{"id":62006,"date":"2018-03-09T22:49:55","date_gmt":"2018-03-09T22:49:55","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/funcion-del-acido-salica%c2%adlico-en-la-floracion-acelerada-por-estres-en-arabidopsis-thaliana\/"},"modified":"2018-03-09T22:49:55","modified_gmt":"2018-03-09T22:49:55","slug":"funcion-del-acido-salica%c2%adlico-en-la-floracion-acelerada-por-estres-en-arabidopsis-thaliana","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/biologia-celular\/funcion-del-acido-salica%c2%adlico-en-la-floracion-acelerada-por-estres-en-arabidopsis-thaliana\/","title":{"rendered":"Funci\u00f3n del \u00e1cido salic\u00edlico en la floraci\u00f3n acelerada por estr\u00e9s en arabidopsis thaliana"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Silvia Segarra Manzano <\/strong><\/h2>\n<p>En arabidopsis, el momento en que se produce la transici\u00f3n a la floraci\u00f3n viene determinado por la interacci\u00f3n entre la competencia de la planta para su desarrollo interno y las se\u00f1ales medioambientales que determinan las condiciones favorables para el suceso reproductivo. Sin embargo, plantas expuestas a condiciones de estr\u00e9s medioambiental pueden activar el programa de floraci\u00f3n prematuramente. Algunos factores de estr\u00e9s capaces de alterar el tiempo de floraci\u00f3n, como la infecci\u00f3n por pat\u00f3genos, temperaturas extremas o altas irradiaciones, conllevan un incremento en los niveles de algunos metabolitos como etileno, \u00e1cido abc\u00edsico y \u00e1cido salic\u00edlico (sa) (blee, 2002; dempsey et al., 1999; ni et al., 1996; pastori y foyer, 2002; raskin, 1992).  estudios recientes sugieren que sa pueda ser un regulador de la transici\u00f3n a la floraci\u00f3n en plantas de arabidopsis thaliana sometidas a estr\u00e9s (mart\u00ednez et al., 2004). Para que se produzca un adelanto en el tiempo de floraci\u00f3n en plantas sometidas a irradiaci\u00f3n con luz uv-c es necesaria tanto la s\u00edntesis como la acumulaci\u00f3n de sa, ya que no se produce en plantas transg\u00e9nicas nahg, que no acumulan sa ya que lo degradan r\u00e1pidamente a catecol. Sin embargo, se desconoce en gran medida el mecanismo mediante el cual el sa regula el tiempo de floraci\u00f3n.  mediante el uso de plantas transg\u00e9nicas en las que el promotor de bgl2, gen pr inducible por sa, est\u00e1 fusionado al gen reportador gus, se determin\u00f3 el espacio temporal en el que se correlacionan cambios en los niveles end\u00f3genos de sa con la activaci\u00f3n de la expresi\u00f3n de genes que inducen la transici\u00f3n floral. Bajo nuestras condiciones de cultivo, el d\u00e9cimo d\u00eda tras la siembra se da un aumento tanto de los niveles de tinci\u00f3n gus, asociados al tejido vascular, como de la expresi\u00f3n del gen ics1\/sid2 que codifica la isocorismato sintasa 1 encargada de sintetizar sa en arabidopsis (wildermuth et al., 2001) y del gen activador de la floraci\u00f3n ft, cuy<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Funci\u00f3n del \u00e1cido salic\u00edlico en la floraci\u00f3n acelerada por estr\u00e9s en arabidopsis thaliana<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Funci\u00f3n del \u00e1cido salic\u00edlico en la floraci\u00f3n acelerada por estr\u00e9s en arabidopsis thaliana <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Silvia Segarra Manzano <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 17\/12\/2007<\/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: Juan Carbonell gisbert <\/li>\n<li>paloma Mas Martinez (vocal)<\/li>\n<li> Jarillo quiroga Jos\u00e9 Antonio (vocal)<\/li>\n<li>paula Suarez lopez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Silvia Segarra Manzano En arabidopsis, el momento en que se produce la transici\u00f3n a la floraci\u00f3n viene [&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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