{"id":12778,"date":"2026-09-17T09:52:12","date_gmt":"2026-09-17T07:52:12","guid":{"rendered":"https:\/\/www.imbe.fr\/?p=12778"},"modified":"2026-09-17T09:54:40","modified_gmt":"2026-09-17T07:54:40","slug":"quand-la-genetique-vient-bousculer-la-classification-des-romulees-mediterraneennes","status":"publish","type":"post","link":"https:\/\/www.imbe.fr\/fr\/quand-la-genetique-vient-bousculer-la-classification-des-romulees-mediterraneennes\/","title":{"rendered":"Quand la g\u00e9n\u00e9tique vient bousculer la classification des Romul\u00e9es m\u00e9diterran\u00e9ennes"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"12778\" class=\"elementor elementor-12778\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7c5ffd9 e-flex e-con-boxed e-con e-parent\" data-id=\"7c5ffd9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b5ff32b elementor-widget elementor-widget-text-editor\" data-id=\"b5ff32b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Comment identifier les esp\u00e8ces de Romul\u00e9es m\u00e9diterran\u00e9ennes lorsqu\u2019elles se ressemblent beaucoup ?<\/strong> C\u2019est la question \u00e0 laquelle se sont int\u00e9ress\u00e9s <a href=\"https:\/\/www.imbe.fr\/fr\/annuaire\/alex-baumel\/\">Alex Baumel<\/a> et ses collaborateurs, dans une \u00e9tude consacr\u00e9e aux Romul\u00e9es (<em>Romulea<\/em>) de la r\u00e9gion tyrrh\u00e9nienne.<\/p><p>Proches des Crocus et appartenant \u00e0 la famille des Iridac\u00e9es, les Romul\u00e9es m\u00e9diterran\u00e9ennes restent encore <strong>peu \u00e9tudi\u00e9es sur le plan g\u00e9n\u00e9tique<\/strong>. L\u2019objectif initial de l\u2019\u00e9tude \u00e9tait de mieux \u00e9valuer leur diversit\u00e9, de tester la classification actuelle des esp\u00e8ces et de retracer leur histoire \u00e9volutive.<\/p><p>Pour cela, les chercheurs ont analys\u00e9 <strong>353 g\u00e8nes nucl\u00e9aires<\/strong> gr\u00e2ce au s\u00e9quen\u00e7age haut d\u00e9bit, produisant une quantit\u00e9 consid\u00e9rable de donn\u00e9es g\u00e9n\u00e9tiques sur plusieurs centaines de Romul\u00e9es. Mais les r\u00e9sultats ont r\u00e9serv\u00e9 une surprise : <strong>les m\u00e9thodes phylog\u00e9n\u00e9tiques classiques se sont r\u00e9v\u00e9l\u00e9es largement inadapt\u00e9es \u00e0 ces donn\u00e9es<\/strong>.<\/p><p>Plut\u00f4t que d\u2019abandonner, les chercheurs ont d\u00e9velopp\u00e9 une <strong>approche originale de d\u00e9limitation des esp\u00e8ces<\/strong>, qui leur a permis d\u2019\u00e9valuer rigoureusement la diversit\u00e9 de <strong>18 taxons de la r\u00e9gion tyrrh\u00e9nienne<\/strong>.<\/p><p>Cette \u00e9tude constitue ainsi une premi\u00e8re avanc\u00e9e majeure dans l\u2019exploration g\u00e9n\u00e9tique des Romul\u00e9es m\u00e9diterran\u00e9ennes et ouvre de nouvelles pistes pour mieux comprendre leur <strong>diversification et leur histoire \u00e9volutive<\/strong>.<\/p><p>\ud83d\udc49 <strong>\u00c0 lire dans <\/strong><em><strong>PLOS ONE<\/strong><\/em> : <a href=\"https:\/\/doi.org\/10.1371\/journal.pone.0358245\" target=\"_blank\" rel=\"noopener\"><em>Molecular identification and diversity assessment of Tyrrhenian Romulea species (Iridaceae)<\/em><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47d45ca elementor-widget elementor-widget-image\" data-id=\"47d45ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"705\" height=\"1024\" src=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026-705x1024.jpg\" class=\"attachment-large size-large wp-image-12780\" alt=\"\" srcset=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026-705x1024.jpg 705w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026-207x300.jpg 207w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026-768x1115.jpg 768w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026-1058x1536.jpg 1058w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026-8x12.jpg 8w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2026\/09\/Alex-article-septembre-2026.jpg 1174w\" sizes=\"(max-width: 705px) 100vw, 705px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Comment identifier les esp\u00e8ces de Romul\u00e9es m\u00e9diterran\u00e9ennes lorsqu\u2019elles se ressemblent beaucoup ? C\u2019est la question \u00e0 laquelle se sont int\u00e9ress\u00e9s Alex Baumel et ses collaborateurs, dans une \u00e9tude consacr\u00e9e aux [&hellip;]<\/p>\n","protected":false},"author":300,"featured_media":12786,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-12778","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publication"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/posts\/12778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/users\/300"}],"replies":[{"embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/comments?post=12778"}],"version-history":[{"count":6,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/posts\/12778\/revisions"}],"predecessor-version":[{"id":12787,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/posts\/12778\/revisions\/12787"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/media\/12786"}],"wp:attachment":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/media?parent=12778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/categories?post=12778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/tags?post=12778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}