{"id":80058,"date":"2018-03-09T23:25:58","date_gmt":"2018-03-09T23:25:58","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-molecular-y-funcional-del-gen-acil-coa-oxidasa-1-acx1-de-arabidopsis-thaliana-en-respuesta-a-estres\/"},"modified":"2018-03-09T23:25:58","modified_gmt":"2018-03-09T23:25:58","slug":"caracterizacion-molecular-y-funcional-del-gen-acil-coa-oxidasa-1-acx1-de-arabidopsis-thaliana-en-respuesta-a-estres","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/caracterizacion-molecular-y-funcional-del-gen-acil-coa-oxidasa-1-acx1-de-arabidopsis-thaliana-en-respuesta-a-estres\/","title":{"rendered":"Caracterizaci\u00f3n molecular y funcional del gen acil-coa oxidasa 1 (acx1) de arabidopsis thaliana en respuesta a estr\u00e9s"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Cristina Mart\u00ednez Hern\u00e1ndez <\/strong><\/h2>\n<p>Tradicionalmente se ha considerado a la -oxidaci\u00f3n como un proceso fundamental durante la germinaci\u00f3n de las semillas, movilizando los l\u00edpidos almacenados y proporcionando a la planta la energ\u00eda suficiente para su desarrollo. no obstante, tambi\u00e9n est\u00e1 implicada en el procesamiento de mol\u00e9culas complejas que dan lugar a mol\u00e9culas m\u00e1s simples, como los \u00e1cidos jasm\u00f3nico (ja) y salic\u00edlico (sa), con funciones importantes en el desarrollo de la planta y en las respuestas de defensa frente a determinados factores de estr\u00e9s.  en el presente trabajo se ha llevado a cabo el an\u00e1lisis molecular y funcional de los genes acxs de arabidopsis thaliana, responsables del primer paso de la -oxidaci\u00f3n. De los seis genes acxs descritos, se comprob\u00f3 que s\u00f3lo acx1 responde a factores de estr\u00e9s de naturaleza bi\u00f3tica y abi\u00f3tica, representando un nodo de activaci\u00f3n de respuestas frente a diferentes factores de estr\u00e9s. mediante la generaci\u00f3n de l\u00edneas transg\u00e9nicas antisentido para axc1 se demostr\u00f3 que este gen codifica una de las prote\u00ednas de la -oxidaci\u00f3n que participa en la s\u00edntesis de ja en respuesta a la herida en arabidopsis.  esta funci\u00f3n de acx1 conecta la -oxidaci\u00f3n con la activaci\u00f3n de respuestas de defensa de la planta frente a un amplio rango de factores de estr\u00e9s.  no obstante, la funci\u00f3n de acx1 no es limitante para la activaci\u00f3n de defensas dependientes de ja o sa, puesto que l\u00edneas de t-dna nulas para acx1 activan de manera plena la expresi\u00f3n de genes marcadores de ambas v\u00edas de se\u00f1alizaci\u00f3n en respuesta a factores de estr\u00e9s como la herida o la inoculaci\u00f3n con pat\u00f3genos biotrofos. Tambi\u00e9n se comprob\u00f3 que la reducci\u00f3n o anulaci\u00f3n del transcrito de acx1 no da lugar a cambios en procesos del desarrollo en los que el ja o la -oxidaci\u00f3n est\u00e1n implicados como la germinaci\u00f3n, la transici\u00f3n a la fase reproductiva o la senescencia, y tampoco altera la resistencia basal frente a pat\u00f3genos biotrofos. Sin embar<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n molecular y funcional del gen acil-coa oxidasa 1 (acx1) de arabidopsis thaliana en respuesta a estr\u00e9s<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n molecular y funcional del gen acil-coa oxidasa 1 (acx1) de arabidopsis thaliana en respuesta a estr\u00e9s <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Cristina Mart\u00ednez Hern\u00e1ndez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 23\/05\/2006<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jose Leon Ramos<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Rio legazpi Luis alfonso de <\/li>\n<li>carmen Castresana fernandez (vocal)<\/li>\n<li>salom\u00e9 Prat mongui\u00f3 (vocal)<\/li>\n<li>\u00f3scar Lorenzo s\u00e1nchez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cristina Mart\u00ednez Hern\u00e1ndez Tradicionalmente se ha considerado a la -oxidaci\u00f3n como un proceso fundamental durante la germinaci\u00f3n [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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