NOVELTY - An isolated microorganism (M1) of Aspergillus saccharolyticus species is new.    USE - For producing polypeptide having beta-glucosidase activity; and for degrading or converting a lignocellulosic material (where the lignocellulosic material is obtained from agricultural residues, such as straw, maize stems, corn fibers and husk, forestry waste such as sawdust or wood-chips, and from energy crops such as willow, yellow poplar and switch grass) into cellobiase, cellodextrin, monosaccharide glucose units (where the monosaccharide glucose units are used for the production of a chemical product selected from formic acid, methanol, carbon monoxide (+H2 gives syngas), carbon dioxide, acetaldehyde, acetic acid and anhydride, ethanol, glycine, oxalic acid, ethylene glycol, ethylene oxide, alanine, glycerol, 3-hydroxypropionic acid, lactic acid, malonic acid, serine, propionic acid, acetone, acetoin, aspartic acid, butanol, fumaric acid, 3-hydroxybutyrolactone, malic acid, succinic acid, threonine, arabinitol, furfural, glutamic acid, glutaric acid, itaconic acid, levulinic acid, proline, xylitol, xylonic acid, aconitic acid, adipic acid, citric acid, fructose, 2,5-furan dicarboxylic acid, glucaric acid, gluconic acid, Kojic and Comeric acid, lysine, and sorbitol), and fermentation product (preferably alcohol, inorganic acid, organic acid, hydrocarbon, ketone, amino acid, and/or gas) (all claimed).    ADVANTAGE - The microorganism (M1) is capable of hydrolyzing a beta 1-4 glucose-glucose linkage; is capable of at least partially degrading a lignocellulosic material into cellodextrin or monosaccharide glucose units; and produces beta-glucosidase activity polypeptide having more efficient hydrolytic activity compared to commercial beta-glucosidase containing preparations, especially with regard to thermostability. The extract or incubation broth of the microorganism (M1) has a betaglucosidase activity, where at least 50% of the beta-glucosidase activity remains after 4 hours, 5 hours or after 6 hours of incubation at 60 degrees C. The microorganism providing polypeptide is capable of hydrolyzing cellobiose and/or cellodextrins. The microorganism provides polypeptide having a specific activity (Vmax) of at least 40 U/mg with cellobiose as substrate in hydrolysis. The microorganism providing polypeptide having the half-life of the beta-glucosidase activity at 60 degrees C is at least 200 minutes or 300 minutes or 360 minutes.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) new isolated polypeptide (P1) having beta-glucosidase activity comprising: a) an amino acid sequences of 846 amino acids (SEQ NO: 3), 831 amino acids (SEQ NO: 4), 866 amino acids (SEQ NO: 7), 720 amino acids (SEQ NO: 10), or 766 amino acids (SEQ NO: 13) as given in the specification, b) a biologically active sequence variant of any of SEQ NO: 3, 4, 7, 10, or 13, where the variant has at least 92% sequence identity to the SEQ NO: 3, 4, 7, 10, or 13, or c) a biologically active fragment of at least 30 consecutive amino acids of any of the amino acid sequences of (a) to (b);    (2) new isolated polynucleotide (P2) comprising a nucleic acid or its complementary sequence selected from: a) a polynucleotide sequence encoding a polypeptide consisting of amino acid sequences of SEQ ID NO: 3, 4, 7, 10, or 13, b) a polynucleotide sequence encoding a biologically active sequence variant of the amino acid sequence, where the variant has at least 92% sequence identity to the SEQ ID NO: 3, 4, 7, 10, or 13, and c) a polynucleotide sequence encoding a biologically active fragment of at least 30 consecutive amino acids of any of the amino acid sequences of (a) to (b), or d) SEQ ID NO: 1, 2, 6, 14, 15, 16 or 17, all as available on WIPO website, and nucleotide sequence of 2992 base pairs (SEQ ID NO: 5), 3589 base pairs (SEQ ID NO: 8), 2169 base pairs (SEQ ID NO: 9), 3230 base pairs (SEQ ID NO: 11), 2301 base pairs (SEQ ID NO: 12) or 4698 base pairs (SEQ ID NO: 29) as given in the specification, or e) a polynucleotide comprising a nucleic acid sequence having at least 85% identity to SEQ ID NO: 1, 2, 5, 6, 8, 9, 11, 12, 14, 15, 16, 17 or 29, or f) a polynucleotide hybridizing to SEQ ID NO: 1, 2, 5, 6, 8, 9, 11, 12, 14, 15, 16, 17 or 29, and g) a polynucleotide complementary to any of (a) to (f);    (3) new recombinant nucleic acid vector (V1) comprising the polynucleotide (P2);    (4) new host cell (C1) comprising the polypeptide (P1), polynucleotide (P2) and/or recombinant nucleic acid vector (V1);    (5) producing the polypeptide (P1);    (6) a composition (C2) comprising the polypeptide (P1), the host cell (C1) and/or the microorganism (M1);    (7) a kit-of parts comprising the composition (C2) and at least one additional component; and    (8) method (M3) of degrading or converting a lignocellulosic material, involving incubating the lignocellulosic material with the composition (C2) or the kit-of parts.