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Relevant bibliographies by topics / Plant metabolomics / Dissertations / Theses

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Dissertations / Theses on the topic 'Plant metabolomics'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 March 2023

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1

Gullberg, Jonas. "Metabolomics : a tool for studying plant biology /." Umeå : Dept. of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200588.pdf.

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2

Cavaliere, Chiara. "Studies of plant proteomics and metabolomics by means of multidimensional analytical techniques." Doctoral thesis, La Sapienza, 2007. http://hdl.handle.net/11573/916872.

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3

Moradi, Parviz. "Use of metabolomics to study water deficit stress on the medicinal plant thyme." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/4881/.

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Thyme is one of the best known genera because of its diverse medicinal and culinary uses. To understand plant response to drought, a range of genotypes of thyme was examined including Thymus vulgaris, T. serpyllum, T. daenensis, T. kotchyanous, T. capitata and T. zygis. Drought stress was imposed on 30 day old plants and some morpho-physiological traits were measured. Together these traits indicated that T. serpyllum was the most tolerant and T. vulgaris the most susceptible populations. Metabolite profiling using direct-infusion FT-ICR mass spectrometry identified differences in both polar an

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4

George, Rachel. "Understanding the basis of plant population responses to environmental change : an environmental metabolomics approach." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/10777/.

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In this current era of anthropogenic climate change there is a growing need to predict the ability of species and communities to persist under future climate scenarios and land-use regimes. Understanding the mechanisms underpinning interactions between plants and environmental variation is key to this. To elucidate the importance of plant response mechanisms, an environmental metabolomics approach was applied to assesses the interaction between environment and plants in the metabolic phenotype. Phenotypic traits (phenology, productivity and reproductive) varied significantly between population

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5

Tabaza, Yahia Zakaria Abdelqader. "Implementing metabolomics tools in the search for new anti-proliferative agents from the plant-associated endophytes." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=29567.

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In the search for new anticancer agents of natural origin against breast and lung cancer (ZR-75 and A549 cancer cell lines, respectively), plant-associated endophytes could be a good source for bioactive secondary metabolites. Twenty six endophytes were obtained from four different Jordanian plants; Anchusa strigosa, Anthemis palestina, Euphorbia peplus and Rumex cyprius. Internal transcribed spacer (ITS) gene sequencing was implemented to identify the obtained endophytes. Based on their biological activity and chemical profile, three endophytes namely Curvularia australiensis, Chaetomium suba

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6

Ernst, Madeleine. "Metabolômica como ferramenta em taxonomia: O modelo em Arnica. Metabolomics in plant taxonomy: The Arnica model." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-23102013-100232/.

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Taxonomia vegetal é a ciência que trata da descrição, identificação, nomenclatura e classificação de plantas. O desenvolvimento de novas técnicas que podem ser aplicadas nesta área de conhecimento é essencial para dar suporte às decisões relacionadas a conservação de hotspots de biodiversidade. Nesta dissertação de mestrado foi desenvolvido um protocolo de metabolic fingerprinting utilizando MALDI-MS (matrix-assisted laser desorption/ionisation mass spectrometry) e subsequente análise multivariada utilizando scripts desenvolvidos para o pacote estatístico R. Foram classificadas, com base nos s

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7

Rezende, de Castro Moretti Fernanda. "Identification of candidate resistance metabolites to Leifsonia xyli subsp. xyli in sugarcane through metabolomic profiling." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1512478087354334.

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8

Brewer, Helen Caroline. "Functional evaluation of plant defence signalling against Fusarium graminearum and F. culmorum in Arabidopsis floral tissue." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/16552.

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Fusarium Ear Blight (FEB) is a globally important floral disease of cereal crops such as wheat, maize and barley. The predominant causal agents of FEB disease of wheat in the UK are Fusarium culmorum and F. graminearum. Wheat infecting isolates of both of these fungal species infect the floral and silique tissues of the model plant Arabidopsis thaliana, providing a tractable model for analysis of factors determining plant susceptibility or resistance to Fusarium infection. The effect of F. culmorum infection on the metabolic composition (metabolome) of Arabidopsis pedicel tissue following sili

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9

Mazlan, Noor Wini Binti. "Identification of bioactive secondary metabolites from mangrove plant Avicennia lanata and its endophytic fungi by using metabolomics." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=26167.

