| Journal: | Brazilian archives of biology and technology |
| Database: | PERIÓDICA |
| System number: | 000337684 |
| ISSN: | 1516-8913 |
| Authors: | Colombo-Corbi, Vanessa1 Dellamano-Oliveira, Maria Jose1 Vieira, Armando Augusto Henriques1 |
| Institutions: | 1Universidade Federal de Sao Carlos, Departamento de Botanica, Sao Paulo. Brasil |
| Year: | 2011 |
| Season: | May-Jun |
| Volumen: | 54 |
| Number: | 3 |
| Pages: | 523-526 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Glycolytic activities of eight enzymes in size-fractionated water samples from a eutrophic tropical reservoir are presented in this study, including enzymes assayed for the first time in a freshwater environment. Among these enzymes, rhamnosidase, arabinosidase and fucosidase presented high activity in the free-living fraction, while glucosidase, mannosidase and galactosidase exhibited high activity in the attached fraction. The low activity registered for rhamnosidase, arabinosidase and fucosidase in the attached fraction seemed contribute to the integrity of the aggregate and based on this fact, a protective role for these structures was proposed. The presented enzyme profiles and the differences in the relative activities probably reflected the organic matter composition as well as the metabolic requirements of the bacterial community, suggesting that bacteria attached to particulate matter had phenotypic traits distinct from those of free-living bacteria |
| Disciplines: | Biología |
| Keyword: | Bacterias, Biología acuática, Ecología, Microbiología, Represas eutróficas, Polisacáridos extracelulares, Fitoplancton, Enzimas |
| Keyword: | Biology, Aquatic biology, Bacteria, Ecology, Microbiology, Eutrophic reservoirs, Extracellular polysaccharides, Phytoplankton, Enzymes |
| Full text: | Texto completo (Ver HTML) |
