{"id":49715,"date":"2025-10-20T17:30:12","date_gmt":"2025-10-20T15:30:12","guid":{"rendered":"https:\/\/ellipse.prbb.org\/?p=49715"},"modified":"2025-10-20T17:30:39","modified_gmt":"2025-10-20T15:30:39","slug":"adaptacions-al-canvi-climatic-la-resiliencia-dun-corall-amb-una-dieta-flexible","status":"publish","type":"post","link":"https:\/\/ellipse.prbb.org\/ca\/adaptacions-al-canvi-climatic-la-resiliencia-dun-corall-amb-una-dieta-flexible\/","title":{"rendered":"Adaptacions al canvi clim\u00e0tic: la resili\u00e8ncia d\u2019un corall amb una dieta flexible"},"content":{"rendered":"\n

Un projecte <\/a>liderat per Arnau Seb\u00e9 Pedr\u00f3s<\/a><\/strong> al Centre de Regulaci\u00f3 Gen\u00f2mica (CRG)<\/a> ha mostrat els mecanismes gen\u00e8tics i cel\u00b7lulars que expliquen com el corall petri <\/strong>(d\u2019esquelet dur) Oculina patagonica<\/strong><\/em> \u00e9s capa\u00e7 d\u2019alimentar-se tant amb algues com sense<\/strong>, adaptant-se aix\u00ed a la vida en un alt ventall de temperatures.<\/p>\n\n\n\n

Originari de la Mediterr\u00e0nia, aquest corall <\/a>s\u2019alimenta generalment a trav\u00e9s d\u2019una relaci\u00f3 simbi\u00f2tica amb algues fotosint\u00e8tiques<\/strong>. Per\u00f2 quan les temperatures pugen m\u00e9s enll\u00e0 dels 29 \u00baC, expulsa les algues<\/strong>. Per\u00f2, a difer\u00e8ncia d\u2019altres coralls, per als qui aix\u00f2 \u00e9s letal, \u00e9s capa\u00e7 de sobreviure el temps suficient per recuperar les algues quan les aig\u00fces es refreden a la tardor.<\/p>\n\n\n\n

Per entendre aquesta resili\u00e8ncia <\/strong>a nivell molecular, els investigadors i investigadores van seq\u00fcenciar el genoma de l’Oculina patagonica<\/em> i van analitzar desenes de milers de c\u00e8l\u00b7lules individuals per determinar quins gens s’activen quan l’animal mar\u00ed cont\u00e9 o no algues simbi\u00f2tiques. A m\u00e9s, van crear atles cel\u00b7lulars d\u2019altres dos coralls tropicals<\/a> que depenen per complet de les algues, per fer una comparaci\u00f3 directa entre esp\u00e8cies. <\/p>\n\n\n\n

Aix\u00ed, van descobrir que, quan les algues desapareixen, l’Oculina<\/em> reajusta els seus programes cel\u00b7lulars<\/strong> i, entre d\u2019altres coses, expandeix les seves c\u00e8l\u00b7lules glandulars i digestives per poder capturar i digerir part\u00edcules directament de l’aigua<\/strong>. <\/p>\n\n\n\n

\u201cAquesta capacitat de sobreviure sense les algues \u00e9s un enorme avantatge en un Mediterrani transformat per l’activitat humana, i una de les raons per les quals decid\u00edrem estudiar aquesta esp\u00e8cie\u00bb, explica el doctor Xavier Grau Bov\u00e9<\/strong>, coautor de l’estudi i investigador postdoctoral al CRG. <\/p>\n\n\n\n

En ser un mar, les aig\u00fces de la Mediterr\u00e0nia experimenten variacions m\u00e9s brusques de temperatura, salinitat i aportacions de nutrients que l’oce\u00e0 obert.<\/strong>  \u00abEls coralls i altres organismes que viuen aqu\u00ed ja afronten fluctuacions extremes, per la qual cosa el Mediterrani ens ofereix una esp\u00e8cie d’avan\u00e7 de com podria desenvolupar-se la vida marina sota un canvi clim\u00e0tic<\/a> accelerat\u00bb,  afirma la doctora Shani Levy<\/strong>, primera autora de l’estudi. <\/p>\n\n\n\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

Un estudi del CRG ofereix una visi\u00f3 \u00fanica sobre la forma en qu\u00e8 les esp\u00e8cies marines estan adaptant-se al canvi clim\u00e0tic. L\u2019estudi ha combinat la seq\u00fcenciaci\u00f3 del genoma amb an\u00e0lisi de c\u00e8l\u00b7lules individuals.<\/p>\n","protected":false},"author":6,"featured_media":49711,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[297,920,848,265],"new-type":[35],"class_list":["post-49715","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recerca","tag-biologia-molecular","tag-calor","tag-canvi-climatic","tag-crg-ca","new-type-noticies"],"acf":[],"_links":{"self":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/49715","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/comments?post=49715"}],"version-history":[{"count":4,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/49715\/revisions"}],"predecessor-version":[{"id":49719,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/49715\/revisions\/49719"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media\/49711"}],"wp:attachment":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media?parent=49715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/categories?post=49715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/tags?post=49715"},{"taxonomy":"new-type","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/new-type?post=49715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}