{"id":10332,"date":"2019-08-30T11:32:59","date_gmt":"2019-08-30T14:32:59","guid":{"rendered":"https:\/\/blog.mindthegraph.com\/?p=10332"},"modified":"2022-10-18T08:23:55","modified_gmt":"2022-10-18T11:23:55","slug":"underground-network-keeps-rainforests","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/pt\/redes-subterraneas-mantenedoras-de-florestas-tropicais\/","title":{"rendered":"A rede subterr\u00e2nea que mant\u00e9m vivas as florestas tropicais"},"content":{"rendered":"<p style=\"text-align: justify;\">Podemos ver a imensid\u00e3o das florestas tropicais olhando as fotos das copas das \u00e1rvores tiradas por zang\u00f5es. Mas para sustentar toda esta vida existe uma teia subterr\u00e2nea, que n\u00e3o vemos e muitas pessoas n\u00e3o conhecem. Sim, eu estou falando de fungos micorr\u00edzicos. Mesmo para os cientistas, estes aspectos da vida permanecem em sua maioria desconhecidos.<\/p>\n<p style=\"text-align: justify;\">Em 2019, os pesquisadores acabaram de mapear pela primeira vez o\u00a0<a href=\"https:\/\/doi.org\/10.1038\/s41586-019-1128-0\" target=\"_blank\" rel=\"noopener\">distribui\u00e7\u00e3o global de tr\u00eas grandes grupos<\/a>\u00a0desses micr\u00f3bios. Os autores <em>\"gerar um mapa global espacialmente expl\u00edcito do estado simbi\u00f3tico das florestas, utilizando um banco de dados de mais de 1,1 milh\u00f5es de parcelas de invent\u00e1rio florestal que, coletivamente, cont\u00eam mais de 28.000 esp\u00e9cies de \u00e1rvores\".<\/em><\/p>\n<p style=\"text-align: justify;\">Os dois tipos s\u00e3o diferenciados pelo fato de que as hifas dos fungos ectomicorr\u00edzicos n\u00e3o penetram nas c\u00e9lulas individuais dentro da raiz, enquanto as hifas dos fungos endomicorr\u00edzicos penetram na parede celular e invaginam a membrana celular.<\/p>\n<p style=\"text-align: justify;\">As endomicorrizas dominam em florestas tropicais quentes e sazonais. A simbiose entre plantas e microorganismos tamb\u00e9m \u00e9 muito importante para as plantas em climas sazonalmente frios e secos.  \u00c9 a forma predominante de simbiose em altas latitudes e eleva\u00e7\u00f5es.<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/mindthegraph.com\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10342\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2019\/08\/ectomycorrhizae.png\" alt=\"ectomycorrhizae\" width=\"760\" height=\"400\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2019\/08\/ectomycorrhizae.png 760w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2019\/08\/ectomycorrhizae-300x158.png 300w\" sizes=\"(max-width: 760px) 100vw, 760px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">O gigante\u00a0<em>Armillaria solidipes<\/em>\u00a0(cogumelo mel\u00edfero) \u00e9 considerado o maior organismo da Terra, espalhando-se por mais de 2.000 acres de solo subterr\u00e2neo no leste do Oregon; estima-se que tenha pelo menos 2.400 anos de idade.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/usercontent1.hubstatic.com\/14253532_f520.jpg\" alt=\"Resultado de imagem para Armillaria solidipes maior\" \/><\/p>\n<h3 style=\"text-align: center;\"><strong>\u00a0N\u00e3o fique com a id\u00e9ia errada. Os Fungos n\u00e3o s\u00e3o acess\u00f3rios passivos para as plantas. Eles s\u00e3o poderosos e din\u00e2micos.<\/strong><\/h3>\n<p style=\"text-align: justify;\">Eles podem obter os nutrientes que as plantas precisam do solo. Isto significa f\u00f3sforo, especialmente, mas tamb\u00e9m nitrog\u00eanio. Al\u00e9m disso, h\u00e1 evid\u00eancias de que os micr\u00f3bios tamb\u00e9m ajudam as plantas a ter acesso \u00e0 \u00e1gua do solo. Portanto, com esta enorme import\u00e2ncia para a manuten\u00e7\u00e3o da vida, precisamos saber mais sobre eles do que sabemos neste momento. No entanto, os micr\u00f3bios s\u00e3o, naturalmente, microsc\u00f3picos vivendo sob o solo enquanto h\u00e1 milh\u00f5es de plantas e animais coloridos e vibrantes para ver.