{"id":100794,"date":"2010-10-05T00:00:00","date_gmt":"2010-10-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estrategias-para-la-utilizacion-de-la-bacteria-entomopatogena-bacillus-thuringiensis-berliner-en-el-control-de-ceratitis-capitata-wiedemann\/"},"modified":"2010-10-05T00:00:00","modified_gmt":"2010-10-05T00:00:00","slug":"estrategias-para-la-utilizacion-de-la-bacteria-entomopatogena-bacillus-thuringiensis-berliner-en-el-control-de-ceratitis-capitata-wiedemann","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/politecnica-de-valencia\/estrategias-para-la-utilizacion-de-la-bacteria-entomopatogena-bacillus-thuringiensis-berliner-en-el-control-de-ceratitis-capitata-wiedemann\/","title":{"rendered":"Estrategias para la utilizaci\u00f3n de la bacteria entomopat\u00f3gena bacillus thuringiensis (berliner) en el control de ceratitis capitata (wiedemann)"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Cristian Vidal Quist <\/strong><\/h2>\n<p>La mosca mediterr\u00e1nea de la fruta, ceratitis capitata, es una de las principales plagas de la fruticultura en el mundo. El desarrollo de m\u00e9todos ambientalmente seguros de control de plagas, como los basados en bacillus thuringiensis (bt), adquiere cada vez mayor importancia. Esta tesis doctoral eval\u00faa la validez de bt y sus delta-endotoxinas como agentes de control de c. Capitata. El an\u00e1lisis de la biodiversidad de bt ha reflejado la gran riqueza presente en el agroecosistema de los c\u00edtricos. Sin embargo, ninguna de las cepas ensayadas (905) muestr\u00f3 alta toxicidad sobre c. Capitata cuando esporas\/cristales o sobrenadantes de su cultivo fueron ensayados. En cambio, la solubilizaci\u00f3n de los cristales de una selecci\u00f3n de 42 cepas de bacillus sp. Ha demostrado que, para las cepas de la subespecie israelensis (bti), este tratamiento produce una ganancia de funci\u00f3n biol\u00f3gica. Adicionalmente, la predigesti\u00f3n de dichas protoxinas con proteasas de otro d\u00edptero, culex pipiens, aumenta su actividad larvicida (cl50 31.26 \u00c2\u00b5g\/cm2). Por otro lado, se ha demostrado que, entre las delta-endotoxinas producidas por bti, la protoxina cyt1aa es el factor determinante, con una cl50 sobre larvas de 4.93 \u00c2\u00b5g\/cm2. Sobre adultos, cyt1aa produce efectos subletales. Complementariamente, esta tesis propone un nuevo m\u00e9todo con un gran potencial en el control de plagas, que est\u00e1 basado en el desarrollo de toxinas recombinantes de fusi\u00f3n cry-anticuerpo. Se ha puesto en pr\u00e1ctica un sistema modelo para evaluar esta estrategia: se han desarrollado 4 variantes proteicas por la fusi\u00f3n entre partes de la protoxina cry1ab y un anticuerpo espec\u00edfico contra gfp (vhh anti-gfp) y \u00e9stas se han ensayado sobre larvas transg\u00e9nicas de drosophila melanogaster que expresan gfp en su intestino (sistema gal4-uas). Deficiencias en la uni\u00f3n de las toxinas de fusi\u00f3n a gfp, han impedido demostrar, por el momento, la estrategia propuesta. Por \u00faltimo, se han detectado al menos 160 prote\u00ednas distintas en las membranas intestinales de c. Capitata y se han identificado las siguientes: v-atpasa subunidades a y b, y alfa-tubulina.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estrategias para la utilizaci\u00f3n de la bacteria entomopat\u00f3gena bacillus thuringiensis (berliner) en el control de ceratitis capitata (wiedemann)<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estrategias para la utilizaci\u00f3n de la bacteria entomopat\u00f3gena bacillus thuringiensis (berliner) en el control de ceratitis capitata (wiedemann) <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Cristian Vidal Quist <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 10\/05\/2010<\/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>Pedro Casta\u00f1era Dominguez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan Ferre manzanero <\/li>\n<li>f\u00e9lix Ortego alonso (vocal)<\/li>\n<li>salvador Herrero sendra (vocal)<\/li>\n<li>Alberto Urbaneja Garc\u00eda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Cristian Vidal Quist La mosca mediterr\u00e1nea de la fruta, ceratitis capitata, es una de las principales [&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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