Superoxide dismutase and catalase activities in Photobacterium damselae ssp. piscicida
The ability of a set of Photobacterium damselae ssp. piscicida strains isolated from different fish species to produce different superoxide dismutase (SOD) and catalase enzymes was determined. Unlike other bacterial pathogens, P. damselae ssp. piscicida is not able to produce different isoforms of S...
| Veröffentlicht in: | Journal of fish diseases. - 1998. - 29(2006), 6 vom: 05. Juni, Seite 355-64 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2006
|
| Zugriff auf das übergeordnete Werk: | Journal of fish diseases |
| Schlagworte: | Comparative Study Journal Article Research Support, Non-U.S. Gov't Chlorides Ferric Compounds 2,2'-Dipyridyl 551W113ZEP Catalase EC 1.11.1.6 Superoxide Dismutase mehr... |
| Zusammenfassung: | The ability of a set of Photobacterium damselae ssp. piscicida strains isolated from different fish species to produce different superoxide dismutase (SOD) and catalase enzymes was determined. Unlike other bacterial pathogens, P. damselae ssp. piscicida is not able to produce different isoforms of SOD or catalase containing different metal cofactors when cultured under oxidative stress induced by hydrogen peroxide or methyl viologen, or under iron depleted conditions. However, iron content of the growth medium influenced the levels of SOD and catalase activity in cells, these levels decreasing with iron availability of the medium. Comparison of virulent and non-virulent strains of P. damselae ssp. piscicida showed similar contents of SOD, but higher levels of catalase were detected in cells of the virulent strain. Incubation of bacteria with sole, Solea senegalensis (Kaup), phagocytes has shown that survival rates range from 19% to 62%, these rates being higher for the virulent strain. The increased levels of catalase activity detected in the virulent strain indicates a possible role for this enzyme in bacterial survival |
|---|---|
| Beschreibung: | Date Completed 08.08.2006 Date Revised 30.09.2020 published: Print Citation Status MEDLINE |
| ISSN: | 0140-7775 |