NOVELTY - Production of biofuel from plant material, involves obtaining a pulp suspension comprising lignocellulose materials, adding culture of Saccharophagus degradans expressing one or more compounds chosen from e.g. endo-1,4- beta -glucanase (cel5A) and mannanase (man26A) to the pulp, incubating the mixture for sufficient period of time to facilitate lignocellulase enzyme production, collecting the solids from the pulp suspension, transferring the solids to a hypotonic solution containing fermenting organism, and fermenting the solids to obtain the product.    USE - The method is useful for producing biofuel from plant material, where the biofuel is chosen from ethanol, butanol, isobutanol, acetic acid, oil and acetone, preferably ethanol (both claimed). Can also be used for producing organic products chosen from lactic acid, 1,3-propanediol, butanediol, glycerol, ethylene glycol, furfural, polyhydroxyalkanoates, cis-muconic acid, and chemicals chosen from xylose, acetone, acetate, glycine and lysine.    ADVANTAGE - The method is economical, and significantly reduces the need of potentially toxic thermochemical pretreatment and the need of loading cellulase from external sources.    DETAILED DESCRIPTION - Production of biofuel from plant material, involves obtaining a pulp suspension comprising lignocellulose materials, adding culture of Saccharophagus degradans expressing one or more compounds chosen from cellobiase (Bgl1A), cellodextrinase (ced3A), beta -1,4-xylanase (xyn10A), acetylxylan esterase (axe2A), pectate lyase (pel1A), pectin methylesterase (pes8A), endo-1,5-a-L-arabinase (arb43A), arabinogalactanase (arg53A), mannanase (man26A), alpha -galactosidase (agl27A), beta -1,3-glucanase (lam16A), carbohydrate-binding module protein (cbm2B), and beta -glycosidase (rGly43M), preferably endo-1,4- beta -glucanase (cel5A) to the pulp, incubating the mixture for sufficient period of time to facilitate lignocellulase enzyme production, collecting the solids from the pulp suspension, transferring the solids to a hypotonic solution containing fermenting organism, and fermenting the solids to obtain the product. An INDEPENDENT CLAIM is included for production of sugar from plant material, which involves obtaining a pulp suspension comprising carbohydrates, adding S.degradans culture to the pulp, incubating the mixture for sufficient period of time to facilitate saccharolytic enzyme production, collecting the solids from the pulp suspension and transferring the solids to a hypotonic solution to obtain the product.