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Applied and Environmental Microbiology, October 1998, p. 4079-4083, Vol. 64, No. 10
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

A Gliding Bacterium Strain Inhibits Adhesion and Motility of Another Gliding Bacterium Strain in a Marine Biofilm

Robert P. Burchard* and Maria L. Sorongondagger

Department of Biological Sciences, University of Maryland, Baltimore County, Baltimore, Maryland 21250

Received 10 April 1998/Accepted 31 July 1998

Two species of gliding bacteria were isolated from a marine biofilm. They were described and identified as members of the genus Cytophaga. One of them (RB1057) produced an extracellular inhibitor of colony expansion of the other (RB1058). The inhibitor was characterized as a glycoprotein with an apparent molecular mass of 60 kDa. It inhibited RB1058 adhesion to and gliding on substrata. Motility and adhesion of several other aquatic gliding bacteria were not measurably affected by this agent.

* Corresponding author. Mailing address: Department of Biological Sciences, UMBC, Baltimore, MD 21250. Phone: (410) 455-2555. Fax: (410) 455-3875. E-mail: burchard{at}umbc.edu.

dagger Present address: Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD 21201.

Applied and Environmental Microbiology, October 1998, p. 4079-4083, Vol. 64, No. 10
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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