{"id":1716,"date":"2025-04-24T19:08:16","date_gmt":"2025-04-24T17:08:16","guid":{"rendered":"https:\/\/pedagogie.ac-lille.fr\/svt\/?p=1716"},"modified":"2025-04-24T19:09:06","modified_gmt":"2025-04-24T17:09:06","slug":"olympiades-nationales-de-biologie-lacademie-lille-vice-championne","status":"publish","type":"post","link":"https:\/\/pedagogie.ac-lille.fr\/svt\/olympiades-nationales-de-biologie-lacademie-lille-vice-championne\/","title":{"rendered":"Olympiades nationales de biologie : l&rsquo;acad\u00e9mie de Lille, vice-championne !"},"content":{"rendered":"\n<p>Notre \u00e9quipe acad\u00e9mique obtient une tr\u00e8s belle seconde place aux Olympiades Nationales de Biologie.<\/p>\n\n\n\n<p>Camille, Chlo\u00e9, Michelle et Zeyneb du lyc\u00e9e Henri Wallon \u00e0 Valenciennes sont donc vice-championnes de France de biologie 2025 devant 29 autres \u00e9quipes repr\u00e9sentant l\u2019ensemble des acad\u00e9mies et des lyc\u00e9es fran\u00e7ais \u00e0 l\u2019\u00e9tranger.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025-1024x576.jpg\" alt=\"\" class=\"wp-image-1717\" srcset=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025-1024x576.jpg 1024w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025-300x169.jpg 300w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025-768x432.jpg 768w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025-1110x624.jpg 1110w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025-528x297.jpg 528w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2025\/04\/ONB_medaille_2025.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Leurs exp\u00e9rimentations sur le ver de Roscoff ont montr\u00e9 que le microbiote de ce petit animal marin influence la vitesse de ses d\u00e9placements.<\/p>\n\n\n\n<p>Xavier Bailly, chercheur \u00e0 la station biologique de Roscoff propose une hypoth\u00e8se&nbsp;\u00e0 ces r\u00e9sultats&nbsp;: \u00ab&nbsp;le ver produit un mucus externe qui facilite ses d\u00e9placements, notamment dans le sable. C\u2019est dans ce mucus que se d\u00e9veloppent des bact\u00e9ries sp\u00e9cifiques qui forment le microbiome du ver de Roscoff. Compte tenu de ces r\u00e9sultats, il est fort probable que certains produits du m\u00e9tabolisme des bact\u00e9ries augmentent la fluidit\u00e9 du mucus, favorisant ainsi les d\u00e9placements du ver. En supprimant le microbiote du ver gr\u00e2ce \u00e0 des antibiotiques, les filles ont emp\u00each\u00e9 la formation de ces produits m\u00e9taboliques, ce qui a sans doute eu pour effet d\u2019augmenter la viscosit\u00e9 du mucus et donc de ralentir les vers sans microbiote&nbsp;\u00bb.<\/p>\n\n\n\n<p>Pour d\u00e9couvrir en vid\u00e9o les travaux de recherche de notre \u00e9quipe acad\u00e9mique c\u2019est ici&nbsp;:&nbsp;<a href=\"https:\/\/www.youtube.com\/watch?v=Ff0QZhkFY50\">https:\/\/www.youtube.com\/watch?v=Ff0QZhkFY50<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Notre \u00e9quipe acad\u00e9mique obtient une tr\u00e8s belle seconde place aux Olympiades Nationales de Biologie. Camille, Chlo\u00e9, Michelle et Zeyneb du lyc\u00e9e Henri Wallon \u00e0 Valenciennes sont donc vice-championnes de France [&hellip;]<\/p>\n","protected":false},"author":50,"featured_media":1717,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,15],"tags":[],"class_list":{"0":"post-1716","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-actu","8":"category-article_une","9":"czr-hentry"},"publishpress_future_action":{"enabled":false,"date":"2026-05-04 00:04:50","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts\/1716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/comments?post=1716"}],"version-history":[{"count":2,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts\/1716\/revisions"}],"predecessor-version":[{"id":1719,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts\/1716\/revisions\/1719"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/media\/1717"}],"wp:attachment":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/media?parent=1716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/categories?post=1716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/tags?post=1716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}