Substrate Shift Reveals Roles for Members of Bacterial Consortia in Degradation of Plant Cell Wall Polymers.

摘要: Deconstructing the intricate matrix of cellulose, hemicellulose and lignin poses a major challenge in biofuel production. In diverse environments nature, some microbial communities, are able to overcome plant biomass recalcitrance. Identifying key degraders each component cell wall can help improve biological degradation feedstock. Here, we sequenced metagenome lignocellulose-adapted consortia sub-cultured on xylan alkali media. We observed drastic shift community composition after sub-culturing, independently original consortia. Proteobacteria relative abundance increased growth medium, while Bacteroidetes medium. At genus level, Pseudomonas was more abundant communities growing lignin, Sphingobacterium Cellulomonas highest also functional convergence incubation due an enrichment genes involved benzoate catechol ortho-cleavage pathways. Our results represent important step towards elucidation members lignocellulose may aide design novel lignocellulolytic that efficiently degrade polymers.