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 Previous Article

Applied and Environmental Microbiology, October 2009, p. 6630-6633, Vol. 75, No. 20
0099-2240/09/$08.00+0     doi:10.1128/AEM.01415-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Identification of Flagellar Motility Genes in Yersinia ruckeri by Transposon Mutagenesis{triangledown}

Jason P. Evenhuis,1 Scott E. LaPatra,2 David W. Verner-Jeffreys,3 Inger Dalsgaard,4 and Timothy J. Welch1*

National Center for Cool and Cold Water Aquaculture, Agricultural Research Service, U.S. Department of Agriculture, Kearneysville, West Virginia 25430,1 Clear Springs Foods, Inc., Research Division, Buhl, Idaho,2 Cefas Weymouth Laboratory, Weymouth, Dorset, United Kingdom DT4 8UB,3 National Institute of Aquatic Resources, Section for Fish Diseases Laboratory, Technical University of Denmark, Stigbøjlen 4, 1870 Frederiksberg C, Denmark4

Received 17 June 2009/ Accepted 13 August 2009

Here we demonstrate that flagellar secretion is required for production of secreted lipase activity in the fish pathogen Yersinia ruckeri and that neither of these activities is necessary for virulence in rainbow trout. Our results suggest a possible mechanism for the emergence of nonmotile biotype 2 Y. ruckeri through the mutational loss of flagellar secretion.

* Corresponding author. Mailing address: National Center for Cool and Cold Water Aquaculture, 11861 Leetown Road, Kearneysville, WV 25430. Phone: (304) 724-8340. Fax: (304) 725-0351. E-mail: tim.welch{at}ars.usda.gov

{triangledown} Published ahead of print on 21 August 2009.

Applied and Environmental Microbiology, October 2009, p. 6630-6633, Vol. 75, No. 20
0099-2240/09/$08.00+0     doi:10.1128/AEM.01415-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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