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10

Cortes, Bermudez Diego Fernando. "Functional genomics through metabolite profiling and gene expression analysis in Arabidopsis thaliana." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/28457.

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In the post-genomic era, one of the most important goals for the community of plant biologists is to take full advantage of the knowledge generated by the Arabidopsis thaliana genome project, and to employ state-of-the-art functional genomics techniques to assign function to each gene. This will be achieved through a complete understanding of what all cellular components do, and how they interact with one another to produce a phenotype. Among the proteins encoded by the Arabidopsis genome are 24 related carboxyl methyltransferases that belong to the SABATH family. Several of the SABATH meth

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11

Conrad, Anna O. "Metabolomics of Quercus spp. to understand and predict resistance to Phytophthora ramorum." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429716653.

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12

Whitehill, Justin G. A. "INVESTIGATIONS INTO MECHANISMS OF ASH RESISTANCE TO THE EMERALD ASH BORER." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306863052.

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13

Mendel, Julian L. "Laurel Wilt Disease: Early Detection through Canine Olfaction and "Omics" Insights into Disease Progression." FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3475.

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Laurel wilt disease is a vascular wilt affecting the xylem and water conductivity in trees belonging to the family Lauraceae. The disease was introduced by an invasive species of ambrosia beetle, Xyleborus glabratus. The beetle, together with its newly described fungal symbiont Raffaelea lauricola (pathogenic to host trees), has lead to the devastation and destruction of over 300 million wild redbay trees in southeastern forests. Ambrosia beetles make up a very unique clade of beetle and share a co-evolved obligatory mutualistic relationship with their partner fungi. Rather than consuming host

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14

Conan, Cécile. "Metabolomics investigations of seaweed extracts used as plant growth biostimulants and transcriptomic studies of their physiological effects on A. thaliana." Electronic Thesis or Diss., Paris 6, 2016. http://www.theses.fr/2016PA066760.

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Développer une agriculture durable et respectueuse de l’environnement, implique l’utilisation de biostimulants tels que les extraits de macro-algues marines dans le but d’améliorer la croissance des plantes ainsi que leur tolérance aux stress biotiques et abiotiques. Ces extraits commerciaux d’algues sont utilisés en agriculture afin de favoriser la nutrition des plantes, d’améliorer leur qualité nutritionnelle et d’accroitre leur rendement. Dans ce domaine quelques modes d’action ont été élucidés par le centre R&D des Laboratoires Goëmar-Arysta. Cependant, jusqu’à présent, les matières ac

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15

Perera, Munasinhage Venura Lakshitha. "Metabolic profiling of plant disease : from data alignment to pathway predictions." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3906.

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Understanding the complex metabolic networks present in organisms, through the use of high throughput liquid chromatography coupled mass spectrometry, will give insight into the physiological changes responding to stress. However the lack of a proper work flow and robust methodology hinders verifiable biological interpretation of mass profiling data. In this study a novel workflow has been developed. A novel Kernel based feature alignment algorithm, which outperformed Agilent’s Mass profiler and showed roughly a 20% increase in alignment accuracy, is presented for the alignment of mass profili

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16

Nkomo, Mpumelelo. "Metabolomic profiling and micropropagation of Salvia africanalutea L. potent against Fusarium verticillioides." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/96135.

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Thesis (PhD)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Salvia africana lutea is one of 26 Sage species indigenous to Southern Africa from a total of 900 worldwide. The genus Salvia belongs to the Lamiaceae family. Labeled a ‘broad spectrum remedy’ S. africana lutea amongst other sage species is medicinally important. Reports are many highlighting its benefits, which include from alleviating coughs and colds to gynaecological complaints. Studies have revealed in vitro antimicrobial, anti-cancer and antioxidant activity. Plant secondary metabolites fundamentally have a strong bea

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17

Gentzel, Irene Nichole. "Water-Soaked Symptoms in Maize as a Response to the Pathogen Pantoea stewartii ." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1565453865973106.

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18

Külheim, Carsten. "The significance of feedback de-excitation." Doctoral thesis, Umeå University, Plant Physiology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-581.

