyping methods and evaluation of morphological and physiological characteristics of peanut in a sub-humid environment
… identified CC650 less wilted and with increased carbon assimilation, electron transport, quantum efficiency, and yield than other accessions.
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Predicting the yield and water-use of poplar short rotation coppice under a future climate
… did not impact on the accuracy of the simulated carbon assimilation,<br/>because the value of Vmax used in the model compensated for the presence/absence of this<br/>pathway. It was concluded that, given the model’s high sensitivity to Vmax, it is essential to<br/>calibrate the model with a …
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