{"id":34419,"date":"2021-09-10T11:45:40","date_gmt":"2021-09-10T09:45:40","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/la-plasticite-phenotypique-influence-davantage-la-richesse-specifique-que-les-variations-genetiques\/"},"modified":"2021-09-10T11:45:40","modified_gmt":"2021-09-10T09:45:40","slug":"la-plasticite-phenotypique-influence-davantage-la-richesse-specifique-que-les-variations-genetiques","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/la-plasticite-phenotypique-influence-davantage-la-richesse-specifique-que-les-variations-genetiques\/","title":{"rendered":"La plasticit\u00e9 ph\u00e9notypique influence d\u2019avantage la richesse sp\u00e9cifique que les variations g\u00e9n\u00e9tiques"},"content":{"rendered":"<p>On distingue la plasticit\u00e9 ph\u00e9notypique (capacit\u00e9 des \u00eatres vivants \u00e0 d\u00e9velopper des caract\u00e8res morphologiques diff\u00e9rents \u00e0 partir d\u2019un m\u00eame g\u00e9notype pour mieux s\u2019adapter au changement de leur environnement) et la variation g\u00e9n\u00e9tique (indiquant le degr\u00e9 de variation g\u00e9notypique entre diff\u00e9rent individu d\u2019une m\u00eame population ou de populations diff\u00e9rentes).<br \/>\nLes auteurs mettent en \u00e9vidence que la part de l\u2019une et de l\u2019autre dans la structuration des bioc\u00e9noses (ensemble des organismes vivants pr\u00e9sents dans un biotope particulier) est peu document\u00e9e.<br \/>\nPour combler ces lacunes, ils ont mis en place une exp\u00e9rimentation pluriannuelle avec du Saule (Saule des dunes) dans un \u00e9cosyst\u00e8me c\u00f4tier dunaire. Ils ont soumis des plants de saules (plusieurs boutures r\u00e9alis\u00e9es pour chacun des 10 g\u00e9notypes diff\u00e9rents (plante m\u00e8re) retenus) \u00e0 diff\u00e9rents \u00ab contraintes \u00bb environnementales :<br \/>\nPour chaque g\u00e9notype, et dans chaque dispositif, ils ont mesur\u00e9 simultan\u00e9ment :<br \/>\nLeur plus grande d\u00e9couverte fut de mettre en \u00e9vidence que la plasticit\u00e9 ph\u00e9notypique influence davantage le nombre d\u2019esp\u00e8ces que les variations g\u00e9n\u00e9tiques. Autrement dit, le nombre d\u2019esp\u00e8ces associ\u00e9es au saule (arthropodes au-dessus et en dessous du sol, micro-organismes associ\u00e9s aux racines) dans les dispositifs exp\u00e9rimentaux variait davantage entre les clones soumis \u00e0 des contraintes diff\u00e9rentes qu\u2019entre les 10 diff\u00e9rents plantes m\u00e8res.<br \/>\nBarbour M. A., Erlandson S., Peay K., Locke B., Jules E. S., Crutsinger G. M. (2018). Trait plasticity is more important than genetic variation in determining species richness of associated communities. Journal of Ecology, Vol 107, Issue 1, Doi: 10.1111\/1365-2745.13014.<\/p>","protected":false},"excerpt":{"rendered":"<p>On distingue la plasticit\u00e9 ph\u00e9notypique (capacit\u00e9 des \u00eatres vivants \u00e0 d\u00e9velopper des caract\u00e8res morphologiques diff\u00e9rents \u00e0 partir d\u2019un m\u00eame g\u00e9notype pour mieux s\u2019adapter au changement de leur environnement) et la variation g\u00e9n\u00e9tique (indiquant le degr\u00e9 de variation g\u00e9notypique entre diff\u00e9rent individu d\u2019une m\u00eame population ou de populations diff\u00e9rentes). Les auteurs mettent en \u00e9vidence que la [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La plasticit\u00e9 ph\u00e9notypique influence d\u2019avantage la richesse sp\u00e9cifique que les variations g\u00e9n\u00e9tiques - For\u00eat.Nature<\/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:\/\/foretnature.be\/en\/resume-foret-mail\/la-plasticite-phenotypique-influence-davantage-la-richesse-specifique-que-les-variations-genetiques\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La plasticit\u00e9 ph\u00e9notypique influence d\u2019avantage la richesse sp\u00e9cifique que les variations g\u00e9n\u00e9tiques - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"On distingue la plasticit\u00e9 ph\u00e9notypique (capacit\u00e9 des \u00eatres vivants \u00e0 d\u00e9velopper des caract\u00e8res morphologiques diff\u00e9rents \u00e0 partir d\u2019un m\u00eame g\u00e9notype pour mieux s\u2019adapter au changement de leur environnement) et la variation g\u00e9n\u00e9tique (indiquant le degr\u00e9 de variation g\u00e9notypique entre diff\u00e9rent individu d\u2019une m\u00eame population ou de populations diff\u00e9rentes). 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