{"id":85336,"date":"2026-10-06T07:00:00","date_gmt":"2026-10-06T06:00:00","guid":{"rendered":"https:\/\/museoscienze.vda.it\/?p=85336"},"modified":"2026-09-30T12:09:19","modified_gmt":"2026-09-30T11:09:19","slug":"derriere-les-vitrines-du-musee-de-saint-pierre","status":"publish","type":"post","link":"https:\/\/museoscienze.vda.it\/fr\/derriere-les-vitrines-du-musee-de-saint-pierre\/","title":{"rendered":"Derri\u00e8re les vitrines du Mus\u00e9e de Saint-Pierre"},"content":{"rendered":"\n<p class=\"has-medium-font-size\"><em>DNA barcoding, banque de germoplasme v\u00e9g\u00e9tal, microscopie: le Mus\u00e9e r\u00e9gional des sciences naturelles Efisio Noussan n&rsquo;est pas seulement un lieu de conservation des collections, mais un centre de recherche actif sur le territoire vald\u00f4tain.<\/em><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-medium-font-size\">Les visiteurs du Mus\u00e9e r\u00e9gional des sciences naturelles Efisio Noussan de Saint-Pierre arpentent seize salles qui racontent la nature vald\u00f4taine \u00e0 travers des collections, des dioramas, des sp\u00e9cimens naturalis\u00e9s et des supports multim\u00e9dias. C&rsquo;est un parcours qui m\u00e8ne de la g\u00e9ologie des Alpes aux \u00e9cosyst\u00e8mes aquatiques, des for\u00eats nocturnes aux glaciers, de la tradition mini\u00e8re \u00e0 la biodiversit\u00e9 des prairies d&rsquo;altitude. Un mus\u00e9e en apparence classique, comme on s&rsquo;attend \u00e0 ce qu&rsquo;un mus\u00e9e le soit.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Ce que la plupart des visiteurs ne voient pas, c&rsquo;est ce qui se passe au-del\u00e0 des salles d&rsquo;exposition.<\/p>\n\n\n\n<div style=\"height:61px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-dark-1-color has-text-color has-link-color wp-elements-c09c2350de60fac578be9f65961b278d\" style=\"font-size:30px\"><strong>Un centre de recherche actif<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Le Mus\u00e9e r\u00e9gional de Sciences Naturelles Efisio Noussan n&rsquo;est pas seulement un lieu o\u00f9 l&rsquo;on conserve et expose des collections naturalistes. C&rsquo;est aussi une institution scientifique dot\u00e9e de ses propres laboratoires, de chercheurs permanents et de projets de recherche actifs sur le territoire vald\u00f4tain. Laboratoires \u00e0 la pointe de la technologie travaillent chaque jour sur des sujets allant de l&rsquo;analyse g\u00e9n\u00e9tique des esp\u00e8ces animales \u00e0 la conservation du patrimoine v\u00e9g\u00e9tal.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Il s&rsquo;agit d&rsquo;une dimension du Mus\u00e9e peu connue du grand public, qui associe souvent les mus\u00e9es d&rsquo;histoire naturelle exclusivement \u00e0 leur fonction d&rsquo;exposition. En r\u00e9alit\u00e9, la s\u00e9paration entre collections et recherche n&rsquo;est jamais exist\u00e9e dans l&rsquo;histoire des mus\u00e9es de sciences naturelles : les collections sont n\u00e9es de la recherche sur le terrain, et la recherche continue de s&rsquo;alimenter des collections en tant qu&rsquo;archives historiques de la biodiversit\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-dark-1-color has-text-color has-link-color wp-elements-f22c1a55e0b6e4a0f4febed49f748bb3\" style=\"font-size:30px\"><strong>Le laboratoire de biotechnologies : lire l&rsquo;ADN du territoire<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Le laboratoire de biotechnologies, sp\u00e9cialis\u00e9 dans le s\u00e9quencage de l&rsquo;ADN et les analyses de biologie mol\u00e9culaire. Gr\u00e2ce \u00e0 un s\u00e9quenceur capillaire et aux techniques du DNA barcoding, le laboratoire est en mesure d&rsquo;identifier avec pr\u00e9cision une esp\u00e8ce animale, v\u00e9g\u00e9tale ou fongique \u00e0 partir d&rsquo;un \u00e9chantillon biologique pr\u00e9lev\u00e9 de mani\u00e8re non invasive sur le terrain : un poil, une feuille, une crotte ou un \u00e9chantillon de sol.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Le laboratoire est structur\u00e9 en trois zones physiquement s\u00e9par\u00e9es, d\u00e9finies selon le risque de contamination par l&rsquo;ADN : la <strong>NO DNA AREA<\/strong>, o\u00f9 les m\u00e9langes r\u00e9actionnels sont pr\u00e9par\u00e9s en r\u00e9duisant au minimum le risque de contamination ; la <strong>LOW DNA AREA<\/strong>, o\u00f9 les \u00e9chantillons sont enregistr\u00e9s et l&rsquo;ADN extrait ; et la <strong>HIGH DNA AREA<\/strong>, o\u00f9 l&rsquo;ADN est amplifi\u00e9, s\u00e9quenc\u00e9 et analys\u00e9. La s\u00e9paration physique n&rsquo;est pas une question formelle, mais une exigence n\u00e9cessaire pour produire des r\u00e9sultats scientifiquement fiables.