{"id":54970,"date":"2006-09-10T00:00:00","date_gmt":"2006-09-10T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-de-genes-reguladores-de-la-morfogenesis-y-la-patogenesis-en-fusarium-oxysporum-f-sp-lycopersici\/"},"modified":"2006-09-10T00:00:00","modified_gmt":"2006-09-10T00:00:00","slug":"caracterizacion-de-genes-reguladores-de-la-morfogenesis-y-la-patogenesis-en-fusarium-oxysporum-f-sp-lycopersici","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/genetica\/caracterizacion-de-genes-reguladores-de-la-morfogenesis-y-la-patogenesis-en-fusarium-oxysporum-f-sp-lycopersici\/","title":{"rendered":"Caracterizaci\u00f3n de genes reguladores de la morfog\u00e9nesis y la patog\u00e9nesis en fusarium oxysporum f.sp.lycopersici"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Martinez Rocha Ana Lilia <\/strong><\/h2>\n<p>Fusarium oxysporum f.Sp.Lycopersici es un hongo pat\u00f3geno que infecta plantas de tomate a trav\u00e9s de su ra\u00edz.  durante este trabajo se caracteriz\u00f3 el fen ctf1 de f.Oysporum. La prote\u00edna deducida de este gen contiene un motivo de uni\u00f3n al dna del tipo zn(ii)2cys6, tres se\u00f1ales de localizaci\u00f3n nuclear y varios sitios posibles de fosforilaci\u00f3n, presenta un 88,9% de identidad con ctf1a de f.Solani, que regula genes cutinasa y cuya anulaci\u00f3n tiene como resultado la p\u00e9rdida de virulencia, y un 57,5% con el factor de transcripci\u00f3n fara de a.Nidulans, implicado en la regulaci\u00f3n de genes del metabolismo de \u00e1cidos grasos. Se crearon mutantes en el gen ctf1 con un alelo inactivo (dctf1) y un alelo constitutivo bajo el promotor gpda de a.Nidulans (ctf1c). Ambos mutantes mostraron diferencias de crecimiento en medio s\u00f3lido con aceite de oliva.  se aisl\u00f3 el gen cut1, responsable de una cutinasa estructural, y se determin\u00f3 su regulaci\u00f3n transcripcional por ctf1. Se identific\u00f3 la existencia de un gen lipasa, ort\u00f3logo a fgl1 responsable de una lipasa extracelular del hongo f.Graminearum y se investig\u00f3 su regulaci\u00f3n por ctf1. Se compararon las actividades cutinasa y lipasa totales, encontr\u00e1ndose diferencias significativas. La anulaci\u00f3n y la sobreexpresi\u00f3n del gen ctf1 no afect\u00f3 a la virulencia de f.Oxysporum sobre plantas y frutos de tomate, lo que sugiere que la regulaci\u00f3n transcripcional de los genes del metabolismo de \u00e1cidos grasos juega un papel diferente en los pat\u00f3genos foliares.     adem\u00e1s, se estudi\u00f3 el papel de la prote\u00edna g de bajo peso molecular rho1 en f.Oxysporum. Se obtuvieron mutantes en el gen rho1, por anulaci\u00f3n del alelo silvestre (drho1) o por creaci\u00f3n de una versi\u00f3n constitutivamente activa (drho1+rho1g14v) de esta prote\u00edna. Se determin\u00f3 el nivel de prote\u00edna rho en estos mutantes y en la estirpe silvestre, observ\u00e1ndose una banda de 22 kda en todas las estirpes de estudio y la casi desaparici\u00f3n de la misma en el mutante drh<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n de genes reguladores de la morfog\u00e9nesis y la patog\u00e9nesis en fusarium oxysporum f.sp.lycopersici<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n de genes reguladores de la morfog\u00e9nesis y la patog\u00e9nesis en fusarium oxysporum f.sp.lycopersici <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Martinez Rocha Ana Lilia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 C\u00f3rdoba<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 09\/10\/2006<\/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>Mar\u00eda  Isabel Gonzalez Roncero<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: emilio Fernandez reyes <\/li>\n<li>unai Ugalde Martinez (vocal)<\/li>\n<li>concepcion Hera  diaz de lia\u00f1o (vocal)<\/li>\n<li>yolanda Sanchez martin (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Martinez Rocha Ana Lilia Fusarium oxysporum f.Sp.Lycopersici es un hongo pat\u00f3geno que infecta plantas de tomate a [&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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