{"id":32873,"date":"2026-06-13T12:45:00","date_gmt":"2026-06-13T10:45:00","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=32873"},"modified":"2026-06-14T20:14:19","modified_gmt":"2026-06-14T18:14:19","slug":"entretien-andrea-pasini-cnrs-il-y-a-un-interet-grandissant-des-biologistes-autour-de-trichoplax","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2026\/06\/13\/entretien-andrea-pasini-cnrs-il-y-a-un-interet-grandissant-des-biologistes-autour-de-trichoplax\/","title":{"rendered":"[Entretien] Andrea Pasini, CNRS : \u00ab Il y a un int\u00e9r\u00eat grandissant des biologistes autour de “Trichoplax” \u00bb"},"content":{"rendered":"
\n

La Marseillaise :<\/b> Vous avez \u00e9tudi\u00e9 le d\u00e9placement
de \u00ab<\/b>\u00a0<\/b>Trichoplax<\/b>\u00a0<\/b>\u00bb, cet animal marin multicellulaire tr\u00e8s simple. Est-ce un organisme classique sur lequel les biologistes aiment travailler ?<\/b><\/p>\n

Andrea Pasini :<\/b> Non, pas du tout. Il a \u00e9t\u00e9, et reste, peu \u00e9tudi\u00e9. D\u00e9couvert en 1883, il est tomb\u00e9 dans l\u2019oubli jusqu\u2019aux ann\u00e9es 1970 quand un zoologiste allemand s\u2019est rendu compte que, avec d\u2019autres organismes semblables, ils composaient une famille d\u2019animaux plats : les placozoaires. Depuis les ann\u00e9es 1980, il y a un int\u00e9r\u00eat grandissant des biologistes autour de ces animaux.<\/p>\n

Pourquoi ? <\/b><\/p>\n

A.P. :<\/b> D\u2019un point de vue \u00e9volutif, ils pourraient nous renseigner sur la transition qui s\u2019est produite pour passer d\u2019organismes compos\u00e9s d\u2019une seule cellule vers ceux compos\u00e9s de plusieurs cellules. Ils pourraient ressembler aux premiers animaux multicellulaires apparus \u00e0 la surface de la Terre au cours de l\u2019\u00e9volution. Ensuite, ils peuvent nous renseigner sur les conditions minimales n\u00e9cessaires pour la survie d\u2019un animal. Car il s\u2019agit d\u2019\u00eatres multicellulaires, mais d\u00e9pourvus de muscles, d\u2019organes, de syst\u00e8mes nerveux, digestif ou reproducteur.<\/a> Et pourtant, ils arrivent \u00e0 survivre dans des environnements parfois complexes et agressifs.<\/p>\n

D\u2019o\u00f9 viennent ceux que vous \u00e9tudiez ? <\/b><\/p>\n

A.P. :<\/b> Nous les avons pr\u00e9lev\u00e9s dans un magasin d\u2019aquariophilie du centre de Marseille. Dans un aquarium d\u2019eau de mer avec des coraux et des algues tropicales, il y avait des petits organismes sur la vitre. Il s\u2019agissait de Trichoplax<\/i>. Depuis six ans, nous cultivons cette m\u00eame souche au laboratoire.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"La Marseillaise : Vous avez étudié le déplacementde « Trichoplax », cet animal marin multicellulaire très simple. Est-ce un organisme classique sur lequel les biologistes aiment travailler ?","protected":false},"author":1,"featured_media":32874,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[918,3926,3925,20],"tags":[1057,1840,182,1795,10,1687,2482,343,3356,1592,416,1058,353,988,2001],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-32873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil","category-accueil-merge","category-accueil-third","category-societe","tag-aix-marseille","tag-animal","tag-animaux","tag-biologie","tag-bouches-du-rhone","tag-chercheurs","tag-cnrs","tag-entretien","tag-monde-vivant","tag-recherche","tag-recherche-scientifique","tag-science","tag-sciences","tag-week-end","tag-weekend","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/32873","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=32873"}],"version-history":[{"count":1,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/32873\/revisions"}],"predecessor-version":[{"id":32875,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/32873\/revisions\/32875"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/32874"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=32873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=32873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=32873"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=32873"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=32873"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=32873"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=32873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}