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Appl Environ Microbiol. 1979 January; 37(1): 67-72

Influence of Substratum Characteristics on the Attachment of a Marine Pseudomonad to Solid Surfaces

Madilyn Fletcher^,a and G. I. Loeb¹

^a Marine Science Laboratories, University College of North Wales, Gwynedd LL59 5EH, Wales
¹ Naval Research Laboratory, Washington, D.C. 20375

ABSTRACT

The attachment of a marine Pseudomonas sp. to a variety of surfaces was investigated, and the number of bacteria which became attached was related to the surface charge and degree of hydrophobicity of the substratum. Large numbers of bacteria attached to hydrophobic plastics with little or no surface charge [Teflon, polyethylene, polystyrene, poly(ethylene terephthalate)]; moderate numbers attached to hydrophilic metals with a positive (platinum) or neutral (germanium) surface charge; and very few attached to hydrophilic, negatively charged substrata (glass, mica, oxidized plastics). The results suggest that both electrostatic and hydrophobic interactions are involved in bacterial attachment.

Present address: Department of Environmental Sciences, University of Warwick, Coventry CV4 7AL, England.

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