{"id":909,"date":"1994-01-01T00:00:00","date_gmt":"1994-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1994\/01\/01\/implicaciones-de-la-ruta-biosintetica-del-etileno-y-poliaminas-en-la-maduracion-y-germinacion-de-nicotiana-tabacum-cultivado-in-vitro\/"},"modified":"1994-01-01T00:00:00","modified_gmt":"1994-01-01T00:00:00","slug":"implicaciones-de-la-ruta-biosintetica-del-etileno-y-poliaminas-en-la-maduracion-y-germinacion-de-nicotiana-tabacum-cultivado-in-vitro","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/implicaciones-de-la-ruta-biosintetica-del-etileno-y-poliaminas-en-la-maduracion-y-germinacion-de-nicotiana-tabacum-cultivado-in-vitro\/","title":{"rendered":"Implicaciones de la ruta biosintetica del etileno y poliaminas en la maduracion y germinacion de nicotiana tabacum cultivado \u00abin vitro\u00bb."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Fatiha Chibi <\/strong><\/h2>\n<p>Se ha estudiado la relacion entre la biosintesis de etileno y poliaminas con la maduracion y germinacion, utilizando como sistema modelo el polen binucleado de nicotiana tabacum cultivado \u00abin vitro\u00bb. Se ha podido ver que gran parte de etileno que produce una antera completa proviene del tejido esporofitico y no del polen. El proceso de maduracion \u00abin vitro\u00bb del grano de polen desde el estadio binucleado medio, no se lleva a cabo en presencia de: inhibidores de la actividad acc-sintasa y acc-oxidasa, de ag+ (no3ag), inhibidor de la accion del etileno. El grano de polen contiene putrescina, espermidina, espermina y carece de cadaverina, siendo la espermidina la poliamina mas abundante seguida de la putrescina y la espermina. Durante la maduracion in vitro se produce un aumento en el nivel de poliaminas libres y conjugadas, probablemente como resultado de la presencia de glutamina en el medio de maduracion. Si esto es asi, se refuerza el papel de las poliaminas en el proceso de maduracion, destacando en el mismo la putrescina. La adc fue mas activa que la odc, tanto en el polen aislado como en la antera. Ambos enzimas alcanzan un maximo en el estadio binucleado.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Implicaciones de la ruta biosintetica del etileno y poliaminas en la maduracion y germinacion de nicotiana tabacum cultivado \u00abin vitro\u00bb.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Implicaciones de la ruta biosintetica del etileno y poliaminas en la maduracion y germinacion de nicotiana tabacum cultivado \u00abin vitro\u00bb. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Fatiha Chibi <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Granada<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1994<\/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>\u00e1ngel Jes\u00fas Matilla Carro<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Ignacio Zarra Cameselle <\/li>\n<li> Rodriguez Garcia Mar\u00eda  Isabel (vocal)<\/li>\n<li>Rosario De Felipe Anton (vocal)<\/li>\n<li>Antoni Fern\u00e1ndez Tiburcio (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Fatiha Chibi Se ha estudiado la relacion entre la biosintesis de etileno y poliaminas con la maduracion [&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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