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dc.contributorChristou, Paul
dc.contributorZhu, Changfu
dc.contributorUniversitat de Lleida. Departament de Producció Vegetal i Ciència Forestal
dc.creatorFarré Martinez, Gemma
dc.date.accessioned2018-06-15T07:07:34Z
dc.date.available2018-06-15T07:07:34Z
dc.date.issued2012-07-05
dc.identifierL-970-2012
dc.identifierhttp://hdl.handle.net/10803/84102
dc.identifier.urihttp://hdl.handle.net/10459.1/63983
dc.descriptionTransgenic approaches hold great promise in alleviating, to a major extend such micronutrient deficiencies as exemplified by numerous reports in the literature over the past decade. However, there is a limited understanding of the regulatory mechanisms that control the accumulation of specific vitamins in plants. For this reason, I analyzed a maize population expressing combinations of the carotenogenic genes Zmpsy1, PacrtI, Gllycb, Glbch and ParacrtW in an effort to unravel as yet unknown regulatory bottlenecks.I also investigated in more detail the corn bch family. My results suggest that diverse regulatory strategies may be in operation to control the accumulation of carotenoids in endosperm tissue. I recovered multiple independent transgenic rice lines expressing Arabidopsis thaliana ρ hydroxyphenylpyruvate dioxygenase (HPPD), which catalyzes the first committed step in vitamin E biosynthesis. My results revealed bottlenecks that act as metabolic tipping points in the pathway.
dc.formatapplication/pdf
dc.format295 p.
dc.languageeng
dc.publisherUniversitat de Lleida
dc.rightsL'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceTDX (Tesis Doctorals en Xarxa)
dc.subjectVitamines
dc.subjectBiofortificació
dc.subjectBlat de moro
dc.subjectArrós
dc.subjectSeguritat alimentaria
dc.subjectVitaminas
dc.subjectBiofortifición
dc.subjectMaíz
dc.subjectArroz
dc.subjectSeguridad alimentaria
dc.subjectVitamin
dc.subjectBiofortification
dc.subjectMaize
dc.subjectRice
dc.subjectFood security
dc.subjectBioquímica i Biología Molecular
dc.subject577
dc.titleTowards vitamin biofortification in staple cereal crops in a socio-political and food security context
dc.typeinfo:eu-repo/semantics/doctoralThesis
dc.typeinfo:eu-repo/semantics/publishedVersion


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