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Applied and Environmental Microbiology, June 2007, p. 3742-3746, Vol. 73, No. 11
0099-2240/07/$08.00+0     doi:10.1128/AEM.02804-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Quorum Sensing Enhances the Stress Response in Vibrio cholerae{triangledown}

Adam Joelsson,1 Biao Kan,2 and Jun Zhu1*

Department of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104,1 State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Beijing, China2

Received 1 December 2006/ Accepted 6 April 2007

Vibrio cholerae lives in aquatic environments and causes cholera. Here, we show that quorum sensing enhances V. cholerae viability under certain stress conditions by upregulating the expression of RpoS, and this regulation acts through HapR, suggesting that a quorum-sensing-enhanced stress response plays a role in V. cholerae environmental survival.

* Corresponding author. Mailing address: Department of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104. Phone: (215) 573-4104. Fax: (215) 898-9557. E-mail: junzhu{at}mail.med.upenn.edu

{triangledown} Published ahead of print on 13 April 2007.

Applied and Environmental Microbiology, June 2007, p. 3742-3746, Vol. 73, No. 11
0099-2240/07/$08.00+0     doi:10.1128/AEM.02804-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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