{"id":24025,"date":"2018-03-09T09:14:48","date_gmt":"2018-03-09T09:14:48","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-genetica-de-sistemas-de-transporte-de-peptidos-en-sinorhizobium-meliloti\/"},"modified":"2018-03-09T09:14:48","modified_gmt":"2018-03-09T09:14:48","slug":"caracterizacion-genetica-de-sistemas-de-transporte-de-peptidos-en-sinorhizobium-meliloti","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-genetica-de-sistemas-de-transporte-de-peptidos-en-sinorhizobium-meliloti\/","title":{"rendered":"Caracterizaci\u00f3n gen\u00e9tica de sistemas de transporte de p\u00e9ptidos en sinorhizobium meliloti"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Joaquina Nogales Diaz <\/strong><\/h2>\n<p>El proceso de formaci\u00f3n de la simbiosis rhizobium-leguminosa muestra similitudes con interacciones pat\u00f3geno-hospedador e implica un proceso de diferenciaci\u00f3n morfol\u00f3gica.  existen evidencias que sugieren que rhizobium desde el inicio de la interacci\u00f3n es reconocido por su leguminosa hospedadora como un organismo potencialmente pat\u00f3geno, y que la bacteria debe ser capaz de superar las reacciones de defensa de la planta. Parte de la inmunidad innata descrita en organismos superiores, plantas y animales, implica entre otras cosas la producci\u00f3n de sustancias antimicrobianas, generalmente de naturaleza pept\u00eddica. En este trabajo se ha estudiado la tolerancia de sinorhizobium meliloti al p\u00e9ptido antimicrobiano modelo, protamina. Se ha comprobado que esta tolerancia viene dada por una gran variedad de genes y mecanismos, de manera similar a lo observado en otras bacterias, como salmonella typhimurium, entre los que se incluyen la producci\u00f3n de exopolisac\u00e1rido l y beta-(1-2)-glucanos c\u00edclicos.  por otra parte, otras bacterias como bacillus subtilis o streptomyces coelicolor, afrontan en su ciclo de vida procesos de diferenciaci\u00f3n morfol\u00f3gica, que son desencadenados por mol\u00e9culas se\u00f1al que son importadas v\u00eda sistemas de transporte similares a la oligop\u00e9ptido permeasa (opp). Dado que rhizobium tambi\u00e9n sufre un proceso morfogen\u00e9tico del cual apenas se conoce nada, se ha estudiado tambi\u00e9n la posible implicaci\u00f3n del transporte de p\u00e9ptidos en la simbiosis s. Meliloti-alfalfa. Los resultados muestran la existencia de 4 operones que codifican para sistemas abc de transporte, implicados en la importancia de oligop\u00e9ptidos al citoplasma de s.Meliloti gr4, que solapan en especificidad. Adem\u00e1s, se ha evidenciado la existencia de sistemas de transporte de oligop\u00e9ptidos, adicionales a los identificados en este trabajo. Los distintos perfiles de expresi\u00f3n mostrados por cada uno de los transportadores estudiados, sugiere que la bacter<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n gen\u00e9tica de sistemas de transporte de p\u00e9ptidos en sinorhizobium meliloti<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n gen\u00e9tica de sistemas de transporte de p\u00e9ptidos en sinorhizobium meliloti <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Joaquina Nogales Diaz <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Granada<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 27\/06\/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>Juan SanJuan  Pinilla<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Arrese igor s\u00e1nchez c\u00e9sar <\/li>\n<li> Palacios alberti Jos\u00e9 Manuel (vocal)<\/li>\n<li>Jos\u00e9 enrique Ruiz sainz (vocal)<\/li>\n<li> Soto missfut Mar\u00eda  Jos\u00e9 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Joaquina Nogales Diaz El proceso de formaci\u00f3n de la simbiosis rhizobium-leguminosa muestra similitudes con interacciones pat\u00f3geno-hospedador e [&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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