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.
Results
Showing 1 to 17 of 17 for “"light responses"”.
-
Biochemical Genetic Analysis of Blue Light Responses in Neurospora Crassa
Physiological responses to blue light are widespread among prokaryotic and eukaryotic organisms. The photoreceptor for some of these responses, long a matter of controversy, may be a flavin or carotenoid. This dissertation applies a biochemical genetic approach to an analysis of the blue light …
-
Towards unveiling the Photoactive Yellow Proteins: characterization of a halophilic member and a proteomic approach to study light responses
The family of blue-light absorbing Photoactive Yellow Proteins (PYPs) has become an attractive model system to study the molecular events related to light perception. PYP covalently binds a p-hydroxycinnamic acid chromophore, which is fine-tuned for efficient light absorption and initiates a …
-
Characterization of the Role of R7-RGS Proteins in Mammalian Retina and Vision
… of phototransduction and ON bipolar cell light responses in the outer retina. While R7-RGS proteins are expressed throughout the inner retina, their function there is unknown. The goal of this dissertation project is to characterize R7-RGS regulation on retina function and …
-
Regulation of the stomatal response to red light
Regulation of the stomatal response to red light Stomata are microscopic pores in the leaf epidermis which govern the exchange of CO2 and water vapour between the plant and surrounding atmosphere. Highly specialised guard cells surround each stomatal pore and regulate stomatal aperture in response …
-
Noninvasive optical inhibition with a red-shifted microbial rhodopsin
… wavelengths, all of which suffer substantial light power attenuation as a result of tissue and hemoglobin optical absorption. In this thesis, I describe the discovery, engineering, and implementation of a new red-shifted cruxhalorhodopsin, Jaws, derived from Haloarcula salinarum (strain …
-
Influences of elevated atmospheric CO₂ and water stress on photosynthesis and fluorescence of loblolly pine, red maple, and sweetgum
Changes in light harvesting ability and other physiological responses could int1uence the competitive outcomes of tree species in a future elevated CO₂ atmosphere. Photosynthetic light response curves were constructed with a closed photosynthesis system (LI-COR, Inc. Lincoln, NB) in order to …
-
THE EVANGELICAL NEW LIGHT CLERGY OF NORTHERN NEW ENGLAND, 1741-1755: A TYPOLOGY (GREAT AWAKENING, MAINE, NEW HAMPSHIRE, REVIVAL)
… corrects the prevailing treatment of New Lights, who emerged during the Great Awakening, as if they were of a monolithic "mind." It counters the oversimplified labeling of mid eighteenth-century evangelicals with a typology that establishes subtle gradations of New Light piety according to …
-
Role of Striatin Complexes in the Control of Development and Secondary Metabolism of the Filamentous Fungus Aspergillus nidulans
… control of the environmental signals such as light, CO2 and pH . Aspergillus nidulans is a model for eukaryotic systems as well as fungal development and SM. It produces more than forty identified compounds with potent biological activities. Function of the striatin gene, strA was previously …
-
Histone modifications and the Arabidopsis thaliana circadian clock
… are circadianly regulated have been shown to be light responsive or involved in light responses. Rhythmic histone acetylation has been demonstrated in the promoter of TIMING OF CAB EXPRESSION1 (TOC1). Here, I used semi-quantitative Reverse Transcriptase Polymerase Chain Reaction …
-
Nuclear proteomics and transcription factor profiling in Chlamydomonas reinhardtii
… to different environmental stimuli. In some responses, diverse signaling pathways can be controlled simultaneously. One of the most important cellular processes that seem to possess multiple levels of regulation is photosynthesis. A model organism for studying photosynthesis-related processes …
-
Influence of retinal states on the development and maintenance of retinofugal projections
… remodeling. However, the magnitude of pupillary light responses in PD mice was diminished. Reduced melanopsin signal in the retina, not downstream anomalies, explains this functional deficiency. These observations suggest that changes to eye-specific segregation are limited once projections are …
-
Estudio del origen genético de la variedad de vid Garnacha Blanca, de su diversidad fenotípica y de los efectos moleculares asociados a la variación en el color de la uva
… with the transcriptional activation of light responses in white berries. These responses associate with important changes in the berry composition and may contribute to floral, white fruit and herbaceous aromatic character, typical of white wines. Altogether, the results contribute to a …
-
Understanding and engineering photoresponses in Arabidopsis thaliana
Light is a remarkably versatile and precise tool, the prevalent nature of which has caused it to become a common stimulus in biological processes. Along with metabolic signals derived from photosynthesis, plants have evolved a suite of five known families of photoreceptor proteins which make up …
-
THE ROLE OF R7 REGULATORS OF G PROTEIN SIGNALING IN THE RETINA
… the mGluR6/Gαo/TRPM1 pathway, which mediates DBC light responses. The exact role of RGS7 in DBCs has not been unequivocally determined. We have contributed by making a true RGS7 null mouse line and found the RGS7-/- mice are viable and fertile, but have a small body size. Electroretinogram (ERG) …
-
Evolutionary and functional analysis of transcription factors controlling leaf development
… can be divided into two different processes: one light dependent, related to photosynthesis and light responses; and one light independent or impaired, related to the changes in the vascular tissue that occur when leaves change from an import to an export mode. Furthermore, starch, but not …
-
UV-resistance locus 8 and UV-B specific signaling in Arabidopsis thaliana
UV-B is a natural component of the sunlight spectrum. As a result of the potentially harmful effects of this radiation, plants have evolved a highly effective suit of protective and repair mechanisms. However, the signalling pathways that control such responses are not yet well known. For example …