{"id":54581,"date":"2018-03-09T22:42:19","date_gmt":"2018-03-09T22:42:19","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/posible-control-biologico-de-la-escaldadura-foliar-en-cana-de-azucar\/"},"modified":"2018-03-09T22:42:19","modified_gmt":"2018-03-09T22:42:19","slug":"posible-control-biologico-de-la-escaldadura-foliar-en-cana-de-azucar","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/posible-control-biologico-de-la-escaldadura-foliar-en-cana-de-azucar\/","title":{"rendered":"Posible control biol\u00f3gico de la escaldadura foliar en ca\u00f1a de az\u00facar"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Yolanda Blanco L\u00f3pez <\/strong><\/h2>\n<p>En la agricultura, los dos tipos de cultivos m\u00e1s importantes mundialmente son las gram\u00edneas y las leguminosas. Dentro de las gram\u00edneas, la ca\u00f1a de az\u00facar ocupa un lugar muy importante, ya que es uno del os principales cultivos utilizados por el hombre en su alimentaci\u00f3n. Esta monocotiled\u00f3nea es una planta de gran porte, por lo que en su interior puede albergar numerosos microorganismos end\u00f3fitos. Gluconacetobacter diazotrophicus y herbaspirillum rubrisubalbicans son bacterias end\u00f3fitas obligadas, fijadoras de nitr\u00f3geno atmosf\u00e9rico, presentes en la ra\u00edz, tallos y hojas de esta planta. Xanthomonas albilineans es tambi\u00e9n una bacteria end\u00f3fita obligada, no diazotrofa y pat\u00f3gena, causante de la principal enfermedad vascular de ca\u00f1a denominada escaldadura foliar. El s\u00edntoma caracter\u00edstico de esta enfermedad es una l\u00ednea blanco-amarillenta siguiendo la direcci\u00f3n de las nervaduras principales de la hoja, de forma que la anchura de esta hoja puede aumentar y afectar a la hora completa, la cual se deseca y necrosa. En etapas avanzadas de la enfermedad, el microorganismo produce un exudado gomoso tipo xantano que obtura los haces vasculares. En los \u00faltimos a\u00f1os, numerosos grupos han investigado la posibilidad de la existencia de un control biol\u00f3gico de esta enfermedad. Del medio de cultivo de gluconacetobacter se ha aislado una fracci\u00f3n proteica que muestra actividad inhibitoria del crecimiento de xanthomonas, demostr\u00e1ndose adem\u00e1s que esta fracci\u00f3n proteica contiene una prote\u00edna glicosilada con actividad lisozina, probablemente responsable de la acci\u00f3n biol\u00f3gica frente al pat\u00f3geno. por primera vez, esta lisozima se ha purificado y caracterizado bioqu\u00edmicamente a partir d educativos l\u00edquidos de gluconacetobacter de once d\u00edas (tiempo estimado como el de mayor producci\u00f3n), obteni\u00e9ndose una glicoprote\u00edna con un peso molecular de aproximadamente 11 kda, cuya temperatura y ph \u00f3ptimos en reacic\u00f3n se corresponde con valores de 22\u00c2\u00bac y 8, respect<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Posible control biol\u00f3gico de la escaldadura foliar en ca\u00f1a de az\u00facar<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Posible control biol\u00f3gico de la escaldadura foliar en ca\u00f1a de az\u00facar <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Yolanda Blanco L\u00f3pez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/09\/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>Carlos Vicente C\u00f3rdoba<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Legaz gonz\u00e1lez Mar\u00eda estrella <\/li>\n<li>ildefonso Bonilla mangas (vocal)<\/li>\n<li>carmen Lluch pla (vocal)<\/li>\n<li>marcedes Mart\u00edn pedrosa (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Yolanda Blanco L\u00f3pez En la agricultura, los dos tipos de cultivos m\u00e1s importantes mundialmente son las gram\u00edneas [&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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