Detailed Characterization of the Conversion of Hardwood and Softwood Lignin by a Brown-Rot Basidiomycete.

ABSTRACT: Wood-degrading brown-rot fungi primarily target carbohydrates, leaving the lignin modified and potentially valuable for valorization. Here, we report a comprehensive comparison of how Gloeophyllum trabeum in vitro degrades hardwood and softwood, which have fundamentally different lignin structures. By harnessing the latest advancements in analytical methodologies, we show that G. trabeum removes more lignin from wood (up to 36%) than previously reported. The brown-rot decayed lignin appeared substantially C_α-oxidized, O-demethylated, with a reduction in interunit linkages, leading to formation of substructures indicative of C_α-C_β, β-O, and O-4 cleavage. Our work shows that the G. trabeum conversion of hardwoo

SUBMITTER: Rese M 

PROVIDER: S-EPMC11815815 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature