{"id":6125,"date":"2024-10-25T13:45:19","date_gmt":"2024-10-25T13:45:19","guid":{"rendered":"https:\/\/nantes.apbg.org\/?p=6125"},"modified":"2025-09-29T07:11:43","modified_gmt":"2025-09-29T07:11:43","slug":"mercredi-11-decembre-2024-visioconference-sur-les-transferts-horizontaux-de-genes","status":"publish","type":"post","link":"https:\/\/nantes.apbg.fr\/index.php\/2024\/10\/25\/mercredi-11-decembre-2024-visioconference-sur-les-transferts-horizontaux-de-genes\/","title":{"rendered":"Mercredi 11 d\u00e9cembre 2024 : visioconf\u00e9rence sur les transferts horizontaux de g\u00e8nes"},"content":{"rendered":"\n
\"\"<\/a><\/figure>\n\n\n\n

Mercredi 11 d\u00e9cembre 2025<\/strong>, le comit\u00e9 de la r\u00e9gionale de Nantes de l’APBG a organis\u00e9 une visioconf\u00e9rence intitul\u00e9e \u00ab\u00a0les voies cach\u00e9es de l’\u00e9volution, l’ADN sans fronti\u00e8re\u00a0\u00bb par Moaine El Baidouri<\/strong> CRN CNRS (HDR), membre du Comit\u00e9 National du CNRS (section 23), Laboratoire G\u00e9nome et D\u00e9veloppement des Plantes, UMR CNRS UPVD 5096, Universit\u00e9 de Perpignan.<\/p>\n\n\n\n

Quand l\u2019improbable n\u2019est pas impossible\u2026 Ou comment l\u2019ADN sans fronti\u00e8re entre les plantes participe \u00e0 leur \u00e9volution. En effet, gr\u00e2ce aux transferts horizontaux de s\u00e9quences d\u2019ADN (essentiellement des r\u00e9trotransposons), le patrimoine g\u00e9n\u00e9tique des esp\u00e8ces actuelles est le fruit des interactions dans un \u00e9cosyst\u00e8me. L\u2019analyse des s\u00e9quences d\u2019ADN entre diff\u00e9rentes esp\u00e8ces v\u00e9g\u00e9tales permet d\u2019identifier par ce biais les traces des interactions pass\u00e9es. Il ne faut donc plus consid\u00e9rer les \u00e9cosyst\u00e8mes uniquement selon la nature des \u00e9changes trophiques mais aussi selon les \u00e9changes g\u00e9n\u00e9tiques entre les esp\u00e8ces \u00e0 l’origine de l’enrichissement des g\u00e9nomes et donc du vivant.<\/p>\n\n\n\n

Se pose alors la question de la pr\u00e9servation des \u00e9cosyst\u00e8mes.<\/p>\n\n\n\n

Cliquer pour acc\u00e9der \u00e0 la vid\u00e9o de la conf\u00e9rence<\/strong>.<\/a><\/p>\n\n\n\n

\n
\"\"<\/a>
Ces transferts horizontaux sont relativement anciens (estim\u00e9s entre 1 \u00e0 3Ma) car pour les observer, il faut le temps qu’ils soient fix\u00e9s dans une population.<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Transfert horizontal = transfert d’une technologie pr\u00eate \u00e0 l’emploi d’une esp\u00e8ce voisine \u00e0 une autre lui conf\u00e9rant la possibilit\u00e9 d’acqu\u00e9rir une nouvelle niche \u00e9cologique. Avantage s\u00e9lectif.<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Un \u00e9cosyst\u00e8me o\u00f9, par leurs interactions, ces esp\u00e8ces ont la possibilit\u00e9 improbable de transf\u00e9rer de l’ADN.<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

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

Mercredi 11 d\u00e9cembre 2025, le comit\u00e9 de la r\u00e9gionale de Nantes de l’APBG a organis\u00e9 une visioconf\u00e9rence intitul\u00e9e \u00ab\u00a0les voies<\/p>\n","protected":false},"author":1,"featured_media":6905,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[5],"tags":[],"class_list":["post-6125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conference"],"_links":{"self":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/6125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/comments?post=6125"}],"version-history":[{"count":1,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/6125\/revisions"}],"predecessor-version":[{"id":6917,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/posts\/6125\/revisions\/6917"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media\/6905"}],"wp:attachment":[{"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/media?parent=6125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/categories?post=6125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nantes.apbg.fr\/index.php\/wp-json\/wp\/v2\/tags?post=6125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}