{"id":2756,"date":"2025-06-13T16:38:14","date_gmt":"2025-06-13T14:38:14","guid":{"rendered":"https:\/\/fytofend.com\/news\/faire-progresser-la-recherche-sur-le-cos-oga-pour-une-protection-durable-de-la-betterave-sucriere-le-projet-de-these-de-maksym\/"},"modified":"2026-07-09T13:55:18","modified_gmt":"2026-07-09T11:55:18","slug":"faire-progresser-la-recherche-sur-le-cos-oga-pour-une-protection-durable-de-la-betterave-sucriere-le-projet-de-these-de-maksym","status":"publish","type":"post","link":"https:\/\/fytofend.com\/fr\/news\/faire-progresser-la-recherche-sur-le-cos-oga-pour-une-protection-durable-de-la-betterave-sucriere-le-projet-de-these-de-maksym\/","title":{"rendered":"Faire progresser la recherche sur le COS-OGA pour une protection durable de la betterave sucri\u00e8re : le projet de th\u00e8se de Maksym"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/fytofend.com\/wp-content\/uploads\/2025\/06\/4-1-1024x724.jpg\" alt=\"\" class=\"wp-image-1831\" style=\"width:798px;height:auto\" srcset=\"https:\/\/fytofend.com\/wp-content\/uploads\/2025\/06\/4-1-1024x724.jpg 1024w, https:\/\/fytofend.com\/wp-content\/uploads\/2025\/06\/4-1-300x212.jpg 300w, https:\/\/fytofend.com\/wp-content\/uploads\/2025\/06\/4-1-768x543.jpg 768w, https:\/\/fytofend.com\/wp-content\/uploads\/2025\/06\/4-1-1536x1086.jpg 1536w, https:\/\/fytofend.com\/wp-content\/uploads\/2025\/06\/4-1.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<div class=\"wp-block-heading\">\n<h2 class=\"wp-block-heading\"><strong>Contexte et objectifs<\/strong><\/h2>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">Maksym s&rsquo;est r\u00e9cemment lanc\u00e9 dans un projet de recherche doctorale au sein de l&rsquo;Universit\u00e9 Agro-Biotech de Gembloux (Li\u00e8ge), ax\u00e9 sur l&rsquo;optimisation de la technologie de lutte biologique COS-OGA. L\u2019objectif principal est d\u2019am\u00e9liorer son efficacit\u00e9 contre la tache foliaire caus\u00e9e par Cercospora (CLS), une maladie dont la pr\u00e9valence et la gravit\u00e9 ne cessent d\u2019augmenter dans les champs de betteraves sucri\u00e8res. Cette situation repr\u00e9sente un risque consid\u00e9rable pour les rendements et la rentabilit\u00e9 des agriculteurs et souligne l\u2019urgence de mettre au point des strat\u00e9gies de protection des v\u00e9g\u00e9taux efficaces et durables.  <\/p>\n<\/div><div class=\"wp-block-heading\">\n<h3 class=\"wp-block-heading\"><strong>Approche scientifique et m\u00e9thodologie<\/strong><\/h3>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">Cette recherche adopte une approche mol\u00e9culaire et physiologique pour \u00e9tudier comment <a href=\"https:\/\/fytofend.com\/fr\/cos-oga\/\">le COS-OGA<\/a> prot\u00e8ge les plantes. Le COS (oligosaccharides de chitosane) et l\u2019OGA (oligogalacturonides) sont reconnus pour leur capacit\u00e9 \u00e0 activer les r\u00e9ponses de d\u00e9fense des plantes. Cependant, les m\u00e9canismes d\u2019action exacts chez la betterave sucri\u00e8re \u2014 en particulier dans des conditions non contr\u00f4l\u00e9es, o\u00f9 les stress abiotiques se combinent aux stress biotiques \u2014 ne sont pas encore enti\u00e8rement \u00e9lucid\u00e9s. Pour y rem\u00e9dier, Maksym r\u00e9alisera un profilage complet des modifications transcriptomiques, prot\u00e9omiques et m\u00e9tabolomiques chez la betterave sucri\u00e8re expos\u00e9e au COS-OGA.   <\/p>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">Cette compr\u00e9hension m\u00e9canistique permettra d\u2019orienter l\u2019optimisation du complexe COS-OGA, notamment par le biais de modifications structurelles potentielles et de strat\u00e9gies visant \u00e0 am\u00e9liorer son absorption \u00e0 travers la surface foliaire \u00e9paisse et hydrophobe de la plante. Ces travaux permettront \u00e9galement d\u2019\u00e9valuer les performances du produit dans des conditions de stress environnemental connues pour perturber les fonctions immunitaires des plantes. <\/p>\n<\/div><div class=\"wp-block-heading\">\n<h3 class=\"wp-block-heading\"><strong>Mise en \u0153uvre sur le terrain et collaboration<\/strong><\/h3>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">Un \u00e9l\u00e9ment essentiel du projet r\u00e9side dans son partenariat avec l&rsquo;IRBAB, l&rsquo;Institut belge pour l&rsquo;am\u00e9lioration de la betterave et de la chicor\u00e9e. Ensemble, ils \u00e9valueront la variabilit\u00e9, li\u00e9e au g\u00e9notype, des r\u00e9ponses au COS-OGA. La derni\u00e8re \u00e9tape consistera en des essais en plein champ dans des conditions d&rsquo;exploitation commerciale afin de d\u00e9montrer la fiabilit\u00e9 et l&rsquo;\u00e9volutivit\u00e9 des r\u00e9sultats.  <\/p>\n<\/div><div class=\"wp-block-heading\">\n<h3 class=\"wp-block-heading\"><strong>Personnes et institutions concern\u00e9es<\/strong><\/h3>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">Ces travaux de recherche sont dirig\u00e9s par le professeur <a href=\"https:\/\/www.linkedin.com\/in\/s%C3%A9bastien-massart-752b99\/\">S\u00e9bastien Massart<\/a>, sp\u00e9cialiste des interactions entre les plantes et les micro-organismes \u00e0 <a href=\"https:\/\/www.linkedin.com\/school\/gembloux-agro-bio-tech---universit%C3%A9-de-li%C3%A8ge\/\">l\u2019Universit\u00e9 de Li\u00e8ge\/Gembloux<\/a>. La collaboration avec l\u2019IRBAB est renforc\u00e9e par la participation de plusieurs sp\u00e9cialistes, notamment Chlo\u00e9 Dufrane, qui apporte son expertise en pathologie du CLS ; Lisa Ponet, dont les travaux portent sur les d\u00e9fenses induites chez les plantes ; et Andr\u00e9 Wauters, responsable de la s\u00e9lection des vari\u00e9t\u00e9s de betteraves sucri\u00e8res et des caract\u00e8res de r\u00e9sistance. <\/p>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">Ce projet a pu voir le jour gr\u00e2ce \u00e0 un financement de la R\u00e9gion wallonne dans le cadre du programme Win4Doc, g\u00e9r\u00e9 par la SPW Recherche. Nous tenons \u00e0 remercier Fabian Lapierre et Fleur Roland pour leur soutien, qui a permis de mener \u00e0 bien ce projet. <\/p>\n<\/div><div class=\"wp-block-heading\">\n<h3 class=\"wp-block-heading\"><strong>Perspectives<\/strong><\/h3>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">En associant une analyse scientifique approfondie \u00e0 des essais sur le terrain, la th\u00e8se de Maksym vise \u00e0 combler le foss\u00e9 entre la recherche et la mise en pratique. Ces r\u00e9sultats pourraient contribuer de mani\u00e8re significative au d\u00e9veloppement d&rsquo;outils de lutte biologique de nouvelle g\u00e9n\u00e9ration, renfor\u00e7ant ainsi la r\u00e9silience et la durabilit\u00e9 de la production de betteraves sucri\u00e8res. <\/p>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\">D&rsquo;autres informations vous seront communiqu\u00e9es au fur et \u00e0 mesure que les travaux passeront des environnements contr\u00f4l\u00e9s \u00e0 la phase de validation en exploitation.<\/p>\n<\/div><div class=\"wp-block-paragraph\">\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Contexte et objectifs Maksym s&rsquo;est r\u00e9cemment lanc\u00e9 dans un projet de recherche doctorale au sein de l&rsquo;Universit\u00e9 Agro-Biotech de Gembloux (Li\u00e8ge), ax\u00e9 sur l&rsquo;optimisation de la technologie de lutte biologique COS-OGA. L\u2019objectif principal est d\u2019am\u00e9liorer son efficacit\u00e9 contre la tache foliaire caus\u00e9e par Cercospora (CLS), une maladie dont la pr\u00e9valence et la gravit\u00e9 ne cessent [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1829,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-2756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classifiee"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Faire progresser la recherche sur le COS-OGA pour une protection durable de la betterave sucri\u00e8re : le projet de th\u00e8se de Maksym - Fytofend<\/title>\n<meta name=\"description\" content=\"L&#039;objectif principal est d&#039;am\u00e9liorer son efficacit\u00e9 contre la tache foliaire caus\u00e9e par Cercospora (CLS)\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fytofend.com\/fr\/news\/faire-progresser-la-recherche-sur-le-cos-oga-pour-une-protection-durable-de-la-betterave-sucriere-le-projet-de-these-de-maksym\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Faire progresser la recherche sur le COS-OGA pour une protection durable de la betterave sucri\u00e8re : le projet de th\u00e8se de Maksym - 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