Antimicrobial Activities of Bacteria Associated with the Brown Alga Padina pavonica
| Autor: | Mariana Silvia Cretoiu, Henk Bolhuis, Monia El Bour, Mehboob Ahmed, Lucas J. Stal, Leila Ktari, Amel Ismail, Abdellatif Boudabbous |
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| Přispěvatelé: | Faculty of Science, IBED Other Research (FNWI), Systems Biology, Aquatic Microbiology (IBED, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Microbiology (medical) epibionts Firmicutes 030106 microbiology Padina pavonica medicine.disease_cause Microbiology antibiotics 03 medical and health sciences medicine Original Research Bacillus pumilus biology Pathogenic bacteria Antimicrobial biology.organism_classification Vibrio 030104 developmental biology seaweed Epiphytic bacteria bacteria Proteobacteria Bacteria |
| Zdroj: | Frontiers in Microbiology, 7:1072. Frontiers Media S.A. Frontiers in Microbiology |
| ISSN: | 1664-302X |
| Popis: | Macroalgae belonging to the genus Padina are known to produce antibacterial compounds that may inhibit growth of human- and animal pathogens. Hitherto, it was unclear whether this antibacterial activity is produced by the macroalga itself or by secondary metabolite producing epiphytic bacteria. Here we report antibacterial activities of epiphytic bacteria isolated from Padina pavonica (Peacocks tail) located on northern coast of Tunisia. Eighteen isolates were obtained in pure culture and tested for antimicrobial activities. Based on the 16S rRNA gene sequences the isolates were closely related to Proteobacteria (12 isolates; 2 Alpha- and 10 Gammaproteobacteria), Firmicutes (4 isolates) and Actinobacteria (2 isolates). The antimicrobial activity was assessed as inhibition of growth of 12 species of pathogenic bacteria (Aeromonas salmonicida, A. hydrophila, Enterobacter xiangfangensis, Enterococcus faecium, Escherichia coli, Micrococcus sp., Salmonella typhimurium, Staphylococcus aureus, Streptococcus sp., Vibrio alginoliticus, V. proteolyticus, V. vulnificus) and one pathogenic yeast (Candida albicans). Among the Firmicutes, isolate P8, which is closely related to Bacillus pumilus, displayed the largest spectrum of growth inhibition of the pathogenic bacteria tested. The results emphasize the potential use of P. pavonica associated antagonistic bacteria as producers of novel antibacterial compounds. |
| Databáze: | OpenAIRE |
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