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Les applications vont du suivi g\u00e9n\u00e9tique non invasif de la faune sauvage vald\u00f4taine, y compris le loup, \u00e0 la caract\u00e9risation g\u00e9n\u00e9tique de populations d&rsquo;esp\u00e8ces v\u00e9g\u00e9tales sauvages rares et prot\u00e9g\u00e9es, jusqu&rsquo;au d\u00e9veloppement de protocoles de tra\u00e7abilit\u00e9 pour les produits agroalimentaires locaux.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-dark-1-color has-text-color has-link-color wp-elements-62f29c92befc6ce5955e1e067d38fc8d\" style=\"font-size:30px\"><strong>La Banque de Germoplasme : conserver l&rsquo;avenir de la flore alpine<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Le Mus\u00e9e accueille \u00e9galement la Banque de germoplasme v\u00e9g\u00e9tal de la Vall\u00e9e d&rsquo;Aoste, un v\u00e9ritable document d&rsquo;archives o\u00f9 sont conserv\u00e9s plus d&rsquo;un million de graines, de spores  appartenant \u00e0 environ 80 esp\u00e8ces v\u00e9g\u00e9tales sauvages vald\u00f4taines. Certaines de ces esp\u00e8ces sont rares, d&rsquo;autres sont menac\u00e9es par le changement climatique ou la perte d&rsquo;habitat : la Banque garantit leur conservation <em>ex situ<\/em> (en dehors de leur habitat naturel) pour d&rsquo;\u00e9ventuelles futures op\u00e9rations de r\u00e9introduction ou de renforcement dans la nature, au cas o\u00f9 l&rsquo;esp\u00e8ce risquerait de dispara\u00eetre \u00e0 l&rsquo;\u00e9tat sauvage.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">La Banque n&rsquo;est pas un d\u00e9p\u00f4t statique. Le personnel effectue r\u00e9guli\u00e8rement des tests de germination pour v\u00e9rifier la viabilit\u00e9 du mat\u00e9riel conserv\u00e9, et les plantules issues des op\u00e9rations de r\u00e9g\u00e9n\u00e9ration sont destin\u00e9es \u00e0 \u00eatre r\u00e9introduites dans les jardins botaniques alpins de la Vall\u00e9e d&rsquo;Aoste. Depuis 2017, la Banque fait partie du RIBES, le R\u00e9seau italien des banques de germoplasme pour la conservation <em>ex situ<\/em> de la flore sauvage italienne.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-57d61863fc1a35385ffe1fc61fa921c7\" style=\"font-size:30px\"><strong>Le secteur abiologique : les min\u00e9raux au microscope<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Les laboratoires du Mus\u00e9e sont \u00e9galement \u00e9quip\u00e9s d&rsquo;un microscope optique avec polariseur en lumi\u00e8re transmise, aussi appel\u00e9 microscope p\u00e9trographique, pour l&rsquo;analyse des sp\u00e9cimens min\u00e9ralogiques. Contrairement aux microscopes biologiques classiques, cet instrument utilise la lumi\u00e8re polaris\u00e9e pour r\u00e9v\u00e9ler les propri\u00e9t\u00e9s optiques des min\u00e9raux : en nicols crois\u00e9s, chaque min\u00e9ral produit une combinaison caract\u00e9ristique de couleurs et de comportements optiques qui permet son identification pr\u00e9cise.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Pour observer une roche au microscope p\u00e9trographique, il faut d&rsquo;abord la transformer en une lame mince : une lame de roche r\u00e9duite \u00e0 seulement 30 microm\u00e8tres d&rsquo;\u00e9paisseur, soit environ un tiers du diam\u00e8tre d&rsquo;un cheveu humain, qui devient translucide \u00e0 cette finesse et r\u00e9v\u00e8le ses propri\u00e9t\u00e9s optiques. C&rsquo;est la m\u00eame technique utilis\u00e9e par les g\u00e9ologues du monde entier pour analyser la composition des roches alpines ; au Mus\u00e9e , elle est appliqu\u00e9e \u00e0 l&rsquo;\u00e9tude des min\u00e9raux vald\u00f4tains et \u00e0 l&rsquo;identification des pi\u00e8ces des collections.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-black-color has-text-color has-link-color wp-elements-916afb927723a4efcc27939e510c6b97\" style=\"font-size:30px\"><strong>Un mus\u00e9e tourn\u00e9 vers l&rsquo;avenir<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Les laboratoires du Mus\u00e9e repr\u00e9sentent la dimension la moins visible, mais non la moins importante de l&rsquo;institution : celle qui transforme des archives de la nature en un lieu o\u00f9 la connaissance du territoire se produit activement, au quotidien. Les collections expos\u00e9es dans les salles racontent la nature vald\u00f4taine telle qu&rsquo;elle \u00e9tait et telle qu&rsquo;elle est. Les laboratoires travaillent pour comprendre comment elle \u00e9volue et comment la prot\u00e9ger.