{"id":57186,"date":"2018-03-09T22:44:58","date_gmt":"2018-03-09T22:44:58","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/resistencia-a-estrobilurinas-en-podosphaera-fusca-distribucion-geografica-y-bases-moleculares\/"},"modified":"2018-03-09T22:44:58","modified_gmt":"2018-03-09T22:44:58","slug":"resistencia-a-estrobilurinas-en-podosphaera-fusca-distribucion-geografica-y-bases-moleculares","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/micologia\/resistencia-a-estrobilurinas-en-podosphaera-fusca-distribucion-geografica-y-bases-moleculares\/","title":{"rendered":"Resistencia a estrobilurinas en podosphaera fusca: distribuci\u00f3n geogr\u00e1fica y bases moleculares"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Dolores Fern\u00e1ndez Ortu\u00f1o <\/strong><\/h2>\n<p>En espa\u00f1a, se ha descrito como \u00fanico agente causal del o\u00eddio de las cucurbit\u00e1ceas al hongo podosphaera fusca. En la actualidad, el principal m\u00e9todo de control de la enfermedad consiste en el empleo combinado de fungicidas con distintos mecanismos de acci\u00f3n. Uno de los grupos de fungicidas m\u00e1s utilizados son las estrobilurinas. Estos compuestos, se caracterizan por ser unos potentes inhibidores de la respiraci\u00f3n mitocondrial, siendo su diana el centro qo del complejo proteico citocromo bc1, por ello son tambi\u00e9n llamados qols. Al actuar, bloquean la s\u00edntesis de atp provocando la muerte de pat\u00f3geno al no poder realizar sus funciones vitales. Aunque el control qu\u00edmico sea el m\u00e1s empleado, conlleva el grave inconveniente de la aparici\u00f3n de cepas resistentes a estos productos fitosanitarios con relativa frecuencia.     para evaluar los niveles de resistencia\/sensibilidad a estrobilurinas en p.Fusca, se usaron tres fungicidas pertenecientes a este grupo (kresoxim metil, azoxistrobin y trifloxistrobin). El c\u00e1lculo de los valores de cmi y ce50 se realiz\u00f3 mediante un ensayo con discos de cotiledones de calabac\u00edn mantenidos in vitro. Tras analizar 50 aislados de p.Fusca, se observ\u00f3 resistencia cualitativa a estrobilurinas, ya que se obtuvieron dos tipos diferentes de cepas: (cmi menor 25ug\/ml) y resistentes (cmi mayor 500 ug\/ml). Adem\u00e1s, esta resistencia fue, en todos los casos, cruzada, puesto que las cepas resistentes a cualquiera de estos fungicidas lo eran tambi\u00e9n a los otros dos. A partir de este momento, se utiliz\u00f3 como concentraci\u00f3n discriminatoria la de 250 ug\/ml, en esta concentraci\u00f3n \u00fanicamente se desarrollar\u00edan los aislados resientes del hongo.     para obtener una informaci\u00f3n m\u00e1s completa sobre la distribuci\u00f3n de la resistencia a estrobilurinas en p.Fusca en la mitad sur de espa\u00f1a, se analizaron 250 aislados procedentes de distintas provincias (almer\u00eda, badajoz, ciudad real, c\u00f3rdoba, murcia y Valencia) y campa\u00f1as agr\u00edcolas (2002<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Resistencia a estrobilurinas en podosphaera fusca: distribuci\u00f3n geogr\u00e1fica y bases moleculares<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Resistencia a estrobilurinas en podosphaera fusca: distribuci\u00f3n geogr\u00e1fica y bases moleculares <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Dolores Fern\u00e1ndez Ortu\u00f1o <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 23\/02\/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>Alejandro P\u00e9rez Garc\u00eda<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: fernando Garcia-arenal rodriguez <\/li>\n<li>Mar\u00eda  isabel Gonzalez roncero (vocal)<\/li>\n<li>Jos\u00e9 Garc\u00eda jim\u00e9nez (vocal)<\/li>\n<li>paloma S\u00e1nchez torres (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Dolores Fern\u00e1ndez Ortu\u00f1o En espa\u00f1a, se ha descrito como \u00fanico agente causal del o\u00eddio de las cucurbit\u00e1ceas [&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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