Home • Trametes betulina CIRM-BRFM 1801 v1.0
Picture from Pierre-Arthur Moreau, Université de Lille, France
Picture from Pierre-Arthur Moreau, Université de Lille, France

This genome was sequenced as part of the JGI Community Sequencing Program “Survey of the lignocellulolytic capabilities over the order Polyporales”. Within Agaricomycotina, the order Polyporales is the major group of wood decayers in temperate and tropical forests. As such, Polyporales have a pivotal role in the global carbon cycle. Lignocellulosic biomass is the most important carbon storage on the emerged land, and provides a renewable resource for the production of biofuels and chemicals, including value added chemicals. Polyporales are able to deconstruct the three main polymers of lignocellulose; cellulose, hemicellulose and lignin. In particular, white-rot fungi are able to totally degrade highly recalcitrant lignin polymers through the production of extracellular enzymes including laccases, lignin peroxidases, manganese peroxidases and versatile peroxidases. As a consequence, white-rot fungi have a high potential for biorefineries using raw lignocellulosic feedstock from different origins (dedicated crops, agricultural wastes, silviculture, etc.) that do not compete with food production or agricultural land.

Trametes is a cosmopolitan fungal genus the members of which cause white rot of wood. Species of Trametes are of high biotechnological interest due to their ability to produce extracellular lignin-degrading enzymes. Trametes betulina (L.), also named Lenzites betulinus, is found on all continents and can survive under boreal, temperate, and tropical climate conditions (Justo & Hibbett, Taxon, 2011). It is a grayish white to cream, coriaceous and corky, lamellate polypore. The pileus is semicircular, broadly and strongly attached to the substrate, dimidiate to largely fan-shaped. The pileus surface grows in numerous tomentose to hispid concentric zones. Lamelleae are white to ochraceous.

The genome sequencing for Trametes betulina will allow the exploration of novel biocatalysts and deepen our understanding of the functional diversity among Polyporales, i.e. enzymatic capabilities linked to lignocellulose degradation.