{"id":93041,"date":"2018-03-11T10:12:13","date_gmt":"2018-03-11T10:12:13","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/evolucion-experimental-de-la-gama-de-huespedes-del-virus-del-grabado-del-tabaco-tev\/"},"modified":"2018-03-11T10:12:13","modified_gmt":"2018-03-11T10:12:13","slug":"evolucion-experimental-de-la-gama-de-huespedes-del-virus-del-grabado-del-tabaco-tev","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/antropologia-fisica\/evolucion-experimental-de-la-gama-de-huespedes-del-virus-del-grabado-del-tabaco-tev\/","title":{"rendered":"Evoluci\u00f3n experimental de la gama de hu\u00e9spedes del virus del grabado del tabaco (tev)."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Sandra Patricia Agudelo Romero <\/strong><\/h2>\n<p>En esta tesis hemos explorado el coste de la ampliaci\u00f3n de la gama de hu\u00e9spedes del potyvirus del grabado del tabaco (tev), en t\u00e9rminos de eficacia viral.  Estos estudios los realizamos a dos niveles.  En primer lugar empleando hu\u00e9spedes pertenecientes a la misma familia taxon\u00f3mica (tabaco y pimiento).  Donde encontramos que la adaptaci\u00f3n a un nuevo hu\u00e9sped tiene un efecto pleiotr\u00f3pico antagonista en el hu\u00e9sped original.  Estos resultados nos permiten concluir que ampliar la gama de hu\u00e9spedes implica un coste en t\u00e9rminos de eficacia promedio, de manera que la eficacia viral no se maximiza para cada hu\u00e9sped sino que existe un compromiso.  en segundo lugar empleando hu\u00e9spedes pertenecientes a familias taxon\u00f3micas muy alejadas (tabaco y arabidopsis).  En este conjunto de experimentos, hemos pretendido explorar las interacciones establecidas con la planta a nivel transcripcional. Para desarrollar este trabajo utilizamos micromatrices de cdna.  Primero, analizamos los cambios del patr\u00f3n de expresi\u00f3n despu\u00e9s de la infecci\u00f3n de tev.  Donde no encontramos cambios de expresi\u00f3n asociados en particular a tev, estos fueron cambios generales asociados a las infecciones virales.  Por otra parte, simulamos una emergencia viral. En la cual analizamos el patr\u00f3n de expresi\u00f3n g\u00e9nica del nuevo virus adaptado (tev-at17).  Donde identificamos genes de la planta cuya expresi\u00f3n se alter\u00f3 por la infecci\u00f3n con tev (ancestral) y que fueron reprimidos por tev-at17 (adaptado).  Este conjunto de genes cambiaron a medida que el virus se adapt\u00f3 a su nuevo hu\u00e9sped aumentando su eficacia y virulencia, observ\u00e1ndose que muchos genes de respuesta a estr\u00e9s bi\u00f3tico dejaron de ser activados tras la infecci\u00f3n.  Estos cambios fueron consecuencia de un n\u00famero limitado de mutaciones en el genoma de tev.  De hecho, un solo cambio en una prote\u00edna clave del virus era el responsable de los nuevos s\u00edntomas en la planta. por \u00faltimo, comprobamos si la adaptaci\u00f3n viral es espec\u00edfica a un genotipo del hu\u00e9sped o si, po<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Evoluci\u00f3n experimental de la gama de hu\u00e9spedes del virus del grabado del tabaco (tev).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Evoluci\u00f3n experimental de la gama de hu\u00e9spedes del virus del grabado del tabaco (tev). <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Sandra Patricia Agudelo Romero <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/04\/2009<\/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>Santiago Francisco Elena Fito<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: fernando Garcia-arenal rodriguez <\/li>\n<li>Miguel angel Aranda regules (vocal)<\/li>\n<li>pedro Moreno g\u00f3mez (vocal)<\/li>\n<li>Ana Grande perez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Sandra Patricia Agudelo Romero En esta tesis hemos explorado el coste de la ampliaci\u00f3n de la gama [&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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