{"id":21659,"date":"2018-03-09T09:11:32","date_gmt":"2018-03-09T09:11:32","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/variabilidad-del-viroide-de-la-exocortis-cevd-y-del-viroide-1-cvd-i-de-los-ca%c2%adtricos\/"},"modified":"2018-03-09T09:11:32","modified_gmt":"2018-03-09T09:11:32","slug":"variabilidad-del-viroide-de-la-exocortis-cevd-y-del-viroide-1-cvd-i-de-los-ca%c2%adtricos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/variabilidad-del-viroide-de-la-exocortis-cevd-y-del-viroide-1-cvd-i-de-los-ca%c2%adtricos\/","title":{"rendered":"Variabilidad del viroide de la exocortis (cevd) y del viroide 1  (cvd-i) de los c\u00edtricos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> M\u00f3nica Gand\u00eda G\u00f3mez <\/strong><\/h2>\n<p>Los viroides son mol\u00e9culas de rna circulares de cadena simple covalentemente cerradas, sincapacidad codificante y que se replican aut\u00f3nomamente. Su tama\u00f1o oscila entre 246 y 399 nucle\u00f3tidos y se les considera f\u00f3siles moleculares del mundo de rna. Los viroides, al igual que otros genomas de rna, se replican en ausencia de mecanismos de prueba de lectura lo cual da lugar a una elevada tasa de variabilidad, que se traduce en una r\u00e1pida evoluci\u00f3n de los mismos. siguen el modelo de cuasiespecies (eigen, 1993) seg\u00fan el cual los genomas de rna dan lugar a poblaciones heterog\u00e9neas de variantes de secuencia.  \u00e9stos no poseen una secuencia \u00fanica, son mezclas m\u00e1s o menos complejas de secuencias relacionadas que se distribuyen en torno a una secuencia maestra definida como la de mayor eficacia biol\u00f3gica. As\u00ed pues un viroide infectar\u00eda un h\u00faesped susceptible como un conjunto de variantes de secuencia. en este trabajo se estudia la variabilidad de dos viroides de los c\u00edtricos, el viroide causante de la exocortis (cevd) y el viroide i (cvd-i).  se estudi\u00f3 un aislado t\u00edpico de cev d (e-117) y se determin\u00f3 que estaba compuesto por 44 variantes de secuencia distintas, de las cuales una (vi) era predominante en la poblaci\u00f3n. Se llevaron acabo estudios para determinar las propiedades biol\u00f3gicas de 9 variantes distintas representadas por m\u00e1s de un clon (vi-v9). Los resultados mostraron que s\u00f3lo la variante dominante (vi) y otra de las variantes (v6), resultaban infecciosas, generando una poblaci\u00f3n de variantes similar a la del aislado del cual proced\u00edan. En ambos casos se recuper\u00f3 a variante vi como dominante. Se realizaron estudios de infectividad en otro hu\u00e9sped alternativo (ginura) distinto del hu\u00e9sped en el que se hab\u00edan identificado las variantes (cidro) y se observ\u00f3 ausencia de infectividad de las variantes aisladas, lo cual apunta a que \u00e9stas deben estar sometidas a alguna presi\u00f3n selectiva por parte del hu\u00e9sped.  se<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Variabilidad del viroide de la exocortis (cevd) y del viroide 1  (cvd-i) de los c\u00edtricos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Variabilidad del viroide de la exocortis (cevd) y del viroide 1  (cvd-i) de los c\u00edtricos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 M\u00f3nica Gand\u00eda G\u00f3mez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Universitat de val\u00e9ncia (estudi general)<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 17\/02\/2003<\/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>Nuria Duran Vila<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: ricardo Flores pedauye <\/li>\n<li>pedro Moreno g\u00f3mez (vocal)<\/li>\n<li>concepci\u00f3n Jord\u00e1 guit\u00e9rrez (vocal)<\/li>\n<li>vicente Pall\u00e1s benet (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de M\u00f3nica Gand\u00eda G\u00f3mez Los viroides son mol\u00e9culas de rna circulares de cadena simple covalentemente cerradas, sincapacidad codificante [&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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