{"id":33450,"date":"2021-08-23T11:19:11","date_gmt":"2021-08-23T09:19:11","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=33450"},"modified":"2021-08-23T11:19:11","modified_gmt":"2021-08-23T09:19:11","slug":"les-phenomenes-dallelopathie-dependent-du-contexte-dans-lequel-se-trouvent-les-plantes","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/les-phenomenes-dallelopathie-dependent-du-contexte-dans-lequel-se-trouvent-les-plantes\/","title":{"rendered":"Les ph\u00e9nom\u00e8nes d&rsquo;all\u00e9lopathie d\u00e9pendent du contexte dans lequel se trouvent les plantes"},"content":{"rendered":"<p class=\"text-build-content\" data-testid=\"PZFQT9T3_T\">Certaines plantes utilisent l\u2019all\u00e9lopathie pour concurrencer les plantes voisines. La capacit\u00e9 \u00e0 induire la production de compos\u00e9s all\u00e9lopathiques en r\u00e9ponse \u00e0 la concurrence est suppos\u00e9e \u00eatre adaptative. En effet, les plantes pourraient \u00e9conomiser les co\u00fbts de production de m\u00e9tabolites en l&rsquo;absence de concurrents. C\u2019est ce que cette \u00e9tude am\u00e9ricaine tente de creuser en prenant l\u2019exemple du solidage du Canada (Solidago altissima), plante indig\u00e8ne en Am\u00e9rique du Nord mais solidement invasives dans le reste du monde.<\/p>\n<p class=\"text-build-content\" data-testid=\"PZFQT9T3_T\">Les chercheurs ont mesur\u00e9 les concentrations en polyac\u00e9tyl\u00e8nes \u2013 compos\u00e9s all\u00e9lopathiques \u2013 en r\u00e9ponse \u00e0 la comp\u00e9tition. Ils ont observ\u00e9 que ces concentrations variaient effectivement suivant deux facteurs :<\/p>\n<p class=\"text-build-content\" data-testid=\"PZFQT9T3_T\">\u2022 L\u2019histoire de l&rsquo;\u00e9volution des populations v\u00e9g\u00e9tales : le caract\u00e8re pr\u00e9coce ou non de l\u2019invasion influe sur l\u2019induction de compos\u00e9s all\u00e9lopathiques.<\/p>\n<p class=\"text-build-content\" data-testid=\"PZFQT9T3_T\">\u2022 La disponibilit\u00e9 des nutriments : l\u2019induction de polyac\u00e9tyl\u00e8nes est devenue plus importante en cas de diminution des nutriments. Une all\u00e9lopathie accrue dans ce contexte peut \u00eatre particuli\u00e8rement b\u00e9n\u00e9fique pour supprimer la capacit\u00e9 d&rsquo;exploitation d&rsquo;un concurrent.<\/p>","protected":false},"excerpt":{"rendered":"<p>Certaines plantes utilisent l\u2019all\u00e9lopathie pour concurrencer les plantes voisines. La capacit\u00e9 \u00e0 induire la production de compos\u00e9s all\u00e9lopathiques en r\u00e9ponse \u00e0 la concurrence est suppos\u00e9e \u00eatre adaptative. En effet, les plantes pourraient \u00e9conomiser les co\u00fbts de production de m\u00e9tabolites en l&rsquo;absence de concurrents. C\u2019est ce que cette \u00e9tude am\u00e9ricaine tente de creuser en prenant l\u2019exemple [&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>Les ph\u00e9nom\u00e8nes d&#039;all\u00e9lopathie d\u00e9pendent du contexte dans lequel se trouvent les plantes - 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\/les-phenomenes-dallelopathie-dependent-du-contexte-dans-lequel-se-trouvent-les-plantes\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les ph\u00e9nom\u00e8nes d&#039;all\u00e9lopathie d\u00e9pendent du contexte dans lequel se trouvent les plantes - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Certaines plantes utilisent l\u2019all\u00e9lopathie pour concurrencer les plantes voisines. La capacit\u00e9 \u00e0 induire la production de compos\u00e9s all\u00e9lopathiques en r\u00e9ponse \u00e0 la concurrence est suppos\u00e9e \u00eatre adaptative. En effet, les plantes pourraient \u00e9conomiser les co\u00fbts de production de m\u00e9tabolites en l&rsquo;absence de concurrents. 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La capacit\u00e9 \u00e0 induire la production de compos\u00e9s all\u00e9lopathiques en r\u00e9ponse \u00e0 la concurrence est suppos\u00e9e \u00eatre adaptative. En effet, les plantes pourraient \u00e9conomiser les co\u00fbts de production de m\u00e9tabolites en l&rsquo;absence de concurrents. 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