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 26 for “"flavonoid biosynthesis"”.
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Immunomodulation of Flavonoid Biosynthesis in Transgenic Arabidopsis thaliana
… Arabidopsis chalcone isomerase (CHI) of the flavonoid biosynthetic pathway as the antigen. Each of the genes encoding the scFv's was cloned into a plant transformation vector, which was subsequently used to generate transgenic plants. One transgenic line with low expression of one of the …
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Enzyme structure, function, and evolution in flavonoid biosynthesis
… spread throughout terrestrial environments. Flavonoids are one particularly important class of plant specialized metabolites, playing a wide variety of roles in plant physiology including UV protection, pigmentation, and defense against herbivores and pathogens. Flavonoid diversity has …
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Macromolecular organization of flavonoid biosynthesis in Arabidopsis thaliana
… the first step in a pathway that competes with flavonoid biosynthesis in other plant species. Moreover, it was shown that flavonols are not required for pollen viability in A. thaliana as they are in maize and petunia. I also describe a novel method to clone fragments of DNA without ligase using …
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Probing Plant Metabolism: The Machineries of [Fe-S] Cluster Assembly and Flavonoid Biosynthesis
… an enzyme that is part of the well-characterized flavonoid biosynthetic pathway. These two distinct pathways serve as unique models for genetic and biochemical studies that contribute to our overall understanding of plant metabolism.
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Molecular and Biochemical Genetics of 2-Oxoglutarate-Dependent Dioxygenases Required for Flavonoid Biosynthesis in Arabidopsis thaliana
… dioxygenases required for flavonoid biosynthesis were characterized in Arabidopsis thaliana. Genes encoding flavanone 3-hydroxylase (F3H), flavonol synthase (FLS), and leucoanthocyanidin dioxygenase (LDOX) were cloned and sequenced. The predicted proteins encoded by each of …
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Molecular Genetics and Subcellular Localization of Flavonoid Metabolism in Arabidopsis
… here was to test the metabolon model using the flavonoid biosynthetic pathway in Arabidopsis, which has been hypothesized to exist as a metabolic enzyme complex. Five novel mutants of the gene encoding the first enzyme of flavonoid biosynthesis, chalcone synthase (CHS), were characterized in an …
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Genetic effects of prolonged UV-B exposure in a Namaqualand daisy - Dimorphotheca sinuata
… of photosynthetic genes and an up-regulation of flavonoid biosynthesis.
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Flavonoid diversification in Hibiscus and its impact on petal pattern evolution
… model system, bullseye patterns are formed by flavonoid pigments including anthocyanins and flavonols. Their flowers display a contrast between a purple base and an off-white distal region. H. trionum belongs to the Trionum Complex native to Australia and New Zealand, whose members vary in …
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Structural Characterization of the Flavonoid Enzyme Complex
Flavonoid biosynthesis is an important secondary metabolic pathway in higher plants with a range of vital functions in plants and animals. This pathway has been developed as a model system for the study of multi-enzyme complexes. The goal of the work presented here was to structurally characterize …
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Potato genomics three ways: quantification of endoreduplication in tubers, a romp through the transposon terrain, and elucidation of flower color regulation
… AN2, while showing the effects it exerts on the flavonoid biosynthesis and fruit ripening pathways. This region was shown to be particularly dynamic, replete with MITEs and structural variants which we hypothesize to be the ultimate cause of differences in AN2 expression within the germplasm we …
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Untersuchungen zur Regulation der Flavonoidbiosynthese im Kulturapfel Malus x domestica
In contrast to many other plants where biosynthesis of flavonoids and regulation of the involved genes is well analyzed, only little is known in the cultured apple M. x domestica about this pathway. Although most important intermediates and their structural genes are identified, regulation and the …
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Early land plant origins of the MYB-bHLH-WDR complex
… or MBW complexes) regulate patterns of flavonoid pigments, trichomes and root hairs in this cell layer. We reasoned that investigating the origins and diversification of the MBW complexes may give insights into the origins of these cell types. Phylogenetic analysis and interrogation of …
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Functional analysis of MYB112 transcription factor in the model plant Arabidopsis thaliana
… exerts a major role in regulation of plant flavonoid metabolism. We report enhanced and impaired anthocyanin accumulation in MYB112 overexpressors and MYB112-deficient mutants, respectively. Expression profiling reveals that MYB112 acts as a positive regulator of the transcription factor …
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QTL discovery for Japanese beetle resistance in aphid-resistant germplasm, stacking aphid-resistant genes, and metabolite profiling studies in soybean
… for resistant QTL found key enzymes involved in flavonoid biosynthesis pathway, thus a comprehensive flavonoid profiling study was conducted using High Performance Liquid Chromatography/tandem Mass Spectrometry (HPLC/MS/MS) on three susceptible and three resistant lines. 32 distinct peaks …
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Organ-specific regulation and molecular evolution of the maize pericarp color1 gene
… Myb-like transcription factor that regulates the flavonoid biosynthetic pathway in floral organs, most notably kernel pericarp and cob. Alleles of the p1 gene condition distinct tissue-specific pigmentation patterns. To elucidate the molecular basis of these allele-specific expression patterns, we …
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Phytochemical diversity and genetics of purple corn
… genotyping-by-sequencing, and phenotyped for flavonoid content using HPLC. GWAS (genome-wide association studies) revealed several candidate genes associated with anthocyanin concentration and type as well as flux through the flavonoid pathway. Of interest were candidates found for an …
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Characterisation of Flavonoid Composition and Glycosylating Enzymes in Sweet Cherry and Apple Fruit
… anti-inflammatory properties. Among polyphenols, flavonoids, the most abundant subset of polyphenolic compounds, have garnered significant scientific attention in recent years, owing to their structural diversity and various health-promoting properties. An increase in the demand for functional …
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Is Alnus viridis 'a' glacial relict in the Black Forest ?
… related to the changed habitat conditions. Flavonoid induction in the hypocotyl is under control of short-wavelength light. The most important photoreceptor seems to be the UV-B receptor, whose action is complemented by UV-A/BL receptor(s). Phytochromes are not involved. A similar result is …
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