{"id":35230,"date":"2026-07-04T19:34:00","date_gmt":"2026-07-04T17:34:00","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=35230"},"modified":"2026-07-09T09:58:06","modified_gmt":"2026-07-09T07:58:06","slug":"la-physique-a-beaucoup-a-nous-apprendre-sur-le-monde-vegetal","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2026\/07\/04\/la-physique-a-beaucoup-a-nous-apprendre-sur-le-monde-vegetal\/","title":{"rendered":"[Science] YO\u00cbL FORTERRE : \u00ab&nbsp;La physique a beaucoup \u00e0 nous apprendre sur le monde v\u00e9g\u00e9tal&nbsp;\u00bb"},"content":{"rendered":"<div class=\"paragraph\">\n<p><b>La Marseillaise :<\/b><b> Vous \u00eates un physicien qui \u00e9tudie<br \/>les plantes. N\u2019est-ce pas le domaine r\u00e9serv\u00e9 des biologistes<\/b><b>\u00a0<\/b><b>?<\/b><\/p>\n<p><b>Yo\u00ebl Forterre<\/b><b>\u00a0<\/b><b>:<\/b> Non, la physique et la m\u00e9canique sont aussi des portes d\u2019entr\u00e9e sur le monde v\u00e9g\u00e9tal. Ces disciplines ont beaucoup \u00e0 nous apprendre sur les plantes, en plus de ce qu\u2019apportent d\u00e9j\u00e0 la biologie et la g\u00e9n\u00e9tique. Les plantes n\u2019ont pas de cerveau, pas de muscles, pas de nerfs&#8230; et pourtant elles per\u00e7oivent, r\u00e9agissent et peuvent r\u00e9pondre et produire des mouvements rivalisant parfois avec les mouvements les plus rapides du r\u00e8gne animal. En tant que physiciens, nous pouvons \u00e9tudier les moteurs au c\u0153ur de ces mouvements.<\/p>\n<p><b>Conna\u00eet-on d\u2019autres plantes qui, comme la dion\u00e9e, peuvent modifier rapidement la rigidit\u00e9 de leur paroi pour faire des mouvements rapides ? <\/b><\/p>\n<p><b>Y.F.<\/b><b>\u00a0<\/b><b>:<\/b> Pas \u00e0 ma connaissance. Il existe une plante carnivore qui en est peut-\u00eatre capable, mais cela n\u2019a pas \u00e9t\u00e9 d\u00e9montr\u00e9. Il s\u2019agit d\u2019une plante aquatique compos\u00e9e de capsules remplies d\u2019eau qui sont en d\u00e9pression. Quand un insecte passe \u00e0 proximit\u00e9, une porte s\u2019ouvre et l\u2019insecte est aspir\u00e9 dans la capsule avant d\u2019\u00eatre dig\u00e9r\u00e9. Ce m\u00e9canisme d\u2019ouverture de la porte utilise peut-\u00eatre le m\u00eame type de ramollissement de la paroi que la dion\u00e9e. Il faudrait l\u2019\u00e9tudier.<\/p>\n<p><b>En plus de la dion\u00e9e, sur quelles plantes travaillez-vous en ce moment<\/b><b>\u00a0<\/b><b>? <\/b><\/p>\n<p><b>Y.F.<\/b><b>\u00a0<\/b><b>:<\/b> Nous nous int\u00e9ressons de pr\u00e8s au \u00ab\u00a0mimosa pudique\u00a0\u00bb, aussi appel\u00e9 Sensitive, qui a l\u2019air d\u2019\u00eatre capable de transporter de l\u2019eau de fa\u00e7on ultra-rapide gr\u00e2ce \u00e0 un syst\u00e8me que nous sommes en train de mettre en \u00e9vidence.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"La Marseillaise : Vous &ecirc;tes un physicien qui &eacute;tudieles plantes. N&rsquo;est-ce pas le domaine r&eacute;serv&eacute; des biologistes&nbsp;?Yo&euml;l Forterre&nbsp;: Non, la physique et la m&eacute;canique sont aussi des portes &#8230;","protected":false},"author":1,"featured_media":35231,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3926,3925,20],"tags":[1795,10,2482,2263,2261,16,946,2277,1058,5127,988,2001,6016,6018],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-35230","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil-merge","category-accueil-third","category-societe","tag-biologie","tag-bouches-du-rhone","tag-cnrs","tag-depression","tag-insecte","tag-marseille","tag-physique","tag-plantes","tag-science","tag-universitaire","tag-week-end","tag-weekend","tag-xavier-boivinet","tag-yoel-forterre","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/35230","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/comments?post=35230"}],"version-history":[{"count":3,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/35230\/revisions"}],"predecessor-version":[{"id":35291,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/35230\/revisions\/35291"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/35231"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=35230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=35230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=35230"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=35230"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=35230"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=35230"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=35230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}