ISSN:
1436-2236
Keywords:
Key words:Roseobacter species, scallop larvae, antibacterial activity, probiotic
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract A marine strain (BS107), identified as a Roseobacter species, was antagonistic to Vibrio species on agar plates. Results suggested that the inhibitory effect was displayed only in the presence of another bacterium. Quantification of the antibacterial activity showed that 48-hour-coculture supernatants from BS107 and another bacterial strain (V. anguillarum 408) reached the highest titers of bacterial inhibition. The antibacterial substance was also liberated when supernatants from V. anguillarum 408 were added to pure cultures of the inhibition-productive bacterium. The presence of a proteinaceous molecule may induce BS107 to display the inhibitory effect. The antibacterial substance was sensitive to trypsin (8000 U/ml) and stable at 100°C. Cell extracts of the isolate BS107 (106 cells/ml) significantly enhanced scallop larval survival, thus being beneficial to the rearing process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/PL00011751
