{"id":36149,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/senescencia-de-nodulos-de-leguminosas-inducida-por-nitrato-y-oscuridad-continua\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"senescencia-de-nodulos-de-leguminosas-inducida-por-nitrato-y-oscuridad-continua","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/senescencia-de-nodulos-de-leguminosas-inducida-por-nitrato-y-oscuridad-continua\/","title":{"rendered":"Senescencia de nodulos de leguminosas inducida por nitrato y oscuridad continua."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Escuredo Garcia De Galdeano Pedro <\/strong><\/h2>\n<p>Se han estudiado los efectos del nitrato y la oscuridad continua, por separado, en n\u00f3dulos de jud\u00eda y guisante.  el tratamiento de ambas plantas con nitrato 10 mm inhibe la actividad nitrogenasa en un 85% y retienen virtualmente intacta su capacidad defensiva antioxidante tras 2 d\u00edas de exposici\u00f3n al nitrato, sin embargo, en los n\u00f3dulos tratados durante 4 d\u00edas con nitrato se produce una importante disminuci\u00f3n de antioxidantes y se acumulan prote\u00ednas modificadas oxidativamente.  la exposici\u00f3n de plantas de guisante y jud\u00eda a 1 d\u00eda de oscuridad causa una inhibici\u00f3n del 96% en la actividad fijadora de nitrogeno. En judia esta inhibici\u00f3n es debida a una limitaci\u00f3n dr\u00e1stica del aporte de sacarosa a las c\u00e9lulas infectadas y, consecuentemente de sustratos respiratorios a los bacteroides.  la exposici\u00f3n a 2 d\u00edas de oscuridad provoca una ca\u00edda moderada de los antioxidantes de los n\u00f3dulos que se intensifica a los cuatro d\u00edas.  la ascorbato peroxidasa se localiza principalmente en el parenquima modular y en la zona infectada. La inmunolocalizaci\u00f3n de este enzima por microscop\u00eda electr\u00f3nica indica que el enzima se encuentra principalmente en el citosol de las c\u00e9lulas infectadas de los n\u00f3dulos.  los trioles de glutation y homoglutation pueden separarse de manera sensible y cuantificarse. Se ha demostrado que la estimaci\u00f3n del da\u00f1o oxidativo a las prote\u00ednas nodulares es un indicador de estr\u00e9s oxidativo m\u00e1s sensible y adecuado que la peroxidaci\u00f3n de lipidos.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Senescencia de nodulos de leguminosas inducida por nitrato y oscuridad continua.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Senescencia de nodulos de leguminosas inducida por nitrato y oscuridad continua. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Escuredo Garcia De Galdeano Pedro <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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 Becana Ausejo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Pedro Aparicio Tejo <\/li>\n<li>Jos\u00e9 Olivares Pascual (vocal)<\/li>\n<li>Tom\u00e1s Ruiz De Argueso (vocal)<\/li>\n<li>Carlos Gomez-moreno Calera (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Escuredo Garcia De Galdeano Pedro Se han estudiado los efectos del nitrato y la oscuridad continua, por [&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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