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<p>During photosynthesis sunlight is absorbed by photosynthetic pigments and converted into organic compounds, such as carbohydrates. Photosynthesis needs to be highly regulated, since both too much and too little light are harmful to plant. If too little light is absorbed, a plant cannot store enough energy, which will have effects on growth and fitness of the plant. With too much light absorbed, a dangerous side reaction of photosynthesis, the production of reactive oxygen species can happen. These reactive oxygen species can damage the proteins in the chloroplast and the lipids of the chlor

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19

Laparre, Jérôme. "Élaboration d'une stratégie analytique pour l'identification de métabolites clés impliqués dans la symbiose mycorhizienne entre Rhizophagus irregularis-Medicago truncatula." Toulouse 3, 2012. http://thesesups.ups-tlse.fr/1725/.

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La symbiose mycorhizienne à arbuscule (MA) est une interaction bénéfique entre les racines de la plupart des plantes et certains champignons du sol appartenant aux Gloméromycètes. La plante bénéficie d'une meilleure nutrition hydrique et minérale. En échange elle fournit au champignon MA, symbiote obligatoire, sa source de carbone qui lui permet d'accomplir son cycle de vie. Si quelques signaux symbiotiques impliqués dans les phases précoces de la symbiose MA ont été caractérisés ces dernières années, nos connaissances sont très limitées concernant les molécules régulatrices de la symbiose éch

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20

Saw, Nay Min Min Thaw [Verfasser], and Stefan [Akademischer Betreuer] Martens. "Advances in data analysis in Metabolomics: towards a dynamic view of responses in plant cell cultures / Nay Min Min Thaw Saw ; Betreuer: Stefan Martens." Marburg : Philipps-Universität Marburg, 2019. http://d-nb.info/1201481570/34.

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21

Nagai, Alice. "Interação planta-patógeno: análises químicas em Solanum pimpinellifolium L. e Solanum lycopersicum \'VFNT\' infectadas pelo tomato mottle mosaic virus." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/41/41132/tde-22012018-111200/.

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As plantas se defendem do ataque de patógenos através de um sistema imune composto por duas fases. A primeira delas é mediada por receptores localizados na membrana celular ou intracelularmente, os quais são conhecidos como receptores de reconhecimento padrão (do inglês, pattern recognition receptors - PRR). Esses receptores reconhecem moléculas derivadas de microrganismos, as quais são conservadas evolutivamente e são chamadas de padrões moleculares associados a patógenos (do inglês, pathogen-associated molecular patterns - PAMPs). Esse reconhecimento dispara uma resposta de defesa conhecida

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22

Sanmartín, Martínez Neus. "Deciphering mechanisms underlying Mycorrhizal Induced Resistance in tomato plants." Doctoral thesis, Universitat Jaume I, 2021. http://dx.doi.org/10.6035/14104.2021.722450.

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En esta tesis doctoral he tratado de descifrar algunos de los mecanismos tras la Resistencia Inducida por Micorrizas (MIR). Las plantas micorrizadas son más sensibles y perciben más rápido un futuro estrés. Esto está acompañado por un reordenamiento metabolómico y una aumentada deposición de callosa dirigida por cambios proteicos tras el establecimiento de la simbiosis. Estas modificaciones pueden ser los mecanismos claves en la MIR frente a Botrytis cinerea. Además, cambios puntuales en los volátiles en plantas micorrizadas también pueden contribuir a la mayor resistencia frente al patógeno

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23

Choudhury, Feroza Kaneez. "Rapid Metabolic Response of Plants Exposed to Light Stress." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157543/.

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Environmental stress conditions can drastically affect plant growth and productivity. In contrast to soil moisture or salinity that can gradually change over a period of days or weeks, changes in light intensity or temperature can occur very rapidly, sometimes over the course of minutes or seconds. So, in our study we have taken an metabolomics approach to identify the rapid response of plants to light stress. In the first part we have focused on the ultrafast (0-90 sec) metabolic response of local tissues to light stress and in the second part we analyzed the metabolic response associated wit

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24

Budzinski, Ilara Gabriela Frasson. "Avaliação do metabolismo primário da região cambial e casca de Eucalyptus grandis." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-02012013-172036/.

