NOVELTY - Transgenic monocot plant protein capable of degrading lignocellulose, is ground and extracted to produce plant protein by providing in monocot plant DNA or at least 80% homology to the 6-phospho- beta -glucosidase (bglA) gene, a defined sequence of 2493 base pairs (SEQ ID No. 14) given in the specification of Butyrivibrio fibrisolvens encoding beta -glucosidase which is operably linked to nucleotide sequence encoding signal peptide, grinding plant after the beta -glucosidase is accumulated, and extracting the plant protein from the ground monocot plant, is new.    USE - The transgenic monocot plant protein is useful for degrading lignocellulose into fermentable sugars (all claimed) such as ethanol used as biofuel.    ADVANTAGE - The transgenic monocot plant protein enables producing biofuel by inexpensive and simple process.    DETAILED DESCRIPTION - A transgenic monocot plant protein capable of degrading lignocellulose, is ground and extracted to produce the plant protein by a method which involves providing in the monocot plant DNA or at least 80% homology to the 6-phospho- beta -glucosidase (bglA) gene, a defined sequence of 2493 base pairs (SEQ ID No. 14) given in the specification of Butyrivibrio fibrisolvens encoding beta -glucosidase which is operably linked to a nucleotide sequence encoding a signal peptide that directs the beta -glucosidase to a subcellular compartment of the transgenic monocot plant, grinding the monocot plant after the beta -glucosidase is accumulated, and extracting the plant protein from the ground monocot plant, optionally mixing the plant protein with another plant protein encoding cellulase, and optionally mixing with a commercially available enzyme produced by a bacterium, is new. INDEPENDENT CLAIMS are included for the following: (1) method for producing above-cited transgenic monocot plant protein; and (2) method for converting lignocellulose in a transgenic monocot plant material to fermentable sugars, involves (a) growing above-cited transgenic monocot plant for a time sufficient for the transgenic monocot plant to accumulate a sufficient amount of beta -glucosidase in the subcellular compartment of the transgenic monocot plant, harvesting the transgenic monocot plant having accumulated the beta -glucosidase, grinding the transgenic monocot plant for a time sufficient to produce the transgenic monocot plant material where the beta -glucosidase and transgenic monocot plant are released from the subcellular compartment, incubating the transgenic monocot plant material for a time sufficient for the beta -glucosidase in the plant material to produce the fermentable sugars from the lignocellulose in the transgenic monocot plant material, and extracting the fermentable sugars from the transgenic monocot plant material, or (b) growing the transgenic monocot plant for a time sufficient for the transgenic monocot plant to accumulate a sufficient amount of the xylanase in the subcellular compartment of the transgenic monocot plant, harvesting the transgenic monocot plant which has accumulated the xylanase, grinding the transgenic monocot plant to produce the transgenic monocot plant material, where the xylanase and transgenic monocot plant are released from the subcellular compartment, incubating the transgenic monocot plant material for a time sufficient for the xylanase in the plant material to produce the fermentable sugars from the lignocellulose, and extracting the fermentable sugars from the transgenic monocot plant material.