{"id":86336,"date":"2018-03-10T00:10:54","date_gmt":"2018-03-10T00:10:54","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-de-los-genes-de-nodulacion-implicados-en-la-sulfatacion-de-la-molecula-senal-de-rhizobium-tropici-ciat899\/"},"modified":"2018-03-10T00:10:54","modified_gmt":"2018-03-10T00:10:54","slug":"analisis-de-los-genes-de-nodulacion-implicados-en-la-sulfatacion-de-la-molecula-senal-de-rhizobium-tropici-ciat899","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/analisis-de-los-genes-de-nodulacion-implicados-en-la-sulfatacion-de-la-molecula-senal-de-rhizobium-tropici-ciat899\/","title":{"rendered":"Analisis de los genes de nodulaci\u00f3n implicados en la sulfataci\u00f3n de la mol\u00e9cula se\u00f1al de rhizobium tropici ciat899"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Hamid Manyani <\/strong><\/h2>\n<p>R.Tropici ciat899 es un simbionte de amplio rango de hospedador capaz de producir nodulos fijadores de nitr\u00f3geno en numerosas leguminosas, y que se caracteriza tanto por ser muy tolerante a altas temperaturas como por mostrar un amplio espectro de tolerancia a ph \u00e1cidos y b\u00e1sicos. La interacci\u00f3n entre los rizobios y las leguminosas depende, en gran parte, del intercambio de se\u00f1ales qu\u00edmicas entre ambos simbiontes. Los estudios de la molecula se\u00f1al de esta cepa demostraron la presencia de 16 tipos de mol\u00e9culas diferentes, que podr\u00edan ser las responsables del amplio rango de hospedador que dicha cepa presenta.  el amplio rango de hospedador de dicha bacteria es debido a su gran espectro de factores nod. Esta bacteria contiene los genes responsables de la sulfataci\u00f3n, modificaci\u00f3n que controla la nodulaci\u00f3n en leucaena. en este trabajo se localizaron y se aislaron los genes nodhpq. Posteriormente, se estudio su organizaci\u00f3n y su modo de regulacion indicando que estos genes pertenecen el oper\u00f3n nodabcsuij, transcribi\u00e9ndose a partir de la caja de nodulaci\u00f3n localizada corriente arriba del gen noda. La expresi\u00f3n de dichos genes se realiza de un forma dependiente del gen regulador nodd1. por otro lado, el resto de las copias de este gen presentan un actividad debil o nula como es el caso de los genes nodd3 y nodd5, o podr\u00edan presentar otras actividades tales como la represi\u00f3n descrita en el caso del gen nodd2 de rhizobium sp. Ngr234.  los genes nodhpq podr\u00edan tambi\u00e9n presentar una expresi\u00f3n constitutiva independiente de la presencia de la presencia de los flavonoides. La doble promoci\u00f3n de los genes nodhpq podr\u00eda estar relacionada con la funci\u00f3n de dichos genes ya que cada uno de los dos promotores permitir\u00eda su expresi\u00f3n en las condiciones adecuadas. De este modo la caja de nodulaci\u00f3n controla su expresi\u00f3n en las condiciones simbi\u00f3ticas y la segunda zona promotora controla la expresi\u00f3n en otras condiciones a\u00fan d<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Analisis de los genes de nodulaci\u00f3n implicados en la sulfataci\u00f3n de la mol\u00e9cula se\u00f1al de rhizobium tropici ciat899<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Analisis de los genes de nodulaci\u00f3n implicados en la sulfataci\u00f3n de la mol\u00e9cula se\u00f1al de rhizobium tropici ciat899 <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Hamid Manyani <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Sevilla<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 14\/09\/2000<\/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>Manuel Meg\u00edas Guijo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Tom\u00e1s Ruiz De Argueso <\/li>\n<li>Martin Crespi (vocal)<\/li>\n<li>Miguel \u00e1ngel Caviedes Formento (vocal)<\/li>\n<li>Angel Cebolla Ramirez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Hamid Manyani R.Tropici ciat899 es un simbionte de amplio rango de hospedador capaz de producir nodulos fijadores [&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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