<\/p>\n<p style=\"text-align: justify;\">Al\u00e9m disso, n\u00e3o h\u00e1 um tema f\u00e1cil de ser estudado: algumas esp\u00e9cies n\u00e3o crescem no laborat\u00f3rio. Al\u00e9m disso, a rede se rompe facilmente quando tentamos extrair do solo. Algumas delas n\u00e3o possuem 'c\u00e9lulas', seus n\u00facleos com DNA s\u00e3o compartilhados entre c\u00e9lulas, criando redes que podem ter quil\u00f4metros de comprimento. Voc\u00ea pode concordar comigo que existem muitas desculpas para nossa falta de conhecimento sobre fungos micorr\u00edzicos.<\/p>\n<h3 style=\"text-align: justify;\"><strong>Mas cerca de 80% das plantas terrestres atuais formam parcerias com fungos; ainda outras plantas formam parcerias com bact\u00e9rias.<\/strong><\/h3>\n<p style=\"text-align: justify;\">E, sabe, ningu\u00e9m disse que ser cientista seria f\u00e1cil.<\/p>\n<p style=\"text-align: justify;\">A <a href=\"https:\/\/www.cell.com\/current-biology\/fulltext\/S0960-9822(19)30490-7\" target=\"_blank\" rel=\"noopener\">novo artigo publicado em junho<\/a> traz uma nova luz para a quest\u00e3o. Matthew Whiteside e seus colegas tornam poss\u00edvel a visualiza\u00e7\u00e3o do invis\u00edvel. Eles\u00a0<em>desenvolveu uma t\u00e9cnica de rastreamento de nutrientes quantum-dot que nos permitiu rastrear o com\u00e9rcio de f\u00f3sforo fluorescentemente rotulado na parceria comercial mais difundida do mundo: o mutualismo entre os fungos micorr\u00edzicos arbusculares e as plantas terrestres.\u00a0<\/em><em>Ao marcar o f\u00f3sforo com nanopart\u00edculas altamente fluorescentes de diferentes cores, poder\u00edamos acompanhar o movimento dos recursos desde seus pontos de origem, atrav\u00e9s de um fungo, at\u00e9 a raiz do hospedeiro.<\/em><\/p>\n<p style=\"text-align: justify;\">O fungo mobiliza e coleta o f\u00f3sforo do solo e comercializa esta mercadoria com suas plantas hospedeiras para a produ\u00e7\u00e3o de carbono em uma troca semelhante \u00e0 do mercado. Os autores queriam ver como os fungos respondem aos diferentes n\u00edveis de desigualdade de recursos. Este estudo tem evid\u00eancias de que os fungos n\u00e3o s\u00e3o apenas comerciantes passivos de nutrientes, mas processadores de informa\u00e7\u00e3o.<\/p>\n<p style=\"text-align: justify;\">A Revista Quanta publicou um completo e interessante <a href=\"https:\/\/www.quantamagazine.org\/soils-microbial-market-shows-the-ruthless-side-of-forests-20190827\/\" target=\"_blank\" rel=\"noopener\">artigo<\/a>\u00a0sobre isso. O autor \u00e9 Gabriel Popkin. Deixe-me dar-lhe um spoiler do artigo:\u00a0<em>\"o que realmente distingue o mundo f\u00fangico \u00e9 sua diversidade e complexidade\". Uma colher cheia de solo cont\u00e9m mais indiv\u00edduos microbianos do que os humanos na Terra. \"\u00c9 o habitat mais denso de esp\u00e9cies que temos\", disse Edith Hammer, ecologista de solo da Universidade de Lund, na Su\u00e9cia. Uma \u00fanica planta pode estar trocando mol\u00e9culas com dezenas de fungos - cada um dos quais, por sua vez, pode ser canoodling com um n\u00famero igual de plantas. \u00c9 uma festa prom\u00edscua l\u00e1 embaixo\".<\/em><\/p>\n<p style=\"text-align: justify;\">No fant\u00e1stico v\u00eddeo abaixo voc\u00ea pode assistir \u00e0 transmiss\u00e3o de materiais atrav\u00e9s de hifas f\u00fangicas vivas. A dire\u00e7\u00e3o do fluxo muda porque o fungo redireciona o fluxo de nutrientes, aparentemente estrategicamente, em resposta \u00e0s condi\u00e7\u00f5es ambientais. O v\u00eddeo \u00e9 uma cortesia de Cortesia de Toby Kiers para o canal Quanta Magazine:<\/p>\n<p><center><iframe loading=\"lazy\" title=\"Fluxo Hif\u00e1lico\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/E_Cy7KkwmWU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p><\/center><\/p>\n<p style=\"text-align: justify;\">Conhecendo a import\u00e2ncia do assunto, criamos v\u00e1rias ilustra\u00e7\u00f5es de fungos. Portanto, se voc\u00ea quiser explicar aos seus alunos, colegas ou amigos, voc\u00ea pode us\u00e1-los!