{"id":13795,"date":"2009-03-23T00:00:00","date_gmt":"2009-03-23T04:00:00","guid":{"rendered":"http:\/\/www.farmchemicalsinternational.com\/2009\/03\/23\/new-green-fungicides-use-plants-natural-defenses\/"},"modified":"2019-09-16T13:47:28","modified_gmt":"2019-09-16T17:47:28","slug":"new-green-fungicides-use-plants-natural-defenses","status":"publish","type":"post","link":"https:\/\/www.agribusinessglobal.com\/es\/industry-news\/new-green-fungicides-use-plants-natural-defenses\/","title":{"rendered":"Nuevos fungicidas "verdes" utilizan las defensas naturales de las plantas"},"content":{"rendered":"

Los cient\u00edficos canadienses presentar\u00e1n una nueva clase de fungicidas "verdes" el 23 de marzo en Salt Lake City, Utah, en la 237\u00aa Reuni\u00f3n Nacional de la americano
Sociedad Qu\u00edmica<\/a>, informes Ciencia diaria<\/a>. Los nuevos fungicidas explotan una estrategia \u00fanica de defensa de las plantas para interrumpir una v\u00eda de se\u00f1alizaci\u00f3n qu\u00edmica clave utilizada por los hongos para romper las defensas normales de una planta. Las plantas aumentan sus defensas naturales y superan el ataque de hongos, dicen los
investigadores, cuyo estudio fue financiado por El Consejo de Investigaci\u00f3n de Ciencias Naturales e Ingenier\u00eda de Canad\u00e1 <\/a>y el Universidad de Saskatchewan<\/a>.<\/p>\n

Los nuevos fungicidas, llamados \u201cpaldoxinas\u201d, se desarrollaron pensando en la agricultura sostenible, reemplazando a los pesticidas convencionales y ayudando a combatir el creciente problema de la resistencia. Los nuevos fungicidas detienen selectivamente los hongos que causan enfermedades de las plantas sin da\u00f1ar a otros organismos ni causar efectos ambientales adversos, dicen los investigadores. Se pueden aplicar como plaguicidas convencionales.<\/p>\n

"Los fungicidas convencionales matan constantemente", explica la l\u00edder del estudio Soledade Pedras, Ph.D., profesora de qu\u00edmica en la Universidad de Saskatchewan. \u201cNuestros productos solo atacan al hongo cuando se porta mal o ataca la planta. Y por esa raz\u00f3n, son mucho m\u00e1s seguros ".<\/p>\n

Las plantas tienen un mecanismo de defensa que implica la producci\u00f3n de sustancias qu\u00edmicas naturales llamadas fitoalexinas para matar los hongos que causan enfermedades. Al contraatacar, el hongo libera enzimas que desintoxican o destruyen la fitoalexina, dejando a la planta vulnerable al ataque de los hongos. Pedras y sus colegas propusieron el desarrollo de nuevos agentes antif\u00fangicos para bloquear la destrucci\u00f3n de fitoalexinas por parte de los hongos. Llamaron a estos nuevos agentes paldoxinas, abreviatura de fitoalexina.
inhibidores de la desintoxicaci\u00f3n.<\/p>\n

\u201cDescubrimos que muchos hongos no pod\u00edan degradar este qu\u00edmico\u201d, dice Pedras. "As\u00ed que eso es lo que usamos para dise\u00f1ar versiones sint\u00e9ticas que eran incluso m\u00e1s fuertes que el original".<\/p>\n

Los investigadores ahora han desarrollado seis versiones sint\u00e9ticas diferentes de las paldoxinas, que Pedras dice que podr\u00edan comercializarse en unos pocos a\u00f1os.<\/p>","protected":false},"excerpt":{"rendered":"

Cient\u00edficos canadienses presentar\u00e1n una nueva clase de fungicidas \u201cverdes\u201d el 23 de marzo en Salt Lake City, Utah, en la 237.\u00aa\u2026<\/p>","protected":false},"author":110,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[489],"tags":[],"class_list":["post-13795","post","type-post","status-publish","format-standard","hentry","category-industry-news"],"yoast_head":"\nNew "Green" Fungicides Use Plants' Natural Defenses - AgriBusiness Global<\/title>\n<meta name=\"description\" content=\"Canadian scientists will present a new class of "green" fungicides March 23 in Salt Lake City, Utah, at the 237th National Meeting of the American\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agribusinessglobal.com\/es\/industry-news\/new-green-fungicides-use-plants-natural-defenses\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New "Green" Fungicides Use Plants' Natural Defenses - 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