Schematic overview of OM degradation pathways investigated in this study. Assignments of potential ORFs involved in the arrow numbers: 1, fucose, cellulose, and other plant matter GHs, pectate and alginate polysaccharide lyases, cellulose and starch CBMs, glucodextranase, FGGY carbohydrate kinase, l-arabinose isomerase, l-fucose isomerases, pectinesterase, glucuronate isomerase, aldolases, fucose transporters, and polysaccharide deacetylase; 2, starch GHs, starch CBMs, and alpha-amylase/4-alpha-glucanotransferase; 3, chitin GHs, rhamnogalacturonan PLs, chitin CBMs, YdjC-like carbohydrate deacetylase, and diacetylchitobiose deacetylase; 4, ORF assignments from Fig. 4.