<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/mindthegraph.com\/templates\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10345\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2019\/08\/preview_118301.png\" alt=\"preview_118301\" width=\"640\" height=\"480\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2019\/08\/preview_118301.png 640w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2019\/08\/preview_118301-300x225.png 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/mindthegraph.com\/templates\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-10346\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2019\/08\/preview_118302.png\" alt=\"preview_118302\" width=\"640\" height=\"480\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2019\/08\/preview_118302.png 640w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2019\/08\/preview_118302-300x225.png 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Ent\u00e3o, vamos melhorar juntos a comunica\u00e7\u00e3o na ci\u00eancia! Voc\u00ea est\u00e1 pronto para tentar?<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/mindthegraph.com\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-6577\" src=\"https:\/\/blog.mindthegraph.com\/wp-content\/uploads\/2017\/01\/start_get-mind-the-graph-medical-illustrations.png\" alt=\"aten\u00e7\u00e3o \u00e0s ilustra\u00e7\u00f5es cient\u00edficas gr\u00e1ficas\" width=\"310\" height=\"100\" srcset=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2017\/01\/start_get-mind-the-graph-medical-illustrations.png 310w, https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2017\/01\/start_get-mind-the-graph-medical-illustrations-300x97.png 300w\" sizes=\"(max-width: 310px) 100vw, 310px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Podemos ver a imensid\u00e3o das florestas tropicais olhando as fotos das copas das \u00e1rvores tiradas por zang\u00f5es. Mas para sustentar toda esta vida existe uma teia subterr\u00e2nea, que n\u00e3o vemos e muitas pessoas n\u00e3o conhecem. Sim, eu estou falando de fungos micorr\u00edzicos. Mesmo para os cientistas, estes aspectos da vida permanecem em sua maioria desconhecidos. [\u2026]<\/p>","protected":false},"author":11,"featured_media":10349,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":[],"categories":[959,28],"tags":[345,302,219,346,554,775,342],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The underground network that keeps rainforests alive - Mind the Graph Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/pt\/underjordisk-nettverk-bevarer-regnskogen\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The underground network that keeps rainforests alive - Mind the Graph Blog\" \/>\n<meta property=\"og:description\" content=\"We can see the immensity of rainforests looking at pictures of the tree tops take by drones. But to sustain all this life there is an underground web, that we don&#8217;t see and many people don&#8217;t know about. Yes, I am talking about mycorrhizal fungi. Even for scientists these aspects of life remains mostly unknown. 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But to sustain all this life there is an underground web, that we don&#8217;t see and many people don&#8217;t know about. Yes, I am talking about mycorrhizal fungi. Even for scientists these aspects of life remains mostly unknown. 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