Opportunities for Environmental Applications of Marine Biotechnology Proceedings of the October 5-6, 1999, Workshop (2000) / Chapter Skim
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Antifouling
Antifouling
Pages 8-13
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From page 8... ...
I first studied the alpine environment, which probably has the cleanest water in any ecosystem, with sparse Pseudomonas aeruginosa growth of perhaps 8 bacteria/mL in the flowing water and abundant growth of at least 108 bacteria/cm2 on the rocks. So it is in biofilms in any ecosystem that bacteria grow preferentially on surfaces.
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From page 9... ...
Acute bacterial infections caused by planktonic bacteria have been largely controlled, primarily with antibiotics and vaccines; however, conditions such as children's middle ear infections persist until they are eventually outgrown. The persistent condition emerges as a very large concern.
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From page 10... ...
For example, in the case of Pseudomonas aeruginosa, two different signals are produced, and these simply diffuse through the cell envelope out into the surrounding milieu, and nothing happens. However, when planktonic cultures of bacteria reach a certain cell density (which Peter Greenberg calls a quorum)
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From page 11... ...
that occasionally fouls with macrophytes but virtually never with bacteria. In the late 1980s, Staffan Kjelleberg and Pete Steinberg ground up some of these red algal fronds and found the active principle, a series of molecules called furanones.
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From page 12... ...
Note the failure of marine biota in colonizing this material containing the natural blocking analog of the homoserine lactone signal that controls biofilm formation in many Gram-negative organisms. Reproduced with permission from Staffan Kjelleberg.
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From page 13... ...
REFERENCES Costerton JW, Stewart PS, Greenberg EP. 1999 Bacterial biofilms: A common cause of persistent infections.
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