{"id":16080,"date":"2018-03-09T09:03:32","date_gmt":"2018-03-09T09:03:32","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/diseno-y-caracterizacion-de-peptidos-antifungicos-frente-a-fitopatogenos-aplicacion-a-la-conservacion-postcosecha\/"},"modified":"2018-03-09T09:03:32","modified_gmt":"2018-03-09T09:03:32","slug":"diseno-y-caracterizacion-de-peptidos-antifungicos-frente-a-fitopatogenos-aplicacion-a-la-conservacion-postcosecha","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/diseno-y-caracterizacion-de-peptidos-antifungicos-frente-a-fitopatogenos-aplicacion-a-la-conservacion-postcosecha\/","title":{"rendered":"Dise\u00f1o y caracterizacion de peptidos antifungicos frente a fitopatogenos. aplicaci\u00f3n a la conservacion postcosecha."},"content":{"rendered":"<h2>Tesis doctoral de <strong> M. Belen Lopez Garcia <\/strong><\/h2>\n<p>Los hongos fitopat\u00f3genos causan enfermedades que afectan a la calidad y seguridad de los alimentos de origen vegetal. Su control se realiza fundamentalmente mediante la aplicaci\u00f3n de fungicidas, aunque existen varios inconvenientes a su utilizaci\u00f3n como son los riesgos para la salud humana y el medio ambiente derivados de su toxicidad, un limitado espectro de acci\u00f3n y la aparici\u00f3n de cepas resistentes. En nuestro laboratorio se trabaja en la busqueda de estrategias alternativas eficaces y\/o compuestos m\u00e1s seguros para el control de las podredumbres producidas por hongos durantela postcosecha de frutos vegetales. Se ha utilizado la quimica combinatoria en la identificaci\u00f3n de nuevos compuestos antif\u00fangicos. Se analiz\u00f3 una biblioteca combinatoria soluble de hexap\u00e9ptidos sintetizada con los esterois\u00f3meros d de los amin\u00f3acidos naturales, con el objeto de identificar p\u00e9ptidos que inhibieran in vitro el crecimiento de penicillium digitatum, el principal pat\u00f3geno postcosecha de citricos. En este trabajo se han caracterizado un grupo de p\u00e9pticos, paf19,paf26,paf32 y paf34, con actividad in vitro frente a hongos fitopatogenos, entre los que destacan p.Digitatum, p.Italicum, p.Expansum, botrytis cinereal, alternaria sp. Y fusarium oxysporum. Paf19, paf26 y paf32 tienen toxicidad nula o muy reducida frente a e.Coli, s.Cerevisiae, y distintas levaduras identificadas por nuestro grupo como agentes de biocontrol. P\u00e9ptidos diferenciados en uno o dos residuos de amino\u00e1cidos tienen distintos perfiles de actividad, lo que sugiere la existencia de un componente de especificidad en su mecanismo de acci\u00f3n. Este mecanismo estar\u00eda mediado por una interacci\u00f3n electrost\u00e1tica y se manifiesta con la inhibici\u00f3n de la germinaci\u00f3n de los conidios y la permeabilizaci\u00f3n de las membranas celulares de p.Digitatum. Todos los datos sobre el modo de accion son consistentes con un mecanismo del tipo efecto alfombra. Mediante experimentos de dicroismo circ<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Dise\u00f1o y caracterizacion de peptidos antifungicos frente a fitopatogenos. aplicaci\u00f3n a la conservacion postcosecha.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Dise\u00f1o y caracterizacion de peptidos antifungicos frente a fitopatogenos. aplicaci\u00f3n a la conservacion postcosecha. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 M. Belen Lopez Garcia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Universitat de val\u00e9ncia (estudi general)<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 15\/03\/2002<\/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> Marcos Lopez Jos\u00e9 Francisco<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: francisca Reig isart <\/li>\n<li>Luis Gonz\u00e1lez candelas (vocal)<\/li>\n<li>pedro Carrasco sorl\u00ed (vocal)<\/li>\n<li>Antonio Molina fern\u00e1ndez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de M. Belen Lopez Garcia Los hongos fitopat\u00f3genos causan enfermedades que afectan a la calidad y seguridad de [&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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[160,494,332,36579,5220,7840,969,17,1594],"tags":[16430,33679,50975,50974,42834,50976],"class_list":["post-16080","post","type-post","status-publish","format-standard","hentry","category-bioquimica","category-ciencias-agrarias","category-ciencias-tecnologicas","category-conservacion-postrecoleccion","category-fitopatologia-agricola","category-hongos","category-peptidos","category-quimica","category-tecnologia-de-los-alimentos","tag-antonio-molina-fernandez","tag-francisca-reig-isart","tag-luis-gonzalez-candelas","tag-m-belen-lopez-garcia","tag-marcos-lopez-jose-francisco","tag-pedro-carrasco-sorli"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/16080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=16080"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/16080\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=16080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=16080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=16080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}