{"id":16369,"date":"2010-05-18T00:00:00","date_gmt":"2010-05-18T04:00:00","guid":{"rendered":"http:\/\/www.farmchemicalsinternational.com\/2010\/05\/18\/biocontrol-agent-to-use-aphid-chemicals\/"},"modified":"2014-11-21T15:53:30","modified_gmt":"2014-11-21T20:53:30","slug":"biocontrol-agent-to-use-aphid-chemicals","status":"publish","type":"post","link":"https:\/\/www.agribusinessglobal.com\/pt\/agrochemicals\/insecticides\/biocontrol-agent-to-use-aphid-chemicals\/","title":{"rendered":"Agente de biocontrole para usar produtos qu\u00edmicos de pulg\u00f5es"},"content":{"rendered":"

COLLEGE STATION, Texas, EUA \u2014 Servi\u00e7o de Pesquisa Agr\u00edcola (ARS<\/a>) cientistas da Centro de Pesquisa Agr\u00edcola das Plan\u00edcies do Sul <\/a>est\u00e3o examinando a bioqu\u00edmica dos pulg\u00f5es com o objetivo de desenvolver um agente de biocontrole para as pragas. Os pulg\u00f5es t\u00eam mostrado sinais de desenvolvimento de alguma resist\u00eancia a inseticidas aos agroqu\u00edmicos comumente usados para combat\u00ea-los, criando uma necessidade de m\u00e9todos alternativos de prote\u00e7\u00e3o de cultivos.<\/p>\n

O projeto trabalha com neuropept\u00eddeos \u2014 sinais qu\u00edmicos que controlam e regulam uma ampla gama de fun\u00e7\u00f5es corporais, como digest\u00e3o, respira\u00e7\u00e3o, ingest\u00e3o de \u00e1gua e excre\u00e7\u00f5es. Quando o neuropept\u00eddeo \u00e9 quebrado pelas enzimas do corpo, o efeito desencadeado pelo sinal qu\u00edmico \u00e9 desligado. Os imitadores de neuropept\u00eddeos, ou an\u00e1logos, que a equipe de pesquisa est\u00e1 desenvolvendo t\u00eam estruturas moleculares ligeiramente alteradas que n\u00e3o se quebram quando atacadas por enzimas. O objetivo \u00e9 matar a praga interrompendo suas fun\u00e7\u00f5es biol\u00f3gicas.<\/p>\n

Em um estudo publicado recentemente na revista Pept\u00eddeos<\/a><\/em>, cientistas trabalhando no projeto descobriram que uma formula\u00e7\u00e3o matou 90% a 100% de pulg\u00f5es em sua amostra de teste em tr\u00eas dias, a uma taxa e pot\u00eancia compar\u00e1veis aos inseticidas agora no mercado. Enquanto os an\u00e1logos de neuropept\u00eddeos est\u00e3o atualmente sendo testados e avaliados, os pesquisadores dizem que as estruturas moleculares das cininas de insetos (a classe de neuropept\u00eddeos que est\u00e1 sendo estudada) s\u00e3o t\u00e3o \u00fanicas que um agente de biocontrole formulado a partir delas provavelmente n\u00e3o ter\u00e1 qualquer efeito em humanos, plantas ou outros tipos de organismos.
 <\/p>","protected":false},"excerpt":{"rendered":"

COLLEGE STATION, Texas, EUA \u2014 Cientistas do Servi\u00e7o de Pesquisa Agr\u00edcola (ARS) do Centro de Pesquisa Agr\u00edcola das Plan\u00edcies do Sul est\u00e3o examinando\u2026<\/p>","protected":false},"author":110,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":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":[20],"tags":[117],"class_list":["post-16369","post","type-post","status-publish","format-standard","hentry","category-insecticides","tag-biocontrols"],"yoast_head":"\nBiocontrol Agent To Use Aphid Chemicals - 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