Dissertations / Theses on the topic 'Inositolphosphates'
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Belgaroui, Nibras. "Dissection moléculaire et physiologique du rôle de l'acide phytique dans la réponse des plantes aux stress de l'environnement." Thesis, Montpellier, SupAgro, 2016. http://www.theses.fr/2016NSAM0037.
Full textThe low availability of phosphorus (P) is a major constraint to growth and development of vegetable crops worldwide. In fact, up to 95% of total P in agricultural soils exists as organic P where phytic acid is the most dominant component, that is not available to plants unless hydrolyzed by specific enzymes called phytases. We are particularly interested to study a microbial phytase PHYC of Bacillus subtilis US417 strain (Farhat et al., 2008) to test its ability to enhance the mobilization of P from PA in Arabidopsis thaliana plants. Firstly, we have demonstrated in this work that overexpression of an intracellular form of phytase PHY-US417 in Arabidopsis resulted in reduction of PA levels in the grain.Physiological analyzes showed that overexpression of this phytase improves plant growth after P deficiency, by increasing the intracellular level of Pi and sulfate. Remarkably, a stronger mobilization of iron was observed during germination in these transgenic lines. In addition, the perception of the outside Pi result of changes in the expression profiles of genes induced by phosphate deficiency. These results show that the AP is not only a storage form in seeds but also acts as a signaling molecule that regulates the interaction between the phosphorus and sulfate homeostasis.These transgenic lines also led to conclude that the AP and its derivatives inositol phosphates may also be involved in the interconnection between the pathways regulating homeostasis of P and Zn. These components also appear to play a role as a positive regulator in the plant response to osmotic stress and this via stimulation of antioxidant activities.In a second step, the effect of the secretion of the PHY-US417 phytase by Arabidopsis roots was studied. The results showed that the extracellular form ePHY-US417 was able to hydrolyze the PA used as the sole P source of Pi in the external environment. Therefore these lines over ePHY-US417 have a better acquisition of Pi and better growth.Finally, this improved growth in Pi deficiency conditions has also affected other plants Arabidopsis or tobacco co-cultivated with plants secreting phytase. Such a step shows that the secreted phytase could have a significant upside potential through the development of new ways of "intercropping" that support sustainable agriculture by limiting the intensive use of phosphate fertilizers
Kincses, Monika. "Biosynthese von aktiviertem Inositolphosphat." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964969564.
Full textNalaskowski, Marcus M. "Multifunktionelle Proteine im Inositolphosphat-Metabolismus." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970027591.
Full textSartelet, Hervé. "Glycosylphosphatidylinositol et inositolphosphate glycanne, ancrage et signalisation." Reims, 1996. http://www.theses.fr/1996REIMS024.
Full textGün, Ümit [Verfasser]. "Synthese von Aminokonduritolen und Inositolphosphat-Analoga / Ümit Gün." Wuppertal : Universitätsbibliothek Wuppertal, 2015. http://d-nb.info/108079655X/34.
Full textPlettenburg, Oliver. "Ein neuartiger, flexibler Zugang zu myo-Inositolphosphaten und -derivaten aus para-Benzochinon." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961473231.
Full textErdmann, Nina Martine [Verfasser], and Sabine [Akademischer Betreuer] Windhorst. "Wirkung von Inositolphosphaten auf die Blutgerinnung / Nina Martine Erdmann ; Betreuer: Sabine Windhorst." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1181947162/34.
Full textErdmann, Nina Martine Verfasser], and Sabine [Akademischer Betreuer] [Windhorst. "Wirkung von Inositolphosphaten auf die Blutgerinnung / Nina Martine Erdmann ; Betreuer: Sabine Windhorst." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1181947162/34.
Full textDallmann, Guido. "Untersuchungen zum Stoffwechsel von Inositolphosphaten in Dictyostelium discoideum Anreicherung und Charakterisierung von Phosphatasen unterschiedlicher Spezifität /." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=982382049.
Full textMartiny, Laurent. "Les phosphoinositides dans les cellules thyroidiennes porcines en culture. Production et role d'un inositolphosphate oligosaccharide." Reims, 1990. http://www.theses.fr/1990REIMS011.
Full textBOGDANOWICZ, PATRICK. "Role d'un inositolphosphate glycanne dans le mecanisme d'action du transforming growth factor beta 1 chez les chondrocytes articulaires." Caen, 1997. http://www.theses.fr/1997CAEN2023.
Full textDeschermeier, Christina. "Molekulare Erkennung von Inositolphosphaten durch ihre Rezeptorproteine Untersuchung von Struktur-Funktions-Beziehungen am Beispiel der Inositol-1,4,5-trisphosphat-3-Kinase /." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=967521629.
Full textDevemy, Emmanuelle. "Transduction du signal de l'erythropoietine : voie des map kinases et systeme glycosylphosphatidylinositol/inositolphosphate-glycanne ; etude dans des cellules normales et cancereuses." Reims, 1995. http://www.theses.fr/1995REIMP203.
Full textGerke, Hannah [Verfasser], and Manfred [Akademischer Betreuer] Jücker. "Untersuchungen zur Expression der humanen Inositolphosphat-Multikinase in humanen Zelllinien und in primären Zellen von Leukämiepatienten / Hannah Gerke. Betreuer: Manfred Jücker." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://d-nb.info/1068931183/34.
Full textKincses, Monika [Verfasser]. "Biosynthese von aktiviertem Inositolphosphat / vorgelegt von Monika Kincses." 2002. http://d-nb.info/964969564/34.
Full textNalaskowski, Marcus M. [Verfasser]. "Multifunktionelle Proteine im Inositolphosphat-Metabolismus / vorgelegt von Marcus M. Nalaskowski." 2003. http://d-nb.info/970027591/34.
Full textPlettenburg, Oliver [Verfasser]. "Ein neuartiger, flexibler Zugang zu myo-Inositolphosphaten und -derivaten aus para-Benzochinon / Oliver Plettenburg." 2000. http://d-nb.info/961473231/34.
Full textGustke, Heike [Verfasser]. "Verteilung und biologische Rolle von Inositolphosphaten im Gehirn von Rattus norvegicus (Berkenhout, 1769) / vorgelegt von Heike Gustke." 2007. http://d-nb.info/984789456/34.
Full textElsässer, Rebecca. "Die zelluläre und molekulare Architektur Inositolphoshat-vermittelter [Inositolphosphat-vermittelter] Signalwege im olfaktorischen System der Säuger /." 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013116214&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textDallmann, Guido [Verfasser]. "Untersuchungen zum Stoffwechsel von Inositolphosphaten in Dictyostelium discoideum : Anreicherung und Charakterisierung von Phosphatasen unterschiedlicher Spezifität / vorgelegt von Guido Dallmann." 2006. http://d-nb.info/982382049/34.
Full textBischoff, Natalie [Verfasser]. "Enzymatische Charakterisierung der humanen Inositolhexakisphosphat-Kinase 2 und zelluläre Funktion von pyrophosphorylierten Inositolphosphaten in Rattus norvegicus (Berkenhout, 1769) / vorgelegt von Natalie Bischoff." 2005. http://d-nb.info/974453838/34.
Full textDeschermeier, Christina [Verfasser]. "Molekulare Erkennung von Inositolphosphaten durch ihre Rezeptorproteine : Untersuchung von Struktur-Funktions-Beziehungen am Beispiel der Inositol-1,4,5-trisphosphat-3-Kinase / vorgelegt von Christina Deschermeier." 2002. http://d-nb.info/967521629/34.
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