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 20 of 31 for “"plant secondary metabolites"”.
-
Nematicidal, antimicrobial and acaricidal activity of plant secondary metabolites
… of new active compounds derived from plants. In this PhD thesis we report for the first time about the use of Ailanthus altissima, Capparis spinosa, Melia azedarach and Armoracia rusticana and their secondary metabolites such as α, β- and α, β, γ, δ- unsaturated aldehydes, …
-
PLANT SECONDARY METABOLITES AS A STRATEGY TO REDUCE METHANE EMISSIONS AND IMPROVE FEED EFFICIENCY IN RUMINANTS
… All experiments aimed to evaluate different plant secondary metabolites (PSM), included in ruminant diets, in order to reduce rumen methanogenesis. 1 - In the first paper, originated from the ECOCO2W project, eight PSM (gallic and salicylic acids, tannic acid, catechin, epicatechin, …
-
Diel patterns of insect herbivory and plant secondary metabolites in understory shrubs on Barro Colorado Island
Plants produce a broad diversity of secondary metabolites as defenses against herbivory. In response, herbivorous insects have evolved a diversity of behavioral and biochemical counter-adaptations to these defenses. Despite that a significant portion of leaf area removal by insects in the tropics …
-
Plant secondary metabolites enhance survival and pathogen tolerance in the European honey bee: a structure-function study
… habitat loss often lead to dietary deficiencies. Plant secondary metabolites are key constituents of floral nectar that support physiological processes in honey bees, however, these compounds are only available to bees with access to a diversity of floral resources. Furthermore, the relationship …
-
Engineering a novel pathway for isoprenoid synthesis
… their diverse properties. Most isoprenoids are plant secondary metabolites and are of commercial importance due to their varied applications in fields spanning medicine, agriculture, flavors, fragrances, cosmetics and nutrition. Biological production of isoprenoids in microbes is considered to …
-
Expression and Biochemical Function of Putative Flavonoid GT Clones from Grapefruit and Identification of New Clones using the harvEST Database.
<p>Flavonoids are plant secondary metabolites well known for many key roles in the life cycle of plants. They also can affect human health. <em>Citrus paradisi</em> is known to produce several glucosylated flavonoids and these compounds are glucosylated by enzymes known as glucosyltransferases …
-
Expression and Characterization of Putative Plant Secondary Product Glucosyltransferase Clone 10 from <em>Citrus paradisi</em> and Resolution of Multiple Bands in PGT5/6.
<p>Flavonoids are a class of plant secondary metabolites that fulfill many functions <em>in planta</em> and also benefit human health. Glucosylation of flavonoids, catalyzed by glucosyltransferases (GTs), help flavonoids perform their important roles. <em>Citrus paradisi</em> (grapefruit) is known …
-
Inhibition of <em>Escherichia coli</em> ATP Synthase Using Bioflavonoids.
… several inhibitors. Bioflavonoids are a class of plant secondary metabolites known to exhibit antioxidants, chemopreventive, and chemotherapeutic properties. Their actual mode of action is not clear; however, some bioflavonoid are known to block the action of enzymes and other substances that …
-
Cloning, Heterologous Expression in Yeast, and Biochemical Characterization of Recombinant Putative Glucosyltransferase Clones 9 and 11 from Grapefruit (Citrus paradisi)
<p>Flavonoids are plant secondary metabolites that play diverse roles in plants and human health. These compounds in most part exist in the glucosylated form. Grapefruit accumulates high levels of glucosylated flavonoids. Plant secondary product glucosyltransferases (GTs) catalyze the glucosylation …
-
cDNA Cloning, Expression and Characterization of a Putative Glucosyltransferase (GT) from Grapefruit (<em>Citrus paradisi</em>) Leaves.
<p>Flavonoids are plant secondary metabolites that are integral to our lives. Grapefruits are well-known for production of unique glucosylated products and the enzymes responsible are UDP-glucose:glucosyltransferases (GTs). The objective of this research was to obtain full-length clones of putative …
-
Phytochemistry in the development of pesticides and biocides
… and extracts for soil amendment as well as plant secondary metabolites isolated from the afore mentioned matrixes and used individually or in binary mixtures to create synergism. The effects of the treatment compound/s are evaluated in various growth stages of the parasite, considering …
-
Intestinal absorption and bioavailability of coffee phenolics and green tea polyphenols: a study in healthy and ileostomy volunteers
… are phytochemicals, thought to participate in plant development and defence mechanisms. Polyphenols are ubiquitous plant secondary metabolites, and are usually found conjugated as glycosides or esters. These compounds have been of particular interest as part of the human diet, and have been the …
-
An Evaluation of the Medicinal Plants of Andros Island, Bahamas
<p>The earliest civilizations have been using plants as their foundation for healing and medicinal traditions for thousands of years. The use of plant medicinals, more commonly known as “bush medicine” on Andros Island, has been rapidly decreasing due an increased presence of western medicine and …
-
Understanding the complex relationships between climate, vegetation, and foraging behavior of a climate-sensitive alpine mammal in order to explain patterns of persistence
… impacts on mountain mammals. Certain aspects of plant community composition and structure can function as predictors of pika distribution, but understanding the links between climate, forage quality, and foraging behavior is necessary to identify the mediating mechanism. Pika foraging pressure …
-
Testing the forage preference of the American pika (Ochotona princeps) for use in connectivity corridors in the Washington Cascades
… populations avoid declines and extirpations, so planting suitable forage within and adjacent to the crossings will be essential. During the summer and fall of 2015, we completed 70 cafeteria-style preference experiments using 10 forage species that were common in pika-occupied habitats. In these …
-
Engineering of polyphenol metabolism in tomatoes to enhance anti-cancer activities
Anthocyanins are polyphenolic plant pigments that are responsible for much of the attractive colour displays found in many flowers, fruit and vegetables. Anthocyanins are divided into different classes based on the number of hydroxyl groups on their phenyl B-ring and subsequent side chain …
-
Characterization of the Arabidopsis glutamine dumper1 mutant reveals connections between amino acid homeostasis and plant stress responses
… major organic form of transported nitrogen in plants, elements for protein synthesis, and precursors of many plant secondary metabolites, such as lignin, hormones, and flavonoids. Furthermore, amino acid metabolism lies at the crossroad of carbon and nitrogen metabolism. The Arabidopsis …
-
Differential detoxification strategies in closely related herbivore species across a sharp ecotone
… the toxicity that they encounter in their diets. Plants produce toxic phytochemicals to ward off herbivores, while herbivores have evolved methods of detoxifying these chemicals. One such method is the use of cytochrome P450 enzymes (CYPs), many of which are found in the liver. While there has …
-
Hormetic dietary phytochemicals from Western Canadian plants: Identification, characterization and mechanistic insights
… of mammalian stress responsive pathways by plant secondary metabolites may contribute to the protection against certain chronic diseases afforded by fruit and vegetable consumption. This work focuses on the identification of plant compounds that activate the stress-responsive enzyme quinone …
-
Combinatorial biochemistry of triterpene saponins in plants
Plants are capable of synthesizing an overwhelming variety of secondary metabolites, many of which possess biological activities relevant for the pharmaceutical and chemical industries. Furthermore, there is an ever increasing demand for novel compounds, due to, among others, the growing drug …
Page 1 of 2