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O gênero Eucalyptus é uma das principais espécies arbóreas comercialmente plantadas em todo o mundo. Apresenta inúmeras características favoráveis para a produção e comercialização de sua madeira, tais como o rápido crescimento, rotação de ciclo curto e produção de biomassa renovável, com potencial para geração de biocombustível. Apesar de sua grande importância econômica, pouco é conhecido sobre os processos moleculares que envolvem a formação da madeira e casca, principalmente no que diz respeito ao metabolismo primário. Ademais, não se têm muitas informações sobre mudanças moleculares que o

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25

Suarez-Fernandez, Marta. "Multiomics study of Pochonia chlamydosporia tritrophic lifestyle." Doctoral thesis, Universidad de Alicante, 2021. http://hdl.handle.net/10045/117991.

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En esta tesis doctoral se estudia el modo de vida tritrófico del hongo nematófago Pochonia chlamydosporia utilizando técnicas "multiómicas". Pochonia chlamydosporia (= Metacordyceps chlamydosporia) (Goddard) Zare y Gams es un hongo nematófago usado para el control de nematodos agalladores de la raíz (Meloidogyne spp.) (Forghani and Hajihassani, 2020), entre otros. P. chlamydosporia se distribuye por todo el mundo y tiene un modo de vida tritrófico, pudiendo también adoptar estilos de vida endófito y saprófito. El mecanismo que utiliza P. clamydosporia para infectar huevos de nematodo comprende

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26

Juárez, Ortega Paloma. "Production of recombinant Immunoglobulin A in plants for passive immunotherapy." Doctoral thesis, Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/37015.

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Mucosal passive immunization is the transfer of active antibodies from one organism to the mucosal surfaces of another organism for preventing or treating infectious diseases. Mucosal passive immunization has a great potential for the prevention and treatment of enteric infections like Rotavirus, which causes more than 114 million episodes of diarrhoea annually with a death toll of more than 450.000 per year. However, the high cost of recombinant antibodies with the current manufacturing systems based on mammalian cells hampers the production of the high ant

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27

Martucci, Maria Elvira Poleti. "Metabolômica e screening de interações ecoquímicas de plantas da subtribo Lychnophorinae (Asteraceae)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-02052016-114731/.

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A subtribo Lychnophorinae ocorre na região do Cerrado do Brasil e contém cerca de 120 espécies. Recentemente, a filogenia da subtribo Lychnophorinae, baseada em sequências de DNA e dados morfológicos foi capaz de fornecer novas informações sobre a subtribo e seus gêneros. Além disso, o Cerrado brasileiro possivelmente abriga uma parcela considerável da entomofauna neotropical. Os objetivos gerais deste projeto de pesquisa são obter perfis metabólicos de plantas da subtribo Lychnophorinae e utilizá-los como ferramenta quimiotaxonômica para auxiliar na resolução da classificação taxonômica dessa

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28

Marques, Felipe Garbelini. "Análise de metabólitos e proteínas totais em folhas de Eucalyptus grandis durante a infecção por Puccinia psidii." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-07062016-184853/.

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Os mecanismos moleculares envolvidos na resistência de plantas contra patógenos são um tema bastante discutido no meio acadêmico, sendo o objetivo maior dos estudos a diminuição das perdas de produtividade provocadas por doenças em plantações do mundo todo. Muitos modelos de interação patógeno-hospedeiro foram propostos e desenvolvidos priorizando plantas e culturas de rápido desenvolvimento com ciclo de vida curto. Espécies de ciclo longo, porém, devem lidar durante anos - ao menos até a idade reprodutiva - contra o ataque de bactérias, fungos e vírus, sem contar, nesse meio tempo, com recomb

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29

Hall-Ponselè, Andrew M. "Genetic engineering of the primary/secondary metabolic interface in tobacco BY-2 cells." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:be5a3ee3-33c7-455c-b043-409987395f98.

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The supply of precursors from primary metabolism is often overlooked when engineering secondary metabolism for increased product yields. This is because precursor supply may be assumed to be non-limiting, and it is considered difficult to engineer primary metabolism, because control of carbon flow (flux) is generally distributed among most enzymes of the pathway. The aim of this thesis was to increase the production of sterols, part of the isoprenoid class of secondary metabolites, in tobacco (Nicotiana tabacum) Bright Yellow 2 (BY-2) cell cultures. This was achieved by genetically engineering

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30

Kanani, Harin H. "High-throughput time-series metabolomic analysis of a systematically perturbed plant system." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/6895.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Chemical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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31

Xie, Zhengzhi. "Investigation of Plant Specialized Metabolism (Secondary Metabolism) Using Metabolomic and Proteomic Approaches." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/195218.

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Specialized metabolism (secondary metabolism) in glandular trichomes of sweet basil (Ocimum basilicum L.) and accumulation of specialized metabolites (secondary metabolites) in rhizomes of turmeric (Curcuma longa L.) was investigated using proteomic and metabolomic approaches, respectively. In an effort to further clarify the regulation of metabolism in the glandular trichomes of sweet basil, we utilized a proteomics-based approach that applied MudPIT (multidimensional protein identification technology) and GeLC-MS/MS (gel enhanced LC-MS/MS) to protein samples from isolated trichomes of four d

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32

Gargallo, Garriga Albert. "Metabolomics and stoichiometry adapted to the study of environmental impacts on plants." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/310430.

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La metabolòmica ha permès importants avanços en les ciències biològiques. Un nombre creixent d'estudis ecològics han aplicat un enfoc metabolòmic per respondre a preguntes ecològiques (ecometabolòmica) durant els últims anys. El treball desenvolupat al llarg d'aquesta tesi doctoral significa un pas més en el camp de la ecometabolòmica. En el primer capítol d'aquesta tesi doctoral, hem fet l'adaptació del protocol per dur a terme la metabolòmica en estudis ecològics. En ell es descriuen en detall els procediments per al camp i de laboratori per realitzar anàlisis de metabolòmica mitjançant la

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33

Field, Katie Jayne. "The Functional Significance of Genetic Diversity in Plants : An Environmental Metabolomics Approach." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500097.

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34

Dumas, Thibaut. "Les approches –omiques, métabolomique et protéomique, pour l’étude de la relation de cause à effet entre contaminants émergents, produits pharmaceutiques et organismes marins, Mytilus galloprovincialis." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTG026.

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Ces travaux de thèse s’insèrent dans le contexte de la contamination du milieu marin par les contaminants émergents, tels que les produits pharmaceutiques (PP), et de leurs effets sur les organismes marins. L’étude des liens de cause à effet entre l’exposition à un ou plusieurs contaminants et la réponse de la moule méditerranéenne, Mytilus galloprovincialis, a été l’axe central des recherches présentées dans cette thèse. Afin de renseigner les mécanismes d’action et les potentiels effets toxiques des PP, données manquantes dans la littérature, les approches –omiques telles que la métabolomiqu

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Goulbourne, Christopher Nicholas. "The effect of farnesylated prelamin A accumulation on nuclear morphology and function." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:3a578fbd-3223-42a8-87fd-f20fd7ef3e1e.

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Failure to process prelamin A, by the enzyme ZMPSTE24, leads to the build up of farnesylated prelamin A, which has been implicated in causing the symptoms experienced in laminopathies and HIV therapy. A common feature to these conditions is the development of an irregular nuclear boundary, often including deep invaginations that form a nucleoplasmic reticulum. Additionally, dysregulated lipid synthesis is frequently associated with improper lamin A processing and I set out to address the molecular mechanisms behind these two features that could explain lipoatrophy experienced in patients. By u

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Wheat, Nicola M. "An ethnobotanical, phytochemical and metabolomics investigstion of plants from the Paulshoek Communal Area, Namaqualand." Doctoral thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9541.

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Includes bibliographical references.<br>The aim of this thesis is to investigate medicinal plants from different perspectives in an attempt to arrive at a new, integrated and streamlined method for the discovery of bioactive secondary metabolites of plant origin. This will be done through a focused study of the traditionally used medicinal plants of the Paulshoek region of Namaqualand and a demographic study of the people who use them. Trends in traditional medicinal plant choice will be investigated and methods of traditional knowledge acquisition and transfer will be examined. Additional ass

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Yip, Ka Man. "Integration metabolomics and glycomics for understanding the traditional usage of morindae officinalis radix." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/724.

