TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Composition: The enzyme polypeptide has at least 85% amino acid sequence identity to a sequence selected from SEQ ID NO: 1, 2, 11, 40, 78, and 80, where the enzyme polypeptide is encoded by a nucleotide sequence selected from SEQ ID NO: 85-90. The enzyme polypeptide has an activity selected from feruloyl esterase, xylanase, alpha-L-arabinofuranosidase, endogalactanase, acetylxylan esterase, beta-xylosidase, xyloglucanase, glucuronoyl esterase, endo-1,5-alpha-L-arabinosidase, pectin methylesterase, endopolygalacturonase, exopolygalacturonase, pectin lyase, pectate lyase, rhamnogalacturonan lyase, pectin acetylesterase, alpha-L-rhamnosidase, mannanase, exoglucanase, endoglucanase, cellulase, licheninase, laminarinase, beta-(1,3)-(1,4)-glucanase, beta-glucan glucohyrdolase, and beta-glucosidase activity. The activity of the enzyme polypeptide is engaged by post-harvest processing of the plant biomass, where the post-harvest processing is selected from ensilage, thermochemical bioprocessing, processing in the digestive tract of a mammal, and their combinations. The enzyme polypeptide modifies a plant cell wall component selected from xylans, xylan side chains, glucuronoarabinoxylans, xyloglucans, mixed-linkage glucans, pectins, pectates, rhamnogalacturonans, rhamnogalacturonan side chains, lignin, cellulose, mannans, galactans, arabinans, oligosaccharides derived from cell wall polysaccharides, and their combinations, where the enzyme polypeptide hydrolyzes the plant cell wall component. The enzyme polypeptide hydrolyzes a linkage within plant cell wall, where the linkage is a feruloyl ester linkage. The enzyme polypeptide hydrolyzes an interaction in the plant biomass selected from covalent linkages, ionic bonding interactions, and hydrogen bonding interactions, where the interaction comprises hemicellulose cellulose-lignin, hemicellulose-cellulose-pectin, hemicellulose diferululate hemicellulose, hemicellulose-ferulate-lignin, mixed beta-D-glucan-cellulose, mixed beta-D-glucan-hemicellulose, or pectin-ferulate-lignin linkages. The plant biomass comprises biomass from a monocotyledonous plant selected from maize, sorghum, switchgrass, miscanthus, sugarcane, wheat, rice, rye, turfgrass, and millet. The plant biomass comprises biomass from a dicotyledonous plant selected from tobacco, potato, soybean, canola, sunflower, alfalfa, cotton and poplar, eucalyptus, pine, sweetgum, and cottonwood. The plant biomass is obtained from a plant part selected from leaves, stems, seeds, and their combinations. The composition further comprises an enzyme polypeptide not having at least 85% amino acid sequence identity to any of SEQ ID NO: 1-84, where the enzyme polypeptide is selected from a cellulase polypeptide, a hemicellulase polypeptide, a ligninase polypeptide, and their combinations. Preferred Plant: The promoter sequence is a sequence of a promoter selected from a constitutive promoter (preferred), a developmentally specific promoter, a tissue-specific promoter, and an inducible promoter, where the promoter is selected from act 1 promoter and the 35S cytomegalovirus (CMV) promoter. The enzyme polypeptide is expressed in one or more sub-cellular compartments or organelles, where the one or more sub-cellular compartments or organelles is selected from apoplast, chloroplast, vacuole, cell wall, endoplasmic reticulum, and their combinations. The recombinant polynucleotide further encodes a signal peptide, where the signal peptide is a secretion signal that allows localization to a cell compartment or organelle selected from cytosol, vacuole, nucleus, endoplasmic reticulum, cell wall, mitochondria, apoplast, peroxisomes, and plastid. The secretion signal is a secretion signal from sea anemone equistatin. The secretion signal comprises a KDEL motif. Preferred Vector: The vector comprises a vector selected from a binary vector, a viral vector, a phage, a phagemid, a cosmid, and a plasmid. Preferred Cell: The cell comprises an expression vector comprising the nucleic acid encoding the enzyme polypeptide. The cell is a plant cell, a bacterial cell, a fungal cell, or a yeast cell. Preferred Antibody: The feruloyl esterase polypeptide has an amino acid sequence at least 85% identical to SEQ ID NO: 2. The exoglucanase polypeptide has an amino acid sequence at least 85% identical to SEQ ID NO: 40. The antibody is a polyclonal antibody or a monoclonal antibody. Preferred Array: Each oligonucleotide comprises at least ten consecutive nucleotides from a nucleic acid having a sequence of one of SEQ ID NO: 83-90. The substrate comprises a material selected from metal, resin, polymer, ceramic, glass, graphite, and their combinations. The substrate is a flow cell, microelectrode, bead, gel, plate, or capillary tube. Sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication. ACTIVITY - Plant Protectant. No biological data given.    MECHANISM OF ACTION - Enzyme.    EXAMPLE - No suitable example given.