| Title: | "[Kinetics of xylanase and cellulase production by Ascobolus gamundii (Fungi, Ascomycotina)]" |
| Author(s): | Sivori AS; Mercuri OA; Forchiassin F; |
| Address: | "Departamento de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina" |
| ISSN/ISBN: | 0325-7541 (Print) 0325-7541 (Linking) |
| Abstract: | "Growth and cellulase-xylanase enzyme systems production by Ascobolus gamundii were evaluated in synthetic media with or without natural inducers. The basal level of enzyme complexes was determined using glucose as carbon source. With crystalline cellulose, the amount of endoglucanase and beta-glucosidase was 2-4 times the basal, and the level of endoxylanase and beta-xylosidase was 3 times higher than that observed with glucose. When using xylan as carbon source, endoxylanase and endoglucanase were induced. The higher production of the enzyme systems was observed during the log-phase growth of A. gamundii with a mixture of cellulose and xylan as carbon source. The generalized induction of both enzyme complexes could be due to evolutive adaptation to the substrate (herbivore dung) in which cellulose and hemicellulose are associated to conform the plants cell-walls" |
| Keywords: | "Ascomycota/*enzymology/genetics Cellulase/*biosynthesis/genetics Cellulose/metabolism Endo-1, 4-beta Xylanases Enzyme Induction Feces/microbiology Fungal Proteins/*biosynthesis/genetics *Gene Expression Regulation, Bacterial Glucose/metabolism Kinetics Xyl;" |
| Notes: | "MedlineSivori, A S Mercuri, O A Forchiassin, F spa English Abstract Argentina 1996/01/01 Rev Argent Microbiol. 1996 Jan-Mar; 28(1):9-15" |
