{"id":12386,"date":"2023-05-22T16:43:54","date_gmt":"2023-05-22T14:43:54","guid":{"rendered":"https:\/\/www.toulouse-biotechnology-institute.fr\/?p=12386"},"modified":"2023-05-22T16:47:35","modified_gmt":"2023-05-22T14:47:35","slug":"transformation-de-la-lignine-par-des-consortia-microbiens-issus-du-microbiome-intestinal-des-termites","status":"publish","type":"post","link":"https:\/\/www.toulouse-biotechnology-institute.fr\/en\/transformation-de-la-lignine-par-des-consortia-microbiens-issus-du-microbiome-intestinal-des-termites\/","title":{"rendered":"Lignin processing by microbial consortia from the termite gut microbiome"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"12386\" class=\"elementor elementor-12386\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4b0905bf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4b0905bf\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8a479a5\" data-id=\"8a479a5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-62c8bf6e elementor-widget elementor-widget-text-editor\" data-id=\"62c8bf6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t\n<p class=\"wp-block-paragraph\"><strong>In current biorefineries, lignin is regarded as a by-product with little added value, whereas it could be considered as a renewable source of aromatic compounds for the production of biofuels and chemical compounds. The development of efficient lignin deconstruction systems would enable existing biorefinery processes to be improved and lignin to be valorized. Among lignin conversion routes, bioconversion by microbial species offers the advantage of being part of a green chemistry approach: low energy consumption, absence of solvents and toxic chemical reagents. As part of Louison Dumond's thesis, we highlighted the potential of microbial consortia derived from the digestive system of termites to degrade lignin. To achieve this, we combined bioreactor studies with cutting-edge analytical chemistry techniques and shotgun metagenomic and functional screening analyses. Our results highlighted the functional complementarity between the microbial species present in the microbial consortia and identified genetic targets involved in lignin deconstruction.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7484546 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7484546\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7f2770b\" data-id=\"7f2770b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eba4cbf elementor-widget elementor-widget-text-editor\" data-id=\"eba4cbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><strong>Background and challenges<\/strong>\u00a0<\/h2>\n<p>Aujourd&rsquo;hui, nos soci\u00e9t\u00e9s sont conscientes que les ressources fossiles telles que le p\u00e9trole, le gaz naturel ou le charbon sont limit\u00e9es et que leur utilisation intensive a un impact important sur le climat. Cela nous am\u00e8ne \u00e0 essayer de trouver de nouvelles fa\u00e7ons de fournir \u00e0 l&rsquo;industrie de l&rsquo;\u00e9nergie et des mol\u00e9cules et produits chimiques de base. Dans ce cadre, la biomasse lignocellulosique peut \u00eatre une source notable. Parmi les polym\u00e8res constituant la lignocellulose, la lignine est sans doute la plus difficile \u00e0 convertir en produits de valeur. Cependant, la gamme de mol\u00e9cules aromatiques qui peuvent \u00eatre obtenues par la conversion de la lignine fait que la mise en place d&rsquo;une bioraffinerie de lignine vaut la peine de relever le d\u00e9fi de sa d\u00e9gradation.<\/p>\n<p>Les termites sont connus comme les d\u00e9gradateurs de lignocellulose les plus efficaces dans la nature ; ils peuvent se nourrir des polysaccharides de la lignocellulose et les transformer en \u00e9nergie et en biomasse de termites. N\u00e9anmoins, le r\u00f4le exact du microbiome intestinal du termite dans la conversion de la lignine, n&rsquo;a pas \u00e9t\u00e9 enti\u00e8rement caract\u00e9ris\u00e9.\u00a0 Ainsi, nous avons entrepris d\u2019\u00e9tudier la capacit\u00e9 du microbiome digestif des termites \u00e0 d\u00e9grader la lignine.<\/p>\n<h2><strong>Results<\/strong><\/h2>\n<p>Our studies in controlled bioreactors, combined with cutting-edge analytical chemistry techniques (HSQC NMR and 13C-Py-GC-MS), revealed the degradation of over 20% of the lignin present in the initial biomass, as well as structural modifications to the polymer with the appearance of metabolites indicative of lignin degradation. Shotgun metagenomic sequencing of the entire DNA of the microbial consortium enriched in the bioreactors has enabled us to reconstruct the genomes of the species present in the lignolytic microbial consortium and to identify the functional complementarities existing between the members of the community. Our results provide new insights into the underlying cooperation between bacteria to degrade lignocellulose and lignin.<\/p>\n<p>Analysis of sequencing data coupled with functional screening metagenomics and enzyme activity measurements enabled us to identify genes encoding functions linked to plant wall deconstruction.<\/p>\n<p>Our research has yielded microbial consortia capable of degrading lignin and new sequencing data for screening new enzymes of use to the biorefinery.<\/p>\n<h2><strong>Outlook<\/strong><\/h2>\n<p>These results open up broad prospects for the use of microbial consortia and their enzymes to modify and degrade lignin. We will complete the analysis of our sequencing data to identify new enzymes of interest for the biorefinery.