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Dans les prochaines semaines, la rubrique \u00ab Laboratoires \u00bb les pr\u00e9sentera plus en d\u00e9tail, un par un, avec les aspects techniques, les projets en cours et les personnes qui y travaillent.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DNA barcoding, banque de germoplasme v\u00e9g\u00e9tal, microscopie: le Mus\u00e9e r\u00e9gional des sciences naturelles Efisio Noussan n&rsquo;est pas seulement un lieu de conservation des collections, mais un centre de recherche actif sur le territoire vald\u00f4tain. Les visiteurs du Mus\u00e9e r\u00e9gional des sciences naturelles Efisio Noussan de Saint-Pierre arpentent seize salles qui racontent la nature vald\u00f4taine \u00e0 &hellip; <a href=\"https:\/\/museoscienze.vda.it\/fr\/derriere-les-vitrines-du-musee-de-saint-pierre\/\">Leggi di pi\u00f9<\/a><\/p>\n","protected":false},"author":11,"featured_media":85339,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[52,53],"tags":[17561,18057,17909,17907,17819,17985,17537,17556,17818,17799,17806,17849],"news_category":[17513,17514],"news_expert":[],"news_type":[17520],"class_list":["post-85336","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-homepage-fr","category-news-fr","tag-dna-fr","tag-laboratoire","tag-minerali-fr","tag-minerali","tag-musee","tag-musee-de-sciences-naturelles","tag-museo","tag-museo-fr","tag-recherche","tag-ricerca","tag-ricerca-fr","tag-valle-daosta","news_category-musee","news_category-recherche","news_type-approfondissement"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Derri\u00e8re les vitrines du Mus\u00e9e de Saint-Pierre - Museo Regionale di Scienze Naturali Efisio Noussan<\/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:\/\/museoscienze.vda.it\/?p=85334\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Derri\u00e8re les vitrines du Mus\u00e9e de Saint-Pierre - Museo Regionale di Scienze Naturali Efisio Noussan\" \/>\n<meta property=\"og:description\" content=\"DNA barcoding, banque de germoplasme v\u00e9g\u00e9tal, microscopie: le Mus\u00e9e r\u00e9gional des sciences naturelles Efisio Noussan n&rsquo;est pas seulement un lieu de conservation des collections, mais un centre de recherche actif sur le territoire vald\u00f4tain. Les visiteurs du Mus\u00e9e r\u00e9gional des sciences naturelles Efisio Noussan de Saint-Pierre arpentent seize salles qui racontent la nature vald\u00f4taine \u00e0 &hellip; Leggi di pi\u00f9\" \/>\n<meta property=\"og:url\" content=\"https:\/\/museoscienze.vda.it\/?p=85334\" \/>\n<meta property=\"og:site_name\" content=\"Museo Regionale di Scienze Naturali Efisio Noussan\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-06T06:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/museoscienze.vda.it\/wp-content\/uploads\/2026\/09\/MuseoScienzeNaturali_68.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2500\" \/>\n\t<meta property=\"og:image:height\" content=\"1668\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Valery Lombard\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Valery Lombard\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/museoscienze.vda.it\/?p=85334#article\",\"isPartOf\":{\"@id\":\"https:\/\/museoscienze.vda.it\/?p=85334\"},\"author\":{\"name\":\"Valery Lombard\",\"@id\":\"https:\/\/museoscienze.vda.it\/#\/schema\/person\/911dc81afb8c931559d10d6d21f01a30\"},\"headline\":\"Derri\u00e8re les vitrines du Mus\u00e9e de Saint-Pierre\",\"datePublished\":\"2026-10-06T06:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/museoscienze.vda.it\/?p=85334\"},\"wordCount\":1060,\"publisher\":{\"@id\":\"https:\/\/museoscienze.vda.it\/#organization\"},\"image\":{\"@id\":\"https:\/\/museoscienze.vda.it\/?p=85334#primaryimage\"},\"thumbnailUrl\":\"https:\/\/museoscienze.vda.it\/wp-content\/uploads\/2026\/09\/MuseoScienzeNaturali_68.jpg\",\"keywords\":[\"ADN\",\"laboratoire\",\"minerali\",\"minerali\",\"mus\u00e9e\",\"mus\u00e9e de Sciences naturelles\",\"Museo\",\"Museo\",\"recherche\",\"ricerca\",\"ricerca\",\"Valle d'Aosta\"],\"articleSection\":[\"homepage\",\"news\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/museoscienze.vda.it\/?p=85334\",\"url\":\"https:\/\/museoscienze.vda.it\/?p=85334\",\"name\":\"Derri\u00e8re les vitrines du Mus\u00e9e de Saint-Pierre - 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