{"id":4553,"date":"1994-01-01T00:00:00","date_gmt":"1994-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1994\/01\/01\/toxicidad-del-cobre-sobre-la-diatomea-marina-phaeodactylum-tricornutum-bohlin\/"},"modified":"1994-01-01T00:00:00","modified_gmt":"1994-01-01T00:00:00","slug":"toxicidad-del-cobre-sobre-la-diatomea-marina-phaeodactylum-tricornutum-bohlin","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/toxicidad-del-cobre-sobre-la-diatomea-marina-phaeodactylum-tricornutum-bohlin\/","title":{"rendered":"Toxicidad del cobre sobre la diatomea marina phaeodactylum tricornutum bohlin"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Angeles Cid Blanco <\/strong><\/h2>\n<p>En este trabajo hemos analizado la respuesta fisiologica de la diatomea marina phaeodactylum tricornutum frente a concentraciones subletales de cobre. Nuestros resultados indican que la toxicidad del cobre sobre el crecimiento de esta diatomea es funcion de la densidad celular inicial utilizada en el ensayo. El cobre afecta al metabolismo fotosintetico de esta diatomea, inhibiendo la incorporacion de 14c-bicarbonato, disminuyendo el contenido intracelular de atp, alterando el patron de pigmentos y provocando un aumento de la fluorescencia de la clorofila a, indicando la existencia de un bloqueo del transporte electronico en el psii.  la citometria de flujo es una tecnica valida para los estudios de toxicidad de metales pesados en microalgas, permitiendo obtener datos acerca del efecto a nivel estructural y fisiologico. El cobre produce un aumento del volumen celular de esta diatomea, la perdida de la integridad de la membrana, aumenta el ph intracelular y la actividad peroxidasa. Tambien se producen alteraciones en el potencial de membrana citoplasmatica y mitocondrial. La mayor parte del cobre retirado por estas celulas esta adsorbido a su pared. El zinc es antagonico al cobre, disminuye su toxicidad.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Toxicidad del cobre sobre la diatomea marina phaeodactylum tricornutum bohlin<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Toxicidad del cobre sobre la diatomea marina phaeodactylum tricornutum bohlin <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Angeles Cid Blanco <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 A coru\u00f1a<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1994<\/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>Concepci\u00f3n Herrero Lopez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Tom\u00e1s Gonz\u00e1lez Villa <\/li>\n<li>Oscar Garc\u00eda Mart\u00edn (vocal)<\/li>\n<li>Miguel Garcia Guerrero (vocal)<\/li>\n<li>Manuel Varela Rodriguez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Angeles Cid Blanco En este trabajo hemos analizado la respuesta fisiologica de la diatomea marina phaeodactylum tricornutum [&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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