{"id":10417,"date":"2008-11-04T00:00:00","date_gmt":"2008-11-04T05:00:00","guid":{"rendered":"http:\/\/www.farmchemicalsinternational.com\/2008\/11\/04\/biologists-discover-plants-natural-defenses\/"},"modified":"2019-09-16T13:50:00","modified_gmt":"2019-09-16T17:50:00","slug":"biologists-discover-plants-natural-defenses","status":"publish","type":"post","link":"https:\/\/www.agribusinessglobal.com\/es\/markets\/biologists-discover-plants-natural-defenses\/","title":{"rendered":"Los bi\u00f3logos descubren las defensas naturales de las plantas"},"content":{"rendered":"<p>Eric Schmelz, fisi\u00f3logo vegetal con el <a target=\"_blank\" href=\"http:\/\/www.usda.gov\/\" rel=\"noopener noreferrer\">Departamento de Agricultura de EE. UU.<\/a> (USDA), dice que la mejor manera de proteger los cultivos es averiguar c\u00f3mo se protegen a s\u00ed mismos. Los bi\u00f3logos de plantas del Centro de Entomolog\u00eda M\u00e9dica, Agr\u00edcola y Veterinaria del USDA en Gainesville, Florida, han identificado la estrategia y los medios por los cuales las plantas reconocen un ataque, informa <a target=\"_blank\" href=\"http:\/\/www.sciencedaily.com\/\" rel=\"noopener noreferrer\">Ciencia diaria<\/a>. Los cient\u00edficos del USDA pasaron tres a\u00f1os analizando la respuesta bioqu\u00edmica del caup\u00ed, un tipo de leguminosa favorecida por un insecto conocido como gusano cogollero. Llevaron a cabo m\u00e1s de 10.000 bioensayos de hojas e identificaron una clase espec\u00edfica de &quot;inductores&quot; de peque\u00f1os p\u00e9ptidos, o se\u00f1ales de defensa de las plantas que ayudan a las plantas a reaccionar al ataque de los insectos.<\/p>\n<p>La investigaci\u00f3n muestra que cuando los insectos ingieren partes de una planta, la digesti\u00f3n convierte las prote\u00ednas ya presentes en las plantas en un inductor de p\u00e9ptidos, que se secreta nuevamente en la planta durante las alimentaciones posteriores. La planta reconoce este elicitor y lanza su qu\u00edmica defensiva en forma de toxinas o sustancias qu\u00edmicas vol\u00e1tiles. Un p\u00e9ptido de 11 amino\u00e1cidos llamado inceptin juega un papel de advertencia fundamental en las plantas de caup\u00ed bajo el ataque de gusanos soldados. Los investigadores del USDA tambi\u00e9n identificaron dos fragmentos de p\u00e9ptidos relacionados pero menos abundantes que provocan respuestas de defensa similares en el caup\u00ed, y un tercero sin efecto aparente. Tambi\u00e9n demostraron que la inceptina y los p\u00e9ptidos relacionados provocan una cascada de aumentos de fitohormonas en el caup\u00ed para activar sus defensas, e identificaron caracter\u00edsticas cr\u00edticas de la estructura de la prote\u00edna que le permiten funcionar como una se\u00f1al de defensa de la planta.<\/p>\n<p>&quot;Lo que estamos estudiando es c\u00f3mo las plantas est\u00e1n usando estos qu\u00edmicos para ayudar a defenderse&quot;, dijo Schmelz. Al reaccionar a los productos qu\u00edmicos secretados por los jugos digestivos de un insecto, la planta libera olores para atraer a otros insectos y eliminar el problema. Las plantas reaccionan a cada ataque de manera diferente, emitiendo diferentes olores para atraer diferentes insectos y ayudar a defenderlos. &quot;Un peque\u00f1o mordisco de una oruga muy peque\u00f1a iniciar\u00e1 este proceso&quot;, explica Schmelz.<\/p>\n<p>Los investigadores esperan aprender m\u00e1s sobre los procesos qu\u00edmicos que utilizan las plantas para protegerse; eventualmente, su trabajo podr\u00eda conducir al desarrollo y manipulaci\u00f3n gen\u00e9tica de plantas con una mejor protecci\u00f3n contra las plagas. &quot;Si podemos tener una planta que est\u00e1 produciendo una reacci\u00f3n defensiva m\u00e1s fuerte una vez que se mastica, esa plaga puede que ya no sea un problema&quot;, dijo Schmelz.<\/p>","protected":false},"excerpt":{"rendered":"<p>Eric Schmelz, fisi\u00f3logo de plantas del Departamento de Agricultura de EE. UU. (USDA), dice que la mejor manera de proteger los cultivos es\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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[5],"tags":[],"class_list":["post-10417","post","type-post","status-publish","format-standard","hentry","category-markets"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Biologists Discover Plants&#039; Natural Defenses - AgriBusiness Global<\/title>\n<meta name=\"description\" content=\"Eric Schmelz, plant physiologist with the US Department of Agriculture (USDA), says the best way to protect crops is to figure out how they protect\" \/>\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\/markets\/biologists-discover-plants-natural-defenses\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Biologists Discover Plants&#039; 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