{"id":9944,"date":"1996-01-01T00:00:00","date_gmt":"1996-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1996\/01\/01\/localizacion-subcelular-y-regulacion-de-la-exprexion-del-gen-de-arginina-descarboxilasa-en-avena-sativa\/"},"modified":"1996-01-01T00:00:00","modified_gmt":"1996-01-01T00:00:00","slug":"localizacion-subcelular-y-regulacion-de-la-exprexion-del-gen-de-arginina-descarboxilasa-en-avena-sativa","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/localizacion-subcelular-y-regulacion-de-la-exprexion-del-gen-de-arginina-descarboxilasa-en-avena-sativa\/","title":{"rendered":"Localizacion subcelular y regulacion de la exprexion del gen de arginina descarboxilasa en avena sativa."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Antonio Borrell Azlor <\/strong><\/h2>\n<p>Las poliaminas son compuestos naturales policationicos implicados en diferentes procesos de crecimiento y desarrollo vegetal, entre ellas destaca la diamina putrescina, la triamina espermidina y la tetramina espermina. En plantas, la biosintesis de putrescina se produce por via odc (ornitina descarboxilasa) o via edc (arginina descarboxilasa). En condiciones de estres osmotico, seinduce la senescencia y se activa la via de sintesis de putrescina catalizada por adc. En esta tesis, se demuestra, por un lado, que las poliaminas inhiben la peroxidacion de lipidos en hojas senescentes de avena, lo que explicaria las propiedades antisenescentes atribuidas a estos compuesto. En el segundo capitulo, se plantea un modelo de regulacion de la sintesis de adc en condiciones de estres osmotico y presencia de poliaminas exogenas, y se demuestra que la espermina regula la sintesis de dicha enzima a nivel post-traduccional. En el ultimo capitulo, se estudia la localizacion de la adc en plantas de avena, por fraccionamiento subcelular e inmunocitoquimica, y se demuestra que la enzima se encuentra en cloroplastos asociada a la membrana tilacoidal. Tambien se localizo en plantas de tabaco y en plantas transgenicas que sobreexpresan la adc de avena.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Localizacion subcelular y regulacion de la exprexion del gen de arginina descarboxilasa en avena sativa.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Localizacion subcelular y regulacion de la exprexion del gen de arginina descarboxilasa en avena sativa. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Antonio Borrell Azlor <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1996<\/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>Antoni Fern\u00e1ndez Tiburcio<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Vicente Conejero Tom\u00e1s <\/li>\n<li>Julio Salinas Mu\u00f1oz (vocal)<\/li>\n<li>Josep Allue Creus (vocal)<\/li>\n<li>Jos\u00e9 Antonio Pintor Toro (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Antonio Borrell Azlor Las poliaminas son compuestos naturales policationicos implicados en diferentes procesos de crecimiento y desarrollo [&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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