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Journal of Bacteriology, November 2007, p. 8357-8360, Vol. 189, No. 22
0021-9193/07/$08.00+0     doi:10.1128/JB.01040-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Influence of the Hydrodynamic Environment on Quorum Sensing in Pseudomonas aeruginosa Biofilms{triangledown} ,{dagger}

Mary Jo Kirisits,1* Jeffrey J. Margolis,2 Boloroo L. Purevdorj-Gage,3 Benjamin Vaughan,4 David L. Chopp,4 Paul Stoodley,5 and Matthew R. Parsek6*

Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, Austin, Texas 78712,1 Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California 94305,2 Center for Biofilm Engineering, Montana State University, Bozeman, Montana 59717,3 Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois 60208,4 Center for Genomic Sciences, Pittsburgh, Pennsylvania 15212,5 Department of Microbiology, University of Washington, Seattle, Washington 981956

Received 1 July 2007/ Accepted 2 August 2007

We provide experimental and modeling evidence that the hydrodynamic environment can impact quorum sensing (QS) in a Pseudomonas aeruginosa biofilm. The amount of biofilm biomass required for full QS induction of the population increased as the flow rate increased.

* Corresponding author. Mailing address for Mary Jo Kirisits: Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, 1 University Station C1786, Austin, TX 78712. Phone: (512) 232-7120. Fax: (512) 471-5870. E-mail: kirisits{at}mail.utexas.edu. Mailing address for Matthew R. Parsek: Department of Microbiology, School of Medicine, University of Washington, Box 357242, 1959 NE Pacific Street, Seattle, WA 98195. Phone: (206) 221-7871. Fax: (206) 543-8297. E-mail: parsem{at}u.washington.edu

{triangledown} Published ahead of print on 17 August 2007.

{dagger} Supplemental material for this article may be found at http://jb.asm.org/.

Journal of Bacteriology, November 2007, p. 8357-8360, Vol. 189, No. 22
0021-9193/07/$08.00+0     doi:10.1128/JB.01040-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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