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Morindae Officinalis Radix (MOR), Bajitian in Chinese, is the dried root of Morinda officinalis F.C.How. (Rubiaceae). It is one of the most popular herbal medicines used in the southeast region of China. Various types of chemical constituents have been experimentally shown to be bioactive components of MOR, among which secondary metabolites and saccharides predominate. Pharmacological studies revealed MOR shows kidney tonifying, anti- osteoporosis, antidepressant, anti-inflammatory and antioxidant effect. Since 2002, MOR has been approved as a food supplement for daily healthcare, hence increa

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38

Johansson, Jänkänpää Hanna. "Stress responses of Arabidopsis plants with a varying level of non-photochemical quenching." Doctoral thesis, Umeå universitet, Institutionen för fysiologisk botanik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-48566.

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When light energy input exceeds the capacity for photosynthesis the plant need to dissipate the excess energy and this is done through non-photo-chemical quenching (NPQ). Photochemical quenching (photosynthesis), NPQ and fluorescence are three alternative faiths of excited chlorophylls. PsbS associates to photosystem II and is involved in NPQ. The results presented in this thesis were generated on Arabidopsis plants and mainly based on wildtype Col-0 together with a mutant deficient in PsbS (npq4) and a transgene overexpressing PsbS (oePsbS). We connect light and herbivore stress and show that

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39

Otukpa, Faith Obiye. "Metabolomic analysis of maize (Zea mays&nbsp L.) seedlings treated with selected plant growth promoting rhizobacteria." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/77875.

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Global food production has significantly increased mainly due to the use of high-yield crop varieties, fertilisers, fungicides and pesticides, and improved irrigation methods. Despite the increase in production, there has been a significant cost to the environment in the form of pollution, and to farmers in the form of rising fertiliser and pesticide costs. The impacts on the environment include but are not limited to groundwater contamination, declining soil health and increased pest and pathogen resistance, all which increase the financial cost to farmers. To reverse or rather salvage the si

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Bai, Pengfei. "Dissecting the Layered Rice Innate Immunity at the Molecular, Genetic, and Metabolomic Levels." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1525780095074052.

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Sequera, Mutiozabal Miren Iranzu. "Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/315648.

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Environmental stress is increasingly wearing down crop productivity. Nowadays, one of the main aims of plant research is to elucidate tolerance mechanisms to diverse stresses, in order to provide solutions by generating stress-tolerant plants. In regard with this matter, polyamine signaling pathway is of crucial importance. The major polyamines in plants (putrescine, spermidine and spermine) tend to accumulate in response to stress and are associated with a protective role. The trend of their accumulation is related to the stress the plant is sensing; in fact, polyamine biosynthetic pathway is

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Palama, Tony. "NMR-based metabolomic characterization of Vanilla planifolia." Thesis, La Réunion, 2010. http://www.theses.fr/2010LARE0005.

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Vanilla planifolia, orchidée épiphite florifère, est la principale source naturelle de l'arôme de vanille. Largement utilisé dans les produits laitiers, les boissons, les pâtisseries et les parfums, cet arôme est le résultat d'un processus complexe : de huit à neuf mois après la fécondation des fleurs, les gousses matures sont récoltées et traitées pendant environ un an afin de libérer leur bouquet aromatique. Aujourd'hui, plus de la moitié de la production mondiale de vanille provient de Madagascar. Pour faire face à cette concurrence, les producteurs de la Réunion se tournent vers la product

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Ferrier, Jonathan. "Ethnobotany, Pharmacology, and Metabolomics of Antidiabetic Plants used by the Eeyou Istchee Cree, Lukomir Highlanders, and Q’eqchi’ Maya." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30441.

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A study was undertaken of plants used for treatment of diabetic symptoms by traditional healers of the Eeyou Istchee Cree (Canada), Lukomir Highlanders (Bosnia & Herzegovina), and Q’eqchi’ Maya (Belize). All antidiabetic plants were ranked by syndromic importance value (SIV) based on 15 symptoms, all of which were recognized by the Cree and Maya and 8 by the Highlanders. The Cree used only 18 species, the Highlanders 41, and the Maya 150, numbers which reflect the diversity of flora in their region. Vaccinium (Ericaceae) was one of the few genera in all three regions and the only consensus gen

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Bapela, Mahwahwatse Johanna. "Nmr-based metabolomic study of medicinal plants used against malaria and the isolation of bioactive alkaloids." Thesis, University of Pretoria, 2016. http://hdl.handle.net/2263/53513.