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f7c8238 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f7c8238\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b27c9c7\" data-id=\"b27c9c7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-318f96e elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"318f96e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-star\" viewbox=\"0 0 576 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M528.1 171.5L382 150.2 316.7 17.8c-11.7-23.6-45.6-23.9-57.4 0L194 150.2 47.9 171.5c-26.2 3.8-36.7 36.1-17.7 54.6l105.7 103-25 145.5c-4.5 26.3 23.2 46 46.4 33.7L288 439.6l130.7 68.7c23.2 12.2 50.9-7.4 46.4-33.7l-25-145.5 105.7-103c19-18.5 8.5-50.8-17.7-54.6zM388.6 312.3l23.7 138.4L288 385.4l-124.3 65.3 23.7-138.4-100.6-98 139-20.2 62.2-126 62.2 126 139 20.2-100.6 98z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tReferences\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tR\u00e9sultats pr\u00e9sent\u00e9s \u00e0 \u00ab Lignin Gordon Research Conferences ;  publication en cours de r\u00e9daction.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-343a8f6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"343a8f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81ac57c elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"81ac57c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chalkboard-teacher\" viewbox=\"0 0 640 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M208 352c-2.39 0-4.78.35-7.06 1.09C187.98 357.3 174.35 360 160 360c-14.35 0-27.98-2.7-40.95-6.91-2.28-.74-4.66-1.09-7.05-1.09C49.94 352-.33 402.48 0 464.62.14 490.88 21.73 512 48 512h224c26.27 0 47.86-21.12 48-47.38.33-62.14-49.94-112.62-112-112.62zm-48-32c53.02 0 96-42.98 96-96s-42.98-96-96-96-96 42.98-96 96 42.98 96 96 96zM592 0H208c-26.47 0-48 22.25-48 49.59V96c23.42 0 45.1 6.78 64 17.8V64h352v288h-64v-64H384v64h-76.24c19.1 16.69 33.12 38.73 39.69 64H592c26.47 0 48-22.25 48-49.59V49.59C640 22.25 618.47 0 592 0z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tPartnerships\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tIJPB \u2013 AgroParisTech, Wageningen University &amp; Research, RISH Kyoto University, Warwick University, IRD, Universit\u00e9 Paris 13\u2013Sorbonne Paris Cit\u00e9.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6cd8aa2 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6cd8aa2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a0ec114 elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"a0ec114\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-user-circle\" viewbox=\"0 0 496 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M248 104c-53 0-96 43-96 96s43 96 96 96 96-43 96-96-43-96-96-96zm0 144c-26.5 0-48-21.5-48-48s21.5-48 48-48 48 21.5 48 48-21.5 48-48 48zm0-240C111 8 0 119 0 256s111 248 248 248 248-111 248-248S385 8 248 8zm0 448c-49.7 0-95.1-18.3-130.1-48.4 14.9-23 40.4-38.6 69.6-39.5 20.8 6.4 40.6 9.6 60.5 9.6s39.7-3.1 60.5-9.6c29.2 1 54.7 16.5 69.6 39.5-35 30.1-80.4 48.4-130.1 48.4zm162.7-84.1c-24.4-31.4-62.1-51.9-105.1-51.9-10.2 0-26 9.6-57.6 9.6-31.5 0-47.4-9.6-57.6-9.6-42.9 0-80.6 20.5-105.1 51.9C61.9 339.2 48 299.2 48 256c0-110.3 89.7-200 200-200s200 89.7 200 200c0 43.2-13.9 83.2-37.3 115.9z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tContact\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tGuillermina Hernandez Raquet (hernandg@insa-toulouse.fr)\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Dans les bioraffineries actuelles, la lignine est consid\u00e9r\u00e9e comme un sous-produit \u00e0 faible valeur ajout\u00e9e alors qu\u2019elle pourrait \u00eatre consid\u00e9r\u00e9e comme une source renouvelable de compos\u00e9s aromatiques pour la production de biocarburants et de compos\u00e9s chimiques. Le d\u00e9veloppement de syst\u00e8mes efficaces de d\u00e9construction de la lignine permettrait d\u2019am\u00e9liorer les proc\u00e9d\u00e9s existants de bioraffinerie et de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12387,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[24],"class_list":["post-12386","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resultat-scientifique","tag-equipe-sophye"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Transformation de la lignine par des consortia microbiens issus du microbiome intestinal des termites | TBI, Toulouse Biotechnology Institute<\/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:\/\/www.toulouse-biotechnology-institute.fr\/en\/transformation-de-la-lignine-par-des-consortia-microbiens-issus-du-microbiome-intestinal-des-termites\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Transformation de la lignine par des consortia microbiens issus du microbiome intestinal des termites | TBI, Toulouse Biotechnology Institute\" \/>\n<meta property=\"og:description\" content=\"Dans les bioraffineries actuelles, la lignine est consid\u00e9r\u00e9e comme un sous-produit \u00e0 faible valeur ajout\u00e9e alors qu\u2019elle pourrait \u00eatre consid\u00e9r\u00e9e comme une source renouvelable de compos\u00e9s aromatiques pour la production de biocarburants et de compos\u00e9s chimiques. Le d\u00e9veloppement de syst\u00e8mes efficaces de d\u00e9construction de la lignine permettrait d\u2019am\u00e9liorer les proc\u00e9d\u00e9s existants de bioraffinerie et de [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.toulouse-biotechnology-institute.fr\/en\/transformation-de-la-lignine-par-des-consortia-microbiens-issus-du-microbiome-intestinal-des-termites\/\" \/>\n<meta property=\"og:site_name\" content=\"TBI, Toulouse Biotechnology Institute\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/TBI-Toulouse-Biotechnology-Institute-Bio-Chemical-Engineering-360428497952306\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-22T14:43:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-22T14:47:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.toulouse-biotechnology-institute.fr\/wp-content\/uploads\/2023\/05\/lignine.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1341\" \/>\n\t<meta property=\"og:image:height\" content=\"587\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Christelle\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@TBI_Biotech\" \/>\n<meta name=\"twitter:site\" content=\"@TBI_Biotech\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Christelle\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" 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