Allelopathy of marine macroalgae against microbial epibiosis

Marine macroalgae are often devoid of micro- and macro-colonizers, suggesting some sort of host-derived antifouling defense. Previous studies mainly focused on tissue extracts of entire algae against few bacterial isolates, thereby not only neglecting ecologically relevant bacteria but also natural delivery mechanisms of algal antimicrobial agents. In my study, I investigated antimicrobial effects of waterborne algal metabolites utilizing culture-independent techniques against planktonic bacteria and fungi in presence and absence of macroalgae. I also studied the inhibitory effects of macroalgae against diatoms. Results revealed that macroalgae affected planktonic bacteria qualitatively and quantitatively by waterborne algal metabolites. Fungal community pattern was also affected in the presence of algae, but with a different specificity of algae. Furthermore, algal extracts exhibited a distinct pattern of activities against epiphytic diatoms.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Universität Oldenburg

Year

2007

Author dc:creator

• Lam, Cindy

• [Keine Schlagwörter von Autor/in vergeben.]

Repository record source_url

http://oops.uni-oldenburg.de/30

OAI identifier oai:identifier

oai:oops.uni-oldenburg.de:30