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Despite the significant advances achieved in lessening the burden of malaria and other tropical diseases in recent years, protozoal infections remain a major cause of mortality in many developing countries, with malaria accounting for a large proportion of the recorded mortality. The main aim of this study was to bioprospect indigenous plant species for novel antiplasmodial plant products by means of NMRbased metabolomics. In this study, an ethnobotanical criterion was followed in collecting twenty indigenous plant species used to treat malaria or its symptoms by Vha-Venda people livin

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Badr, Ashraf. "In vitro and ex vitro potato plantlets (Solanum tuberosum) metabolic response to exogenously supplied sucrose : a metabolomic approach." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27937/27937.pdf.

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Jaeger, Frederick Howard. "Simplified Plant Sample Preparation for use in Gas Chromatography-Mass Spectrometry (GC-MS) Based Metabolomic Profiling and Targeted Analyte Quantitation." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-02202008-155316/.

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A simple, fast, reproducible and less laborious sample preparation protocol was developed for the analysis of Arabidopsis thaliana using Gas chromatography coupled with mass spectrometry (GC-MS). In particular, a semi-automated machine tool is used to replace the traditional mortar-pestle method in tissue grinding. One-pot chemical extraction-derivatization is used to provide simplified sample preparation over the conventional multi-step liquid-liquid extraction protocol. Wild-type and transgenic Arabidopsis thaliana seedlings were used as the model system to evaluate performance of this newly

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Choi, Suh-Yeon. "Metabolomic and transcriptomic analysis of polyhydroxybutyrate (PHB) accumulating Arabidopsis and switchgrass unveiling metabolic consequences of bioplastic accumulation in plant plastids /." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3369821.

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Thesis (Ph.D.)--Iowa State University, 2009.<br>Title from PDF title page (ProQuest website, viewed on October 14, 2009) Supplemental files include tables and scatter plot slides. Includes bibliography.

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Bentley, Joanne. "Comparative metabolomic profiling of phenolics in the desiccation-tolerant “resurrection plant” Myrothamnus flabellifolia (Myrothamnaceae) using conventional and green chemistry-based solvent systems." Doctoral thesis, Faculty of Science, 2019. http://hdl.handle.net/11427/30437.

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Myrothamnus flabellifolia (Myrothamnaceae) belongs to a group of ±300 angiosperm species known as “resurrection plants” that exhibit vegetative desiccation tolerance. They are able to survive dehydration to an air-dry state, tolerating up to 95% cellular water loss for a prolonged period of time followed by the rapid recovery of metabolism in the tissues within 24–72 h of rehydration. Prolonged cellular water loss is deleterious and is associated with the production of reactive oxygen species (ROS), which causes cellular degeneration, and ultimately, death. Resurrection plants have evolved var

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Tawfike, Ahmed. "Metabolomics and dereplication studies of endophytic metabolites from some Egyptian medicinal plants in the search for new potential anti-cancer and antimicrobial drugs." Thesis, University of Strathclyde, 2015. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25719.

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Endophytes are microbes that inhabit living, internal tissues of plants without causing any immediate, apparent negative effects. Endophytic fungi associated with medicinal plants represent a potential source of novel chemistry and biology. This study involved isolation of three endophytic fungal strains from two Egyptian medicinal plants, Terminalia laxiflora and Markhamia platicalyx. Identification of the strains has been achieved through molecular biological methods. Metabolomic profiling, using 2D-NMR and HR-ESIFTMS were done at different stages of the growth phase for both solid and liqui

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Turi, Christina. "The novel use of metabolomics as a hypothesis generating technique for analysis of medicinal plants : Ligusticum canbyi Coult. & Rose and Artemisia tridentata Nutt." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/47036.

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In response to the environment, plants produce a phytochemical arsenal to communicate and to withstand abiotic and biotic pressures. The average plant tissue contains upwards of 30,000 phytochemicals. The vast majority of approaches used to study plant chemistry are reductionist and only target specific classes of compounds which can be easily isolated or detected. Metabolomics is the qualitative and quantitative analysis of all metabolites present in a biological sample. By providing researchers with a phytochemical snapshot of all existing metabolites present in a sample, metabolomics has a

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