{"id":40269,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/plasticidad-metabolica-y-funcional-de-la-peroxidasa-basica-de-la-vid-vitis-vinifera-l-cv-gamay-rouge\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"plasticidad-metabolica-y-funcional-de-la-peroxidasa-basica-de-la-vid-vitis-vinifera-l-cv-gamay-rouge","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/plasticidad-metabolica-y-funcional-de-la-peroxidasa-basica-de-la-vid-vitis-vinifera-l-cv-gamay-rouge\/","title":{"rendered":"Plasticidad metabolica y funcional de la peroxidasa basica de la vid (vitis vinifera l. cv. gamay rouge)."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Milagros Morales Urgel <\/strong><\/h2>\n<p>La actividad peroxidasa de los frutos de vid (variedad gamay rouge), recogidos durante el envero, se debe fundamentalmente a la presencia de una isoenzima b\u00e1sica denominada b5. Esta isoenzima de peroxidasa es casi exclusivamente la \u00fanica componente del polimorfismo enzim\u00e1tico de los frutos de vid y se expresa de forma diferencial durante el proceso de maduraci\u00f3n del fruto, principalmente en los tejidos hipod\u00e9rmicos. adem\u00e1s de localizarse en las vacuolas de las c\u00e9lulas hipod\u00e9rmicas del fruto, la isoenzima b5 tambi\u00e9n se localiza en las paredes celulares del xilema. El hecho de que esta enzima se encuentre co-localizada en las vacuolas y en las paredes celulares plantea una cuesti\u00f3n acerca de su plasticidad metab\u00f3lica en la oxidaci\u00f3n de sustratos fen\u00f3licos cuya disponibilidad esta condicionada por la localizaci\u00f3n espec\u00edfica en el tejido. Por ello, en esta tesis se han estudiado los par\u00e1metros cin\u00e9ticos de la isoenzima b5 de la peroxidasa de frutos de vid durante la oxidaci\u00f3n de uno de los alcoholes precursores de las ligninas (el alcohol conifer\u00edlico), as\u00ed como durante la oxidaci\u00f3n de los principales flavonoides de naturaleza vacuolar (quercetina, miricetina y sus glic\u00f3sidos) presentes en los frutos de vid.  la pared celular de las plantas contiene isoenzimas \u00e1cidas y b\u00e1sicas; sin embargo, hasta la fecha, no se conoce cual de estos grupos de isoenzimas es m\u00e1s eficaz en la oxidaci\u00f3n de los alcoholes cinam\u00edlicos precursores de ligninas. El an\u00e1lisis comparado de los par\u00e1metros cin\u00e9ticos de las isoenzimas \u00e1cidas con la isoenzima b\u00e1sica b5 durante la oxidaci\u00f3n del alcohol conifer\u00edlico mostr\u00f3 que las isoenzimas \u00e1cidas presentaban una mayor afinidad por el alcohol conifer\u00edlico mientras que las b\u00e1sicas manifestaban una mayor afinidad por el per\u00f3xido de hidr\u00f3geno, sin embargo las peroxidasas \u00e1cidas mostraron una mayor eficacia en la oxidaci\u00f3n del alcohol conifer\u00edlico que las peroxidasas b\u00e1sicas sug<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Plasticidad metabolica y funcional de la peroxidasa basica de la vid (vitis vinifera l. cv. gamay rouge).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Plasticidad metabolica y funcional de la peroxidasa basica de la vid (vitis vinifera l. cv. gamay rouge). <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Milagros Morales Urgel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/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>Alfonso Ros Barcelo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: romualdo Mu\u00f1oz giron <\/li>\n<li>Francisco Torrella mateu (vocal)<\/li>\n<li>claudine Balague (vocal)<\/li>\n<li>Juan Cuello moreno (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Milagros Morales Urgel La actividad peroxidasa de los frutos de vid (variedad gamay rouge), recogidos durante el 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