NOVELTY - Reducing (M1) acetate, arabinosidase and/or ferulate content in a plant involves expressing an enzyme that cleaves acetyl, arabinosyl or feruloyl substituents and targeting the cleaving enzyme to at least one component of the Golgi apparatus or manipulating the endogenous enzyme.    USE - For reducing acetate, arabinosidase and/or ferulate content in a plant (e.g. maize, soybean, sunflower, sorghum, canola, wheat, alfalfa, cotton, rice, barley, millet, peanut, sugar cane, grass, turf grass, miscanthus, switchgrass and cocoa) for producing biomass for silage or biofuel production; for modulating plant tissue growth with a Golgi targeted enzyme in a plant; for making product (e.g. constituent of ethanol); for making plant stover for production of biofuel comprising butanol or ethanol (claimed).    ADVANTAGE - The method alters the cross-linking and acetyl content in plant tissues in order to improve the quality of biomass available for biofuels in a plant; improves composition of the biomass of a plant by overexpression of the polynucleotide; and improves ethanol production. The plant obtained has improved silage quality and digestibility. Any reduction in acetate content of the cell wall and its substitution by polysaccharides improve the efficiency of biofuels production from the crop residue. Using the method, the plant cell wall acetate concentration, plant cell wall feruloylation, plant cell wall arabinose content, or plant cell wall cross-linking is decreased, as compared to non-transformed plants.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) modulating (M2) plant tissue growth with a Golgi targeted enzyme in a plant involving expressing a recombinant expression cassette comprising the polynucleotide operably linked to a promoter;    (2) a transgenic plant cell, with altered cell wall content comprising a recombinant expression cassette comprising or expressing a polynucleotide that encodes a polypeptide having at least 85% sequence similarity to a polypeptide selected from (SEQ ID NOS: 4-18, 59, 62, 65, 68, 70 and 71), not given in the specification;    (3) modulating (M3) plant carbohydrate concentration in a transgenic plant involving expressing a recombinant polynucleotide encoding the Golgi targeting enzyme;    (4) altering the cross-linking and acetyl content in plant tissues in order to improve the quality of biomass available for biofuels in a plant involving a1) transforming a plant cell with a recombinant expression cassette comprising a polynucleotide having at least 85% sequence identity to the full length sequence of a enzyme encoding polynucleotide selected from (SEQ ID NOS: 4-18, 59, 62, 65, 68, 70 and 71), not given in the specification, operably linked to a promoter, b1) culturing the plant cell under plant-forming conditions to express the polypeptide enzyme in the plant tissue, c1) growing the transformed plant tissue under plant tissue growing conditions, where the composition of the Golgi polysaccharides in the transformed plant cell is altered, and d1) processing the transformed plant tissue to obtain biofuel;    (5) producing biomass for silage or biofuel production involving providing plant tissue having lowered amount of acetate or ferulate content, where the plant tissue expresses a recombinant esterase that is targeted to a compartment within the Golgi apparatus;    (6) a product derived from the method of processing of transgenic plant component expressing an isolated polynucleotide encoding a Golgi targeting enzyme, where the method involving a2) growing a plant that expresses a polynucleotide having at least 85% sequence identity to the full length sequence of (SEQ ID NOS: 4-18, 59, 62, 65, 68, 70 and 71), not given in the specification, operably linked to a promoter, and b2) processing the plant component to obtain a product;    (7) a plant stover comprising a reduced acetyl or feruloyl content due to the targeting of a recombinant esterase to the Golgi apparatus, where the esterase catalyzes the cleavage of the acetyl or feruloyl molecules; and    (8) reducing the overall acetate and/or ferulate content in a plant tissue involving expressing an inhibitory nucleotide molecule that suppresses the expression of an acetyl or a feruloyl transferase.