{"id":15317,"date":"2018-03-09T09:02:25","date_gmt":"2018-03-09T09:02:25","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/papel-de-las-fitohormonas-en-el-cuajado-y-desarrollo-partenocarpico-del-fruto-en-tomate\/"},"modified":"2018-03-09T09:02:25","modified_gmt":"2018-03-09T09:02:25","slug":"papel-de-las-fitohormonas-en-el-cuajado-y-desarrollo-partenocarpico-del-fruto-en-tomate","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/papel-de-las-fitohormonas-en-el-cuajado-y-desarrollo-partenocarpico-del-fruto-en-tomate\/","title":{"rendered":"Papel de las fitohormonas en el cuajado y desarrollo partenocarpico del fruto en tomate."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Proa\u00f1o Tuma Karina Isabel <\/strong><\/h2>\n<p>En este trabajo se ha investigado el papel de las giberelinas (gas), poliaminas (pas) y auxinas en el cuajado y desarrollo del fruto en tomate utilizando lineas silvestres (wt) y con capacidad de desarrollo partenocarpico (pat-2 y pat-3\/pat-4). En el pericarpo y las semillas de frutos de 20 dias se han encontrado gas tanto de la ruta de no hidroxilacion como de hidroxilacion temprana en c-13, habiendose identificado ga4, ga34 y ga53 por primera vez en frutos de tomate. En estos frutos las gas activas se acumularon en el pericarpo. La efectividad de ga20 en la induccion del desarrollo partenocarpico del fruto implica su conversion a ga1. El crecimiento del ovario pat-2 se reactiv\u00f3 en fases avanzadas del desarrollo floral, antes de la antesis, como resultado de division y expansion celular. Los ovarios pat-2 tenian ovulos de mayor tama\u00f1o que los wt y su crecimiento continuo tambien tras la antesis. El estimulo de la polinizacion y fecundacion aumento los contenidos de gas en los frutos ma\/wt polinizados, en cambio, en ma\/pa-2 parece existir una concentracion de gas suficiente para inducir el cuajado y desarrollo partenocarpico del fruto en ausencia de polinizacion. La mutacion pat-2 afecto la expresion de genes de biosintesis de gas, aumentando los niveles de transcritos de lega20ox-1 en ovarios ma\/pat-2 y cu\/pat-2. La aplicaci\u00f3n de paclobutrazol, la cuantificacion de niveles de gas y el analisis de transcritos de genes de biosintesis de gas (lega20ox-1,-2,-3 y lega30ox-1,-2) en ovarios no polinizados indica que la partenocarpia inducida por el sistema genetico pat-3\/pat-4 depende de gas. La mutaci\u00f3n pat-2 activ\u00f3 la ruta de la ornitina descarboxilasa (odc) de biosintesis de pas aumentando los niveles de transcritos y la actividad odc, asi como el nivel de transcritos de espermidina sintasa y las concentraciones de espermidina y espermina en los ovarios durante el desarrollo floral. Los frutos ma\/wt inducidos con ga3 fueron de menor tama<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Papel de las fitohormonas en el cuajado y desarrollo partenocarpico del fruto en tomate.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Papel de las fitohormonas en el cuajado y desarrollo partenocarpico del fruto en tomate. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Proa\u00f1o Tuma Karina Isabel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 25\/01\/2002<\/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>Mar\u00eda no Fos Causera<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: manuel Acosta echevarr\u00eda <\/li>\n<li>Rafael Lozano ruiz (vocal)<\/li>\n<li>Juan Carbonell gisbert (vocal)<\/li>\n<li>Manuel Tal\u00f3n cubillo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Proa\u00f1o Tuma Karina Isabel En este trabajo se ha investigado el papel de las giberelinas (gas), poliaminas [&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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