{"id":66086,"date":"2008-09-07T00:00:00","date_gmt":"2008-09-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-de-las-ligninas-de-helechos-y-estudio-de-sus-relaciones-filogeneticas-con-otras-plantas-vasculares-terrestres\/"},"modified":"2008-09-07T00:00:00","modified_gmt":"2008-09-07T00:00:00","slug":"caracterizacion-de-las-ligninas-de-helechos-y-estudio-de-sus-relaciones-filogeneticas-con-otras-plantas-vasculares-terrestres","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisiologia-vegetal\/caracterizacion-de-las-ligninas-de-helechos-y-estudio-de-sus-relaciones-filogeneticas-con-otras-plantas-vasculares-terrestres\/","title":{"rendered":"Caracterizaci\u00f3n de las ligninas de helechos y estudio de sus relaciones filogen\u00e9ticas con otras plantas vasculares terrestres"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Manuel Espi\u00f1eira Lliobre <\/strong><\/h2>\n<p>Se estudi\u00f3 el proceso de lignificaci\u00f3n y de producci\u00f3n de peroxidasas en especies muy alejadas desde el punto de vista filogen\u00e9tico. se confirm\u00f3 la coincidencia de los patrones de distribuci\u00f3n histoqu\u00edmica de la peroxidasa con los de deposici\u00f3n de ligninas en isoetes fluitans, isoetes histrix, selaginella martensii, equisetum telmateia, phyllitis scolopendrium y pteridium aquilinum. Al mismo tiempo, se pudo comprobar la evoluci\u00f3n y diversificaci\u00f3n de los haces vasculares, desde cordones vasculares centrales a eustelas m\u00e1s evolucionadas. las especies estudiadas: mastocarpus stellatus, cystoseira baccata, ulva rigida, marchantia polymorpha, physcomitrella patens, s. Martensii, i. Fluitans, i. Histrix, e. Telmateia, ceratopteris thalictroides, ceratoptheris cornuta, p. Scolopendrium, dryoptris affinis, p. Aquilinum y posidonia oce\u00e1nica, pertenecientes a grupos muy alejados evolutivamente: algas, hep\u00e1ticas, bri\u00f3fitos, lic\u00f3fitos, esfen\u00f3fitos, filic\u00f3fitos y angiospermas marinas; disponen de peroxidasas capaces de oxidar monolignoles que participan en el proceso de lignificaci\u00f3n. Algunas de ellas (m. Polymorpha, p. Patens, s. Martensii e i. Histrix) presentan patrones isoenzim\u00e1ticos con la isoenzima b\u00e1sica de la angiosperma zinnia elegans empleada como modelo para el estudio de la lignificaci\u00f3n. todas las especies estudiadas, con excepci\u00f3n de las algas y el musgo p. Patens, contienen ligninas. Los an\u00e1lisis de las mismas, realizados por medio de tioacidolisis y nbo, reflejan que mayoritariamente contienen residuos procedentes del alcohol conifer\u00edlico. Las ligninas de algunas especies basales como m. Polymorpha, s. Matensii, i. Histrix y c. Cornuta contienen tambien residuos procedentes del alcohol sinap\u00edlico, t\u00edpicos de las ligninas de angiospermas. Las ligninas de las especies estudiadas tienen ligninas de tipo g, t\u00edpicas de ginmospermas, a excepci\u00f3n de la angiosperma marina p. Oceanica, que tienen ligninas t\u00edpicas de angiospermas, y de c. Cornuta que contiene niveles parecidos de unidades g y s.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n de las ligninas de helechos y estudio de sus relaciones filogen\u00e9ticas con otras plantas vasculares terrestres<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n de las ligninas de helechos y estudio de sus relaciones filogen\u00e9ticas con otras plantas vasculares terrestres <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Manuel Espi\u00f1eira Lliobre <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 A coru\u00f1a<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 09\/07\/2008<\/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>Mar\u00eda  De Los Angeles Bernal Pita Da Veiga<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: fuencisla Merino de caceres <\/li>\n<li>anton Masa vazquez (vocal)<\/li>\n<li>Jos\u00e9 Antonio Hernandez cortes (vocal)<\/li>\n<li>laura vanessa Gomez ros (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Manuel Espi\u00f1eira Lliobre Se estudi\u00f3 el proceso de lignificaci\u00f3n y de producci\u00f3n de peroxidasas en especies [&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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